state.c

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/*
 * Direct3D state management
 *
 * Copyright 2002 Lionel Ulmer
 * Copyright 2002-2005 Jason Edmeades
 * Copyright 2003-2004 Raphael Junqueira
 * Copyright 2004 Christian Costa
 * Copyright 2005 Oliver Stieber
 * Copyright 2006 Henri Verbeet
 * Copyright 2006-2008 Stefan Dösinger for CodeWeavers
 * Copyright 2009-2011 Henri Verbeet for CodeWeavers
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#include "config.h"
#include "wine/port.h"
 
#include <stdio.h>
#ifdef HAVE_FLOAT_H
# include <float.h>
#endif
 
#include "wined3d_private.h"
 
WINE_DEFAULT_DEBUG_CHANNEL(d3d);
WINE_DECLARE_DEBUG_CHANNEL(d3d_shader);
 
void (WINE_GLAPI *glDisableWINE)(GLenum cap);
void (WINE_GLAPI *glEnableWINE)(GLenum cap);
 
ULONG CDECL wined3d_blend_state_incref(struct wined3d_blend_state *state)
{
    ULONG refcount = InterlockedIncrement(&state->refcount);
 
    TRACE("%p increasing refcount to %u.\n", state, refcount);
 
    return refcount;
}
 
static void wined3d_blend_state_destroy_object(void *object)
{
    heap_free(object);
}
 
ULONG CDECL wined3d_blend_state_decref(struct wined3d_blend_state *state)
{
    ULONG refcount = InterlockedDecrement(&state->refcount);
    struct wined3d_device *device = state->device;
 
    TRACE("%p decreasing refcount to %u.\n", state, refcount);
 
    if (!refcount)
    {
        state->parent_ops->wined3d_object_destroyed(state->parent);
        wined3d_cs_destroy_object(device->cs, wined3d_blend_state_destroy_object, state);
    }
 
    return refcount;
}
 
void * CDECL wined3d_blend_state_get_parent(const struct wined3d_blend_state *state)
{
    TRACE("state %p.\n", state);
 
    return state->parent;
}
 
HRESULT CDECL wined3d_blend_state_create(struct wined3d_device *device,
        const struct wined3d_blend_state_desc *desc, void *parent,
        const struct wined3d_parent_ops *parent_ops, struct wined3d_blend_state **state)
{
    struct wined3d_blend_state *object;
 
    TRACE("device %p, desc %p, parent %p, parent_ops %p, state %p.\n",
            device, desc, parent, parent_ops, state);
 
    if (!(object = heap_alloc_zero(sizeof(*object))))
        return E_OUTOFMEMORY;
 
    object->refcount = 1;
    object->desc = *desc;
    object->parent = parent;
    object->parent_ops = parent_ops;
    object->device = device;
 
    TRACE("Created blend state %p.\n", object);
    *state = object;
 
    return WINED3D_OK;
}
 
ULONG CDECL wined3d_rasterizer_state_incref(struct wined3d_rasterizer_state *state)
{
    ULONG refcount = InterlockedIncrement(&state->refcount);
 
    TRACE("%p increasing refcount to %u.\n", state, refcount);
 
    return refcount;
}
 
static void wined3d_rasterizer_state_destroy_object(void *object)
{
    heap_free(object);
}
 
ULONG CDECL wined3d_rasterizer_state_decref(struct wined3d_rasterizer_state *state)
{
    ULONG refcount = InterlockedDecrement(&state->refcount);
    struct wined3d_device *device = state->device;
 
    TRACE("%p decreasing refcount to %u.\n", state, refcount);
 
    if (!refcount)
    {
        state->parent_ops->wined3d_object_destroyed(state->parent);
        wined3d_cs_destroy_object(device->cs, wined3d_rasterizer_state_destroy_object, state);
    }
 
    return refcount;
}
 
void * CDECL wined3d_rasterizer_state_get_parent(const struct wined3d_rasterizer_state *state)
{
    TRACE("rasterizer_state %p.\n", state);
 
    return state->parent;
}
 
HRESULT CDECL wined3d_rasterizer_state_create(struct wined3d_device *device,
        const struct wined3d_rasterizer_state_desc *desc, void *parent,
        const struct wined3d_parent_ops *parent_ops, struct wined3d_rasterizer_state **state)
{
    struct wined3d_rasterizer_state *object;
 
    TRACE("device %p, desc %p, parent %p, parent_ops %p, state %p.\n",
            device, desc, parent, parent_ops, state);
 
    if (!(object = heap_alloc_zero(sizeof(*object))))
        return E_OUTOFMEMORY;
 
    object->refcount = 1;
    object->desc = *desc;
    object->parent = parent;
    object->parent_ops = parent_ops;
    object->device = device;
 
    TRACE("Created rasterizer state %p.\n", object);
    *state = object;
 
    return WINED3D_OK;
}
 
/* Context activation for state handler is done by the caller. */
 
static void state_undefined(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    ERR("Undefined state %s (%#x).\n", debug_d3dstate(state_id), state_id);
}
 
void state_nop(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    TRACE("%s: nop in current pipe config.\n", debug_d3dstate(state_id));
}
 
static void state_fillmode(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    enum wined3d_fill_mode mode = state->render_states[WINED3D_RS_FILLMODE];
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    switch (mode)
    {
        case WINED3D_FILL_POINT:
            gl_info->gl_ops.gl.p_glPolygonMode(GL_FRONT_AND_BACK, GL_POINT);
            checkGLcall("glPolygonMode(GL_FRONT_AND_BACK, GL_POINT)");
            break;
        case WINED3D_FILL_WIREFRAME:
            gl_info->gl_ops.gl.p_glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
            checkGLcall("glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)");
            break;
        case WINED3D_FILL_SOLID:
            gl_info->gl_ops.gl.p_glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
            checkGLcall("glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)");
            break;
        default:
            FIXME("Unrecognized fill mode %#x.\n", mode);
    }
}
 
static void state_lighting(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    /* Lighting is not enabled if transformed vertices are drawn, but lighting
     * does not affect the stream sources, so it is not grouped for
     * performance reasons. This state reads the decoded vertex declaration,
     * so if it is dirty don't do anything. The vertex declaration applying
     * function calls this function for updating. */
    if (isStateDirty(context, STATE_VDECL))
        return;
 
    if (state->render_states[WINED3D_RS_LIGHTING]
            && !context->stream_info.position_transformed)
    {
        gl_info->gl_ops.gl.p_glEnable(GL_LIGHTING);
        checkGLcall("glEnable GL_LIGHTING");
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_LIGHTING);
        checkGLcall("glDisable GL_LIGHTING");
    }
}
 
static void state_zenable(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    enum wined3d_depth_buffer_type zenable = state->render_states[WINED3D_RS_ZENABLE];
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    /* No z test without depth stencil buffers */
    if (!state->fb->depth_stencil)
    {
        TRACE("No Z buffer - disabling depth test\n");
        zenable = WINED3D_ZB_FALSE;
    }
 
    switch (zenable)
    {
        case WINED3D_ZB_FALSE:
            gl_info->gl_ops.gl.p_glDisable(GL_DEPTH_TEST);
            checkGLcall("glDisable GL_DEPTH_TEST");
            break;
        case WINED3D_ZB_TRUE:
            gl_info->gl_ops.gl.p_glEnable(GL_DEPTH_TEST);
            checkGLcall("glEnable GL_DEPTH_TEST");
            break;
        case WINED3D_ZB_USEW:
            gl_info->gl_ops.gl.p_glEnable(GL_DEPTH_TEST);
            checkGLcall("glEnable GL_DEPTH_TEST");
            FIXME("W buffer is not well handled\n");
            break;
        default:
            FIXME("Unrecognized depth buffer type %#x.\n", zenable);
            break;
    }
 
    if (context->last_was_rhw && !isStateDirty(context, STATE_TRANSFORM(WINED3D_TS_PROJECTION)))
        context_apply_state(context, state, STATE_TRANSFORM(WINED3D_TS_PROJECTION));
}
 
static void state_cullmode(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    /* glFrontFace() is set in context.c at context init and on an
     * offscreen / onscreen rendering switch. */
    switch (state->render_states[WINED3D_RS_CULLMODE])
    {
        case WINED3D_CULL_NONE:
            gl_info->gl_ops.gl.p_glDisable(GL_CULL_FACE);
            checkGLcall("glDisable GL_CULL_FACE");
            break;
        case WINED3D_CULL_FRONT:
            gl_info->gl_ops.gl.p_glEnable(GL_CULL_FACE);
            checkGLcall("glEnable GL_CULL_FACE");
            gl_info->gl_ops.gl.p_glCullFace(GL_FRONT);
            checkGLcall("glCullFace(GL_FRONT)");
            break;
        case WINED3D_CULL_BACK:
            gl_info->gl_ops.gl.p_glEnable(GL_CULL_FACE);
            checkGLcall("glEnable GL_CULL_FACE");
            gl_info->gl_ops.gl.p_glCullFace(GL_BACK);
            checkGLcall("glCullFace(GL_BACK)");
            break;
        default:
            FIXME("Unrecognized cull mode %#x.\n",
                    state->render_states[WINED3D_RS_CULLMODE]);
    }
}
 
void state_shademode(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    switch (state->render_states[WINED3D_RS_SHADEMODE])
    {
        case WINED3D_SHADE_FLAT:
            gl_info->gl_ops.gl.p_glShadeModel(GL_FLAT);
            checkGLcall("glShadeModel(GL_FLAT)");
            break;
        case WINED3D_SHADE_GOURAUD:
        /* WINED3D_SHADE_PHONG in practice is the same as WINED3D_SHADE_GOURAUD
         * in D3D. */
        case WINED3D_SHADE_PHONG:
            gl_info->gl_ops.gl.p_glShadeModel(GL_SMOOTH);
            checkGLcall("glShadeModel(GL_SMOOTH)");
            break;
        default:
            FIXME("Unrecognized shade mode %#x.\n",
                    state->render_states[WINED3D_RS_SHADEMODE]);
    }
}
 
static void state_ditherenable(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (state->render_states[WINED3D_RS_DITHERENABLE])
    {
        gl_info->gl_ops.gl.p_glEnable(GL_DITHER);
        checkGLcall("glEnable GL_DITHER");
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_DITHER);
        checkGLcall("glDisable GL_DITHER");
    }
}
 
static void state_zwriteenable(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (state->render_states[WINED3D_RS_ZWRITEENABLE])
    {
        gl_info->gl_ops.gl.p_glDepthMask(1);
        checkGLcall("glDepthMask(1)");
    }
    else
    {
        gl_info->gl_ops.gl.p_glDepthMask(0);
        checkGLcall("glDepthMask(0)");
    }
}
 
GLenum wined3d_gl_compare_func(enum wined3d_cmp_func f)
{
    switch (f)
    {
        case WINED3D_CMP_NEVER:
            return GL_NEVER;
        case WINED3D_CMP_LESS:
            return GL_LESS;
        case WINED3D_CMP_EQUAL:
            return GL_EQUAL;
        case WINED3D_CMP_LESSEQUAL:
            return GL_LEQUAL;
        case WINED3D_CMP_GREATER:
            return GL_GREATER;
        case WINED3D_CMP_NOTEQUAL:
            return GL_NOTEQUAL;
        case WINED3D_CMP_GREATEREQUAL:
            return GL_GEQUAL;
        case WINED3D_CMP_ALWAYS:
            return GL_ALWAYS;
        default:
            if (!f)
                WARN("Unrecognized compare function %#x.\n", f);
            else
                FIXME("Unrecognized compare function %#x.\n", f);
            return GL_NONE;
    }
}
 
static void state_zfunc(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    GLenum depth_func = wined3d_gl_compare_func(state->render_states[WINED3D_RS_ZFUNC]);
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (!depth_func) return;
 
    gl_info->gl_ops.gl.p_glDepthFunc(depth_func);
    checkGLcall("glDepthFunc");
}
 
static void state_ambient(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    struct wined3d_color color;
 
    wined3d_color_from_d3dcolor(&color, state->render_states[WINED3D_RS_AMBIENT]);
    TRACE("Setting ambient to %s.\n", debug_color(&color));
    gl_info->gl_ops.gl.p_glLightModelfv(GL_LIGHT_MODEL_AMBIENT, &color.r);
    checkGLcall("glLightModel for MODEL_AMBIENT");
}
 
static void state_blendop_w(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    WARN("Unsupported in local OpenGL implementation: glBlendEquation\n");
}
 
static GLenum gl_blend_op(const struct wined3d_gl_info *gl_info, enum wined3d_blend_op op)
{
    switch (op)
    {
        case WINED3D_BLEND_OP_ADD:
            return GL_FUNC_ADD;
        case WINED3D_BLEND_OP_SUBTRACT:
            return gl_info->supported[EXT_BLEND_SUBTRACT] ? GL_FUNC_SUBTRACT : GL_FUNC_ADD;
        case WINED3D_BLEND_OP_REVSUBTRACT:
            return gl_info->supported[EXT_BLEND_SUBTRACT] ? GL_FUNC_REVERSE_SUBTRACT : GL_FUNC_ADD;
        case WINED3D_BLEND_OP_MIN:
            return gl_info->supported[EXT_BLEND_MINMAX] ? GL_MIN : GL_FUNC_ADD;
        case WINED3D_BLEND_OP_MAX:
            return gl_info->supported[EXT_BLEND_MINMAX] ? GL_MAX : GL_FUNC_ADD;
        default:
            if (!op)
                WARN("Unhandled blend op %#x.\n", op);
            else
                FIXME("Unhandled blend op %#x.\n", op);
            return GL_FUNC_ADD;
    }
}
 
static void state_blendop(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    GLenum blend_equation_alpha = GL_FUNC_ADD_EXT;
    GLenum blend_equation = GL_FUNC_ADD_EXT;
 
    /* BLENDOPALPHA requires GL_EXT_blend_equation_separate, so make sure it is around */
    if (state->render_states[WINED3D_RS_BLENDOPALPHA]
            && !gl_info->supported[EXT_BLEND_EQUATION_SEPARATE])
    {
        WARN("Unsupported in local OpenGL implementation: glBlendEquationSeparate.\n");
        return;
    }
 
    blend_equation = gl_blend_op(gl_info, state->render_states[WINED3D_RS_BLENDOP]);
    blend_equation_alpha = gl_blend_op(gl_info, state->render_states[WINED3D_RS_BLENDOPALPHA]);
    TRACE("blend_equation %#x, blend_equation_alpha %#x.\n", blend_equation, blend_equation_alpha);
 
    if (state->render_states[WINED3D_RS_SEPARATEALPHABLENDENABLE])
    {
        GL_EXTCALL(glBlendEquationSeparate(blend_equation, blend_equation_alpha));
        checkGLcall("glBlendEquationSeparate");
    }
    else
    {
        GL_EXTCALL(glBlendEquation(blend_equation));
        checkGLcall("glBlendEquation");
    }
}
 
static GLenum gl_blend_factor(enum wined3d_blend factor, const struct wined3d_format *dst_format)
{
    switch (factor)
    {
        case WINED3D_BLEND_ZERO:
            return GL_ZERO;
        case WINED3D_BLEND_ONE:
            return GL_ONE;
        case WINED3D_BLEND_SRCCOLOR:
            return GL_SRC_COLOR;
        case WINED3D_BLEND_INVSRCCOLOR:
            return GL_ONE_MINUS_SRC_COLOR;
        case WINED3D_BLEND_SRCALPHA:
            return GL_SRC_ALPHA;
        case WINED3D_BLEND_INVSRCALPHA:
            return GL_ONE_MINUS_SRC_ALPHA;
        case WINED3D_BLEND_DESTCOLOR:
            return GL_DST_COLOR;
        case WINED3D_BLEND_INVDESTCOLOR:
            return GL_ONE_MINUS_DST_COLOR;
        /* To compensate for the lack of format switching with backbuffer
         * offscreen rendering, and with onscreen rendering, we modify the
         * alpha test parameters for (INV)DESTALPHA if the render target
         * doesn't support alpha blending. A nonexistent alpha channel
         * returns 1.0, so WINED3D_BLEND_DESTALPHA becomes GL_ONE, and
         * WINED3D_BLEND_INVDESTALPHA becomes GL_ZERO. */
        case WINED3D_BLEND_DESTALPHA:
            return dst_format->alpha_size ? GL_DST_ALPHA : GL_ONE;
        case WINED3D_BLEND_INVDESTALPHA:
            return dst_format->alpha_size ? GL_ONE_MINUS_DST_ALPHA : GL_ZERO;
        case WINED3D_BLEND_SRCALPHASAT:
            return GL_SRC_ALPHA_SATURATE;
        case WINED3D_BLEND_BLENDFACTOR:
            return GL_CONSTANT_COLOR_EXT;
        case WINED3D_BLEND_INVBLENDFACTOR:
            return GL_ONE_MINUS_CONSTANT_COLOR_EXT;
        case WINED3D_BLEND_SRC1COLOR:
            return GL_SRC1_COLOR;
        case WINED3D_BLEND_INVSRC1COLOR:
            return GL_ONE_MINUS_SRC1_COLOR;
        case WINED3D_BLEND_SRC1ALPHA:
            return GL_SRC1_ALPHA;
        case WINED3D_BLEND_INVSRC1ALPHA:
            return GL_ONE_MINUS_SRC1_ALPHA;
        default:
            if (!factor)
                WARN("Unhandled blend factor %#x.\n", factor);
            else
                FIXME("Unhandled blend factor %#x.\n", factor);
            return GL_NONE;
    }
}
 
static void gl_blend_from_d3d(GLenum *src_blend, GLenum *dst_blend,
        enum wined3d_blend d3d_src_blend, enum wined3d_blend d3d_dst_blend,
        const struct wined3d_format *rt_format)
{
    /* WINED3D_BLEND_BOTHSRCALPHA and WINED3D_BLEND_BOTHINVSRCALPHA are legacy
     * source blending values which are still valid up to d3d9. They should
     * not occur as dest blend values. */
    if (d3d_src_blend == WINED3D_BLEND_BOTHSRCALPHA)
    {
        *src_blend = GL_SRC_ALPHA;
        *dst_blend = GL_ONE_MINUS_SRC_ALPHA;
    }
    else if (d3d_src_blend == WINED3D_BLEND_BOTHINVSRCALPHA)
    {
        *src_blend = GL_ONE_MINUS_SRC_ALPHA;
        *dst_blend = GL_SRC_ALPHA;
    }
    else
    {
        *src_blend = gl_blend_factor(d3d_src_blend, rt_format);
        *dst_blend = gl_blend_factor(d3d_dst_blend, rt_format);
    }
}
 
static void state_blend(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    const struct wined3d_format *rt_format;
    GLenum src_blend, dst_blend;
    unsigned int rt_fmt_flags;
    BOOL enable_dual_blend;
    BOOL enable_blend;
 
    enable_blend = state->fb->render_targets[0] && state->render_states[WINED3D_RS_ALPHABLENDENABLE];
    enable_dual_blend = wined3d_dualblend_enabled(state, context->gl_info);
 
    if (enable_blend && !enable_dual_blend)
    {
        rt_fmt_flags = state->fb->render_targets[0]->format_flags;
 
        /* Disable blending in all cases even without pixelshaders.
         * With blending on we could face a big performance penalty.
         * The d3d9 visual test confirms the behavior. */
        if (context->render_offscreen && !(rt_fmt_flags & WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING))
            enable_blend = FALSE;
    }
 
    /* Dual state blending changes the assignment of the output variables */
    if (context->last_was_dual_blend != enable_dual_blend)
    {
        context->shader_update_mask |= 1u << WINED3D_SHADER_TYPE_PIXEL;
        context->last_was_dual_blend = enable_dual_blend;
    }
 
    if (!enable_blend)
    {
        gl_info->gl_ops.gl.p_glDisable(GL_BLEND);
        checkGLcall("glDisable(GL_BLEND)");
        return;
    }
 
    gl_info->gl_ops.gl.p_glEnable(GL_BLEND);
    checkGLcall("glEnable(GL_BLEND)");
 
    rt_format = state->fb->render_targets[0]->format;
    gl_blend_from_d3d(&src_blend, &dst_blend,
            state->render_states[WINED3D_RS_SRCBLEND],
            state->render_states[WINED3D_RS_DESTBLEND], rt_format);
 
    /* Re-apply BLENDOP(ALPHA) because of a possible SEPARATEALPHABLENDENABLE change */
    if (!isStateDirty(context, STATE_RENDER(WINED3D_RS_BLENDOP)))
        state_blendop(context, state, STATE_RENDER(WINED3D_RS_BLENDOPALPHA));
 
    if (state->render_states[WINED3D_RS_SEPARATEALPHABLENDENABLE])
    {
        GLenum src_blend_alpha, dst_blend_alpha;
 
        /* Separate alpha blending requires GL_EXT_blend_function_separate, so make sure it is around */
        if (!context->gl_info->supported[EXT_BLEND_FUNC_SEPARATE])
        {
            WARN("Unsupported in local OpenGL implementation: glBlendFuncSeparate.\n");
            return;
        }
 
        gl_blend_from_d3d(&src_blend_alpha, &dst_blend_alpha,
                state->render_states[WINED3D_RS_SRCBLENDALPHA],
                state->render_states[WINED3D_RS_DESTBLENDALPHA], rt_format);
 
        GL_EXTCALL(glBlendFuncSeparate(src_blend, dst_blend, src_blend_alpha, dst_blend_alpha));
        checkGLcall("glBlendFuncSeparate");
    }
    else
    {
        TRACE("glBlendFunc src=%x, dst=%x.\n", src_blend, dst_blend);
        gl_info->gl_ops.gl.p_glBlendFunc(src_blend, dst_blend);
        checkGLcall("glBlendFunc");
    }
 
    /* Colorkey fixup for stage 0 alphaop depends on
     * WINED3D_RS_ALPHABLENDENABLE state, so it may need updating. */
    if (state->render_states[WINED3D_RS_COLORKEYENABLE])
        context_apply_state(context, state, STATE_TEXTURESTAGE(0, WINED3D_TSS_ALPHA_OP));
}
 
static void state_blendfactor_w(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    WARN("Unsupported in local OpenGL implementation: glBlendColor.\n");
}
 
static void state_blendfactor(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    struct wined3d_color color;
 
    TRACE("Setting blend factor to %#x.\n", state->render_states[WINED3D_RS_BLENDFACTOR]);
 
    wined3d_color_from_d3dcolor(&color, state->render_states[WINED3D_RS_BLENDFACTOR]);
    GL_EXTCALL(glBlendColor(color.r, color.g, color.b, color.a));
    checkGLcall("glBlendColor");
}
 
static void state_blend_object(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    BOOL alpha_to_coverage = FALSE;
 
    if (!gl_info->supported[ARB_MULTISAMPLE])
        return;
 
    if (state->blend_state)
    {
        struct wined3d_blend_state_desc *desc = &state->blend_state->desc;
        alpha_to_coverage = desc->alpha_to_coverage;
    }
 
    if (alpha_to_coverage)
        gl_info->gl_ops.gl.p_glEnable(GL_SAMPLE_ALPHA_TO_COVERAGE);
    else
        gl_info->gl_ops.gl.p_glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE);
 
    checkGLcall("blend state");
}
 
void state_alpha_test(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    int glParm = 0;
    float ref;
    BOOL enable_ckey = FALSE;
 
    TRACE("context %p, state %p, state_id %#x.\n", context, state, state_id);
 
    /* Find out if the texture on the first stage has a ckey set. The alpha
     * state func reads the texture settings, even though alpha and texture
     * are not grouped together. This is to avoid making a huge alpha +
     * texture + texture stage + ckey block due to the hardly used
     * WINED3D_RS_COLORKEYENABLE state(which is d3d <= 3 only). The texture
     * function will call alpha in case it finds some texture + colorkeyenable
     * combination which needs extra care. */
    if (state->textures[0] && (state->textures[0]->async.color_key_flags & WINED3D_CKEY_SRC_BLT))
        enable_ckey = TRUE;
 
    if (enable_ckey || context->last_was_ckey)
        context_apply_state(context, state, STATE_TEXTURESTAGE(0, WINED3D_TSS_ALPHA_OP));
    context->last_was_ckey = enable_ckey;
 
    if (state->render_states[WINED3D_RS_ALPHATESTENABLE]
            || (state->render_states[WINED3D_RS_COLORKEYENABLE] && enable_ckey))
    {
        gl_info->gl_ops.gl.p_glEnable(GL_ALPHA_TEST);
        checkGLcall("glEnable GL_ALPHA_TEST");
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_ALPHA_TEST);
        checkGLcall("glDisable GL_ALPHA_TEST");
        /* Alpha test is disabled, don't bother setting the params - it will happen on the next
         * enable call
         */
        return;
    }
 
    if (state->render_states[WINED3D_RS_COLORKEYENABLE] && enable_ckey)
    {
        glParm = GL_NOTEQUAL;
        ref = 0.0f;
    }
    else
    {
        ref = ((float)state->render_states[WINED3D_RS_ALPHAREF]) / 255.0f;
        glParm = wined3d_gl_compare_func(state->render_states[WINED3D_RS_ALPHAFUNC]);
    }
    if (glParm)
    {
        gl_info->gl_ops.gl.p_glAlphaFunc(glParm, ref);
        checkGLcall("glAlphaFunc");
    }
}
 
void state_clipping(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    unsigned int enable_mask;
 
    if (use_vs(state) && !context->d3d_info->vs_clipping)
    {
        static BOOL warned;
 
        /* The OpenGL spec says that clipping planes are disabled when using
         * shaders. Direct3D planes aren't, so that is an issue. The MacOS ATI
         * driver keeps clipping planes activated with shaders in some
         * conditions I got sick of tracking down. The shader state handler
         * disables all clip planes because of that - don't do anything here
         * and keep them disabled. */
        if (state->render_states[WINED3D_RS_CLIPPLANEENABLE] && !warned++)
            FIXME("Clipping not supported with vertex shaders.\n");
        return;
    }
 
    /* glEnable(GL_CLIP_PLANEx) doesn't apply to (ARB backend) vertex shaders.
     * The enabled / disabled planes are hardcoded into the shader. Update the
     * shader to update the enabled clipplanes. In case of fixed function, we
     * need to update the clipping field from ffp_vertex_settings. */
    context->shader_update_mask |= 1u << WINED3D_SHADER_TYPE_VERTEX;
 
    /* If enabling / disabling all
     * TODO: Is this correct? Doesn't D3DRS_CLIPPING disable clipping on the viewport frustrum?
     */
    enable_mask = state->render_states[WINED3D_RS_CLIPPING] ?
            state->render_states[WINED3D_RS_CLIPPLANEENABLE] : 0;
    context_enable_clip_distances(context, enable_mask);
}
 
static void state_specularenable(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    /* Originally this used glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL,GL_SEPARATE_SPECULAR_COLOR)
     * and (GL_LIGHT_MODEL_COLOR_CONTROL,GL_SINGLE_COLOR) to swap between enabled/disabled
     * specular color. This is wrong:
     * Separate specular color means the specular colour is maintained separately, whereas
     * single color means it is merged in. However in both cases they are being used to
     * some extent.
     * To disable specular color, set it explicitly to black and turn off GL_COLOR_SUM_EXT
     * NOTE: If not supported don't give FIXMEs the impact is really minimal and very few people are
     * running 1.4 yet!
     *
     *
     * If register combiners are enabled, enabling / disabling GL_COLOR_SUM has no effect.
     * Instead, we need to setup the FinalCombiner properly.
     *
     * The default setup for the FinalCombiner is:
     *
     * <variable>       <input>                             <mapping>               <usage>
     * GL_VARIABLE_A_NV GL_FOG,                             GL_UNSIGNED_IDENTITY_NV GL_ALPHA
     * GL_VARIABLE_B_NV GL_SPARE0_PLUS_SECONDARY_COLOR_NV   GL_UNSIGNED_IDENTITY_NV GL_RGB
     * GL_VARIABLE_C_NV GL_FOG                              GL_UNSIGNED_IDENTITY_NV GL_RGB
     * GL_VARIABLE_D_NV GL_ZERO                             GL_UNSIGNED_IDENTITY_NV GL_RGB
     * GL_VARIABLE_E_NV GL_ZERO                             GL_UNSIGNED_IDENTITY_NV GL_RGB
     * GL_VARIABLE_F_NV GL_ZERO                             GL_UNSIGNED_IDENTITY_NV GL_RGB
     * GL_VARIABLE_G_NV GL_SPARE0_NV                        GL_UNSIGNED_IDENTITY_NV GL_ALPHA
     *
     * That's pretty much fine as it is, except for variable B, which needs to take
     * either GL_SPARE0_PLUS_SECONDARY_COLOR_NV or GL_SPARE0_NV, depending on
     * whether WINED3D_RS_SPECULARENABLE is enabled or not.
     */
 
    TRACE("Setting specular enable state and materials\n");
    if (state->render_states[WINED3D_RS_SPECULARENABLE])
    {
        gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, (float *)&state->material.specular);
        checkGLcall("glMaterialfv");
 
        if (state->material.power > gl_info->limits.shininess)
        {
            /* glMaterialf man page says that the material says that GL_SHININESS must be between 0.0
             * and 128.0, although in d3d neither -1 nor 129 produce an error. GL_NV_max_light_exponent
             * allows bigger values. If the extension is supported, gl_info->limits.shininess contains the
             * value reported by the extension, otherwise 128. For values > gl_info->limits.shininess clamp
             * them, it should be safe to do so without major visual distortions.
             */
            WARN("Material power = %.8e, limit %.8e\n", state->material.power, gl_info->limits.shininess);
            gl_info->gl_ops.gl.p_glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, gl_info->limits.shininess);
        }
        else
        {
            gl_info->gl_ops.gl.p_glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, state->material.power);
        }
        checkGLcall("glMaterialf(GL_SHININESS)");
 
        if (gl_info->supported[EXT_SECONDARY_COLOR])
            gl_info->gl_ops.gl.p_glEnable(GL_COLOR_SUM_EXT);
        else
            TRACE("Specular colors cannot be enabled in this version of opengl\n");
        checkGLcall("glEnable(GL_COLOR_SUM)");
 
        if (gl_info->supported[NV_REGISTER_COMBINERS])
        {
            GL_EXTCALL(glFinalCombinerInputNV(GL_VARIABLE_B_NV, GL_SPARE0_PLUS_SECONDARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB));
            checkGLcall("glFinalCombinerInputNV()");
        }
    } else {
        static const GLfloat black[] = {0.0f, 0.0f, 0.0f, 0.0f};
 
        /* for the case of enabled lighting: */
        gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, &black[0]);
        checkGLcall("glMaterialfv");
 
        /* for the case of disabled lighting: */
        if (gl_info->supported[EXT_SECONDARY_COLOR])
            gl_info->gl_ops.gl.p_glDisable(GL_COLOR_SUM_EXT);
        else
            TRACE("Specular colors cannot be disabled in this version of opengl\n");
        checkGLcall("glDisable(GL_COLOR_SUM)");
 
        if (gl_info->supported[NV_REGISTER_COMBINERS])
        {
            GL_EXTCALL(glFinalCombinerInputNV(GL_VARIABLE_B_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB));
            checkGLcall("glFinalCombinerInputNV()");
        }
    }
 
    TRACE("diffuse %s\n", debug_color(&state->material.diffuse));
    TRACE("ambient %s\n", debug_color(&state->material.ambient));
    TRACE("specular %s\n", debug_color(&state->material.specular));
    TRACE("emissive %s\n", debug_color(&state->material.emissive));
 
    gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, (float *)&state->material.ambient);
    checkGLcall("glMaterialfv(GL_AMBIENT)");
    gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, (float *)&state->material.diffuse);
    checkGLcall("glMaterialfv(GL_DIFFUSE)");
    gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, (float *)&state->material.emissive);
    checkGLcall("glMaterialfv(GL_EMISSION)");
}
 
static void state_texfactor(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    struct wined3d_color color;
    unsigned int i;
 
    /* Note the texture color applies to all textures whereas
     * GL_TEXTURE_ENV_COLOR applies to active only. */
    wined3d_color_from_d3dcolor(&color, state->render_states[WINED3D_RS_TEXTUREFACTOR]);
 
    /* And now the default texture color as well */
    for (i = 0; i < context->d3d_info->limits.ffp_blend_stages; ++i)
    {
        /* Note the WINED3D_RS value applies to all textures, but GL has one
         * per texture, so apply it now ready to be used! */
        context_active_texture(context, gl_info, i);
 
        gl_info->gl_ops.gl.p_glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, &color.r);
        checkGLcall("glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, color);");
    }
}
 
static void renderstate_stencil_twosided(struct wined3d_context *context, GLint face,
        GLint func, GLint ref, GLuint mask, GLint stencilFail, GLint depthFail, GLint stencilPass)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    gl_info->gl_ops.gl.p_glEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);
    checkGLcall("glEnable(GL_STENCIL_TEST_TWO_SIDE_EXT)");
    GL_EXTCALL(glActiveStencilFaceEXT(face));
    checkGLcall("glActiveStencilFaceEXT(...)");
    gl_info->gl_ops.gl.p_glStencilFunc(func, ref, mask);
    checkGLcall("glStencilFunc(...)");
    gl_info->gl_ops.gl.p_glStencilOp(stencilFail, depthFail, stencilPass);
    checkGLcall("glStencilOp(...)");
}
 
static GLenum gl_stencil_op(enum wined3d_stencil_op op)
{
    switch (op)
    {
        case WINED3D_STENCIL_OP_KEEP:
            return GL_KEEP;
        case WINED3D_STENCIL_OP_ZERO:
            return GL_ZERO;
        case WINED3D_STENCIL_OP_REPLACE:
            return GL_REPLACE;
        case WINED3D_STENCIL_OP_INCR_SAT:
            return GL_INCR;
        case WINED3D_STENCIL_OP_DECR_SAT:
            return GL_DECR;
        case WINED3D_STENCIL_OP_INVERT:
            return GL_INVERT;
        case WINED3D_STENCIL_OP_INCR:
            return GL_INCR_WRAP;
        case WINED3D_STENCIL_OP_DECR:
            return GL_DECR_WRAP;
        default:
            if (!op)
                WARN("Unrecognized stencil op %#x.\n", op);
            else
                FIXME("Unrecognized stencil op %#x.\n", op);
            return GL_KEEP;
    }
}
 
static void state_stencil(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    DWORD onesided_enable;
    DWORD twosided_enable;
    GLint func;
    GLint func_back;
    GLint ref;
    GLuint mask;
    GLint stencilFail;
    GLint stencilFail_back;
    GLint stencilPass;
    GLint stencilPass_back;
    GLint depthFail;
    GLint depthFail_back;
 
    /* No stencil test without a stencil buffer. */
    if (!state->fb->depth_stencil)
    {
        gl_info->gl_ops.gl.p_glDisable(GL_STENCIL_TEST);
        checkGLcall("glDisable GL_STENCIL_TEST");
        return;
    }
 
    onesided_enable = state->render_states[WINED3D_RS_STENCILENABLE];
    twosided_enable = state->render_states[WINED3D_RS_TWOSIDEDSTENCILMODE];
    if (!(func = wined3d_gl_compare_func(state->render_states[WINED3D_RS_STENCILFUNC])))
        func = GL_ALWAYS;
    if (!(func_back = wined3d_gl_compare_func(state->render_states[WINED3D_RS_BACK_STENCILFUNC])))
        func_back = GL_ALWAYS;
    ref = state->render_states[WINED3D_RS_STENCILREF];
    mask = state->render_states[WINED3D_RS_STENCILMASK];
    stencilFail = gl_stencil_op(state->render_states[WINED3D_RS_STENCILFAIL]);
    depthFail = gl_stencil_op(state->render_states[WINED3D_RS_STENCILZFAIL]);
    stencilPass = gl_stencil_op(state->render_states[WINED3D_RS_STENCILPASS]);
    stencilFail_back = gl_stencil_op(state->render_states[WINED3D_RS_BACK_STENCILFAIL]);
    depthFail_back = gl_stencil_op(state->render_states[WINED3D_RS_BACK_STENCILZFAIL]);
    stencilPass_back = gl_stencil_op(state->render_states[WINED3D_RS_BACK_STENCILPASS]);
 
    TRACE("(onesided %d, twosided %d, ref %x, mask %x, "
            "GL_FRONT: func: %x, fail %x, zfail %x, zpass %x "
            "GL_BACK: func: %x, fail %x, zfail %x, zpass %x)\n",
            onesided_enable, twosided_enable, ref, mask,
            func, stencilFail, depthFail, stencilPass,
            func_back, stencilFail_back, depthFail_back, stencilPass_back);
 
    if (twosided_enable && onesided_enable)
    {
        gl_info->gl_ops.gl.p_glEnable(GL_STENCIL_TEST);
        checkGLcall("glEnable GL_STENCIL_TEST");
 
        if (gl_info->supported[WINED3D_GL_VERSION_2_0])
        {
            GL_EXTCALL(glStencilFuncSeparate(GL_FRONT, func, ref, mask));
            GL_EXTCALL(glStencilOpSeparate(GL_FRONT, stencilFail, depthFail, stencilPass));
            GL_EXTCALL(glStencilFuncSeparate(GL_BACK, func_back, ref, mask));
            GL_EXTCALL(glStencilOpSeparate(GL_BACK, stencilFail_back, depthFail_back, stencilPass_back));
            checkGLcall("setting two sided stencil state");
        }
        else if (gl_info->supported[EXT_STENCIL_TWO_SIDE])
        {
            /* Apply back first, then front. This function calls glActiveStencilFaceEXT,
             * which has an effect on the code below too. If we apply the front face
             * afterwards, we are sure that the active stencil face is set to front,
             * and other stencil functions which do not use two sided stencil do not have
             * to set it back
             */
            renderstate_stencil_twosided(context, GL_BACK,
                    func_back, ref, mask, stencilFail_back, depthFail_back, stencilPass_back);
            renderstate_stencil_twosided(context, GL_FRONT,
                    func, ref, mask, stencilFail, depthFail, stencilPass);
        }
        else if (gl_info->supported[ATI_SEPARATE_STENCIL])
        {
            GL_EXTCALL(glStencilFuncSeparateATI(func, func_back, ref, mask));
            checkGLcall("glStencilFuncSeparateATI(...)");
            GL_EXTCALL(glStencilOpSeparateATI(GL_FRONT, stencilFail, depthFail, stencilPass));
            checkGLcall("glStencilOpSeparateATI(GL_FRONT, ...)");
            GL_EXTCALL(glStencilOpSeparateATI(GL_BACK, stencilFail_back, depthFail_back, stencilPass_back));
            checkGLcall("glStencilOpSeparateATI(GL_BACK, ...)");
        }
        else
        {
            FIXME("Separate (two sided) stencil not supported on this version of OpenGL. Caps weren't honored?\n");
        }
    }
    else if(onesided_enable)
    {
        if (gl_info->supported[EXT_STENCIL_TWO_SIDE])
        {
            gl_info->gl_ops.gl.p_glDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);
            checkGLcall("glDisable(GL_STENCIL_TEST_TWO_SIDE_EXT)");
        }
 
        /* This code disables the ATI extension as well, since the standard stencil functions are equal
         * to calling the ATI functions with GL_FRONT_AND_BACK as face parameter
         */
        gl_info->gl_ops.gl.p_glEnable(GL_STENCIL_TEST);
        checkGLcall("glEnable GL_STENCIL_TEST");
        gl_info->gl_ops.gl.p_glStencilFunc(func, ref, mask);
        checkGLcall("glStencilFunc(...)");
        gl_info->gl_ops.gl.p_glStencilOp(stencilFail, depthFail, stencilPass);
        checkGLcall("glStencilOp(...)");
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_STENCIL_TEST);
        checkGLcall("glDisable GL_STENCIL_TEST");
    }
}
 
static void state_stencilwrite2s(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    DWORD mask = state->fb->depth_stencil ? state->render_states[WINED3D_RS_STENCILWRITEMASK] : 0;
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    GL_EXTCALL(glActiveStencilFaceEXT(GL_BACK));
    checkGLcall("glActiveStencilFaceEXT(GL_BACK)");
    gl_info->gl_ops.gl.p_glStencilMask(mask);
    checkGLcall("glStencilMask");
    GL_EXTCALL(glActiveStencilFaceEXT(GL_FRONT));
    checkGLcall("glActiveStencilFaceEXT(GL_FRONT)");
    gl_info->gl_ops.gl.p_glStencilMask(mask);
}
 
static void state_stencilwrite(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    DWORD mask = state->fb->depth_stencil ? state->render_states[WINED3D_RS_STENCILWRITEMASK] : 0;
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    gl_info->gl_ops.gl.p_glStencilMask(mask);
    checkGLcall("glStencilMask");
}
 
static void state_fog_vertexpart(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    TRACE("context %p, state %p, state_id %#x.\n", context, state, state_id);
 
    if (!state->render_states[WINED3D_RS_FOGENABLE])
        return;
 
    /* Table fog on: Never use fog coords, and use per-fragment fog */
    if (state->render_states[WINED3D_RS_FOGTABLEMODE] != WINED3D_FOG_NONE)
    {
        gl_info->gl_ops.gl.p_glHint(GL_FOG_HINT, GL_NICEST);
        if (context->fog_coord)
        {
            gl_info->gl_ops.gl.p_glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FRAGMENT_DEPTH_EXT);
            checkGLcall("glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FRAGMENT_DEPTH_EXT)");
            context->fog_coord = FALSE;
        }
 
        /* Range fog is only used with per-vertex fog in d3d */
        if (gl_info->supported[NV_FOG_DISTANCE])
        {
            gl_info->gl_ops.gl.p_glFogi(GL_FOG_DISTANCE_MODE_NV, GL_EYE_PLANE_ABSOLUTE_NV);
            checkGLcall("glFogi(GL_FOG_DISTANCE_MODE_NV, GL_EYE_PLANE_ABSOLUTE_NV)");
        }
        return;
    }
 
    /* Otherwise use per-vertex fog in any case */
    gl_info->gl_ops.gl.p_glHint(GL_FOG_HINT, GL_FASTEST);
 
    if (state->render_states[WINED3D_RS_FOGVERTEXMODE] == WINED3D_FOG_NONE || context->last_was_rhw)
    {
        /* No fog at all, or transformed vertices: Use fog coord */
        if (!context->fog_coord)
        {
            gl_info->gl_ops.gl.p_glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT);
            checkGLcall("glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT)");
            context->fog_coord = TRUE;
        }
    }
    else
    {
        /* Otherwise, use the fragment depth */
        if (context->fog_coord)
        {
            gl_info->gl_ops.gl.p_glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FRAGMENT_DEPTH_EXT);
            checkGLcall("glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FRAGMENT_DEPTH_EXT)");
            context->fog_coord = FALSE;
        }
 
        if (state->render_states[WINED3D_RS_RANGEFOGENABLE])
        {
            if (gl_info->supported[NV_FOG_DISTANCE])
            {
                gl_info->gl_ops.gl.p_glFogi(GL_FOG_DISTANCE_MODE_NV, GL_EYE_RADIAL_NV);
                checkGLcall("glFogi(GL_FOG_DISTANCE_MODE_NV, GL_EYE_RADIAL_NV)");
            }
            else
            {
                WARN("Range fog enabled, but not supported by this GL implementation.\n");
            }
        }
        else if (gl_info->supported[NV_FOG_DISTANCE])
        {
            gl_info->gl_ops.gl.p_glFogi(GL_FOG_DISTANCE_MODE_NV, GL_EYE_PLANE_ABSOLUTE_NV);
            checkGLcall("glFogi(GL_FOG_DISTANCE_MODE_NV, GL_EYE_PLANE_ABSOLUTE_NV)");
        }
    }
}
 
void state_fogstartend(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    float fogstart, fogend;
 
    get_fog_start_end(context, state, &fogstart, &fogend);
 
    gl_info->gl_ops.gl.p_glFogf(GL_FOG_START, fogstart);
    checkGLcall("glFogf(GL_FOG_START, fogstart)");
    TRACE("Fog Start == %f\n", fogstart);
 
    gl_info->gl_ops.gl.p_glFogf(GL_FOG_END, fogend);
    checkGLcall("glFogf(GL_FOG_END, fogend)");
    TRACE("Fog End == %f\n", fogend);
}
 
void state_fog_fragpart(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    enum fogsource new_source;
    DWORD fogstart = state->render_states[WINED3D_RS_FOGSTART];
    DWORD fogend = state->render_states[WINED3D_RS_FOGEND];
 
    TRACE("context %p, state %p, state_id %#x.\n", context, state, state_id);
 
    if (!state->render_states[WINED3D_RS_FOGENABLE])
    {
        /* No fog? Disable it, and we're done :-) */
        glDisableWINE(GL_FOG);
        checkGLcall("glDisable GL_FOG");
        return;
    }
 
    /* Fog Rules:
     *
     * With fixed function vertex processing, Direct3D knows 2 different fog input sources.
     * It can use the Z value of the vertex, or the alpha component of the specular color.
     * This depends on the fog vertex, fog table and the vertex declaration. If the Z value
     * is used, fogstart, fogend and the equation type are used, otherwise linear fog with
     * start = 255, end = 0 is used. Obviously the msdn is not very clear on that.
     *
     * FOGTABLEMODE != NONE:
     *  The Z value is used, with the equation specified, no matter what vertex type.
     *
     * FOGTABLEMODE == NONE, FOGVERTEXMODE != NONE, untransformed:
     *  Per vertex fog is calculated using the specified fog equation and the parameters
     *
     * FOGTABLEMODE == NONE, FOGVERTEXMODE != NONE, transformed, OR
     * FOGTABLEMODE == NONE, FOGVERTEXMODE == NONE, untransformed:
     *  Linear fog with start = 255.0, end = 0.0, input comes from the specular color
     *
     *
     * Rules for vertex fog with shaders:
     *
     * When mixing fixed function functionality with the programmable pipeline, D3D expects
     * the fog computation to happen during transformation while openGL expects it to happen
     * during rasterization. Also, prior to pixel shader 3.0 D3D handles fog blending after
     * the pixel shader while openGL always expects the pixel shader to handle the blending.
     * To solve this problem, WineD3D does:
     * 1) implement a linear fog equation and fog blending at the end of every pre 3.0 pixel
     * shader,
     * and 2) disables the fog computation (in either the fixed function or programmable
     * rasterizer) if using a vertex program.
     *
     * D3D shaders can provide an explicit fog coordinate. This fog coordinate is used with
     * D3DRS_FOGTABLEMODE==D3DFOG_NONE. The FOGVERTEXMODE is ignored, d3d always uses linear
     * fog with start=1.0 and end=0.0 in this case. This is similar to fog coordinates in
     * the specular color, a vertex shader counts as pretransformed geometry in this case.
     * There are some GL differences between specular fog coords and vertex shaders though.
     *
     * With table fog the vertex shader fog coordinate is ignored.
     *
     * If a fogtablemode and a fogvertexmode are specified, table fog is applied (with or
     * without shaders).
     */
 
    /* DX 7 sdk: "If both render states(vertex and table fog) are set to valid modes,
     * the system will apply only pixel(=table) fog effects."
     */
    if (state->render_states[WINED3D_RS_FOGTABLEMODE] == WINED3D_FOG_NONE)
    {
        if (use_vs(state))
        {
            gl_info->gl_ops.gl.p_glFogi(GL_FOG_MODE, GL_LINEAR);
            checkGLcall("glFogi(GL_FOG_MODE, GL_LINEAR)");
            new_source = FOGSOURCE_VS;
        }
        else
        {
            switch (state->render_states[WINED3D_RS_FOGVERTEXMODE])
            {
                /* If processed vertices are used, fall through to the NONE case */
                case WINED3D_FOG_EXP:
                    if (!context->last_was_rhw)
                    {
                        gl_info->gl_ops.gl.p_glFogi(GL_FOG_MODE, GL_EXP);
                        checkGLcall("glFogi(GL_FOG_MODE, GL_EXP)");
                        new_source = FOGSOURCE_FFP;
                        break;
                    }
                    /* drop through */
 
                case WINED3D_FOG_EXP2:
                    if (!context->last_was_rhw)
                    {
                        gl_info->gl_ops.gl.p_glFogi(GL_FOG_MODE, GL_EXP2);
                        checkGLcall("glFogi(GL_FOG_MODE, GL_EXP2)");
                        new_source = FOGSOURCE_FFP;
                        break;
                    }
                    /* drop through */
 
                case WINED3D_FOG_LINEAR:
                    if (!context->last_was_rhw)
                    {
                        gl_info->gl_ops.gl.p_glFogi(GL_FOG_MODE, GL_LINEAR);
                        checkGLcall("glFogi(GL_FOG_MODE, GL_LINEAR)");
                        new_source = FOGSOURCE_FFP;
                        break;
                    }
                    /* drop through */
 
                case WINED3D_FOG_NONE:
                    /* Both are none? According to msdn the alpha channel of
                     * the specular colour contains a fog factor. Set it in
                     * draw_primitive_immediate_mode(). Same happens with
                     * vertex fog on transformed vertices. */
                    new_source = FOGSOURCE_COORD;
                    gl_info->gl_ops.gl.p_glFogi(GL_FOG_MODE, GL_LINEAR);
                    checkGLcall("glFogi(GL_FOG_MODE, GL_LINEAR)");
                    break;
 
                default:
                    FIXME("Unexpected WINED3D_RS_FOGVERTEXMODE %#x.\n",
                            state->render_states[WINED3D_RS_FOGVERTEXMODE]);
                    new_source = FOGSOURCE_FFP; /* Make the compiler happy */
            }
        }
    } else {
        new_source = FOGSOURCE_FFP;
 
        switch (state->render_states[WINED3D_RS_FOGTABLEMODE])
        {
            case WINED3D_FOG_EXP:
                gl_info->gl_ops.gl.p_glFogi(GL_FOG_MODE, GL_EXP);
                checkGLcall("glFogi(GL_FOG_MODE, GL_EXP)");
                break;
 
            case WINED3D_FOG_EXP2:
                gl_info->gl_ops.gl.p_glFogi(GL_FOG_MODE, GL_EXP2);
                checkGLcall("glFogi(GL_FOG_MODE, GL_EXP2)");
                break;
 
            case WINED3D_FOG_LINEAR:
                gl_info->gl_ops.gl.p_glFogi(GL_FOG_MODE, GL_LINEAR);
                checkGLcall("glFogi(GL_FOG_MODE, GL_LINEAR)");
                break;
 
            case WINED3D_FOG_NONE:   /* Won't happen */
            default:
                FIXME("Unexpected WINED3D_RS_FOGTABLEMODE %#x.\n",
                        state->render_states[WINED3D_RS_FOGTABLEMODE]);
        }
    }
 
    glEnableWINE(GL_FOG);
    checkGLcall("glEnable GL_FOG");
    if (new_source != context->fog_source || fogstart == fogend)
    {
        context->fog_source = new_source;
        state_fogstartend(context, state, STATE_RENDER(WINED3D_RS_FOGSTART));
    }
}
 
void state_fogcolor(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    struct wined3d_color color;
 
    wined3d_color_from_d3dcolor(&color, state->render_states[WINED3D_RS_FOGCOLOR]);
    gl_info->gl_ops.gl.p_glFogfv(GL_FOG_COLOR, &color.r);
    checkGLcall("glFog GL_FOG_COLOR");
}
 
void state_fogdensity(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    union {
        DWORD d;
        float f;
    } tmpvalue;
 
    tmpvalue.d = state->render_states[WINED3D_RS_FOGDENSITY];
    gl_info->gl_ops.gl.p_glFogfv(GL_FOG_DENSITY, &tmpvalue.f);
    checkGLcall("glFogf(GL_FOG_DENSITY, (float) Value)");
}
 
static void state_colormat(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    GLenum Parm = 0;
 
    /* Depends on the decoded vertex declaration to read the existence of diffuse data.
     * The vertex declaration will call this function if the fixed function pipeline is used.
     */
 
    if(isStateDirty(context, STATE_VDECL)) {
        return;
    }
 
    context->num_untracked_materials = 0;
    if ((context->stream_info.use_map & (1u << WINED3D_FFP_DIFFUSE))
            && state->render_states[WINED3D_RS_COLORVERTEX])
    {
        TRACE("diff %d, amb %d, emis %d, spec %d\n",
                state->render_states[WINED3D_RS_DIFFUSEMATERIALSOURCE],
                state->render_states[WINED3D_RS_AMBIENTMATERIALSOURCE],
                state->render_states[WINED3D_RS_EMISSIVEMATERIALSOURCE],
                state->render_states[WINED3D_RS_SPECULARMATERIALSOURCE]);
 
        if (state->render_states[WINED3D_RS_DIFFUSEMATERIALSOURCE] == WINED3D_MCS_COLOR1)
        {
            if (state->render_states[WINED3D_RS_AMBIENTMATERIALSOURCE] == WINED3D_MCS_COLOR1)
                Parm = GL_AMBIENT_AND_DIFFUSE;
            else
                Parm = GL_DIFFUSE;
            if (state->render_states[WINED3D_RS_EMISSIVEMATERIALSOURCE] == WINED3D_MCS_COLOR1)
            {
                context->untracked_materials[context->num_untracked_materials] = GL_EMISSION;
                context->num_untracked_materials++;
            }
            if (state->render_states[WINED3D_RS_SPECULARMATERIALSOURCE] == WINED3D_MCS_COLOR1)
            {
                context->untracked_materials[context->num_untracked_materials] = GL_SPECULAR;
                context->num_untracked_materials++;
            }
        }
        else if (state->render_states[WINED3D_RS_AMBIENTMATERIALSOURCE] == WINED3D_MCS_COLOR1)
        {
            Parm = GL_AMBIENT;
            if (state->render_states[WINED3D_RS_EMISSIVEMATERIALSOURCE] == WINED3D_MCS_COLOR1)
            {
                context->untracked_materials[context->num_untracked_materials] = GL_EMISSION;
                context->num_untracked_materials++;
            }
            if (state->render_states[WINED3D_RS_SPECULARMATERIALSOURCE] == WINED3D_MCS_COLOR1)
            {
                context->untracked_materials[context->num_untracked_materials] = GL_SPECULAR;
                context->num_untracked_materials++;
            }
        }
        else if (state->render_states[WINED3D_RS_EMISSIVEMATERIALSOURCE] == WINED3D_MCS_COLOR1)
        {
            Parm = GL_EMISSION;
            if (state->render_states[WINED3D_RS_SPECULARMATERIALSOURCE] == WINED3D_MCS_COLOR1)
            {
                context->untracked_materials[context->num_untracked_materials] = GL_SPECULAR;
                context->num_untracked_materials++;
            }
        }
        else if (state->render_states[WINED3D_RS_SPECULARMATERIALSOURCE] == WINED3D_MCS_COLOR1)
        {
            Parm = GL_SPECULAR;
        }
    }
 
    /* Nothing changed, return. */
    if (Parm == context->tracking_parm) return;
 
    if (!Parm)
    {
        gl_info->gl_ops.gl.p_glDisable(GL_COLOR_MATERIAL);
        checkGLcall("glDisable GL_COLOR_MATERIAL");
    }
    else
    {
        gl_info->gl_ops.gl.p_glColorMaterial(GL_FRONT_AND_BACK, Parm);
        checkGLcall("glColorMaterial(GL_FRONT_AND_BACK, Parm)");
        gl_info->gl_ops.gl.p_glEnable(GL_COLOR_MATERIAL);
        checkGLcall("glEnable(GL_COLOR_MATERIAL)");
    }
 
    /* Apparently calls to glMaterialfv are ignored for properties we're
     * tracking with glColorMaterial, so apply those here. */
    switch (context->tracking_parm)
    {
        case GL_AMBIENT_AND_DIFFUSE:
            gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, (float *)&state->material.ambient);
            gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, (float *)&state->material.diffuse);
            checkGLcall("glMaterialfv");
            break;
 
        case GL_DIFFUSE:
            gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, (float *)&state->material.diffuse);
            checkGLcall("glMaterialfv");
            break;
 
        case GL_AMBIENT:
            gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, (float *)&state->material.ambient);
            checkGLcall("glMaterialfv");
            break;
 
        case GL_EMISSION:
            gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, (float *)&state->material.emissive);
            checkGLcall("glMaterialfv");
            break;
 
        case GL_SPECULAR:
            /* Only change material color if specular is enabled, otherwise it is set to black */
            if (state->render_states[WINED3D_RS_SPECULARENABLE])
            {
                gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, (float *)&state->material.specular);
                checkGLcall("glMaterialfv");
            }
            else
            {
                static const GLfloat black[] = {0.0f, 0.0f, 0.0f, 0.0f};
                gl_info->gl_ops.gl.p_glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, &black[0]);
                checkGLcall("glMaterialfv");
            }
            break;
    }
 
    context->tracking_parm = Parm;
}
 
static void state_linepattern(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    union
    {
        DWORD d;
        struct wined3d_line_pattern lp;
    } tmppattern;
    tmppattern.d = state->render_states[WINED3D_RS_LINEPATTERN];
 
    TRACE("Line pattern: repeat %d bits %x.\n", tmppattern.lp.repeat_factor, tmppattern.lp.line_pattern);
 
    if (tmppattern.lp.repeat_factor)
    {
        gl_info->gl_ops.gl.p_glLineStipple(tmppattern.lp.repeat_factor, tmppattern.lp.line_pattern);
        checkGLcall("glLineStipple(repeat, linepattern)");
        gl_info->gl_ops.gl.p_glEnable(GL_LINE_STIPPLE);
        checkGLcall("glEnable(GL_LINE_STIPPLE);");
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_LINE_STIPPLE);
        checkGLcall("glDisable(GL_LINE_STIPPLE);");
    }
}
 
static void state_linepattern_w(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    static unsigned int once;
 
    if (!once++)
        FIXME("Setting line patterns is not supported in OpenGL core contexts.\n");
}
 
static void state_normalize(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (isStateDirty(context, STATE_VDECL))
        return;
 
    /* Without vertex normals, we set the current normal to 0/0/0 to remove the diffuse factor
     * from the opengl lighting equation, as d3d does. Normalization of 0/0/0 can lead to a division
     * by zero and is not properly defined in opengl, so avoid it
     */
    if (state->render_states[WINED3D_RS_NORMALIZENORMALS]
            && (context->stream_info.use_map & (1u << WINED3D_FFP_NORMAL)))
    {
        gl_info->gl_ops.gl.p_glEnable(GL_NORMALIZE);
        checkGLcall("glEnable(GL_NORMALIZE);");
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_NORMALIZE);
        checkGLcall("glDisable(GL_NORMALIZE);");
    }
}
 
static void state_psizemin_w(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    float min, max;
 
    get_pointsize_minmax(context, state, &min, &max);
 
    if (min != 1.0f)
        FIXME("WINED3D_RS_POINTSIZE_MIN value %.8e not supported on this OpenGL implementation.\n", min);
    if (max != 64.0f)
        FIXME("WINED3D_RS_POINTSIZE_MAX value %.8e not supported on this OpenGL implementation.\n", max);
}
 
static void state_psizemin_ext(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    float min, max;
 
    get_pointsize_minmax(context, state, &min, &max);
 
    GL_EXTCALL(glPointParameterfEXT)(GL_POINT_SIZE_MIN_EXT, min);
    checkGLcall("glPointParameterfEXT(...)");
    GL_EXTCALL(glPointParameterfEXT)(GL_POINT_SIZE_MAX_EXT, max);
    checkGLcall("glPointParameterfEXT(...)");
}
 
static void state_psizemin_arb(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    float min, max;
 
    get_pointsize_minmax(context, state, &min, &max);
 
    GL_EXTCALL(glPointParameterfARB)(GL_POINT_SIZE_MIN_ARB, min);
    checkGLcall("glPointParameterfARB(...)");
    GL_EXTCALL(glPointParameterfARB)(GL_POINT_SIZE_MAX_ARB, max);
    checkGLcall("glPointParameterfARB(...)");
}
 
static void state_pscale(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    float att[3];
    float pointsize;
 
    get_pointsize(context, state, &pointsize, att);
 
    if (gl_info->supported[ARB_POINT_PARAMETERS])
    {
        GL_EXTCALL(glPointParameterfvARB)(GL_POINT_DISTANCE_ATTENUATION_ARB, att);
        checkGLcall("glPointParameterfvARB(GL_DISTANCE_ATTENUATION_ARB, ...)");
    }
    else if (gl_info->supported[EXT_POINT_PARAMETERS])
    {
        GL_EXTCALL(glPointParameterfvEXT)(GL_DISTANCE_ATTENUATION_EXT, att);
        checkGLcall("glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT, ...)");
    }
    else if (state->render_states[WINED3D_RS_POINTSCALEENABLE])
    {
        WARN("POINT_PARAMETERS not supported in this version of opengl\n");
    }
 
    gl_info->gl_ops.gl.p_glPointSize(max(pointsize, FLT_MIN));
    checkGLcall("glPointSize(...);");
}
 
static void state_debug_monitor(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    WARN("token: %#x.\n", state->render_states[WINED3D_RS_DEBUGMONITORTOKEN]);
}
 
static void state_colorwrite(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    DWORD mask0 = state->render_states[WINED3D_RS_COLORWRITEENABLE];
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    TRACE("Color mask: r(%d) g(%d) b(%d) a(%d)\n",
            mask0 & WINED3DCOLORWRITEENABLE_RED ? 1 : 0,
            mask0 & WINED3DCOLORWRITEENABLE_GREEN ? 1 : 0,
            mask0 & WINED3DCOLORWRITEENABLE_BLUE ? 1 : 0,
            mask0 & WINED3DCOLORWRITEENABLE_ALPHA ? 1 : 0);
    gl_info->gl_ops.gl.p_glColorMask(mask0 & WINED3DCOLORWRITEENABLE_RED ? GL_TRUE : GL_FALSE,
            mask0 & WINED3DCOLORWRITEENABLE_GREEN ? GL_TRUE : GL_FALSE,
            mask0 & WINED3DCOLORWRITEENABLE_BLUE ? GL_TRUE : GL_FALSE,
            mask0 & WINED3DCOLORWRITEENABLE_ALPHA ? GL_TRUE : GL_FALSE);
    checkGLcall("glColorMask(...)");
 
    /* FIXME: WINED3D_RS_COLORWRITEENABLE1 .. WINED3D_RS_COLORWRITEENABLE7 not implemented. */
}
 
static void set_color_mask(const struct wined3d_gl_info *gl_info, UINT index, DWORD mask)
{
    GL_EXTCALL(glColorMaski(index,
            mask & WINED3DCOLORWRITEENABLE_RED ? GL_TRUE : GL_FALSE,
            mask & WINED3DCOLORWRITEENABLE_GREEN ? GL_TRUE : GL_FALSE,
            mask & WINED3DCOLORWRITEENABLE_BLUE ? GL_TRUE : GL_FALSE,
            mask & WINED3DCOLORWRITEENABLE_ALPHA ? GL_TRUE : GL_FALSE));
    checkGLcall("glColorMaski");
}
 
static void state_colorwrite_i(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    int index;
 
    if (state_id == WINED3D_RS_COLORWRITEENABLE) index = 0;
    else if (state_id <= WINED3D_RS_COLORWRITEENABLE3) index = state_id - WINED3D_RS_COLORWRITEENABLE1 + 1;
    else if (state_id <= WINED3D_RS_COLORWRITEENABLE7) index = state_id - WINED3D_RS_COLORWRITEENABLE4 + 4;
    else return;
 
    if (index >= gl_info->limits.buffers)
        WARN("Ignoring color write value for index %d, because gpu only supports %d render targets\n", index, gl_info->limits.buffers);
 
    set_color_mask(context->gl_info, index, state->render_states[state_id]);
}
 
static void state_localviewer(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (state->render_states[WINED3D_RS_LOCALVIEWER])
    {
        gl_info->gl_ops.gl.p_glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
        checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1)");
    }
    else
    {
        gl_info->gl_ops.gl.p_glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 0);
        checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 0)");
    }
}
 
static void state_lastpixel(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_LASTPIXEL])
    {
        TRACE("Last Pixel Drawing Enabled\n");
    }
    else
    {
        static BOOL warned;
        if (!warned) {
            FIXME("Last Pixel Drawing Disabled, not handled yet\n");
            warned = TRUE;
        } else {
            TRACE("Last Pixel Drawing Disabled, not handled yet\n");
        }
    }
}
 
void state_pointsprite_w(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    static BOOL warned;
 
    /* TODO: NV_POINT_SPRITE */
    if (!warned && state->render_states[WINED3D_RS_POINTSPRITEENABLE])
    {
        /* A FIXME, not a WARN because point sprites should be software emulated if not supported by HW */
        FIXME("Point sprites not supported\n");
        warned = TRUE;
    }
}
 
void state_pointsprite(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (state->render_states[WINED3D_RS_POINTSPRITEENABLE])
    {
        gl_info->gl_ops.gl.p_glEnable(GL_POINT_SPRITE_ARB);
        checkGLcall("glEnable(GL_POINT_SPRITE_ARB)");
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_POINT_SPRITE_ARB);
        checkGLcall("glDisable(GL_POINT_SPRITE_ARB)");
    }
}
 
static void state_wrap(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    static unsigned int once;
 
    if ((state->render_states[WINED3D_RS_WRAP0]
            || state->render_states[WINED3D_RS_WRAP1]
            || state->render_states[WINED3D_RS_WRAP2]
            || state->render_states[WINED3D_RS_WRAP3]
            || state->render_states[WINED3D_RS_WRAP4]
            || state->render_states[WINED3D_RS_WRAP5]
            || state->render_states[WINED3D_RS_WRAP6]
            || state->render_states[WINED3D_RS_WRAP7]
            || state->render_states[WINED3D_RS_WRAP8]
            || state->render_states[WINED3D_RS_WRAP9]
            || state->render_states[WINED3D_RS_WRAP10]
            || state->render_states[WINED3D_RS_WRAP11]
            || state->render_states[WINED3D_RS_WRAP12]
            || state->render_states[WINED3D_RS_WRAP13]
            || state->render_states[WINED3D_RS_WRAP14]
            || state->render_states[WINED3D_RS_WRAP15])
            && !once++)
        FIXME("(WINED3D_RS_WRAP0) Texture wrapping not yet supported.\n");
}
 
static void state_msaa_w(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_MULTISAMPLEANTIALIAS])
        WARN("Multisample antialiasing not supported by GL.\n");
}
 
static void state_msaa(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (state->render_states[WINED3D_RS_MULTISAMPLEANTIALIAS])
    {
        gl_info->gl_ops.gl.p_glEnable(GL_MULTISAMPLE_ARB);
        checkGLcall("glEnable(GL_MULTISAMPLE_ARB)");
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_MULTISAMPLE_ARB);
        checkGLcall("glDisable(GL_MULTISAMPLE_ARB)");
    }
}
 
static void state_line_antialias(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (state->render_states[WINED3D_RS_EDGEANTIALIAS]
            || state->render_states[WINED3D_RS_ANTIALIASEDLINEENABLE])
    {
        gl_info->gl_ops.gl.p_glEnable(GL_LINE_SMOOTH);
        checkGLcall("glEnable(GL_LINE_SMOOTH)");
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_LINE_SMOOTH);
        checkGLcall("glDisable(GL_LINE_SMOOTH)");
    }
}
 
static void state_scissor(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (state->render_states[WINED3D_RS_SCISSORTESTENABLE])
    {
        gl_info->gl_ops.gl.p_glEnable(GL_SCISSOR_TEST);
        checkGLcall("glEnable(GL_SCISSOR_TEST)");
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_SCISSOR_TEST);
        checkGLcall("glDisable(GL_SCISSOR_TEST)");
    }
}
 
/* The Direct3D depth bias is specified in normalized depth coordinates. In
 * OpenGL the bias is specified in units of "the smallest value that is
 * guaranteed to produce a resolvable offset for a given implementation". To
 * convert from D3D to GL we need to divide the D3D depth bias by that value.
 * We try to detect the value from GL with test draws. On most drivers (r300g,
 * 600g, Nvidia, i965 on Mesa) the value is 2^23 for fixed point depth buffers,
 * for r200 and i965 on OSX it is 2^24, for r500 on OSX it is 2^22. For floating
 * point buffers it is 2^22, 2^23 or 2^24 depending on the GPU. The value does
 * not depend on the depth buffer precision on any driver.
 *
 * Two games that are picky regarding depth bias are Mass Effect 2 (flickering
 * decals) and F.E.A.R and F.E.A.R. 2 (semi-transparent guns).
 *
 * Note that SLOPESCALEDEPTHBIAS is a scaling factor for the depth slope, and
 * doesn't need to be scaled to account for GL vs D3D differences. */
static void state_depthbias(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (state->render_states[WINED3D_RS_SLOPESCALEDEPTHBIAS]
            || state->render_states[WINED3D_RS_DEPTHBIAS])
    {
        const struct wined3d_rendertarget_view *depth = state->fb->depth_stencil;
        float factor, units, scale;
 
        union
        {
            DWORD d;
            float f;
        } scale_bias, const_bias, bias_clamp;
 
        scale_bias.d = state->render_states[WINED3D_RS_SLOPESCALEDEPTHBIAS];
        const_bias.d = state->render_states[WINED3D_RS_DEPTHBIAS];
        bias_clamp.d = state->render_states[WINED3D_RS_DEPTHBIASCLAMP];
 
        if (context->d3d_info->wined3d_creation_flags & WINED3D_LEGACY_DEPTH_BIAS)
        {
            factor = units = -(float)const_bias.d;
        }
        else
        {
            if (depth)
            {
                scale = depth->format->depth_bias_scale;
 
                TRACE("Depth format %s, using depthbias scale of %.8e.\n",
                        debug_d3dformat(depth->format->id), scale);
            }
            else
            {
                /* The context manager will reapply this state on a depth stencil change */
                TRACE("No depth stencil, using depth bias scale of 0.0.\n");
                scale = 0.0f;
            }
 
            factor = scale_bias.f;
            units = const_bias.f * scale;
        }
 
        gl_info->gl_ops.gl.p_glEnable(GL_POLYGON_OFFSET_FILL);
        if (gl_info->supported[EXT_POLYGON_OFFSET_CLAMP])
        {
            GL_EXTCALL(glPolygonOffsetClampEXT(factor, units, bias_clamp.f));
            checkGLcall("glPolygonOffsetClampEXT(...)");
        }
        else
        {
            if (bias_clamp.f)
                WARN("EXT_polygon_offset_clamp extension missing, no support for depth bias clamping.\n");
 
            gl_info->gl_ops.gl.p_glPolygonOffset(factor, units);
        }
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_POLYGON_OFFSET_FILL);
    }
 
    checkGLcall("depth bias");
}
 
static void state_depthclip(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (state->render_states[WINED3D_RS_DEPTHCLIP])
    {
        gl_info->gl_ops.gl.p_glDisable(GL_DEPTH_CLAMP);
        checkGLcall("glDisable(GL_DEPTH_CLAMP)");
    }
    else
    {
        gl_info->gl_ops.gl.p_glEnable(GL_DEPTH_CLAMP);
        checkGLcall("glEnable(GL_DEPTH_CLAMP)");
    }
}
 
static void state_depthclip_w(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (!state->render_states[WINED3D_RS_DEPTHCLIP])
        FIXME("Depth clamping not supported by GL.\n");
}
 
static void state_zvisible(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_ZVISIBLE])
        FIXME("WINED3D_RS_ZVISIBLE not implemented.\n");
}
 
static void state_stippledalpha(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_STIPPLEDALPHA])
        FIXME("Stippled Alpha not supported yet.\n");
}
 
static void state_antialias(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_ANTIALIAS])
        FIXME("Antialias not supported yet.\n");
}
 
static void state_multisampmask(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_MULTISAMPLEMASK] != 0xffffffff)
        FIXME("WINED3D_RS_MULTISAMPLEMASK %#x not yet implemented.\n",
                state->render_states[WINED3D_RS_MULTISAMPLEMASK]);
}
 
static void state_patchedgestyle(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_PATCHEDGESTYLE] != WINED3D_PATCH_EDGE_DISCRETE)
        FIXME("WINED3D_RS_PATCHEDGESTYLE %#x not yet implemented.\n",
                state->render_states[WINED3D_RS_PATCHEDGESTYLE]);
}
 
static void state_patchsegments(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    union {
        DWORD d;
        float f;
    } tmpvalue;
    tmpvalue.f = 1.0f;
 
    if (state->render_states[WINED3D_RS_PATCHSEGMENTS] != tmpvalue.d)
    {
        static BOOL displayed = FALSE;
 
        tmpvalue.d = state->render_states[WINED3D_RS_PATCHSEGMENTS];
        if(!displayed)
            FIXME("(WINED3D_RS_PATCHSEGMENTS,%f) not yet implemented\n", tmpvalue.f);
 
        displayed = TRUE;
    }
}
 
static void state_positiondegree(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_POSITIONDEGREE] != WINED3D_DEGREE_CUBIC)
        FIXME("WINED3D_RS_POSITIONDEGREE %#x not yet implemented.\n",
                state->render_states[WINED3D_RS_POSITIONDEGREE]);
}
 
static void state_normaldegree(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_NORMALDEGREE] != WINED3D_DEGREE_LINEAR)
        FIXME("WINED3D_RS_NORMALDEGREE %#x not yet implemented.\n",
                state->render_states[WINED3D_RS_NORMALDEGREE]);
}
 
static void state_tessellation(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_ENABLEADAPTIVETESSELLATION])
        FIXME("WINED3D_RS_ENABLEADAPTIVETESSELLATION %#x not yet implemented.\n",
                state->render_states[WINED3D_RS_ENABLEADAPTIVETESSELLATION]);
}
 
static void state_nvdb(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    union {
        DWORD d;
        float f;
    } zmin, zmax;
 
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    if (state->render_states[WINED3D_RS_ADAPTIVETESS_X] == WINED3DFMT_NVDB)
    {
        zmin.d = state->render_states[WINED3D_RS_ADAPTIVETESS_Z];
        zmax.d = state->render_states[WINED3D_RS_ADAPTIVETESS_W];
 
        /* If zmin is larger than zmax INVALID_VALUE error is generated.
         * In d3d9 test is not performed in this case*/
        if (zmin.f <= zmax.f)
        {
            gl_info->gl_ops.gl.p_glEnable(GL_DEPTH_BOUNDS_TEST_EXT);
            checkGLcall("glEnable(GL_DEPTH_BOUNDS_TEST_EXT)");
            GL_EXTCALL(glDepthBoundsEXT(zmin.f, zmax.f));
            checkGLcall("glDepthBoundsEXT(...)");
        }
        else
        {
            gl_info->gl_ops.gl.p_glDisable(GL_DEPTH_BOUNDS_TEST_EXT);
            checkGLcall("glDisable(GL_DEPTH_BOUNDS_TEST_EXT)");
        }
    }
    else
    {
        gl_info->gl_ops.gl.p_glDisable(GL_DEPTH_BOUNDS_TEST_EXT);
        checkGLcall("glDisable(GL_DEPTH_BOUNDS_TEST_EXT)");
    }
 
    state_tessellation(context, state, STATE_RENDER(WINED3D_RS_ENABLEADAPTIVETESSELLATION));
}
 
static void state_wrapu(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_WRAPU])
        FIXME("Render state WINED3D_RS_WRAPU not implemented yet.\n");
}
 
static void state_wrapv(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_WRAPV])
        FIXME("Render state WINED3D_RS_WRAPV not implemented yet.\n");
}
 
static void state_monoenable(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_MONOENABLE])
        FIXME("Render state WINED3D_RS_MONOENABLE not implemented yet.\n");
}
 
static void state_rop2(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_ROP2])
        FIXME("Render state WINED3D_RS_ROP2 not implemented yet.\n");
}
 
static void state_planemask(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_PLANEMASK])
        FIXME("Render state WINED3D_RS_PLANEMASK not implemented yet.\n");
}
 
static void state_subpixel(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_SUBPIXEL])
        FIXME("Render state WINED3D_RS_SUBPIXEL not implemented yet.\n");
}
 
static void state_subpixelx(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_SUBPIXELX])
        FIXME("Render state WINED3D_RS_SUBPIXELX not implemented yet.\n");
}
 
static void state_stippleenable(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_STIPPLEENABLE])
        FIXME("Render state WINED3D_RS_STIPPLEENABLE not implemented yet.\n");
}
 
static void state_mipmaplodbias(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_MIPMAPLODBIAS])
        FIXME("Render state WINED3D_RS_MIPMAPLODBIAS not implemented yet.\n");
}
 
static void state_anisotropy(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_ANISOTROPY])
        FIXME("Render state WINED3D_RS_ANISOTROPY not implemented yet.\n");
}
 
static void state_flushbatch(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_FLUSHBATCH])
        FIXME("Render state WINED3D_RS_FLUSHBATCH not implemented yet.\n");
}
 
static void state_translucentsi(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_TRANSLUCENTSORTINDEPENDENT])
        FIXME("Render state WINED3D_RS_TRANSLUCENTSORTINDEPENDENT not implemented yet.\n");
}
 
static void state_extents(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_EXTENTS])
        FIXME("Render state WINED3D_RS_EXTENTS not implemented yet.\n");
}
 
static void state_ckeyblend(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    if (state->render_states[WINED3D_RS_COLORKEYBLENDENABLE])
        FIXME("Render state WINED3D_RS_COLORKEYBLENDENABLE not implemented yet.\n");
}
 
static void state_swvp(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    static int once;
    if (state->render_states[WINED3D_RS_SOFTWAREVERTEXPROCESSING])
    {
        if (!once++)
            FIXME("Software vertex processing not implemented.\n");
    }
}
 
static void get_src_and_opr(DWORD arg, BOOL is_alpha, GLenum* source, GLenum* operand) {
    /* The WINED3DTA_ALPHAREPLICATE flag specifies the alpha component of the
    * input should be used for all input components. The WINED3DTA_COMPLEMENT
    * flag specifies the complement of the input should be used. */
    BOOL from_alpha = is_alpha || arg & WINED3DTA_ALPHAREPLICATE;
    BOOL complement = arg & WINED3DTA_COMPLEMENT;
 
    /* Calculate the operand */
    if (complement) {
        if (from_alpha) *operand = GL_ONE_MINUS_SRC_ALPHA;
        else *operand = GL_ONE_MINUS_SRC_COLOR;
    } else {
        if (from_alpha) *operand = GL_SRC_ALPHA;
        else *operand = GL_SRC_COLOR;
    }
 
    /* Calculate the source */
    switch (arg & WINED3DTA_SELECTMASK) {
        case WINED3DTA_CURRENT: *source = GL_PREVIOUS_EXT; break;
        case WINED3DTA_DIFFUSE: *source = GL_PRIMARY_COLOR_EXT; break;
        case WINED3DTA_TEXTURE: *source = GL_TEXTURE; break;
        case WINED3DTA_TFACTOR: *source = GL_CONSTANT_EXT; break;
        case WINED3DTA_SPECULAR:
            /*
            * According to the GL_ARB_texture_env_combine specs, SPECULAR is
            * 'Secondary color' and isn't supported until base GL supports it
            * There is no concept of temp registers as far as I can tell
            */
            FIXME("Unhandled texture arg WINED3DTA_SPECULAR\n");
            *source = GL_TEXTURE;
            break;
        default:
            FIXME("Unrecognized texture arg %#x\n", arg);
            *source = GL_TEXTURE;
            break;
    }
}
 
/* Setup the texture operations texture stage states */
static void set_tex_op(const struct wined3d_gl_info *gl_info, const struct wined3d_state *state,
        BOOL isAlpha, int Stage, enum wined3d_texture_op op, DWORD arg1, DWORD arg2, DWORD arg3)
{
    GLenum src1, src2, src3;
    GLenum opr1, opr2, opr3;
    GLenum comb_target;
    GLenum src0_target, src1_target, src2_target;
    GLenum opr0_target, opr1_target, opr2_target;
    GLenum scal_target;
    GLenum opr=0, invopr, src3_target, opr3_target;
    BOOL Handled = FALSE;
 
    TRACE("Alpha?(%d), Stage:%d Op(%s), a1(%d), a2(%d), a3(%d)\n", isAlpha, Stage, debug_d3dtop(op), arg1, arg2, arg3);
 
    /* Operations usually involve two args, src0 and src1 and are operations
     * of the form (a1 <operation> a2). However, some of the more complex
     * operations take 3 parameters. Instead of the (sensible) addition of a3,
     * Microsoft added in a third parameter called a0. Therefore these are
     * operations of the form a0 <operation> a1 <operation> a2. I.e., the new
     * parameter goes to the front.
     *
     * However, below we treat the new (a0) parameter as src2/opr2, so in the
     * actual functions below, expect their syntax to differ slightly to those
     * listed in the manuals. I.e., replace arg1 with arg3, arg2 with arg1 and
     * arg3 with arg2. This affects WINED3DTOP_MULTIPLYADD and WINED3DTOP_LERP. */
 
    if (isAlpha)
    {
        comb_target = GL_COMBINE_ALPHA;
        src0_target = GL_SOURCE0_ALPHA;
        src1_target = GL_SOURCE1_ALPHA;
        src2_target = GL_SOURCE2_ALPHA;
        opr0_target = GL_OPERAND0_ALPHA;
        opr1_target = GL_OPERAND1_ALPHA;
        opr2_target = GL_OPERAND2_ALPHA;
        scal_target = GL_ALPHA_SCALE;
    }
    else
    {
        comb_target = GL_COMBINE_RGB;
        src0_target = GL_SOURCE0_RGB;
        src1_target = GL_SOURCE1_RGB;
        src2_target = GL_SOURCE2_RGB;
        opr0_target = GL_OPERAND0_RGB;
        opr1_target = GL_OPERAND1_RGB;
        opr2_target = GL_OPERAND2_RGB;
        scal_target = GL_RGB_SCALE;
    }
 
        /* If a texture stage references an invalid texture unit the stage just
        * passes through the result from the previous stage */
    if (is_invalid_op(state, Stage, op, arg1, arg2, arg3))
    {
        arg1 = WINED3DTA_CURRENT;
        op = WINED3D_TOP_SELECT_ARG1;
    }
 
    if (isAlpha && !state->textures[Stage] && arg1 == WINED3DTA_TEXTURE)
    {
        get_src_and_opr(WINED3DTA_DIFFUSE, isAlpha, &src1, &opr1);
    } else {
        get_src_and_opr(arg1, isAlpha, &src1, &opr1);
    }
    get_src_and_opr(arg2, isAlpha, &src2, &opr2);
    get_src_and_opr(arg3, isAlpha, &src3, &opr3);
 
    TRACE("ct(%x), 1:(%x,%x), 2:(%x,%x), 3:(%x,%x)\n", comb_target, src1, opr1, src2, opr2, src3, opr3);
 
    Handled = TRUE; /* Assume will be handled */
 
    /* Other texture operations require special extensions: */
    if (gl_info->supported[NV_TEXTURE_ENV_COMBINE4])
    {
        if (isAlpha) {
            opr = GL_SRC_ALPHA;
            invopr = GL_ONE_MINUS_SRC_ALPHA;
            src3_target = GL_SOURCE3_ALPHA_NV;
            opr3_target = GL_OPERAND3_ALPHA_NV;
        } else {
            opr = GL_SRC_COLOR;
            invopr = GL_ONE_MINUS_SRC_COLOR;
            src3_target = GL_SOURCE3_RGB_NV;
            opr3_target = GL_OPERAND3_RGB_NV;
        }
        switch (op)
        {
            case WINED3D_TOP_DISABLE: /* Only for alpha */
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_REPLACE");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, GL_PREVIOUS_EXT);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, GL_SRC_ALPHA);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src2_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, opr");
                break;
 
            case WINED3D_TOP_SELECT_ARG1: /* = a1 * 1 + 0 * 0 */
            case WINED3D_TOP_SELECT_ARG2: /* = a2 * 1 + 0 * 0 */
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
                if (op == WINED3D_TOP_SELECT_ARG1)
                {
                    gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                    checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                    gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                    checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                }
                else
                {
                    gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src2);
                    checkGLcall("GL_TEXTURE_ENV, src0_target, src2");
                    gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr2);
                    checkGLcall("GL_TEXTURE_ENV, opr0_target, opr2");
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src2_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, opr");
                break;
 
            case WINED3D_TOP_MODULATE:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD"); /* Add = a0*a1 + a2*a3 */
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
            case WINED3D_TOP_MODULATE_2X:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD"); /* Add = a0*a1 + a2*a3 */
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 2);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 2");
                break;
            case WINED3D_TOP_MODULATE_4X:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD"); /* Add = a0*a1 + a2*a3 */
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 4);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 4");
                break;
 
            case WINED3D_TOP_ADD:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
 
            case WINED3D_TOP_ADD_SIGNED:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD_SIGNED);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD_SIGNED");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
 
            case WINED3D_TOP_ADD_SIGNED_2X:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD_SIGNED);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD_SIGNED");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 2);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 2");
                break;
 
            case WINED3D_TOP_ADD_SMOOTH:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src3_target, src1");
                switch (opr1) {
                    case GL_SRC_COLOR: opr = GL_ONE_MINUS_SRC_COLOR; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_SRC_COLOR; break;
                    case GL_SRC_ALPHA: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_ALPHA: opr = GL_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
 
            case WINED3D_TOP_BLEND_DIFFUSE_ALPHA:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_PRIMARY_COLOR);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_PRIMARY_COLOR");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_PRIMARY_COLOR);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_PRIMARY_COLOR");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, GL_ONE_MINUS_SRC_ALPHA);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, GL_ONE_MINUS_SRC_ALPHA");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
            case WINED3D_TOP_BLEND_TEXTURE_ALPHA:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_TEXTURE);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_TEXTURE");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_TEXTURE);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_TEXTURE");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, GL_ONE_MINUS_SRC_ALPHA);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, GL_ONE_MINUS_SRC_ALPHA");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
            case WINED3D_TOP_BLEND_FACTOR_ALPHA:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_CONSTANT);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_CONSTANT");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_CONSTANT);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_CONSTANT");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, GL_ONE_MINUS_SRC_ALPHA);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, GL_ONE_MINUS_SRC_ALPHA");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
            case WINED3D_TOP_BLEND_TEXTURE_ALPHA_PM:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_TEXTURE);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_TEXTURE");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, GL_ONE_MINUS_SRC_ALPHA);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, GL_ONE_MINUS_SRC_ALPHA");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
            case WINED3D_TOP_MODULATE_ALPHA_ADD_COLOR:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");                 /* Add = a0*a1 + a2*a3 */
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);  /*  a0 = src1/opr1     */
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");                   /*  a1 = 1 (see docs)  */
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);  /*  a2 = arg2          */
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");                   /*  a3 = src1 alpha    */
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src3_target, src1");
                switch (opr) {
                    case GL_SRC_COLOR: opr = GL_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
            case WINED3D_TOP_MODULATE_COLOR_ADD_ALPHA:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src1");
                switch (opr1) {
                    case GL_SRC_COLOR: opr = GL_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
            case WINED3D_TOP_MODULATE_INVALPHA_ADD_COLOR:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src3_target, src1");
                switch (opr1) {
                    case GL_SRC_COLOR: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_SRC_ALPHA; break;
                    case GL_SRC_ALPHA: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_ALPHA: opr = GL_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
            case WINED3D_TOP_MODULATE_INVCOLOR_ADD_ALPHA:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                switch (opr1) {
                    case GL_SRC_COLOR: opr = GL_ONE_MINUS_SRC_COLOR; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_SRC_COLOR; break;
                    case GL_SRC_ALPHA: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_ALPHA: opr = GL_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src1");
                switch (opr1) {
                    case GL_SRC_COLOR: opr = GL_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src3_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
            case WINED3D_TOP_MULTIPLY_ADD:
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src3);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr3);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, GL_ZERO);
                checkGLcall("GL_TEXTURE_ENV, src1_target, GL_ZERO");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, invopr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, invopr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src3_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src3_target, src3");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr3_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr3_target, opr3");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
                break;
 
            case WINED3D_TOP_BUMPENVMAP:
            case WINED3D_TOP_BUMPENVMAP_LUMINANCE:
                FIXME("Implement bump environment mapping in GL_NV_texture_env_combine4 path\n");
                Handled = FALSE;
                break;
 
            default:
                Handled = FALSE;
        }
        if (Handled)
        {
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE4_NV);
            checkGLcall("GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE4_NV");
 
            return;
        }
    } /* GL_NV_texture_env_combine4 */
 
    Handled = TRUE; /* Again, assume handled */
    switch (op) {
        case WINED3D_TOP_DISABLE: /* Only for alpha */
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_REPLACE);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_REPLACE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, GL_PREVIOUS_EXT);
            checkGLcall("GL_TEXTURE_ENV, src0_target, GL_PREVIOUS_EXT");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, GL_SRC_ALPHA);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, GL_SRC_ALPHA");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_SELECT_ARG1:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_REPLACE);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_REPLACE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_SELECT_ARG2:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_REPLACE);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_REPLACE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_MODULATE:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_MODULATE);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_MODULATE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_MODULATE_2X:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_MODULATE);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_MODULATE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 2);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 2");
            break;
        case WINED3D_TOP_MODULATE_4X:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_MODULATE);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_MODULATE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 4);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 4");
            break;
        case WINED3D_TOP_ADD:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_ADD_SIGNED:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD_SIGNED);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD_SIGNED");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_ADD_SIGNED_2X:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_ADD_SIGNED);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_ADD_SIGNED");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 2);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 2");
            break;
        case WINED3D_TOP_SUBTRACT:
            if (gl_info->supported[ARB_TEXTURE_ENV_COMBINE])
            {
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_SUBTRACT);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_SUBTRACT");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            } else {
                FIXME("This version of opengl does not support GL_SUBTRACT\n");
            }
            break;
 
        case WINED3D_TOP_BLEND_DIFFUSE_ALPHA:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_INTERPOLATE);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_INTERPOLATE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, GL_PRIMARY_COLOR);
            checkGLcall("GL_TEXTURE_ENV, src2_target, GL_PRIMARY_COLOR");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, GL_SRC_ALPHA);
            checkGLcall("GL_TEXTURE_ENV, opr2_target, GL_SRC_ALPHA");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_BLEND_TEXTURE_ALPHA:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_INTERPOLATE);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_INTERPOLATE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, GL_TEXTURE);
            checkGLcall("GL_TEXTURE_ENV, src2_target, GL_TEXTURE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, GL_SRC_ALPHA);
            checkGLcall("GL_TEXTURE_ENV, opr2_target, GL_SRC_ALPHA");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_BLEND_FACTOR_ALPHA:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_INTERPOLATE);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_INTERPOLATE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, GL_CONSTANT);
            checkGLcall("GL_TEXTURE_ENV, src2_target, GL_CONSTANT");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, GL_SRC_ALPHA);
            checkGLcall("GL_TEXTURE_ENV, opr2_target, GL_SRC_ALPHA");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_BLEND_CURRENT_ALPHA:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_INTERPOLATE);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_INTERPOLATE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, GL_PREVIOUS);
            checkGLcall("GL_TEXTURE_ENV, src2_target, GL_PREVIOUS");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, GL_SRC_ALPHA);
            checkGLcall("GL_TEXTURE_ENV, opr2_target, GL_SRC_ALPHA");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_DOTPRODUCT3:
            if (gl_info->supported[ARB_TEXTURE_ENV_DOT3])
            {
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_DOT3_RGBA_ARB);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_DOT3_RGBA_ARB");
            }
            else if (gl_info->supported[EXT_TEXTURE_ENV_DOT3])
            {
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_DOT3_RGBA_EXT);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_DOT3_RGBA_EXT");
            } else {
                FIXME("This version of opengl does not support GL_DOT3\n");
            }
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_LERP:
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_INTERPOLATE);
            checkGLcall("GL_TEXTURE_ENV, comb_target, GL_INTERPOLATE");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
            checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
            checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src2);
            checkGLcall("GL_TEXTURE_ENV, src1_target, src2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr2);
            checkGLcall("GL_TEXTURE_ENV, opr1_target, opr2");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src3);
            checkGLcall("GL_TEXTURE_ENV, src2_target, src3");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr3);
            checkGLcall("GL_TEXTURE_ENV, opr2_target, opr3");
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
            checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            break;
        case WINED3D_TOP_ADD_SMOOTH:
            if (gl_info->supported[ATI_TEXTURE_ENV_COMBINE3])
            {
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                switch (opr1) {
                    case GL_SRC_COLOR: opr = GL_ONE_MINUS_SRC_COLOR; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_SRC_COLOR; break;
                    case GL_SRC_ALPHA: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_ALPHA: opr = GL_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src1_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            } else
                Handled = FALSE;
            break;
        case WINED3D_TOP_BLEND_TEXTURE_ALPHA_PM:
            if (gl_info->supported[ATI_TEXTURE_ENV_COMBINE3])
            {
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, GL_TEXTURE);
                checkGLcall("GL_TEXTURE_ENV, src0_target, GL_TEXTURE");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, GL_ONE_MINUS_SRC_ALPHA);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, GL_ONE_MINUS_SRC_APHA");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src1_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            } else
                Handled = FALSE;
            break;
        case WINED3D_TOP_MODULATE_ALPHA_ADD_COLOR:
            if (gl_info->supported[ATI_TEXTURE_ENV_COMBINE3])
            {
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                switch (opr1) {
                    case GL_SRC_COLOR: opr = GL_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                    case GL_SRC_ALPHA: opr = GL_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_ALPHA: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src1_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            } else
                Handled = FALSE;
            break;
        case WINED3D_TOP_MODULATE_COLOR_ADD_ALPHA:
            if (gl_info->supported[ATI_TEXTURE_ENV_COMBINE3])
            {
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src1_target, src1");
                switch (opr1) {
                    case GL_SRC_COLOR: opr = GL_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                    case GL_SRC_ALPHA: opr = GL_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_ALPHA: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            } else
                Handled = FALSE;
            break;
        case WINED3D_TOP_MODULATE_INVALPHA_ADD_COLOR:
            if (gl_info->supported[ATI_TEXTURE_ENV_COMBINE3])
            {
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                switch (opr1) {
                    case GL_SRC_COLOR: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_SRC_ALPHA; break;
                    case GL_SRC_ALPHA: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_ALPHA: opr = GL_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src1_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            } else
                Handled = FALSE;
            break;
        case WINED3D_TOP_MODULATE_INVCOLOR_ADD_ALPHA:
            if (gl_info->supported[ATI_TEXTURE_ENV_COMBINE3])
            {
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                switch (opr1) {
                    case GL_SRC_COLOR: opr = GL_ONE_MINUS_SRC_COLOR; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_SRC_COLOR; break;
                    case GL_SRC_ALPHA: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_ALPHA: opr = GL_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src1_target, src1");
                switch (opr1) {
                    case GL_SRC_COLOR: opr = GL_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_COLOR: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                    case GL_SRC_ALPHA: opr = GL_SRC_ALPHA; break;
                    case GL_ONE_MINUS_SRC_ALPHA: opr = GL_ONE_MINUS_SRC_ALPHA; break;
                }
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, opr");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            } else
                Handled = FALSE;
            break;
        case WINED3D_TOP_MULTIPLY_ADD:
            if (gl_info->supported[ATI_TEXTURE_ENV_COMBINE3])
            {
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI);
                checkGLcall("GL_TEXTURE_ENV, comb_target, GL_MODULATE_ADD_ATI");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src0_target, src1);
                checkGLcall("GL_TEXTURE_ENV, src0_target, src1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr0_target, opr1);
                checkGLcall("GL_TEXTURE_ENV, opr0_target, opr1");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src1_target, src3);
                checkGLcall("GL_TEXTURE_ENV, src1_target, src3");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr1_target, opr3);
                checkGLcall("GL_TEXTURE_ENV, opr1_target, opr3");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, src2_target, src2);
                checkGLcall("GL_TEXTURE_ENV, src2_target, src2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, opr2_target, opr2);
                checkGLcall("GL_TEXTURE_ENV, opr2_target, opr2");
                gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, scal_target, 1);
                checkGLcall("GL_TEXTURE_ENV, scal_target, 1");
            } else
                Handled = FALSE;
            break;
        case WINED3D_TOP_BUMPENVMAP_LUMINANCE:
        case WINED3D_TOP_BUMPENVMAP:
            if (gl_info->supported[NV_TEXTURE_SHADER2])
            {
                /* Technically texture shader support without register combiners is possible, but not expected to occur
                 * on real world cards, so for now a fixme should be enough
                 */
                FIXME("Implement bump mapping with GL_NV_texture_shader in non register combiner path\n");
            }
            Handled = FALSE;
            break;
 
        default:
            Handled = FALSE;
    }
 
    if (Handled) {
        BOOL  combineOK = TRUE;
        if (gl_info->supported[NV_TEXTURE_ENV_COMBINE4])
        {
            DWORD op2;
 
            if (isAlpha)
                op2 = state->texture_states[Stage][WINED3D_TSS_COLOR_OP];
            else
                op2 = state->texture_states[Stage][WINED3D_TSS_ALPHA_OP];
 
            /* Note: If COMBINE4 in effect can't go back to combine! */
            switch (op2)
            {
                case WINED3D_TOP_ADD_SMOOTH:
                case WINED3D_TOP_BLEND_TEXTURE_ALPHA_PM:
                case WINED3D_TOP_MODULATE_ALPHA_ADD_COLOR:
                case WINED3D_TOP_MODULATE_COLOR_ADD_ALPHA:
                case WINED3D_TOP_MODULATE_INVALPHA_ADD_COLOR:
                case WINED3D_TOP_MODULATE_INVCOLOR_ADD_ALPHA:
                case WINED3D_TOP_MULTIPLY_ADD:
                    /* Ignore those implemented in both cases */
                    switch (op)
                    {
                        case WINED3D_TOP_SELECT_ARG1:
                        case WINED3D_TOP_SELECT_ARG2:
                            combineOK = FALSE;
                            Handled   = FALSE;
                            break;
                        default:
                            FIXME("Can't use COMBINE4 and COMBINE together, thisop=%s, otherop=%s, isAlpha(%d)\n", debug_d3dtop(op), debug_d3dtop(op2), isAlpha);
                            return;
                    }
            }
        }
 
        if (combineOK)
        {
            gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
            checkGLcall("GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE");
 
            return;
        }
    }
 
    /* After all the extensions, if still unhandled, report fixme */
    FIXME("Unhandled texture operation %s\n", debug_d3dtop(op));
}
 
 
static void tex_colorop(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    DWORD stage = (state_id - STATE_TEXTURESTAGE(0, 0)) / (WINED3D_HIGHEST_TEXTURE_STATE + 1);
    BOOL tex_used = context->fixed_function_usage_map & (1u << stage);
    DWORD mapped_stage = context->tex_unit_map[stage];
    const struct wined3d_gl_info *gl_info = context->gl_info;
 
    TRACE("Setting color op for stage %d\n", stage);
 
    /* Using a pixel shader? Don't care for anything here, the shader applying does it */
    if (use_ps(state)) return;
 
    if (stage != mapped_stage) WARN("Using non 1:1 mapping: %d -> %d!\n", stage, mapped_stage);
 
    if (mapped_stage != WINED3D_UNMAPPED_STAGE)
    {
        if (tex_used && mapped_stage >= gl_info->limits.textures)
        {
            FIXME("Attempt to enable unsupported stage!\n");
            return;
        }
        context_active_texture(context, gl_info, mapped_stage);
    }
 
    if (stage >= context->lowest_disabled_stage)
    {
        TRACE("Stage disabled\n");
        if (mapped_stage != WINED3D_UNMAPPED_STAGE)
        {
            /* Disable everything here */
            gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_2D);
            checkGLcall("glDisable(GL_TEXTURE_2D)");
            gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_3D);
            checkGLcall("glDisable(GL_TEXTURE_3D)");
            if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
            {
                gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_CUBE_MAP_ARB);
                checkGLcall("glDisable(GL_TEXTURE_CUBE_MAP_ARB)");
            }
            if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
            {
                gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_RECTANGLE_ARB);
                checkGLcall("glDisable(GL_TEXTURE_RECTANGLE_ARB)");
            }
        }
        /* All done */
        return;
    }
 
    /* The sampler will also activate the correct texture dimensions, so no
     * need to do it here if the sampler for this stage is dirty. */
    if (!isStateDirty(context, STATE_SAMPLER(stage)) && tex_used)
        texture_activate_dimensions(state->textures[stage], gl_info);
 
    set_tex_op(gl_info, state, FALSE, stage,
            state->texture_states[stage][WINED3D_TSS_COLOR_OP],
            state->texture_states[stage][WINED3D_TSS_COLOR_ARG1],
            state->texture_states[stage][WINED3D_TSS_COLOR_ARG2],
            state->texture_states[stage][WINED3D_TSS_COLOR_ARG0]);
}
 
void tex_alphaop(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    DWORD stage = (state_id - STATE_TEXTURESTAGE(0, 0)) / (WINED3D_HIGHEST_TEXTURE_STATE + 1);
    BOOL tex_used = context->fixed_function_usage_map & (1u << stage);
    DWORD mapped_stage = context->tex_unit_map[stage];
    const struct wined3d_gl_info *gl_info = context->gl_info;
    DWORD op, arg1, arg2, arg0;
 
    TRACE("Setting alpha op for stage %d\n", stage);
    /* Do not care for enabled / disabled stages, just assign the settings. colorop disables / enables required stuff */
    if (mapped_stage != WINED3D_UNMAPPED_STAGE)
    {
        if (tex_used && mapped_stage >= gl_info->limits.textures)
        {
            FIXME("Attempt to enable unsupported stage!\n");
            return;
        }
        context_active_texture(context, gl_info, mapped_stage);
    }
 
    op = state->texture_states[stage][WINED3D_TSS_ALPHA_OP];
    arg1 = state->texture_states[stage][WINED3D_TSS_ALPHA_ARG1];
    arg2 = state->texture_states[stage][WINED3D_TSS_ALPHA_ARG2];
    arg0 = state->texture_states[stage][WINED3D_TSS_ALPHA_ARG0];
 
    if (state->render_states[WINED3D_RS_COLORKEYENABLE] && !stage && state->textures[0])
    {
        struct wined3d_texture *texture = state->textures[0];
        GLenum texture_dimensions = texture->target;
 
        if (texture_dimensions == GL_TEXTURE_2D || texture_dimensions == GL_TEXTURE_RECTANGLE_ARB)
        {
            if (texture->async.color_key_flags & WINED3D_CKEY_SRC_BLT && !texture->resource.format->alpha_size)
            {
                /* Color keying needs to pass alpha values from the texture through to have the alpha test work
                 * properly. On the other hand applications can still use texture combiners apparently. This code
                 * takes care that apps cannot remove the texture's alpha channel entirely.
                 *
                 * The fixup is required for Prince of Persia 3D(prison bars), while Moto racer 2 requires
                 * D3DTOP_MODULATE to work on color keyed surfaces. Aliens vs Predator 1 uses color keyed textures
                 * and alpha component of diffuse color to draw things like translucent text and perform other
                 * blending effects.
                 *
                 * Aliens vs Predator 1 relies on diffuse alpha having an effect, so it cannot be ignored. To
                 * provide the behavior expected by the game, while emulating the colorkey, diffuse alpha must be
                 * modulated with texture alpha. OTOH, Moto racer 2 at some points sets alphaop/alphaarg to
                 * SELECTARG/CURRENT, yet puts garbage in diffuse alpha (zeroes). This works on native, because the
                 * game disables alpha test and alpha blending. Alpha test is overwritten by wine's for purposes of
                 * color-keying though, so this will lead to missing geometry if texture alpha is modulated (pixels
                 * fail alpha test). To get around this, ALPHABLENDENABLE state is checked: if the app enables alpha
                 * blending, it can be expected to provide meaningful values in diffuse alpha, so it should be
                 * modulated with texture alpha; otherwise, selecting diffuse alpha is ignored in favour of texture
                 * alpha.
                 *
                 * What to do with multitexturing? So far no app has been found that uses color keying with
                 * multitexturing */
                if (op == WINED3D_TOP_DISABLE)
                {
                    arg1 = WINED3DTA_TEXTURE;
                    op = WINED3D_TOP_SELECT_ARG1;
                }
                else if (op == WINED3D_TOP_SELECT_ARG1 && arg1 != WINED3DTA_TEXTURE)
                {
                    if (state->render_states[WINED3D_RS_ALPHABLENDENABLE])
                    {
                        arg2 = WINED3DTA_TEXTURE;
                        op = WINED3D_TOP_MODULATE;
                    }
                    else arg1 = WINED3DTA_TEXTURE;
                }
                else if (op == WINED3D_TOP_SELECT_ARG2 && arg2 != WINED3DTA_TEXTURE)
                {
                    if (state->render_states[WINED3D_RS_ALPHABLENDENABLE])
                    {
                        arg1 = WINED3DTA_TEXTURE;
                        op = WINED3D_TOP_MODULATE;
                    }
                    else arg2 = WINED3DTA_TEXTURE;
                }
            }
        }
    }
 
    /* tex_alphaop is shared between the ffp and nvrc because the difference only comes down to
     * this if block here, and the other code(color keying, texture unit selection) are the same
     */
    TRACE("Setting alpha op for stage %d\n", stage);
    if (gl_info->supported[NV_REGISTER_COMBINERS])
    {
        set_tex_op_nvrc(gl_info, state, TRUE, stage, op, arg1, arg2, arg0,
                mapped_stage, state->texture_states[stage][WINED3D_TSS_RESULT_ARG]);
    }
    else
    {
        set_tex_op(gl_info, state, TRUE, stage, op, arg1, arg2, arg0);
    }
}
 
static void transform_texture(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    unsigned int tex = (state_id - STATE_TEXTURESTAGE(0, 0)) / (WINED3D_HIGHEST_TEXTURE_STATE + 1);
    unsigned int mapped_stage = context->tex_unit_map[tex];
    struct wined3d_matrix mat;
 
    /* Ignore this when a vertex shader is used, or if the streams aren't sorted out yet */
    if (use_vs(state) || isStateDirty(context, STATE_VDECL))
    {
        TRACE("Using a vertex shader, or stream sources not sorted out yet, skipping\n");
        return;
    }
 
    if (mapped_stage == WINED3D_UNMAPPED_STAGE) return;
    if (mapped_stage >= gl_info->limits.textures) return;
 
    context_active_texture(context, gl_info, mapped_stage);
    gl_info->gl_ops.gl.p_glMatrixMode(GL_TEXTURE);
    checkGLcall("glMatrixMode(GL_TEXTURE)");
 
    get_texture_matrix(context, state, mapped_stage, &mat);
 
    gl_info->gl_ops.gl.p_glLoadMatrixf(&mat._11);
    checkGLcall("glLoadMatrixf");
}
 
static void unload_tex_coords(const struct wined3d_gl_info *gl_info)
{
    unsigned int texture_idx;
 
    for (texture_idx = 0; texture_idx < gl_info->limits.texture_coords; ++texture_idx)
    {
        GL_EXTCALL(glClientActiveTextureARB(GL_TEXTURE0_ARB + texture_idx));
        gl_info->gl_ops.gl.p_glDisableClientState(GL_TEXTURE_COORD_ARRAY);
    }
}
 
static void load_tex_coords(const struct wined3d_context *context, const struct wined3d_stream_info *si,
        GLuint *curVBO, const struct wined3d_state *state)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    unsigned int mapped_stage = 0;
    unsigned int textureNo;
 
    for (textureNo = 0; textureNo < context->d3d_info->limits.ffp_blend_stages; ++textureNo)
    {
        int coordIdx = state->texture_states[textureNo][WINED3D_TSS_TEXCOORD_INDEX];
 
        mapped_stage = context->tex_unit_map[textureNo];
        if (mapped_stage == WINED3D_UNMAPPED_STAGE) continue;
 
        if (mapped_stage >= gl_info->limits.texture_coords)
        {
            FIXME("Attempted to load unsupported texture coordinate %u\n", mapped_stage);
            continue;
        }
 
        if (coordIdx < MAX_TEXTURES && (si->use_map & (1u << (WINED3D_FFP_TEXCOORD0 + coordIdx))))
        {
            const struct wined3d_stream_info_element *e = &si->elements[WINED3D_FFP_TEXCOORD0 + coordIdx];
 
            TRACE("Setting up texture %u, idx %d, coordindx %u, data {%#x:%p}.\n",
                    textureNo, mapped_stage, coordIdx, e->data.buffer_object, e->data.addr);
 
            if (*curVBO != e->data.buffer_object)
            {
                GL_EXTCALL(glBindBuffer(GL_ARRAY_BUFFER, e->data.buffer_object));
                checkGLcall("glBindBuffer");
                *curVBO = e->data.buffer_object;
            }
 
            GL_EXTCALL(glClientActiveTextureARB(GL_TEXTURE0_ARB + mapped_stage));
            checkGLcall("glClientActiveTextureARB");
 
            /* The coords to supply depend completely on the fvf / vertex shader */
            gl_info->gl_ops.gl.p_glTexCoordPointer(e->format->gl_vtx_format, e->format->gl_vtx_type, e->stride,
                    e->data.addr + state->load_base_vertex_index * e->stride);
            gl_info->gl_ops.gl.p_glEnableClientState(GL_TEXTURE_COORD_ARRAY);
        }
        else
        {
            GL_EXTCALL(glMultiTexCoord4fARB(GL_TEXTURE0_ARB + mapped_stage, 0, 0, 0, 1));
        }
    }
    if (gl_info->supported[NV_REGISTER_COMBINERS])
    {
        /* The number of the mapped stages increases monotonically, so it's fine to use the last used one. */
        for (textureNo = mapped_stage + 1; textureNo < gl_info->limits.textures; ++textureNo)
        {
            GL_EXTCALL(glMultiTexCoord4fARB(GL_TEXTURE0_ARB + textureNo, 0, 0, 0, 1));
        }
    }
 
    checkGLcall("loadTexCoords");
}
 
static void tex_coordindex(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    DWORD stage = (state_id - STATE_TEXTURESTAGE(0, 0)) / (WINED3D_HIGHEST_TEXTURE_STATE + 1);
    static const GLfloat s_plane[] = { 1.0f, 0.0f, 0.0f, 0.0f };
    static const GLfloat t_plane[] = { 0.0f, 1.0f, 0.0f, 0.0f };
    static const GLfloat r_plane[] = { 0.0f, 0.0f, 1.0f, 0.0f };
    static const GLfloat q_plane[] = { 0.0f, 0.0f, 0.0f, 1.0f };
    const struct wined3d_gl_info *gl_info = context->gl_info;
    DWORD mapped_stage = context->tex_unit_map[stage];
 
    if (mapped_stage == WINED3D_UNMAPPED_STAGE)
    {
        TRACE("No texture unit mapped to stage %d. Skipping texture coordinates.\n", stage);
        return;
    }
 
    if (mapped_stage >= min(gl_info->limits.samplers[WINED3D_SHADER_TYPE_PIXEL], MAX_FRAGMENT_SAMPLERS))
    {
        WARN("stage %u not mapped to a valid texture unit (%u)\n", stage, mapped_stage);
        return;
    }
    context_active_texture(context, gl_info, mapped_stage);
 
    /* Values 0-7 are indexes into the FVF tex coords - See comments in DrawPrimitive
     *
     * FIXME: When using generated texture coordinates, the index value is used to specify the wrapping mode.
     * eg. SetTextureStageState( 0, WINED3D_TSS_TEXCOORDINDEX, WINED3D_TSS_TCI_CAMERASPACEPOSITION | 1 );
     * means use the vertex position (camera-space) as the input texture coordinates
     * for this texture stage, and the wrap mode set in the WINED3D_RS_WRAP1 render
     * state. We do not (yet) support the WINED3DRENDERSTATE_WRAPx values, nor tie them up
     * to the TEXCOORDINDEX value
     */
    switch (state->texture_states[stage][WINED3D_TSS_TEXCOORD_INDEX] & 0xffff0000)
    {
        case WINED3DTSS_TCI_PASSTHRU:
            /* Use the specified texture coordinates contained within the
             * vertex format. This value resolves to zero. */
            gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_GEN_S);
            gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_GEN_T);
            gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_GEN_R);
            gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_GEN_Q);
            checkGLcall("WINED3DTSS_TCI_PASSTHRU - Disable texgen.");
            break;
 
        case WINED3DTSS_TCI_CAMERASPACEPOSITION:
            /* CameraSpacePosition means use the vertex position, transformed to camera space,
             * as the input texture coordinates for this stage's texture transformation. This
             * equates roughly to EYE_LINEAR */
 
            gl_info->gl_ops.gl.p_glMatrixMode(GL_MODELVIEW);
            gl_info->gl_ops.gl.p_glPushMatrix();
            gl_info->gl_ops.gl.p_glLoadIdentity();
            gl_info->gl_ops.gl.p_glTexGenfv(GL_S, GL_EYE_PLANE, s_plane);
            gl_info->gl_ops.gl.p_glTexGenfv(GL_T, GL_EYE_PLANE, t_plane);
            gl_info->gl_ops.gl.p_glTexGenfv(GL_R, GL_EYE_PLANE, r_plane);
            gl_info->gl_ops.gl.p_glTexGenfv(GL_Q, GL_EYE_PLANE, q_plane);
            gl_info->gl_ops.gl.p_glPopMatrix();
            checkGLcall("WINED3DTSS_TCI_CAMERASPACEPOSITION - Set eye plane.");
 
            gl_info->gl_ops.gl.p_glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
            gl_info->gl_ops.gl.p_glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
            gl_info->gl_ops.gl.p_glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
            checkGLcall("WINED3DTSS_TCI_CAMERASPACEPOSITION - Set texgen mode.");
 
            gl_info->gl_ops.gl.p_glEnable(GL_TEXTURE_GEN_S);
            gl_info->gl_ops.gl.p_glEnable(GL_TEXTURE_GEN_T);
            gl_info->gl_ops.gl.p_glEnable(GL_TEXTURE_GEN_R);
            checkGLcall("WINED3DTSS_TCI_CAMERASPACEPOSITION - Enable texgen.");
 
            break;
 
        case WINED3DTSS_TCI_CAMERASPACENORMAL:
            /* Note that NV_TEXGEN_REFLECTION support is implied when
             * ARB_TEXTURE_CUBE_MAP is supported */
            if (!gl_info->supported[NV_TEXGEN_REFLECTION])
            {
                FIXME("WINED3DTSS_TCI_CAMERASPACENORMAL not supported.\n");
                break;
            }
 
            gl_info->gl_ops.gl.p_glMatrixMode(GL_MODELVIEW);
            gl_info->gl_ops.gl.p_glPushMatrix();
            gl_info->gl_ops.gl.p_glLoadIdentity();
            gl_info->gl_ops.gl.p_glTexGenfv(GL_S, GL_EYE_PLANE, s_plane);
            gl_info->gl_ops.gl.p_glTexGenfv(GL_T, GL_EYE_PLANE, t_plane);
            gl_info->gl_ops.gl.p_glTexGenfv(GL_R, GL_EYE_PLANE, r_plane);
            gl_info->gl_ops.gl.p_glTexGenfv(GL_Q, GL_EYE_PLANE, q_plane);
            gl_info->gl_ops.gl.p_glPopMatrix();
            checkGLcall("WINED3DTSS_TCI_CAMERASPACENORMAL - Set eye plane.");
 
            gl_info->gl_ops.gl.p_glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_NV);
            gl_info->gl_ops.gl.p_glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_NV);
            gl_info->gl_ops.gl.p_glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_NV);
            checkGLcall("WINED3DTSS_TCI_CAMERASPACENORMAL - Set texgen mode.");
 
            gl_info->gl_ops.gl.p_glEnable(GL_TEXTURE_GEN_S);
            gl_info->gl_ops.gl.p_glEnable(GL_TEXTURE_GEN_T);
            gl_info->gl_ops.gl.p_glEnable(GL_TEXTURE_GEN_R);
            checkGLcall("WINED3DTSS_TCI_CAMERASPACENORMAL - Enable texgen.");
 
            break;
 
        case WINED3DTSS_TCI_CAMERASPACEREFLECTIONVECTOR:
            /* Note that NV_TEXGEN_REFLECTION support is implied when
             * ARB_TEXTURE_CUBE_MAP is supported */
            if (!gl_info->supported[NV_TEXGEN_REFLECTION])
            {
                FIXME("WINED3DTSS_TCI_CAMERASPACEREFLECTIONVECTOR not supported.\n");
                break;
            }
 
            gl_info->gl_ops.gl.p_glMatrixMode(GL_MODELVIEW);
            gl_info->gl_ops.gl.p_glPushMatrix();
            gl_info->gl_ops.gl.p_glLoadIdentity();
            gl_info->gl_ops.gl.p_glTexGenfv(GL_S, GL_EYE_PLANE, s_plane);
            gl_info->gl_ops.gl.p_glTexGenfv(GL_T, GL_EYE_PLANE, t_plane);
            gl_info->gl_ops.gl.p_glTexGenfv(GL_R, GL_EYE_PLANE, r_plane);
            gl_info->gl_ops.gl.p_glTexGenfv(GL_Q, GL_EYE_PLANE, q_plane);
            gl_info->gl_ops.gl.p_glPopMatrix();
            checkGLcall("WINED3DTSS_TCI_CAMERASPACEREFLECTIONVECTOR - Set eye plane.");
 
            gl_info->gl_ops.gl.p_glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_NV);
            gl_info->gl_ops.gl.p_glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_NV);
            gl_info->gl_ops.gl.p_glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_NV);
            checkGLcall("WINED3DTSS_TCI_CAMERASPACEREFLECTIONVECTOR - Set texgen mode.");
 
            gl_info->gl_ops.gl.p_glEnable(GL_TEXTURE_GEN_S);
            gl_info->gl_ops.gl.p_glEnable(GL_TEXTURE_GEN_T);
            gl_info->gl_ops.gl.p_glEnable(GL_TEXTURE_GEN_R);
            checkGLcall("WINED3DTSS_TCI_CAMERASPACEREFLECTIONVECTOR - Enable texgen.");
 
            break;
 
        case WINED3DTSS_TCI_SPHEREMAP:
            gl_info->gl_ops.gl.p_glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
            gl_info->gl_ops.gl.p_glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
            checkGLcall("WINED3DTSS_TCI_SPHEREMAP - Set texgen mode.");
 
            gl_info->gl_ops.gl.p_glEnable(GL_TEXTURE_GEN_S);
            gl_info->gl_ops.gl.p_glEnable(GL_TEXTURE_GEN_T);
            gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_GEN_R);
            checkGLcall("WINED3DTSS_TCI_SPHEREMAP - Enable texgen.");
 
            break;
 
        default:
            FIXME("Unhandled WINED3D_TSS_TEXCOORD_INDEX %#x.\n",
                    state->texture_states[stage][WINED3D_TSS_TEXCOORD_INDEX]);
            gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_GEN_S);
            gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_GEN_T);
            gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_GEN_R);
            gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_GEN_Q);
            checkGLcall("Disable texgen.");
 
            break;
    }
 
    /* Update the texture matrix. */
    if (!isStateDirty(context, STATE_TRANSFORM(WINED3D_TS_TEXTURE0 + stage)))
        transform_texture(context, state, STATE_TEXTURESTAGE(stage, WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS));
 
    if (!isStateDirty(context, STATE_VDECL) && context->namedArraysLoaded)
    {
        /* Reload the arrays if we are using fixed function arrays to reflect the selected coord input
         * source. Call loadTexCoords directly because there is no need to reparse the vertex declaration
         * and do all the things linked to it
         * TODO: Tidy that up to reload only the arrays of the changed unit
         */
        GLuint curVBO = gl_info->supported[ARB_VERTEX_BUFFER_OBJECT] ? ~0U : 0;
 
        unload_tex_coords(gl_info);
        load_tex_coords(context, &context->stream_info, &curVBO, state);
    }
}
 
static void sampler_texmatrix(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
{
    const DWORD sampler = state_id - STATE_SAMPLER(0);
    const struct wined3d_texture *texture = state->textures[sampler];
 
    TRACE("context %p, state %p, state_id %#x.\n", context, state, state_id);
 
    if (!texture)
        return;
 
    /* The fixed function np2 texture emulation uses the texture matrix to fix up the coordinates
     * wined3d_texture_apply_state_changes() multiplies the set matrix with a fixup matrix. Before the
     * scaling is reapplied or removed, the texture matrix has to be reapplied.
     */
    if (sampler < MAX_TEXTURES)
    {
        const BOOL tex_is_pow2 = !(texture->flags & WINED3D_TEXTURE_POW2_MAT_IDENT);
 
        if (tex_is_pow2 || (context->lastWasPow2Texture & (1u << sampler)))
        {
            if (tex_is_pow2)
                context->lastWasPow2Texture |= 1u << sampler;
            else
                context->lastWasPow2Texture &= ~(1u << sampler);
 
            transform_texture(context, state, STATE_TEXTURESTAGE(sampler, WINED3D_TSS_TEXTURE_TRANSFORM_FLAGS));
        }
    }
}
 
static enum wined3d_texture_address wined3d_texture_address_mode(const struct wined3d_texture *texture,
        enum wined3d_texture_address t)
{
    if (t < WINED3D_TADDRESS_WRAP || t > WINED3D_TADDRESS_MIRROR_ONCE)
    {
        FIXME("Unrecognized or unsupported texture address mode %#x.\n", t);
        return WINED3D_TADDRESS_WRAP;
    }
 
    /* Cubemaps are always set to clamp, regardless of the sampler state. */
    if (texture->target == GL_TEXTURE_CUBE_MAP_ARB || ((texture->flags & WINED3D_TEXTURE_COND_NP2)
            && t == WINED3D_TADDRESS_WRAP))
        return WINED3D_TADDRESS_CLAMP;
 
    return t;
}
 
static void wined3d_sampler_desc_from_sampler_states(struct wined3d_sampler_desc *desc,
        const struct wined3d_context *context, const DWORD *sampler_states, const struct wined3d_texture *texture)
{
    union
    {
        float f;
        DWORD d;
    } lod_bias;