dglglobals.c

Go to the documentation of this file.

/****************************************************************************
*
*                        Mesa 3-D graphics library
*                        Direct3D Driver Interface
*
*  ========================================================================
*
*   Copyright (C) 1991-2004 SciTech Software, Inc. All rights reserved.
*
*   Permission is hereby granted, free of charge, to any person obtaining a
*   copy of this software and associated documentation files (the "Software"),
*   to deal in the Software without restriction, including without limitation
*   the rights to use, copy, modify, merge, publish, distribute, sublicense,
*   and/or sell copies of the Software, and to permit persons to whom the
*   Software is furnished to do so, subject to the following conditions:
*
*   The above copyright notice and this permission notice shall be included
*   in all copies or substantial portions of the Software.
*
*   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
*   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
*   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
*   SCITECH SOFTWARE INC BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
*   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
*   OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*   SOFTWARE.
*
*  ======================================================================
*
* Language:     ANSI C
* Environment:  Windows 9x (Win32)
*
* Description:  Global variables.
*
****************************************************************************/

#include "dglglobals.h"

// =======================================================================
// Global Variables
// =======================================================================

char szCopyright[]  = "Copyright (c) 1998 SciTech Software, Inc.";
char szDllName[]    = "Scitech GLDirect";
char szErrorTitle[] = "GLDirect Error";

DGL_globals glb;

// Shared result variable
HRESULT hResult;

// ***********************************************************************

// Patch function for missing function in Mesa
int finite(
    double x)
{
    return _finite(x);
};

// ***********************************************************************

void dglInitGlobals()
{
    // Zero all fields just in case
    memset(&glb, 0, sizeof(glb));

    // Set the global defaults
    glb.bPrimary            = FALSE;        // Not the primary device
    glb.bHardware           = FALSE;        // Not a hardware device
//  glb.bFullscreen         = FALSE;        // Not running fullscreen
    glb.bSquareTextures     = FALSE;        // Device does not need sq
    glb.bPAL8               = FALSE;        // Device cannot do 8bit
    glb.dwMemoryType        = DDSCAPS_SYSTEMMEMORY;
    glb.dwRendering         = DGL_RENDER_D3D;

    glb.bWaitForRetrace     = TRUE;         // Sync to vertical retrace
    glb.bFullscreenBlit     = FALSE;

    glb.nPixelFormatCount   = 0;
    glb.lpPF                = NULL;         // Pixel format list
#ifndef _USE_GLD3_WGL
    glb.nZBufferPFCount     = 0;
    glb.lpZBufferPF         = NULL;
    glb.nDisplayModeCount   = 0;
    glb.lpDisplayModes      = NULL;
    glb.nTextureFormatCount = 0;
    glb.lpTextureFormat     = NULL;
#endif // _USE_GLD3_WGL

    glb.wMaxSimultaneousTextures = 1;

    // Enable support for multitexture, if available.
    glb.bMultitexture       = TRUE;

    // Enable support for mipmapping
    glb.bUseMipmaps         = TRUE;

    // Alpha emulation via chroma key
    glb.bEmulateAlphaTest   = FALSE;

    // Use Mesa pipeline always (for compatibility)
    glb.bForceMesaPipeline  = FALSE;

    // Init support for multiple GLRCs
    glb.bDirectDraw         = FALSE;
    glb.bDirectDrawPrimary  = FALSE;
    glb.bDirect3D           = FALSE;
    glb.bDirect3DDevice     = FALSE;
    glb.bDirectDrawStereo   = FALSE;
    glb.iDirectDrawStereo   = 0;
    glb.hWndActive          = NULL;
    // Init DirectX COM interfaces for multiple GLRCs
//  glb.lpDD4               = NULL;
//  glb.lpPrimary4          = NULL;
//  glb.lpBack4             = NULL;
//  glb.lpDepth4            = NULL;
//  glb.lpGlobalPalette     = NULL;

    // Init special support options
    glb.bMessageBoxWarnings = TRUE;
    glb.bDirectDrawPersistant = FALSE;
    glb.bPersistantBuffers  = FALSE;

    // Do not assume single-precision-only FPU (for compatibility)
    glb.bFastFPU            = FALSE;

    // Allow hot-key support
    glb.bHotKeySupport      = TRUE;

    // Default to single-threaded support (for simplicity)
    glb.bMultiThreaded      = FALSE;

    // Use application-specific customizations (for end-user convenience)
    glb.bAppCustomizations  = TRUE;

#ifdef _USE_GLD3_WGL
    // Registry/ini-file settings for GLDirect 3.x
    glb.dwAdapter               = 0;    // Primary DX8 adapter
    glb.dwTnL                   = 1;    // MesaSW TnL
    glb.dwMultisample           = 0;    // Multisample Off
    glb.dwDriver                = 2;    // Direct3D HW

    // Signal a pixelformat list rebuild
    glb.bPixelformatsDirty      = TRUE;
#endif
}

// ***********************************************************************