3 * Mesa 3-D graphics library
6 * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 _mesa_Hint( GLenum target
, GLenum mode
)
38 GET_CURRENT_CONTEXT(ctx
);
39 ASSERT_OUTSIDE_BEGIN_END(ctx
);
41 if (MESA_VERBOSE
& VERBOSE_API
)
42 _mesa_debug(ctx
, "glHint %s %d\n",
43 _mesa_lookup_enum_by_nr(target
), mode
);
45 if (mode
!= GL_NICEST
&& mode
!= GL_FASTEST
&& mode
!= GL_DONT_CARE
) {
46 _mesa_error(ctx
, GL_INVALID_ENUM
, "glHint(mode)");
52 if (ctx
->Hint
.Fog
== mode
)
54 FLUSH_VERTICES(ctx
, _NEW_HINT
);
57 case GL_LINE_SMOOTH_HINT
:
58 if (ctx
->Hint
.LineSmooth
== mode
)
60 FLUSH_VERTICES(ctx
, _NEW_HINT
);
61 ctx
->Hint
.LineSmooth
= mode
;
63 case GL_PERSPECTIVE_CORRECTION_HINT
:
64 if (ctx
->Hint
.PerspectiveCorrection
== mode
)
66 FLUSH_VERTICES(ctx
, _NEW_HINT
);
67 ctx
->Hint
.PerspectiveCorrection
= mode
;
69 case GL_POINT_SMOOTH_HINT
:
70 if (ctx
->Hint
.PointSmooth
== mode
)
72 FLUSH_VERTICES(ctx
, _NEW_HINT
);
73 ctx
->Hint
.PointSmooth
= mode
;
75 case GL_POLYGON_SMOOTH_HINT
:
76 if (ctx
->Hint
.PolygonSmooth
== mode
)
78 FLUSH_VERTICES(ctx
, _NEW_HINT
);
79 ctx
->Hint
.PolygonSmooth
= mode
;
82 /* GL_EXT_clip_volume_hint */
83 case GL_CLIP_VOLUME_CLIPPING_HINT_EXT
:
84 if (ctx
->Hint
.ClipVolumeClipping
== mode
)
86 FLUSH_VERTICES(ctx
, _NEW_HINT
);
87 ctx
->Hint
.ClipVolumeClipping
= mode
;
90 /* GL_ARB_texture_compression */
91 case GL_TEXTURE_COMPRESSION_HINT_ARB
:
92 if (ctx
->Hint
.TextureCompression
== mode
)
94 FLUSH_VERTICES(ctx
, _NEW_HINT
);
95 ctx
->Hint
.TextureCompression
= mode
;
98 /* GL_SGIS_generate_mipmap */
99 case GL_GENERATE_MIPMAP_HINT_SGIS
:
100 if (!ctx
->Extensions
.SGIS_generate_mipmap
) {
101 _mesa_error(ctx
, GL_INVALID_ENUM
, "glHint(target)");
104 if (ctx
->Hint
.GenerateMipmap
== mode
)
106 FLUSH_VERTICES(ctx
, _NEW_HINT
);
107 ctx
->Hint
.GenerateMipmap
= mode
;
110 /* GL_ARB_fragment_shader */
111 case GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB
:
112 if (!ctx
->Extensions
.ARB_fragment_shader
) {
113 _mesa_error(ctx
, GL_INVALID_ENUM
, "glHint(target)");
116 if (ctx
->Hint
.FragmentShaderDerivative
== mode
)
118 FLUSH_VERTICES(ctx
, _NEW_HINT
);
119 ctx
->Hint
.FragmentShaderDerivative
= mode
;
123 _mesa_error(ctx
, GL_INVALID_ENUM
, "glHint(target)");
127 if (ctx
->Driver
.Hint
) {
128 (*ctx
->Driver
.Hint
)( ctx
, target
, mode
);
133 /**********************************************************************/
134 /***** Initialization *****/
135 /**********************************************************************/
137 void _mesa_init_hint( GLcontext
* ctx
)
140 ctx
->Hint
.PerspectiveCorrection
= GL_DONT_CARE
;
141 ctx
->Hint
.PointSmooth
= GL_DONT_CARE
;
142 ctx
->Hint
.LineSmooth
= GL_DONT_CARE
;
143 ctx
->Hint
.PolygonSmooth
= GL_DONT_CARE
;
144 ctx
->Hint
.Fog
= GL_DONT_CARE
;
145 ctx
->Hint
.ClipVolumeClipping
= GL_DONT_CARE
;
146 ctx
->Hint
.TextureCompression
= GL_DONT_CARE
;
147 ctx
->Hint
.GenerateMipmap
= GL_DONT_CARE
;
148 ctx
->Hint
.FragmentShaderDerivative
= GL_DONT_CARE
;