ReactOS  0.4.14-dev-52-g6116262
polygon.c
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1 /* $Id: polygon.c,v 1.7 1997/07/24 01:23:44 brianp Exp $ */
2 
3 /*
4  * Mesa 3-D graphics library
5  * Version: 2.4
6  * Copyright (C) 1995-1997 Brian Paul
7  *
8  * This library is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Library General Public
10  * License as published by the Free Software Foundation; either
11  * version 2 of the License, or (at your option) any later version.
12  *
13  * This library is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Library General Public License for more details.
17  *
18  * You should have received a copy of the GNU Library General Public
19  * License along with this library; if not, write to the Free
20  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  */
22 
23 
24 /*
25  * $Log: polygon.c,v $
26  * Revision 1.7 1997/07/24 01:23:44 brianp
27  * changed precompiled header symbol from PCH to PC_HEADER
28  *
29  * Revision 1.6 1997/06/03 01:58:27 brianp
30  * fixed unpacking bug in gl_PolygonStipple()
31  *
32  * Revision 1.5 1997/05/28 03:26:02 brianp
33  * added precompiled header (PCH) support
34  *
35  * Revision 1.4 1997/04/12 16:54:05 brianp
36  * new NEW_POLYGON state flag
37  *
38  * Revision 1.3 1996/10/11 03:44:58 brianp
39  * removed Polygon.OffsetBias
40  *
41  * Revision 1.2 1996/09/26 22:48:40 brianp
42  * set NEW_RASTER_OPS flag in gl_PolygonStipple() if stippling enabled
43  *
44  * Revision 1.1 1996/09/13 01:38:16 brianp
45  * Initial revision
46  *
47  */
48 
49 
50 #ifdef PC_HEADER
51 #include "all.h"
52 #else
53 #include <assert.h>
54 #include <stdlib.h>
55 #include <string.h>
56 #include "context.h"
57 #include "macros.h"
58 #include "polygon.h"
59 #include "types.h"
60 #endif
61 
62 
63 
65 {
67  gl_error( ctx, GL_INVALID_ENUM, "glCullFace" );
68  return;
69  }
70  if (INSIDE_BEGIN_END(ctx)) {
71  gl_error( ctx, GL_INVALID_OPERATION, "glCullFace" );
72  return;
73  }
74  ctx->Polygon.CullFaceMode = mode;
75  ctx->NewState |= NEW_POLYGON;
76 }
77 
78 
79 
81 {
82  if (INSIDE_BEGIN_END(ctx)) {
83  gl_error( ctx, GL_INVALID_OPERATION, "glFrontFace" );
84  return;
85  }
86  if (mode!=GL_CW && mode!=GL_CCW) {
87  gl_error( ctx, GL_INVALID_ENUM, "glFrontFace" );
88  return;
89  }
90  ctx->Polygon.FrontFace = mode;
91 }
92 
93 
94 
96 {
97  if (INSIDE_BEGIN_END(ctx)) {
98  gl_error( ctx, GL_INVALID_OPERATION, "glPolygonMode" );
99  return;
100  }
102  gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(face)" );
103  return;
104  }
105  else if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) {
106  gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" );
107  return;
108  }
109 
110  if (face==GL_FRONT || face==GL_FRONT_AND_BACK) {
111  ctx->Polygon.FrontMode = mode;
112  }
113  if (face==GL_BACK || face==GL_FRONT_AND_BACK) {
114  ctx->Polygon.BackMode = mode;
115  }
116 
117  /* Compute a handy "shortcut" value: */
118  if (ctx->Polygon.FrontMode!=GL_FILL || ctx->Polygon.BackMode!=GL_FILL) {
119  ctx->Polygon.Unfilled = GL_TRUE;
120  }
121  else {
122  ctx->Polygon.Unfilled = GL_FALSE;
123  }
124 
125  ctx->NewState |= NEW_POLYGON;
126 }
127 
128 
129 
131 {
132  GLint i;
133 
134  if (INSIDE_BEGIN_END(ctx)) {
135  gl_error( ctx, GL_INVALID_OPERATION, "glPolygonStipple" );
136  return;
137  }
138 
139  /* TODO: bit twiddling, unpacking */
140  for (i=0;i<32;i++) {
141  ctx->PolygonStipple[i] = (mask[i*4+0] << 24)
142  | (mask[i*4+1] << 16)
143  | (mask[i*4+2] << 8)
144  | (mask[i*4+3]);
145  }
146 
147  if (ctx->Polygon.StippleFlag) {
148  ctx->NewState |= NEW_RASTER_OPS;
149  }
150 }
151 
152 
153 
155 {
156  /* TODO */
157 }
158 
159 
160 
163 {
164  if (INSIDE_BEGIN_END(ctx)) {
165  gl_error( ctx, GL_INVALID_OPERATION, "glPolygonOffset" );
166  return;
167  }
168  ctx->Polygon.OffsetFactor = factor;
169  ctx->Polygon.OffsetUnits = units;
170 }
171 
#define GL_BACK
Definition: gl.h:271
GLuint NewState
Definition: types.h:1355
unsigned char GLubyte
Definition: gl.h:157
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint factor
Definition: glfuncs.h:178
#define GL_FALSE
Definition: gl.h:173
struct gl_polygon_attrib Polygon
Definition: types.h:1330
void gl_PolygonStipple(GLcontext *ctx, const GLubyte *mask)
Definition: polygon.c:130
#define INSIDE_BEGIN_END(CTX)
Definition: macros.h:135
#define GL_FRONT_AND_BACK
Definition: gl.h:336
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLenum GLint GLuint mask
Definition: glext.h:6028
#define GL_FRONT
Definition: gl.h:270
#define GL_LINE
Definition: gl.h:266
void gl_CullFace(GLcontext *ctx, GLenum mode)
Definition: polygon.c:64
#define GL_CCW
Definition: gl.h:269
#define NEW_POLYGON
Definition: types.h:1235
#define GL_POINT
Definition: gl.h:265
#define GL_INVALID_OPERATION
Definition: gl.h:696
void gl_PolygonMode(GLcontext *ctx, GLenum face, GLenum mode)
Definition: polygon.c:95
#define NEW_RASTER_OPS
Definition: types.h:1233
void gl_PolygonOffset(GLcontext *ctx, GLfloat factor, GLfloat units)
Definition: polygon.c:161
unsigned int GLenum
Definition: gl.h:150
GLenum mode
Definition: glext.h:6217
void gl_error(GLcontext *ctx, GLenum error, const char *s)
Definition: context.c:1421
GLuint PolygonStipple[32]
Definition: types.h:1331
#define GL_FILL
Definition: gl.h:267
#define GL_TRUE
Definition: gl.h:174
#define GL_INVALID_ENUM
Definition: gl.h:694
#define GL_CW
Definition: gl.h:268
float GLfloat
Definition: gl.h:161
void gl_GetPolygonStipple(GLcontext *ctx, GLubyte *mask)
Definition: polygon.c:154
int GLint
Definition: gl.h:156
void gl_FrontFace(GLcontext *ctx, GLenum mode)
Definition: polygon.c:80
GLfloat units
Definition: glext.h:11727
GLenum GLuint GLint GLenum face
Definition: glext.h:7025