2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. 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.
30 #include "extensions.h"
31 #include "simple_list.h"
35 #define F(x) offsetof(struct gl_extensions, x)
41 * Note: The GL_MESAX_* extensions are placeholders for future ARB extensions.
47 } default_extensions
[] = {
48 { OFF
, "GL_ARB_copy_buffer", F(ARB_copy_buffer
) },
49 { OFF
, "GL_ARB_depth_texture", F(ARB_depth_texture
) },
50 { ON
, "GL_ARB_draw_buffers", F(ARB_draw_buffers
) },
51 { OFF
, "GL_ARB_fragment_program", F(ARB_fragment_program
) },
52 { OFF
, "GL_ARB_fragment_program_shadow", F(ARB_fragment_program_shadow
) },
53 { OFF
, "GL_ARB_fragment_shader", F(ARB_fragment_shader
) },
54 { OFF
, "GL_ARB_framebuffer_object", F(ARB_framebuffer_object
) },
55 { OFF
, "GL_ARB_half_float_pixel", F(ARB_half_float_pixel
) },
56 { OFF
, "GL_ARB_imaging", F(ARB_imaging
) },
57 { OFF
, "GL_ARB_map_buffer_range", F(ARB_map_buffer_range
) },
58 { ON
, "GL_ARB_multisample", F(ARB_multisample
) },
59 { OFF
, "GL_ARB_multitexture", F(ARB_multitexture
) },
60 { OFF
, "GL_ARB_occlusion_query", F(ARB_occlusion_query
) },
61 { OFF
, "GL_ARB_pixel_buffer_object", F(EXT_pixel_buffer_object
) },
62 { OFF
, "GL_ARB_point_parameters", F(EXT_point_parameters
) },
63 { OFF
, "GL_ARB_point_sprite", F(ARB_point_sprite
) },
64 { OFF
, "GL_ARB_shader_objects", F(ARB_shader_objects
) },
65 { OFF
, "GL_ARB_shading_language_100", F(ARB_shading_language_100
) },
66 { OFF
, "GL_ARB_shading_language_120", F(ARB_shading_language_120
) },
67 { OFF
, "GL_ARB_shadow", F(ARB_shadow
) },
68 { OFF
, "GL_ARB_shadow_ambient", F(ARB_shadow_ambient
) },
69 { OFF
, "GL_ARB_texture_border_clamp", F(ARB_texture_border_clamp
) },
70 { ON
, "GL_ARB_texture_compression", F(ARB_texture_compression
) },
71 { OFF
, "GL_ARB_texture_cube_map", F(ARB_texture_cube_map
) },
72 { OFF
, "GL_ARB_texture_env_add", F(EXT_texture_env_add
) },
73 { OFF
, "GL_ARB_texture_env_combine", F(ARB_texture_env_combine
) },
74 { OFF
, "GL_ARB_texture_env_crossbar", F(ARB_texture_env_crossbar
) },
75 { OFF
, "GL_ARB_texture_env_dot3", F(ARB_texture_env_dot3
) },
76 { OFF
, "GL_MESAX_texture_float", F(ARB_texture_float
) },
77 { OFF
, "GL_ARB_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat
)},
78 { OFF
, "GL_ARB_texture_non_power_of_two", F(ARB_texture_non_power_of_two
)},
79 { OFF
, "GL_ARB_texture_rectangle", F(NV_texture_rectangle
) },
80 { ON
, "GL_ARB_transpose_matrix", F(ARB_transpose_matrix
) },
81 { OFF
, "GL_ARB_vertex_array_object", F(ARB_vertex_array_object
) },
82 { ON
, "GL_ARB_vertex_buffer_object", F(ARB_vertex_buffer_object
) },
83 { OFF
, "GL_ARB_vertex_program", F(ARB_vertex_program
) },
84 { OFF
, "GL_ARB_vertex_shader", F(ARB_vertex_shader
) },
85 { ON
, "GL_ARB_window_pos", F(ARB_window_pos
) },
86 { ON
, "GL_EXT_abgr", F(EXT_abgr
) },
87 { ON
, "GL_EXT_bgra", F(EXT_bgra
) },
88 { OFF
, "GL_EXT_blend_color", F(EXT_blend_color
) },
89 { OFF
, "GL_EXT_blend_equation_separate", F(EXT_blend_equation_separate
) },
90 { OFF
, "GL_EXT_blend_func_separate", F(EXT_blend_func_separate
) },
91 { OFF
, "GL_EXT_blend_logic_op", F(EXT_blend_logic_op
) },
92 { OFF
, "GL_EXT_blend_minmax", F(EXT_blend_minmax
) },
93 { OFF
, "GL_EXT_blend_subtract", F(EXT_blend_subtract
) },
94 { OFF
, "GL_EXT_clip_volume_hint", F(EXT_clip_volume_hint
) },
95 { OFF
, "GL_EXT_cull_vertex", F(EXT_cull_vertex
) },
96 { ON
, "GL_EXT_compiled_vertex_array", F(EXT_compiled_vertex_array
) },
97 { OFF
, "GL_EXT_convolution", F(EXT_convolution
) },
98 { ON
, "GL_EXT_copy_texture", F(EXT_copy_texture
) },
99 { OFF
, "GL_EXT_depth_bounds_test", F(EXT_depth_bounds_test
) },
100 { ON
, "GL_EXT_draw_range_elements", F(EXT_draw_range_elements
) },
101 { OFF
, "GL_EXT_framebuffer_object", F(EXT_framebuffer_object
) },
102 { OFF
, "GL_EXT_framebuffer_blit", F(EXT_framebuffer_blit
) },
103 { OFF
, "GL_EXT_fog_coord", F(EXT_fog_coord
) },
104 { OFF
, "GL_EXT_gpu_program_parameters", F(EXT_gpu_program_parameters
) },
105 { OFF
, "GL_EXT_histogram", F(EXT_histogram
) },
106 { ON
, "GL_EXT_multi_draw_arrays", F(EXT_multi_draw_arrays
) },
107 { OFF
, "GL_EXT_packed_depth_stencil", F(EXT_packed_depth_stencil
) },
108 { ON
, "GL_EXT_packed_pixels", F(EXT_packed_pixels
) },
109 { OFF
, "GL_EXT_paletted_texture", F(EXT_paletted_texture
) },
110 { OFF
, "GL_EXT_pixel_buffer_object", F(EXT_pixel_buffer_object
) },
111 { OFF
, "GL_EXT_point_parameters", F(EXT_point_parameters
) },
112 { ON
, "GL_EXT_polygon_offset", F(EXT_polygon_offset
) },
113 { OFF
, "GL_EXT_provoking_vertex", F(EXT_provoking_vertex
) },
114 { ON
, "GL_EXT_rescale_normal", F(EXT_rescale_normal
) },
115 { OFF
, "GL_EXT_secondary_color", F(EXT_secondary_color
) },
116 { ON
, "GL_EXT_separate_specular_color", F(EXT_separate_specular_color
) },
117 { OFF
, "GL_EXT_shadow_funcs", F(EXT_shadow_funcs
) },
118 { OFF
, "GL_EXT_shared_texture_palette", F(EXT_shared_texture_palette
) },
119 { OFF
, "GL_EXT_stencil_two_side", F(EXT_stencil_two_side
) },
120 { OFF
, "GL_EXT_stencil_wrap", F(EXT_stencil_wrap
) },
121 { ON
, "GL_EXT_subtexture", F(EXT_subtexture
) },
122 { ON
, "GL_EXT_texture", F(EXT_texture
) },
123 { ON
, "GL_EXT_texture3D", F(EXT_texture3D
) },
124 { OFF
, "GL_EXT_texture_compression_s3tc", F(EXT_texture_compression_s3tc
) },
125 { ON
, "GL_EXT_texture_edge_clamp", F(SGIS_texture_edge_clamp
) },
126 { OFF
, "GL_EXT_texture_env_add", F(EXT_texture_env_add
) },
127 { OFF
, "GL_EXT_texture_env_combine", F(EXT_texture_env_combine
) },
128 { OFF
, "GL_EXT_texture_env_dot3", F(EXT_texture_env_dot3
) },
129 { OFF
, "GL_EXT_texture_filter_anisotropic", F(EXT_texture_filter_anisotropic
) },
130 { OFF
, "GL_EXT_texture_lod_bias", F(EXT_texture_lod_bias
) },
131 { OFF
, "GL_EXT_texture_mirror_clamp", F(EXT_texture_mirror_clamp
) },
132 { ON
, "GL_EXT_texture_object", F(EXT_texture_object
) },
133 { OFF
, "GL_EXT_texture_rectangle", F(NV_texture_rectangle
) },
134 { OFF
, "GL_EXT_texture_sRGB", F(EXT_texture_sRGB
) },
135 { OFF
, "GL_EXT_texture_swizzle", F(EXT_texture_swizzle
) },
136 { OFF
, "GL_EXT_timer_query", F(EXT_timer_query
) },
137 { ON
, "GL_EXT_vertex_array", F(EXT_vertex_array
) },
138 { OFF
, "GL_EXT_vertex_array_bgra", F(EXT_vertex_array_bgra
) },
139 { OFF
, "GL_EXT_vertex_array_set", F(EXT_vertex_array_set
) },
140 { OFF
, "GL_3DFX_texture_compression_FXT1", F(TDFX_texture_compression_FXT1
) },
141 { OFF
, "GL_APPLE_client_storage", F(APPLE_client_storage
) },
142 { ON
, "GL_APPLE_packed_pixels", F(APPLE_packed_pixels
) },
143 { OFF
, "GL_APPLE_vertex_array_object", F(APPLE_vertex_array_object
) },
144 { OFF
, "GL_ATI_blend_equation_separate", F(EXT_blend_equation_separate
) },
145 { OFF
, "GL_ATI_envmap_bumpmap", F(ATI_envmap_bumpmap
) },
146 { OFF
, "GL_ATI_texture_env_combine3", F(ATI_texture_env_combine3
)},
147 { OFF
, "GL_ATI_texture_mirror_once", F(ATI_texture_mirror_once
)},
148 { OFF
, "GL_ATI_fragment_shader", F(ATI_fragment_shader
)},
149 { OFF
, "GL_ATI_separate_stencil", F(ATI_separate_stencil
)},
150 { ON
, "GL_IBM_multimode_draw_arrays", F(IBM_multimode_draw_arrays
) },
151 { ON
, "GL_IBM_rasterpos_clip", F(IBM_rasterpos_clip
) },
152 { OFF
, "GL_IBM_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat
)},
153 { OFF
, "GL_INGR_blend_func_separate", F(EXT_blend_func_separate
) },
154 { OFF
, "GL_MESA_pack_invert", F(MESA_pack_invert
) },
155 { OFF
, "GL_MESA_packed_depth_stencil", F(MESA_packed_depth_stencil
) },
156 { OFF
, "GL_MESA_resize_buffers", F(MESA_resize_buffers
) },
157 { OFF
, "GL_MESA_texture_array", F(MESA_texture_array
) },
158 { OFF
, "GL_MESA_texture_signed_rgba", F(MESA_texture_signed_rgba
) },
159 { OFF
, "GL_MESA_ycbcr_texture", F(MESA_ycbcr_texture
) },
160 { ON
, "GL_MESA_window_pos", F(ARB_window_pos
) },
161 { OFF
, "GL_NV_blend_square", F(NV_blend_square
) },
162 { OFF
, "GL_NV_fragment_program", F(NV_fragment_program
) },
163 { ON
, "GL_NV_light_max_exponent", F(NV_light_max_exponent
) },
164 { OFF
, "GL_NV_point_sprite", F(NV_point_sprite
) },
165 { OFF
, "GL_NV_texture_env_combine4", F(NV_texture_env_combine4
) },
166 { OFF
, "GL_NV_texture_rectangle", F(NV_texture_rectangle
) },
167 { ON
, "GL_NV_texgen_reflection", F(NV_texgen_reflection
) },
168 { OFF
, "GL_NV_vertex_program", F(NV_vertex_program
) },
169 { OFF
, "GL_NV_vertex_program1_1", F(NV_vertex_program1_1
) },
170 { ON
, "GL_OES_read_format", F(OES_read_format
) },
171 { OFF
, "GL_SGI_color_matrix", F(SGI_color_matrix
) },
172 { OFF
, "GL_SGI_color_table", F(SGI_color_table
) },
173 { OFF
, "GL_SGI_texture_color_table", F(SGI_texture_color_table
) },
174 { OFF
, "GL_SGIS_generate_mipmap", F(SGIS_generate_mipmap
) },
175 { OFF
, "GL_SGIS_texture_border_clamp", F(ARB_texture_border_clamp
) },
176 { ON
, "GL_SGIS_texture_edge_clamp", F(SGIS_texture_edge_clamp
) },
177 { ON
, "GL_SGIS_texture_lod", F(SGIS_texture_lod
) },
178 { ON
, "GL_SUN_multi_draw_arrays", F(EXT_multi_draw_arrays
) },
179 { OFF
, "GL_S3_s3tc", F(S3_s3tc
) },
185 * Enable all extensions suitable for a software-only renderer.
186 * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc.
189 _mesa_enable_sw_extensions(GLcontext
*ctx
)
191 ctx
->Extensions
.ARB_copy_buffer
= GL_TRUE
;
192 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
193 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
194 #if FEATURE_ARB_fragment_program
195 ctx
->Extensions
.ARB_fragment_program
= GL_TRUE
;
196 ctx
->Extensions
.ARB_fragment_program_shadow
= GL_TRUE
;
198 #if FEATURE_ARB_fragment_shader
199 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
201 #if FEATURE_ARB_framebuffer_object
202 ctx
->Extensions
.ARB_framebuffer_object
= GL_TRUE
;
204 ctx
->Extensions
.ARB_half_float_pixel
= GL_TRUE
;
205 ctx
->Extensions
.ARB_imaging
= GL_TRUE
;
206 ctx
->Extensions
.ARB_map_buffer_range
= GL_TRUE
;
207 ctx
->Extensions
.ARB_multitexture
= GL_TRUE
;
208 #if FEATURE_ARB_occlusion_query
209 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
211 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
212 #if FEATURE_ARB_shader_objects
213 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
215 #if FEATURE_ARB_shading_language_100
216 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
218 #if FEATURE_ARB_shading_language_120
219 ctx
->Extensions
.ARB_shading_language_120
= GL_TRUE
;
221 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
222 ctx
->Extensions
.ARB_shadow_ambient
= GL_TRUE
;
223 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
;
224 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
225 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
226 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
227 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
228 /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/
229 ctx
->Extensions
.ARB_texture_mirrored_repeat
= GL_TRUE
;
230 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
231 ctx
->Extensions
.ARB_vertex_array_object
= GL_TRUE
;
232 #if FEATURE_ARB_vertex_program
233 ctx
->Extensions
.ARB_vertex_program
= GL_TRUE
;
235 #if FEATURE_ARB_vertex_shader
236 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
238 #if FEATURE_ARB_vertex_buffer_object
239 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
241 ctx
->Extensions
.APPLE_vertex_array_object
= GL_TRUE
;
242 ctx
->Extensions
.ATI_envmap_bumpmap
= GL_TRUE
;
243 #if FEATURE_ATI_fragment_shader
244 ctx
->Extensions
.ATI_fragment_shader
= GL_TRUE
;
246 ctx
->Extensions
.ATI_texture_env_combine3
= GL_TRUE
;
247 ctx
->Extensions
.ATI_texture_mirror_once
= GL_TRUE
;
248 ctx
->Extensions
.ATI_separate_stencil
= GL_TRUE
;
249 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
250 ctx
->Extensions
.EXT_blend_equation_separate
= GL_TRUE
;
251 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
252 ctx
->Extensions
.EXT_blend_logic_op
= GL_TRUE
;
253 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
254 ctx
->Extensions
.EXT_blend_subtract
= GL_TRUE
;
255 ctx
->Extensions
.EXT_convolution
= GL_TRUE
;
256 ctx
->Extensions
.EXT_depth_bounds_test
= GL_TRUE
;
257 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
258 #if FEATURE_EXT_framebuffer_object
259 ctx
->Extensions
.EXT_framebuffer_object
= GL_TRUE
;
261 #if FEATURE_EXT_framebuffer_blit
262 ctx
->Extensions
.EXT_framebuffer_blit
= GL_TRUE
;
264 ctx
->Extensions
.EXT_histogram
= GL_TRUE
;
265 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
266 ctx
->Extensions
.EXT_packed_depth_stencil
= GL_TRUE
;
267 ctx
->Extensions
.EXT_paletted_texture
= GL_TRUE
;
268 #if FEATURE_EXT_pixel_buffer_object
269 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
271 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
272 ctx
->Extensions
.EXT_provoking_vertex
= GL_TRUE
;
273 ctx
->Extensions
.EXT_shadow_funcs
= GL_TRUE
;
274 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
275 ctx
->Extensions
.EXT_shared_texture_palette
= GL_TRUE
;
276 ctx
->Extensions
.EXT_stencil_wrap
= GL_TRUE
;
277 ctx
->Extensions
.EXT_stencil_two_side
= GL_TRUE
;
278 ctx
->Extensions
.EXT_texture_env_add
= GL_TRUE
;
279 ctx
->Extensions
.EXT_texture_env_combine
= GL_TRUE
;
280 ctx
->Extensions
.EXT_texture_env_dot3
= GL_TRUE
;
281 ctx
->Extensions
.EXT_texture_mirror_clamp
= GL_TRUE
;
282 ctx
->Extensions
.EXT_texture_lod_bias
= GL_TRUE
;
283 #if FEATURE_EXT_texture_sRGB
284 ctx
->Extensions
.EXT_texture_sRGB
= GL_TRUE
;
286 ctx
->Extensions
.EXT_texture_swizzle
= GL_TRUE
;
287 ctx
->Extensions
.EXT_vertex_array_bgra
= GL_TRUE
;
288 /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/
289 ctx
->Extensions
.MESA_pack_invert
= GL_TRUE
;
290 ctx
->Extensions
.MESA_resize_buffers
= GL_TRUE
;
291 ctx
->Extensions
.MESA_texture_array
= GL_TRUE
;
292 ctx
->Extensions
.MESA_ycbcr_texture
= GL_TRUE
;
293 ctx
->Extensions
.NV_blend_square
= GL_TRUE
;
294 /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/
295 ctx
->Extensions
.NV_point_sprite
= GL_TRUE
;
296 ctx
->Extensions
.NV_texture_env_combine4
= GL_TRUE
;
297 ctx
->Extensions
.NV_texture_rectangle
= GL_TRUE
;
298 /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/
299 #if FEATURE_NV_vertex_program
300 ctx
->Extensions
.NV_vertex_program
= GL_TRUE
;
301 ctx
->Extensions
.NV_vertex_program1_1
= GL_TRUE
;
303 #if FEATURE_NV_fragment_program
304 ctx
->Extensions
.NV_fragment_program
= GL_TRUE
;
306 ctx
->Extensions
.SGI_color_matrix
= GL_TRUE
;
307 ctx
->Extensions
.SGI_color_table
= GL_TRUE
;
308 ctx
->Extensions
.SGI_texture_color_table
= GL_TRUE
;
309 ctx
->Extensions
.SGIS_generate_mipmap
= GL_TRUE
;
310 ctx
->Extensions
.SGIS_texture_edge_clamp
= GL_TRUE
;
311 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
312 ctx
->Extensions
.EXT_gpu_program_parameters
= GL_TRUE
;
314 #if FEATURE_texture_fxt1
315 _mesa_enable_extension(ctx
, "GL_3DFX_texture_compression_FXT1");
317 #if FEATURE_texture_s3tc
318 if (ctx
->Mesa_DXTn
) {
319 _mesa_enable_extension(ctx
, "GL_EXT_texture_compression_s3tc");
320 _mesa_enable_extension(ctx
, "GL_S3_s3tc");
327 * Enable GL_ARB_imaging and all the EXT extensions that are subsets of it.
330 _mesa_enable_imaging_extensions(GLcontext
*ctx
)
332 ctx
->Extensions
.ARB_imaging
= GL_TRUE
;
333 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
334 ctx
->Extensions
.EXT_blend_logic_op
= GL_TRUE
;
335 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
336 ctx
->Extensions
.EXT_blend_subtract
= GL_TRUE
;
337 ctx
->Extensions
.EXT_convolution
= GL_TRUE
;
338 ctx
->Extensions
.EXT_histogram
= GL_TRUE
;
339 ctx
->Extensions
.SGI_color_matrix
= GL_TRUE
;
340 ctx
->Extensions
.SGI_color_table
= GL_TRUE
;
346 * Enable all OpenGL 1.3 features and extensions.
347 * A convenience function to be called by drivers.
350 _mesa_enable_1_3_extensions(GLcontext
*ctx
)
352 /*ctx->Extensions.ARB_multisample = GL_TRUE;*/
353 ctx
->Extensions
.ARB_multitexture
= GL_TRUE
;
354 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
;
355 /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/
356 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
357 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
358 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
359 ctx
->Extensions
.EXT_texture_env_add
= GL_TRUE
;
360 /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/
366 * Enable all OpenGL 1.4 features and extensions.
367 * A convenience function to be called by drivers.
370 _mesa_enable_1_4_extensions(GLcontext
*ctx
)
372 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
373 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
374 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
375 ctx
->Extensions
.ARB_texture_mirrored_repeat
= GL_TRUE
;
376 ctx
->Extensions
.ARB_window_pos
= GL_TRUE
;
377 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
378 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
379 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
380 ctx
->Extensions
.EXT_blend_subtract
= GL_TRUE
;
381 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
382 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
383 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
384 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
385 ctx
->Extensions
.EXT_stencil_wrap
= GL_TRUE
;
386 ctx
->Extensions
.EXT_texture_lod_bias
= GL_TRUE
;
387 ctx
->Extensions
.SGIS_generate_mipmap
= GL_TRUE
;
392 * Enable all OpenGL 1.5 features and extensions.
393 * A convenience function to be called by drivers.
396 _mesa_enable_1_5_extensions(GLcontext
*ctx
)
398 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
399 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
400 ctx
->Extensions
.EXT_shadow_funcs
= GL_TRUE
;
405 * Enable all OpenGL 2.0 features and extensions.
406 * A convenience function to be called by drivers.
409 _mesa_enable_2_0_extensions(GLcontext
*ctx
)
411 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
412 #if FEATURE_ARB_fragment_shader
413 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
415 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
416 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
417 #if FEATURE_ARB_shader_objects
418 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
420 #if FEATURE_ARB_shading_language_100
421 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
423 ctx
->Extensions
.EXT_stencil_two_side
= GL_TRUE
;
424 #if FEATURE_ARB_vertex_shader
425 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
431 * Enable all OpenGL 2.1 features and extensions.
432 * A convenience function to be called by drivers.
435 _mesa_enable_2_1_extensions(GLcontext
*ctx
)
437 #if FEATURE_EXT_pixel_buffer_object
438 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
440 #if FEATURE_EXT_texture_sRGB
441 ctx
->Extensions
.EXT_texture_sRGB
= GL_TRUE
;
443 #ifdef FEATURE_ARB_shading_language_120
444 ctx
->Extensions
.ARB_shading_language_120
= GL_TRUE
;
451 * Either enable or disable the named extension.
452 * \return GL_TRUE for success, GL_FALSE if invalid extension name
455 set_extension( GLcontext
*ctx
, const char *name
, GLboolean state
)
457 GLboolean
*base
= (GLboolean
*) &ctx
->Extensions
;
460 if (ctx
->Extensions
.String
) {
461 /* The string was already queried - can't change it now! */
462 _mesa_problem(ctx
, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name
);
466 for (i
= 0 ; i
< Elements(default_extensions
) ; i
++) {
467 if (_mesa_strcmp(default_extensions
[i
].name
, name
) == 0) {
468 if (default_extensions
[i
].flag_offset
) {
469 GLboolean
*enabled
= base
+ default_extensions
[i
].flag_offset
;
480 * Enable the named extension.
481 * Typically called by drivers.
484 _mesa_enable_extension( GLcontext
*ctx
, const char *name
)
486 if (!set_extension(ctx
, name
, GL_TRUE
))
487 _mesa_problem(ctx
, "Trying to enable unknown extension: %s", name
);
492 * Disable the named extension.
493 * XXX is this really needed???
496 _mesa_disable_extension( GLcontext
*ctx
, const char *name
)
498 if (!set_extension(ctx
, name
, GL_FALSE
))
499 _mesa_problem(ctx
, "Trying to disable unknown extension: %s", name
);
504 * Test if the named extension is enabled in this context.
507 _mesa_extension_is_enabled( GLcontext
*ctx
, const char *name
)
509 const GLboolean
*base
= (const GLboolean
*) &ctx
->Extensions
;
512 for (i
= 0 ; i
< Elements(default_extensions
) ; i
++) {
513 if (_mesa_strcmp(default_extensions
[i
].name
, name
) == 0) {
514 if (!default_extensions
[i
].flag_offset
)
516 return *(base
+ default_extensions
[i
].flag_offset
);
524 * Append string 'b' onto string 'a'. Free 'a' and return new string.
527 append(const char *a
, const char *b
)
529 const GLuint aLen
= a
? _mesa_strlen(a
) : 0;
530 const GLuint bLen
= b
? _mesa_strlen(b
) : 0;
531 char *s
= _mesa_calloc(aLen
+ bLen
+ 1);
534 _mesa_memcpy(s
, a
, aLen
);
536 _mesa_memcpy(s
+ aLen
, b
, bLen
);
537 s
[aLen
+ bLen
] = '\0';
540 _mesa_free((void *) a
);
546 * Check the MESA_EXTENSION_OVERRIDE env var.
547 * For extension names that are recognized, turn them on. For extension
548 * names that are recognized and prefixed with '-', turn them off.
549 * Return a string of the unknown/leftover names.
552 get_extension_override( GLcontext
*ctx
)
554 const char *envExt
= _mesa_getenv("MESA_EXTENSION_OVERRIDE");
555 char *extraExt
= NULL
;
559 GLboolean disableExt
= GL_FALSE
;
565 if (envExt
[i
] == '\0' || envExt
[i
] == ' ') {
566 /* terminate/process 'ext' if extLen > 0 */
568 assert(extLen
< sizeof(ext
));
569 /* enable extension named by 'ext' */
571 if (!set_extension(ctx
, ext
, !disableExt
)) {
572 /* unknown extension name, append it to extraExt */
574 extraExt
= append(extraExt
, " ");
576 extraExt
= append(extraExt
, ext
);
579 disableExt
= GL_FALSE
;
581 if (envExt
[i
] == '\0')
584 else if (envExt
[i
] == '-') {
585 disableExt
= GL_TRUE
;
588 /* accumulate this non-space character */
589 ext
[extLen
++] = envExt
[i
];
598 * Run through the default_extensions array above and set the
599 * ctx->Extensions.ARB/EXT_* flags accordingly.
600 * To be called during context initialization.
603 _mesa_init_extensions( GLcontext
*ctx
)
605 GLboolean
*base
= (GLboolean
*) &ctx
->Extensions
;
608 for (i
= 0 ; i
< Elements(default_extensions
) ; i
++) {
609 if (default_extensions
[i
].enabled
&&
610 default_extensions
[i
].flag_offset
) {
611 *(base
+ default_extensions
[i
].flag_offset
) = GL_TRUE
;
618 * Construct the GL_EXTENSIONS string. Called the first time that
619 * glGetString(GL_EXTENSIONS) is called.
622 _mesa_make_extension_string( GLcontext
*ctx
)
624 const GLboolean
*base
= (const GLboolean
*) &ctx
->Extensions
;
625 const char *extraExt
= get_extension_override(ctx
);
626 GLuint extStrLen
= 0;
630 /* first, compute length of the extension string */
631 for (i
= 0 ; i
< Elements(default_extensions
) ; i
++) {
632 if (!default_extensions
[i
].flag_offset
||
633 *(base
+ default_extensions
[i
].flag_offset
)) {
634 extStrLen
+= (GLuint
)_mesa_strlen(default_extensions
[i
].name
) + 1;
639 extStrLen
+= _mesa_strlen(extraExt
) + 1; /* +1 for space */
641 /* allocate the extension string */
642 s
= (char *) _mesa_malloc(extStrLen
);
646 /* second, build the extension string */
648 for (i
= 0 ; i
< Elements(default_extensions
) ; i
++) {
649 if (!default_extensions
[i
].flag_offset
||
650 *(base
+ default_extensions
[i
].flag_offset
)) {
651 GLuint len
= (GLuint
)_mesa_strlen(default_extensions
[i
].name
);
652 _mesa_memcpy(s
+ extStrLen
, default_extensions
[i
].name
, len
);
658 ASSERT(extStrLen
> 0);
660 s
[extStrLen
- 1] = 0; /* -1 to overwrite trailing the ' ' */
664 s
= append(s
, extraExt
);
667 return (GLubyte
*) s
;