1 /* $Id: polygon.c,v 1.1 1999/08/19 00:55:41 jtg Exp $ */
4 * Mesa 3-D graphics library
7 * Copyright (C) 1999 Brian Paul All Rights Reserved.
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
42 #include "GL/xf86glx.h"
48 void gl_CullFace( GLcontext
*ctx
, GLenum mode
)
50 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
, "glCullFace");
52 if (MESA_VERBOSE
&VERBOSE_API
)
53 fprintf(stderr
, "glCullFace %s\n", gl_lookup_enum_by_nr(mode
));
55 if (mode
!=GL_FRONT
&& mode
!=GL_BACK
&& mode
!=GL_FRONT_AND_BACK
) {
56 gl_error( ctx
, GL_INVALID_ENUM
, "glCullFace" );
60 ctx
->Polygon
.CullFaceMode
= mode
;
61 ctx
->NewState
|= NEW_POLYGON
;
63 if (ctx
->Driver
.CullFace
)
64 ctx
->Driver
.CullFace( ctx
, mode
);
69 void gl_FrontFace( GLcontext
*ctx
, GLenum mode
)
71 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
, "glFrontFace");
73 if (MESA_VERBOSE
&VERBOSE_API
)
74 fprintf(stderr
, "glFrontFace %s\n", gl_lookup_enum_by_nr(mode
));
76 if (mode
!=GL_CW
&& mode
!=GL_CCW
) {
77 gl_error( ctx
, GL_INVALID_ENUM
, "glFrontFace" );
80 ctx
->Polygon
.FrontFace
= mode
;
81 ctx
->Polygon
.FrontBit
= (mode
== GL_CW
);
83 if (ctx
->Driver
.FrontFace
)
84 ctx
->Driver
.FrontFace( ctx
, mode
);
89 void gl_PolygonMode( GLcontext
*ctx
, GLenum face
, GLenum mode
)
91 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
, "glPolygonMode");
93 if (MESA_VERBOSE
&VERBOSE_API
)
94 fprintf(stderr
, "glPolygonMode %s %s\n",
95 gl_lookup_enum_by_nr(face
),
96 gl_lookup_enum_by_nr(mode
));
98 if (face
!=GL_FRONT
&& face
!=GL_BACK
&& face
!=GL_FRONT_AND_BACK
) {
99 gl_error( ctx
, GL_INVALID_ENUM
, "glPolygonMode(face)" );
102 else if (mode
!=GL_POINT
&& mode
!=GL_LINE
&& mode
!=GL_FILL
) {
103 gl_error( ctx
, GL_INVALID_ENUM
, "glPolygonMode(mode)" );
107 if (face
==GL_FRONT
|| face
==GL_FRONT_AND_BACK
) {
108 ctx
->Polygon
.FrontMode
= mode
;
110 if (face
==GL_BACK
|| face
==GL_FRONT_AND_BACK
) {
111 ctx
->Polygon
.BackMode
= mode
;
114 /* Compute a handy "shortcut" value: */
115 ctx
->TriangleCaps
&= ~DD_TRI_UNFILLED
;
116 ctx
->Polygon
.Unfilled
= GL_FALSE
;
118 if (ctx
->Polygon
.FrontMode
!=GL_FILL
|| ctx
->Polygon
.BackMode
!=GL_FILL
) {
119 ctx
->Polygon
.Unfilled
= GL_TRUE
;
120 ctx
->TriangleCaps
|= DD_TRI_UNFILLED
;
123 ctx
->Polygon
.Unfilled
= GL_FALSE
;
126 ctx
->NewState
|= (NEW_POLYGON
| NEW_RASTER_OPS
);
128 if (ctx
->Driver
.PolygonMode
) {
129 (*ctx
->Driver
.PolygonMode
)( ctx
, face
, mode
);
136 * NOTE: stipple pattern has already been unpacked.
138 void gl_PolygonStipple( GLcontext
*ctx
, const GLuint pattern
[32] )
140 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
, "glPolygonStipple");
142 if (MESA_VERBOSE
&VERBOSE_API
)
143 fprintf(stderr
, "glPolygonStipple\n");
145 MEMCPY( ctx
->PolygonStipple
, pattern
, 32 * 4 );
147 if (ctx
->Polygon
.StippleFlag
) {
148 ctx
->NewState
|= NEW_RASTER_OPS
;
154 void gl_GetPolygonStipple( GLcontext
*ctx
, GLubyte
*dest
)
156 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
, "glPolygonOffset");
158 if (MESA_VERBOSE
&VERBOSE_API
)
159 fprintf(stderr
, "glGetPolygonStipple\n");
161 gl_pack_polygon_stipple( ctx
, ctx
->PolygonStipple
, dest
);
166 void gl_PolygonOffset( GLcontext
*ctx
,
167 GLfloat factor
, GLfloat units
)
169 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
, "glPolygonOffset");
171 if (MESA_VERBOSE
&VERBOSE_API
)
172 fprintf(stderr
, "glPolygonOffset %f %f\n", factor
, units
);
174 ctx
->Polygon
.OffsetFactor
= factor
;
175 ctx
->Polygon
.OffsetUnits
= units
;