2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 #include "extensions.h"
30 #include "simple_list.h"
34 #define F(x) (int)(unsigned long)&(((struct gl_extensions *)0)->x)
40 * Note: The GL_MESAX_* extensions are placeholders for future ARB extensions.
46 } default_extensions
[] = {
47 { OFF
, "GL_ARB_depth_texture", F(ARB_depth_texture
) },
48 { OFF
, "GL_ARB_draw_buffers", F(ARB_draw_buffers
) },
49 { OFF
, "GL_ARB_fragment_program", F(ARB_fragment_program
) },
50 { OFF
, "GL_ARB_fragment_shader", F(ARB_fragment_shader
) },
51 { OFF
, "GL_MESAX_half_float_pixel", F(ARB_half_float_pixel
) },
52 { OFF
, "GL_ARB_imaging", F(ARB_imaging
) },
53 { OFF
, "GL_ARB_multisample", F(ARB_multisample
) },
54 { OFF
, "GL_ARB_multitexture", F(ARB_multitexture
) },
55 { OFF
, "GL_ARB_occlusion_query", F(ARB_occlusion_query
) },
56 { OFF
, "GL_ARB_pixel_buffer_object", F(EXT_pixel_buffer_object
) },
57 { OFF
, "GL_ARB_point_parameters", F(EXT_point_parameters
) },
58 { OFF
, "GL_ARB_point_sprite", F(ARB_point_sprite
) },
59 { OFF
, "GL_ARB_shader_objects", F(ARB_shader_objects
) },
60 { OFF
, "GL_ARB_shadow", F(ARB_shadow
) },
61 { OFF
, "GL_ARB_shadow_ambient", F(SGIX_shadow_ambient
) },
62 { OFF
, "GL_ARB_texture_border_clamp", F(ARB_texture_border_clamp
) },
63 { OFF
, "GL_ARB_texture_compression", F(ARB_texture_compression
) },
64 { OFF
, "GL_ARB_texture_cube_map", F(ARB_texture_cube_map
) },
65 { OFF
, "GL_ARB_texture_env_add", F(EXT_texture_env_add
) },
66 { OFF
, "GL_ARB_texture_env_combine", F(ARB_texture_env_combine
) },
67 { OFF
, "GL_ARB_texture_env_crossbar", F(ARB_texture_env_crossbar
) },
68 { OFF
, "GL_ARB_texture_env_dot3", F(ARB_texture_env_dot3
) },
69 { OFF
, "GL_MESAX_texture_float", F(ARB_texture_float
) },
70 { OFF
, "GL_ARB_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat
)},
71 { OFF
, "GL_ARB_texture_non_power_of_two", F(ARB_texture_non_power_of_two
)},
72 { OFF
, "GL_ARB_texture_rectangle", F(NV_texture_rectangle
) },
73 { ON
, "GL_ARB_transpose_matrix", F(ARB_transpose_matrix
) },
74 { OFF
, "GL_ARB_vertex_buffer_object", F(ARB_vertex_buffer_object
) },
75 { OFF
, "GL_ARB_vertex_program", F(ARB_vertex_program
) },
76 { OFF
, "GL_ARB_vertex_shader", F(ARB_vertex_shader
) },
77 { ON
, "GL_ARB_window_pos", F(ARB_window_pos
) },
78 { ON
, "GL_EXT_abgr", F(EXT_abgr
) },
79 { ON
, "GL_EXT_bgra", F(EXT_bgra
) },
80 { OFF
, "GL_EXT_blend_color", F(EXT_blend_color
) },
81 { OFF
, "GL_EXT_blend_equation_separate", F(EXT_blend_equation_separate
) },
82 { OFF
, "GL_EXT_blend_func_separate", F(EXT_blend_func_separate
) },
83 { OFF
, "GL_EXT_blend_logic_op", F(EXT_blend_logic_op
) },
84 { OFF
, "GL_EXT_blend_minmax", F(EXT_blend_minmax
) },
85 { OFF
, "GL_EXT_blend_subtract", F(EXT_blend_subtract
) },
86 { ON
, "GL_EXT_clip_volume_hint", F(EXT_clip_volume_hint
) },
87 { OFF
, "GL_EXT_cull_vertex", F(EXT_cull_vertex
) },
88 { ON
, "GL_EXT_compiled_vertex_array", F(EXT_compiled_vertex_array
) },
89 { OFF
, "GL_EXT_convolution", F(EXT_convolution
) },
90 { ON
, "GL_EXT_copy_texture", F(EXT_copy_texture
) },
91 { OFF
, "GL_EXT_depth_bounds_test", F(EXT_depth_bounds_test
) },
92 { ON
, "GL_EXT_draw_range_elements", F(EXT_draw_range_elements
) },
93 { OFF
, "GL_EXT_fog_coord", F(EXT_fog_coord
) },
94 { OFF
, "GL_EXT_histogram", F(EXT_histogram
) },
95 { OFF
, "GL_EXT_multi_draw_arrays", F(EXT_multi_draw_arrays
) },
96 { ON
, "GL_EXT_packed_pixels", F(EXT_packed_pixels
) },
97 { OFF
, "GL_EXT_paletted_texture", F(EXT_paletted_texture
) },
98 { OFF
, "GL_EXT_pixel_buffer_object", F(EXT_pixel_buffer_object
) },
99 { OFF
, "GL_EXT_point_parameters", F(EXT_point_parameters
) },
100 { ON
, "GL_EXT_polygon_offset", F(EXT_polygon_offset
) },
101 { ON
, "GL_EXT_rescale_normal", F(EXT_rescale_normal
) },
102 { OFF
, "GL_EXT_secondary_color", F(EXT_secondary_color
) },
103 { ON
, "GL_EXT_separate_specular_color", F(EXT_separate_specular_color
) },
104 { OFF
, "GL_EXT_shadow_funcs", F(EXT_shadow_funcs
) },
105 { OFF
, "GL_EXT_shared_texture_palette", F(EXT_shared_texture_palette
) },
106 { OFF
, "GL_EXT_stencil_two_side", F(EXT_stencil_two_side
) },
107 { OFF
, "GL_EXT_stencil_wrap", F(EXT_stencil_wrap
) },
108 { ON
, "GL_EXT_subtexture", F(EXT_subtexture
) },
109 { ON
, "GL_EXT_texture", F(EXT_texture
) },
110 { ON
, "GL_EXT_texture3D", F(EXT_texture3D
) },
111 { OFF
, "GL_EXT_texture_compression_s3tc", F(EXT_texture_compression_s3tc
) },
112 { ON
, "GL_EXT_texture_edge_clamp", F(SGIS_texture_edge_clamp
) },
113 { OFF
, "GL_EXT_texture_env_add", F(EXT_texture_env_add
) },
114 { OFF
, "GL_EXT_texture_env_combine", F(EXT_texture_env_combine
) },
115 { OFF
, "GL_EXT_texture_env_dot3", F(EXT_texture_env_dot3
) },
116 { OFF
, "GL_EXT_texture_filter_anisotropic", F(EXT_texture_filter_anisotropic
) },
117 { OFF
, "GL_EXT_texture_lod_bias", F(EXT_texture_lod_bias
) },
118 { OFF
, "GL_EXT_texture_mirror_clamp", F(EXT_texture_mirror_clamp
) },
119 { ON
, "GL_EXT_texture_object", F(EXT_texture_object
) },
120 { OFF
, "GL_EXT_texture_rectangle", F(NV_texture_rectangle
) },
121 { ON
, "GL_EXT_vertex_array", F(EXT_vertex_array
) },
122 { OFF
, "GL_EXT_vertex_array_set", F(EXT_vertex_array_set
) },
123 { OFF
, "GL_3DFX_texture_compression_FXT1", F(TDFX_texture_compression_FXT1
) },
124 { OFF
, "GL_APPLE_client_storage", F(APPLE_client_storage
) },
125 { ON
, "GL_APPLE_packed_pixels", F(APPLE_packed_pixels
) },
126 { OFF
, "GL_ATI_blend_equation_separate", F(EXT_blend_equation_separate
) },
127 { OFF
, "GL_ATI_texture_env_combine3", F(ATI_texture_env_combine3
)},
128 { OFF
, "GL_ATI_texture_mirror_once", F(ATI_texture_mirror_once
)},
129 { OFF
, "GL_ATI_fragment_shader", F(ATI_fragment_shader
)},
130 { OFF
, "GL_HP_occlusion_test", F(HP_occlusion_test
) },
131 { OFF
, "GL_IBM_multimode_draw_arrays", F(IBM_multimode_draw_arrays
) },
132 { ON
, "GL_IBM_rasterpos_clip", F(IBM_rasterpos_clip
) },
133 { OFF
, "GL_IBM_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat
)},
134 { OFF
, "GL_INGR_blend_func_separate", F(EXT_blend_func_separate
) },
135 { OFF
, "GL_MESA_pack_invert", F(MESA_pack_invert
) },
136 { OFF
, "GL_MESA_packed_depth_stencil", F(MESA_packed_depth_stencil
) },
137 { OFF
, "GL_MESA_program_debug", F(MESA_program_debug
) },
138 { OFF
, "GL_MESA_resize_buffers", F(MESA_resize_buffers
) },
139 { OFF
, "GL_MESA_ycbcr_texture", F(MESA_ycbcr_texture
) },
140 { ON
, "GL_MESA_window_pos", F(ARB_window_pos
) },
141 { OFF
, "GL_NV_blend_square", F(NV_blend_square
) },
142 { OFF
, "GL_NV_fragment_program", F(NV_fragment_program
) },
143 { ON
, "GL_NV_light_max_exponent", F(NV_light_max_exponent
) },
144 { OFF
, "GL_NV_point_sprite", F(NV_point_sprite
) },
145 { OFF
, "GL_NV_texture_rectangle", F(NV_texture_rectangle
) },
146 { ON
, "GL_NV_texgen_reflection", F(NV_texgen_reflection
) },
147 { OFF
, "GL_NV_vertex_program", F(NV_vertex_program
) },
148 { OFF
, "GL_NV_vertex_program1_1", F(NV_vertex_program1_1
) },
149 { ON
, "GL_OES_read_format", F(OES_read_format
) },
150 { OFF
, "GL_SGI_color_matrix", F(SGI_color_matrix
) },
151 { OFF
, "GL_SGI_color_table", F(SGI_color_table
) },
152 { OFF
, "GL_SGI_texture_color_table", F(SGI_texture_color_table
) },
153 { OFF
, "GL_SGIS_generate_mipmap", F(SGIS_generate_mipmap
) },
154 { OFF
, "GL_SGIS_pixel_texture", F(SGIS_pixel_texture
) },
155 { OFF
, "GL_SGIS_texture_border_clamp", F(ARB_texture_border_clamp
) },
156 { ON
, "GL_SGIS_texture_edge_clamp", F(SGIS_texture_edge_clamp
) },
157 { ON
, "GL_SGIS_texture_lod", F(SGIS_texture_lod
) },
158 { OFF
, "GL_SGIX_depth_texture", F(SGIX_depth_texture
) },
159 { OFF
, "GL_SGIX_pixel_texture", F(SGIX_pixel_texture
) },
160 { OFF
, "GL_SGIX_shadow", F(SGIX_shadow
) },
161 { OFF
, "GL_SGIX_shadow_ambient", F(SGIX_shadow_ambient
) },
162 { OFF
, "GL_SUN_multi_draw_arrays", F(EXT_multi_draw_arrays
) },
163 { OFF
, "GL_S3_s3tc", F(S3_s3tc
) },
169 * Enable all extensions suitable for a software-only renderer.
170 * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc.
173 _mesa_enable_sw_extensions(GLcontext
*ctx
)
175 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
176 ctx
->Extensions
.ARB_draw_buffers
= GL_TRUE
;
177 #if FEATURE_ARB_fragment_program
178 ctx
->Extensions
.ARB_fragment_program
= GL_TRUE
;
180 /*ctx->Extensions.ARB_half_float_pixel = GL_TRUE;*/
181 ctx
->Extensions
.ARB_imaging
= GL_TRUE
;
182 ctx
->Extensions
.ARB_multitexture
= GL_TRUE
;
183 #if FEATURE_ARB_occlusion_query
184 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
186 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
187 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
188 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
;
189 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
190 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
191 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
192 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
193 /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/
194 ctx
->Extensions
.ARB_texture_mirrored_repeat
= GL_TRUE
;
195 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
196 #if FEATURE_ARB_vertex_program
197 ctx
->Extensions
.ARB_vertex_program
= GL_TRUE
;
199 #if FEATURE_ARB_vertex_buffer_object
200 ctx
->Extensions
.ARB_vertex_buffer_object
= GL_TRUE
;
202 #if FEATURE_ARB_shader_objects
203 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
204 #if FEATURE_ARB_fragment_shader
205 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
207 #if FEATURE_ARB_vertex_shader
208 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
211 #if FEATURE_ATI_fragment_shader
212 ctx
->Extensions
.ATI_fragment_shader
= GL_TRUE
;
214 ctx
->Extensions
.ATI_texture_env_combine3
= GL_TRUE
;
215 ctx
->Extensions
.ATI_texture_mirror_once
= GL_TRUE
;
216 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
217 ctx
->Extensions
.EXT_blend_equation_separate
= GL_TRUE
;
218 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
219 ctx
->Extensions
.EXT_blend_logic_op
= GL_TRUE
;
220 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
221 ctx
->Extensions
.EXT_blend_subtract
= GL_TRUE
;
222 ctx
->Extensions
.EXT_convolution
= GL_TRUE
;
223 ctx
->Extensions
.EXT_depth_bounds_test
= GL_TRUE
;
224 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
225 ctx
->Extensions
.EXT_histogram
= GL_TRUE
;
226 ctx
->Extensions
.EXT_multi_draw_arrays
= GL_TRUE
;
227 ctx
->Extensions
.EXT_paletted_texture
= GL_TRUE
;
228 #if FEATURE_EXT_pixel_buffer_object
229 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
231 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
232 ctx
->Extensions
.EXT_shadow_funcs
= GL_TRUE
;
233 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
234 ctx
->Extensions
.EXT_shared_texture_palette
= GL_TRUE
;
235 ctx
->Extensions
.EXT_stencil_wrap
= GL_TRUE
;
236 ctx
->Extensions
.EXT_stencil_two_side
= GL_TRUE
;
237 ctx
->Extensions
.EXT_texture_env_add
= GL_TRUE
;
238 ctx
->Extensions
.EXT_texture_env_combine
= GL_TRUE
;
239 ctx
->Extensions
.EXT_texture_env_dot3
= GL_TRUE
;
240 ctx
->Extensions
.EXT_texture_mirror_clamp
= GL_TRUE
;
241 ctx
->Extensions
.EXT_texture_lod_bias
= GL_TRUE
;
242 ctx
->Extensions
.HP_occlusion_test
= GL_TRUE
;
243 ctx
->Extensions
.IBM_multimode_draw_arrays
= GL_TRUE
;
244 ctx
->Extensions
.MESA_pack_invert
= GL_TRUE
;
245 #if FEATURE_MESA_program_debug
246 ctx
->Extensions
.MESA_program_debug
= GL_TRUE
;
248 ctx
->Extensions
.MESA_resize_buffers
= GL_TRUE
;
249 ctx
->Extensions
.MESA_ycbcr_texture
= GL_TRUE
;
250 ctx
->Extensions
.NV_blend_square
= GL_TRUE
;
251 /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/
252 ctx
->Extensions
.NV_point_sprite
= GL_TRUE
;
253 ctx
->Extensions
.NV_texture_rectangle
= GL_TRUE
;
254 /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/
255 #if FEATURE_NV_vertex_program
256 ctx
->Extensions
.NV_vertex_program
= GL_TRUE
;
257 ctx
->Extensions
.NV_vertex_program1_1
= GL_TRUE
;
259 #if FEATURE_NV_fragment_program
260 ctx
->Extensions
.NV_fragment_program
= GL_TRUE
;
262 ctx
->Extensions
.SGI_color_matrix
= GL_TRUE
;
263 ctx
->Extensions
.SGI_color_table
= GL_TRUE
;
264 ctx
->Extensions
.SGI_texture_color_table
= GL_TRUE
;
265 ctx
->Extensions
.SGIS_generate_mipmap
= GL_TRUE
;
266 ctx
->Extensions
.SGIS_pixel_texture
= GL_TRUE
;
267 ctx
->Extensions
.SGIS_texture_edge_clamp
= GL_TRUE
;
268 ctx
->Extensions
.SGIX_depth_texture
= GL_TRUE
;
269 ctx
->Extensions
.SGIX_pixel_texture
= GL_TRUE
;
270 ctx
->Extensions
.SGIX_shadow
= GL_TRUE
;
271 ctx
->Extensions
.SGIX_shadow_ambient
= GL_TRUE
;
276 * Enable GL_ARB_imaging and all the EXT extensions that are subsets of it.
279 _mesa_enable_imaging_extensions(GLcontext
*ctx
)
281 ctx
->Extensions
.ARB_imaging
= GL_TRUE
;
282 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
283 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
284 ctx
->Extensions
.EXT_blend_subtract
= GL_TRUE
;
285 ctx
->Extensions
.EXT_convolution
= GL_TRUE
;
286 ctx
->Extensions
.EXT_histogram
= GL_TRUE
;
287 ctx
->Extensions
.SGI_color_matrix
= GL_TRUE
;
288 ctx
->Extensions
.SGI_color_table
= GL_TRUE
;
294 * Enable all OpenGL 1.3 features and extensions.
295 * A convenience function to be called by drivers.
298 _mesa_enable_1_3_extensions(GLcontext
*ctx
)
300 ctx
->Extensions
.ARB_multisample
= GL_TRUE
;
301 ctx
->Extensions
.ARB_multitexture
= GL_TRUE
;
302 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
;
303 ctx
->Extensions
.ARB_texture_compression
= GL_TRUE
;
304 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
305 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
306 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
307 ctx
->Extensions
.EXT_texture_env_add
= GL_TRUE
;
308 /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/
314 * Enable all OpenGL 1.4 features and extensions.
315 * A convenience function to be called by drivers.
318 _mesa_enable_1_4_extensions(GLcontext
*ctx
)
320 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
321 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
322 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
323 ctx
->Extensions
.ARB_texture_mirrored_repeat
= GL_TRUE
;
324 ctx
->Extensions
.ARB_window_pos
= GL_TRUE
;
325 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
326 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
327 ctx
->Extensions
.EXT_blend_logic_op
= GL_TRUE
;
328 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
329 ctx
->Extensions
.EXT_blend_subtract
= GL_TRUE
;
330 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
331 ctx
->Extensions
.EXT_multi_draw_arrays
= GL_TRUE
;
332 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
333 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
334 ctx
->Extensions
.EXT_stencil_wrap
= GL_TRUE
;
335 ctx
->Extensions
.EXT_texture_lod_bias
= GL_TRUE
;
336 ctx
->Extensions
.SGIS_generate_mipmap
= GL_TRUE
;
341 * Enable all OpenGL 1.5 features and extensions.
342 * A convenience function to be called by drivers.
345 _mesa_enable_1_5_extensions(GLcontext
*ctx
)
347 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
348 ctx
->Extensions
.ARB_vertex_buffer_object
= GL_TRUE
;
349 ctx
->Extensions
.EXT_shadow_funcs
= GL_TRUE
;
354 * Enable all OpenGL 2.0 features and extensions.
355 * A convenience function to be called by drivers.
358 _mesa_enable_2_0_extensions(GLcontext
*ctx
)
360 ctx
->Extensions
.ARB_draw_buffers
= GL_TRUE
;
361 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
362 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
363 ctx
->Extensions
.EXT_stencil_two_side
= GL_TRUE
;
364 #if FEATURE_ARB_shader_objects
365 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
366 #if FEATURE_ARB_fragment_shader
367 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
369 #if FEATURE_ARB_vertex_shader
370 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
378 * Either enable or disable the named extension.
381 set_extension( GLcontext
*ctx
, const char *name
, GLboolean state
)
383 GLboolean
*base
= (GLboolean
*) &ctx
->Extensions
;
386 if (ctx
->Extensions
.String
) {
387 /* The string was already queried - can't change it now! */
388 _mesa_problem(ctx
, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name
);
392 for (i
= 0 ; i
< Elements(default_extensions
) ; i
++) {
393 if (_mesa_strcmp(default_extensions
[i
].name
, name
) == 0) {
394 if (default_extensions
[i
].flag_offset
) {
395 GLboolean
*enabled
= base
+ default_extensions
[i
].flag_offset
;
401 _mesa_problem(ctx
, "Trying to enable unknown extension: %s", name
);
406 * Enable the named extension.
407 * Typically called by drivers.
410 _mesa_enable_extension( GLcontext
*ctx
, const char *name
)
412 set_extension(ctx
, name
, GL_TRUE
);
417 * Disable the named extension.
418 * XXX is this really needed???
421 _mesa_disable_extension( GLcontext
*ctx
, const char *name
)
423 set_extension(ctx
, name
, GL_FALSE
);
428 * Test if the named extension is enabled in this context.
431 _mesa_extension_is_enabled( GLcontext
*ctx
, const char *name
)
433 const GLboolean
*base
= (const GLboolean
*) &ctx
->Extensions
;
436 for (i
= 0 ; i
< Elements(default_extensions
) ; i
++) {
437 if (_mesa_strcmp(default_extensions
[i
].name
, name
) == 0) {
438 if (!default_extensions
[i
].flag_offset
)
440 return *(base
+ default_extensions
[i
].flag_offset
);
448 * Run through the default_extensions array above and set the
449 * ctx->Extensions.ARB/EXT_* flags accordingly.
450 * To be called during context initialization.
453 _mesa_init_extensions( GLcontext
*ctx
)
455 GLboolean
*base
= (GLboolean
*) &ctx
->Extensions
;
458 for (i
= 0 ; i
< Elements(default_extensions
) ; i
++) {
459 if (default_extensions
[i
].enabled
&&
460 default_extensions
[i
].flag_offset
) {
461 *(base
+ default_extensions
[i
].flag_offset
) = GL_TRUE
;
468 * Construct the GL_EXTENSIONS string. Called the first time that
469 * glGetString(GL_EXTENSIONS) is called.
472 _mesa_make_extension_string( GLcontext
*ctx
)
474 const GLboolean
*base
= (const GLboolean
*) &ctx
->Extensions
;
475 GLuint extStrLen
= 0;
479 /* first, compute length of the extension string */
480 for (i
= 0 ; i
< Elements(default_extensions
) ; i
++) {
481 if (!default_extensions
[i
].flag_offset
||
482 *(base
+ default_extensions
[i
].flag_offset
)) {
483 extStrLen
+= _mesa_strlen(default_extensions
[i
].name
) + 1;
486 s
= (GLubyte
*) _mesa_malloc(extStrLen
);
488 /* second, build the extension string */
490 for (i
= 0 ; i
< Elements(default_extensions
) ; i
++) {
491 if (!default_extensions
[i
].flag_offset
||
492 *(base
+ default_extensions
[i
].flag_offset
)) {
493 GLuint len
= _mesa_strlen(default_extensions
[i
].name
);
494 _mesa_memcpy(s
+ extStrLen
, default_extensions
[i
].name
, len
);
496 s
[extStrLen
] = (GLubyte
) ' ';
500 ASSERT(extStrLen
> 0);
502 s
[extStrLen
- 1] = 0;