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.
29 * \brief Extension handling
36 #include "extensions.h"
37 #include "mfeatures.h"
43 ES1
= 1 << API_OPENGLES
,
44 ES2
= 1 << API_OPENGLES2
,
48 * \brief An element of the \c extension_table.
51 /** Name of extension, such as "GL_ARB_depth_clamp". */
54 /** Offset (in bytes) of the corresponding member in struct gl_extensions. */
57 /** Set of API's in which the extension exists, as a bitset. */
63 * Given a member \c x of struct gl_extensions, return offset of
66 #define o(x) offsetof(struct gl_extensions, x)
70 * \brief Table of supported OpenGL extensions for all API's.
72 * Note: The GL_MESAX_* extensions are placeholders for future ARB extensions.
74 static const struct extension extension_table
[] = {
76 { "GL_ARB_ES2_compatibility", o(ARB_ES2_compatibility
), GL
},
77 { "GL_ARB_blend_func_extended", o(ARB_blend_func_extended
), GL
},
78 { "GL_ARB_copy_buffer", o(ARB_copy_buffer
), GL
},
79 { "GL_ARB_depth_buffer_float", o(ARB_depth_buffer_float
), GL
},
80 { "GL_ARB_depth_clamp", o(ARB_depth_clamp
), GL
},
81 { "GL_ARB_depth_texture", o(ARB_depth_texture
), GL
},
82 { "GL_ARB_draw_buffers", o(ARB_draw_buffers
), GL
},
83 { "GL_ARB_draw_buffers_blend", o(ARB_draw_buffers_blend
), GL
},
84 { "GL_ARB_draw_elements_base_vertex", o(ARB_draw_elements_base_vertex
), GL
},
85 { "GL_ARB_draw_instanced", o(ARB_draw_instanced
), GL
},
86 { "GL_ARB_explicit_attrib_location", o(ARB_explicit_attrib_location
), GL
},
87 { "GL_ARB_fragment_coord_conventions", o(ARB_fragment_coord_conventions
), GL
},
88 { "GL_ARB_fragment_program", o(ARB_fragment_program
), GL
},
89 { "GL_ARB_fragment_program_shadow", o(ARB_fragment_program_shadow
), GL
},
90 { "GL_ARB_fragment_shader", o(ARB_fragment_shader
), GL
},
91 { "GL_ARB_framebuffer_object", o(ARB_framebuffer_object
), GL
},
92 { "GL_ARB_framebuffer_sRGB", o(EXT_framebuffer_sRGB
), GL
},
93 { "GL_ARB_half_float_pixel", o(ARB_half_float_pixel
), GL
},
94 { "GL_ARB_half_float_vertex", o(ARB_half_float_vertex
), GL
},
95 { "GL_ARB_instanced_arrays", o(ARB_instanced_arrays
), GL
},
96 { "GL_ARB_map_buffer_range", o(ARB_map_buffer_range
), GL
},
97 { "GL_ARB_multisample", o(ARB_multisample
), GL
},
98 { "GL_ARB_multitexture", o(ARB_multitexture
), GL
},
99 { "GL_ARB_occlusion_query2", o(ARB_occlusion_query2
), GL
},
100 { "GL_ARB_occlusion_query", o(ARB_occlusion_query
), GL
},
101 { "GL_ARB_pixel_buffer_object", o(EXT_pixel_buffer_object
), GL
},
102 { "GL_ARB_point_parameters", o(EXT_point_parameters
), GL
},
103 { "GL_ARB_point_sprite", o(ARB_point_sprite
), GL
},
104 { "GL_ARB_provoking_vertex", o(EXT_provoking_vertex
), GL
},
105 { "GL_ARB_sampler_objects", o(ARB_sampler_objects
), GL
},
106 { "GL_ARB_seamless_cube_map", o(ARB_seamless_cube_map
), GL
},
107 { "GL_ARB_shader_objects", o(ARB_shader_objects
), GL
},
108 { "GL_ARB_shader_stencil_export", o(ARB_shader_stencil_export
), GL
},
109 { "GL_ARB_shading_language_100", o(ARB_shading_language_100
), GL
},
110 { "GL_ARB_shadow_ambient", o(ARB_shadow_ambient
), GL
},
111 { "GL_ARB_shadow", o(ARB_shadow
), GL
},
112 { "GL_ARB_sync", o(ARB_sync
), GL
},
113 { "GL_ARB_texture_border_clamp", o(ARB_texture_border_clamp
), GL
},
114 { "GL_ARB_texture_buffer_object", o(ARB_texture_buffer_object
), GL
},
115 { "GL_ARB_texture_compression", o(ARB_texture_compression
), GL
},
116 { "GL_ARB_texture_compression_rgtc", o(ARB_texture_compression_rgtc
), GL
},
117 { "GL_ARB_texture_cube_map", o(ARB_texture_cube_map
), GL
},
118 { "GL_ARB_texture_env_add", o(EXT_texture_env_add
), GL
},
119 { "GL_ARB_texture_env_combine", o(ARB_texture_env_combine
), GL
},
120 { "GL_ARB_texture_env_crossbar", o(ARB_texture_env_crossbar
), GL
},
121 { "GL_ARB_texture_env_dot3", o(ARB_texture_env_dot3
), GL
},
122 { "GL_ARB_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat
), GL
},
123 { "GL_ARB_texture_multisample", o(ARB_texture_multisample
), GL
},
124 { "GL_ARB_texture_non_power_of_two", o(ARB_texture_non_power_of_two
), GL
},
125 { "GL_ARB_texture_rectangle", o(NV_texture_rectangle
), GL
},
126 { "GL_ARB_texture_rgb10_a2ui", o(ARB_texture_rgb10_a2ui
), GL
},
127 { "GL_ARB_texture_rg", o(ARB_texture_rg
), GL
},
128 { "GL_ARB_texture_swizzle", o(EXT_texture_swizzle
), GL
},
129 { "GL_ARB_transform_feedback2", o(ARB_transform_feedback2
), GL
},
130 { "GL_ARB_transpose_matrix", o(ARB_transpose_matrix
), GL
},
131 { "GL_ARB_uniform_buffer_object", o(ARB_uniform_buffer_object
), GL
},
132 { "GL_ARB_vertex_array_bgra", o(EXT_vertex_array_bgra
), GL
},
133 { "GL_ARB_vertex_array_object", o(ARB_vertex_array_object
), GL
},
134 { "GL_ARB_vertex_buffer_object", o(ARB_vertex_buffer_object
), GL
},
135 { "GL_ARB_vertex_program", o(ARB_vertex_program
), GL
},
136 { "GL_ARB_vertex_shader", o(ARB_vertex_shader
), GL
},
137 { "GL_ARB_vertex_type_2_10_10_10_rev", o(ARB_vertex_type_2_10_10_10_rev
), GL
},
138 { "GL_ARB_window_pos", o(ARB_window_pos
), GL
},
141 { "GL_EXT_abgr", o(EXT_abgr
), GL
},
142 { "GL_EXT_bgra", o(EXT_bgra
), GL
},
143 { "GL_EXT_blend_color", o(EXT_blend_color
), GL
},
144 { "GL_EXT_blend_equation_separate", o(EXT_blend_equation_separate
), GL
},
145 { "GL_EXT_blend_func_separate", o(EXT_blend_func_separate
), GL
},
146 { "GL_EXT_blend_logic_op", o(EXT_blend_logic_op
), GL
},
147 { "GL_EXT_blend_minmax", o(EXT_blend_minmax
), GL
| ES1
| ES2
},
148 { "GL_EXT_blend_subtract", o(EXT_blend_subtract
), GL
},
149 { "GL_EXT_clip_volume_hint", o(EXT_clip_volume_hint
), GL
},
150 { "GL_EXT_compiled_vertex_array", o(EXT_compiled_vertex_array
), GL
},
151 { "GL_EXT_copy_texture", o(EXT_copy_texture
), GL
},
152 { "GL_EXT_depth_bounds_test", o(EXT_depth_bounds_test
), GL
},
153 { "GL_EXT_draw_buffers2", o(EXT_draw_buffers2
), GL
},
154 { "GL_EXT_draw_instanced", o(ARB_draw_instanced
), GL
},
155 { "GL_EXT_draw_range_elements", o(EXT_draw_range_elements
), GL
},
156 { "GL_EXT_fog_coord", o(EXT_fog_coord
), GL
},
157 { "GL_EXT_framebuffer_blit", o(EXT_framebuffer_blit
), GL
},
158 { "GL_EXT_framebuffer_multisample", o(EXT_framebuffer_multisample
), GL
},
159 { "GL_EXT_framebuffer_object", o(EXT_framebuffer_object
), GL
},
160 { "GL_EXT_framebuffer_sRGB", o(EXT_framebuffer_sRGB
), GL
},
161 { "GL_EXT_gpu_program_parameters", o(EXT_gpu_program_parameters
), GL
},
162 { "GL_EXT_gpu_shader4", o(EXT_gpu_shader4
), GL
},
163 { "GL_EXT_multi_draw_arrays", o(EXT_multi_draw_arrays
), GL
| ES1
| ES2
},
164 { "GL_EXT_packed_depth_stencil", o(EXT_packed_depth_stencil
), GL
},
165 { "GL_EXT_packed_float", o(EXT_packed_float
), GL
},
166 { "GL_EXT_packed_pixels", o(EXT_packed_pixels
), GL
},
167 { "GL_EXT_paletted_texture", o(EXT_paletted_texture
), GL
},
168 { "GL_EXT_pixel_buffer_object", o(EXT_pixel_buffer_object
), GL
},
169 { "GL_EXT_point_parameters", o(EXT_point_parameters
), GL
},
170 { "GL_EXT_polygon_offset", o(EXT_polygon_offset
), GL
},
171 { "GL_EXT_provoking_vertex", o(EXT_provoking_vertex
), GL
},
172 { "GL_EXT_rescale_normal", o(EXT_rescale_normal
), GL
},
173 { "GL_EXT_secondary_color", o(EXT_secondary_color
), GL
},
174 { "GL_EXT_separate_shader_objects", o(EXT_separate_shader_objects
), GL
},
175 { "GL_EXT_separate_specular_color", o(EXT_separate_specular_color
), GL
},
176 { "GL_EXT_shadow_funcs", o(EXT_shadow_funcs
), GL
},
177 { "GL_EXT_shared_texture_palette", o(EXT_shared_texture_palette
), GL
},
178 { "GL_EXT_stencil_two_side", o(EXT_stencil_two_side
), GL
},
179 { "GL_EXT_stencil_wrap", o(EXT_stencil_wrap
), GL
},
180 { "GL_EXT_subtexture", o(EXT_subtexture
), GL
},
181 { "GL_EXT_texture3D", o(EXT_texture3D
), GL
},
182 { "GL_EXT_texture_array", o(EXT_texture_array
), GL
},
183 { "GL_EXT_texture_compression_dxt1", o(EXT_texture_compression_s3tc
), GL
| ES1
| ES2
},
184 { "GL_EXT_texture_compression_rgtc", o(ARB_texture_compression_rgtc
), GL
},
185 { "GL_EXT_texture_compression_s3tc", o(EXT_texture_compression_s3tc
), GL
},
186 { "GL_EXT_texture_cube_map", o(ARB_texture_cube_map
), GL
},
187 { "GL_EXT_texture_edge_clamp", o(SGIS_texture_edge_clamp
), GL
},
188 { "GL_EXT_texture_env_add", o(EXT_texture_env_add
), GL
},
189 { "GL_EXT_texture_env_combine", o(EXT_texture_env_combine
), GL
},
190 { "GL_EXT_texture_env_dot3", o(EXT_texture_env_dot3
), GL
},
191 { "GL_EXT_texture_filter_anisotropic", o(EXT_texture_filter_anisotropic
), GL
| ES1
| ES2
},
192 { "GL_EXT_texture_format_BGRA8888", o(EXT_texture_format_BGRA8888
), ES1
| ES2
},
193 { "GL_EXT_texture_integer", o(EXT_texture_integer
), GL
},
194 { "GL_EXT_texture_lod_bias", o(EXT_texture_lod_bias
), GL
| ES1
},
195 { "GL_EXT_texture_mirror_clamp", o(EXT_texture_mirror_clamp
), GL
},
196 { "GL_EXT_texture_object", o(EXT_texture_object
), GL
},
197 { "GL_EXT_texture", o(EXT_texture
), GL
},
198 { "GL_EXT_texture_rectangle", o(NV_texture_rectangle
), GL
},
199 { "GL_EXT_texture_shared_exponent", o(EXT_texture_shared_exponent
), GL
},
200 { "GL_EXT_texture_sRGB", o(EXT_texture_sRGB
), GL
},
201 { "GL_EXT_texture_sRGB_decode", o(EXT_texture_sRGB_decode
), GL
},
202 { "GL_EXT_texture_swizzle", o(EXT_texture_swizzle
), GL
},
203 { "GL_EXT_texture_type_2_10_10_10_REV", o(dummy_true
), ES2
},
204 { "GL_EXT_timer_query", o(EXT_timer_query
), GL
},
205 { "GL_EXT_transform_feedback", o(EXT_transform_feedback
), GL
},
206 { "GL_EXT_vertex_array_bgra", o(EXT_vertex_array_bgra
), GL
},
207 { "GL_EXT_vertex_array", o(EXT_vertex_array
), GL
},
208 { "GL_EXT_vertex_array_set", o(EXT_vertex_array_set
), GL
},
211 { "GL_OES_blend_equation_separate", o(EXT_blend_equation_separate
), ES1
},
212 { "GL_OES_blend_func_separate", o(EXT_blend_func_separate
), ES1
},
213 { "GL_OES_blend_subtract", o(EXT_blend_subtract
), ES1
},
214 { "GL_OES_byte_coordinates", o(dummy_true
), ES1
},
215 { "GL_OES_compressed_paletted_texture", o(dummy_false
), DISABLE
},
216 { "GL_OES_depth24", o(EXT_framebuffer_object
), ES1
| ES2
},
217 { "GL_OES_depth32", o(dummy_false
), DISABLE
},
218 { "GL_OES_depth_texture", o(ARB_depth_texture
), ES2
},
219 #if FEATURE_OES_draw_texture
220 { "GL_OES_draw_texture", o(OES_draw_texture
), ES1
| ES2
},
222 #if FEATURE_OES_EGL_image
223 /* FIXME: Mesa expects GL_OES_EGL_image to be available in OpenGL contexts. */
224 { "GL_OES_EGL_image", o(OES_EGL_image
), GL
| ES1
| ES2
},
226 { "GL_OES_element_index_uint", o(EXT_vertex_array
), ES1
| ES2
},
227 { "GL_OES_fbo_render_mipmap", o(EXT_framebuffer_object
), ES1
| ES2
},
228 { "GL_OES_fixed_point", o(dummy_true
), ES1
},
229 { "GL_OES_framebuffer_object", o(EXT_framebuffer_object
), ES1
},
230 { "GL_OES_mapbuffer", o(ARB_vertex_buffer_object
), ES1
| ES2
},
231 { "GL_OES_matrix_get", o(dummy_true
), ES1
},
232 { "GL_OES_packed_depth_stencil", o(EXT_packed_depth_stencil
), ES1
| ES2
},
233 { "GL_OES_point_size_array", o(dummy_true
), ES1
},
234 { "GL_OES_point_sprite", o(ARB_point_sprite
), ES1
},
235 { "GL_OES_query_matrix", o(dummy_true
), ES1
},
236 { "GL_OES_read_format", o(OES_read_format
), GL
| ES1
},
237 { "GL_OES_rgb8_rgba8", o(EXT_framebuffer_object
), ES1
| ES2
},
238 { "GL_OES_single_precision", o(dummy_true
), ES1
},
239 { "GL_OES_standard_derivatives", o(OES_standard_derivatives
), ES2
},
240 { "GL_OES_stencil1", o(dummy_false
), DISABLE
},
241 { "GL_OES_stencil4", o(dummy_false
), DISABLE
},
242 { "GL_OES_stencil8", o(EXT_framebuffer_object
), ES1
| ES2
},
243 { "GL_OES_stencil_wrap", o(EXT_stencil_wrap
), ES1
},
244 { "GL_OES_texture_3D", o(EXT_texture3D
), ES2
},
245 { "GL_OES_texture_cube_map", o(ARB_texture_cube_map
), ES1
},
246 { "GL_OES_texture_env_crossbar", o(ARB_texture_env_crossbar
), ES1
},
247 { "GL_OES_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat
), ES1
},
248 { "GL_OES_texture_npot", o(ARB_texture_non_power_of_two
), ES2
},
250 /* Vendor extensions */
251 { "GL_3DFX_texture_compression_FXT1", o(TDFX_texture_compression_FXT1
), GL
},
252 { "GL_AMD_conservative_depth", o(AMD_conservative_depth
), GL
},
253 { "GL_APPLE_client_storage", o(APPLE_client_storage
), GL
},
254 { "GL_APPLE_object_purgeable", o(APPLE_object_purgeable
), GL
},
255 { "GL_APPLE_packed_pixels", o(APPLE_packed_pixels
), GL
},
256 { "GL_APPLE_vertex_array_object", o(APPLE_vertex_array_object
), GL
},
257 { "GL_ATI_blend_equation_separate", o(EXT_blend_equation_separate
), GL
},
258 { "GL_ATI_envmap_bumpmap", o(ATI_envmap_bumpmap
), GL
},
259 { "GL_ATI_fragment_shader", o(ATI_fragment_shader
), GL
},
260 { "GL_ATI_separate_stencil", o(ATI_separate_stencil
), GL
},
261 { "GL_ATI_texture_env_combine3", o(ATI_texture_env_combine3
), GL
},
262 { "GL_ATI_texture_mirror_once", o(ATI_texture_mirror_once
), GL
},
263 { "GL_IBM_multimode_draw_arrays", o(IBM_multimode_draw_arrays
), GL
},
264 { "GL_IBM_rasterpos_clip", o(IBM_rasterpos_clip
), GL
},
265 { "GL_IBM_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat
), GL
},
266 { "GL_INGR_blend_func_separate", o(EXT_blend_func_separate
), GL
},
267 { "GL_MESA_pack_invert", o(MESA_pack_invert
), GL
},
268 { "GL_MESA_resize_buffers", o(MESA_resize_buffers
), GL
},
269 { "GL_MESA_texture_array", o(MESA_texture_array
), GL
},
270 { "GL_MESA_texture_signed_rgba", o(MESA_texture_signed_rgba
), GL
},
271 { "GL_MESA_window_pos", o(ARB_window_pos
), GL
},
272 { "GL_MESAX_texture_float", o(ARB_texture_float
), GL
},
273 { "GL_MESA_ycbcr_texture", o(MESA_ycbcr_texture
), GL
},
274 { "GL_NV_blend_square", o(NV_blend_square
), GL
},
275 { "GL_NV_conditional_render", o(NV_conditional_render
), GL
},
276 { "GL_NV_depth_clamp", o(ARB_depth_clamp
), GL
},
277 { "GL_NV_fragment_program", o(NV_fragment_program
), GL
},
278 { "GL_NV_fragment_program_option", o(NV_fragment_program_option
), GL
},
279 { "GL_NV_light_max_exponent", o(NV_light_max_exponent
), GL
},
280 { "GL_NV_packed_depth_stencil", o(EXT_packed_depth_stencil
), GL
},
281 { "GL_NV_point_sprite", o(NV_point_sprite
), GL
},
282 { "GL_NV_primitive_restart", o(NV_primitive_restart
), GL
},
283 { "GL_NV_texgen_reflection", o(NV_texgen_reflection
), GL
},
284 { "GL_NV_texture_env_combine4", o(NV_texture_env_combine4
), GL
},
285 { "GL_NV_texture_rectangle", o(NV_texture_rectangle
), GL
},
286 { "GL_NV_vertex_program1_1", o(NV_vertex_program1_1
), GL
},
287 { "GL_NV_vertex_program", o(NV_vertex_program
), GL
},
288 { "GL_S3_s3tc", o(S3_s3tc
), GL
},
289 { "GL_SGIS_generate_mipmap", o(SGIS_generate_mipmap
), GL
},
290 { "GL_SGIS_texture_border_clamp", o(ARB_texture_border_clamp
), GL
},
291 { "GL_SGIS_texture_edge_clamp", o(SGIS_texture_edge_clamp
), GL
},
292 { "GL_SGIS_texture_lod", o(SGIS_texture_lod
), GL
},
293 { "GL_SGI_texture_color_table", o(SGI_texture_color_table
), GL
},
294 { "GL_SUN_multi_draw_arrays", o(EXT_multi_draw_arrays
), GL
},
301 * Given an extension name, lookup up the corresponding member of struct
302 * gl_extensions and return that member's offset (in bytes). If the name is
303 * not found in the \c extension_table, return 0.
305 * \param name Name of extension.
306 * \return Offset of member in struct gl_extensions.
309 name_to_offset(const char* name
)
311 const struct extension
*i
;
316 for (i
= extension_table
; i
->name
!= 0; ++i
) {
317 if (strcmp(name
, i
->name
) == 0)
326 * \brief Extensions enabled by default.
328 * These extensions are enabled by _mesa_init_extensions().
330 * XXX: Should these defaults also apply to GLES?
332 static const size_t default_extensions
[] = {
336 o(ARB_texture_compression
),
337 o(ARB_transpose_matrix
),
338 o(ARB_vertex_buffer_object
),
343 o(EXT_compiled_vertex_array
),
345 o(EXT_draw_range_elements
),
346 o(EXT_multi_draw_arrays
),
347 o(EXT_packed_pixels
),
348 o(EXT_polygon_offset
),
349 o(EXT_rescale_normal
),
350 o(EXT_separate_specular_color
),
354 o(EXT_texture_object
),
358 o(OES_standard_derivatives
),
360 /* Vendor Extensions */
361 o(APPLE_packed_pixels
),
362 o(IBM_multimode_draw_arrays
),
363 o(IBM_rasterpos_clip
),
364 o(NV_light_max_exponent
),
365 o(NV_texgen_reflection
),
366 o(SGIS_generate_mipmap
),
367 o(SGIS_texture_edge_clamp
),
375 * Enable all extensions suitable for a software-only renderer.
376 * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc.
379 _mesa_enable_sw_extensions(struct gl_context
*ctx
)
381 /*ctx->Extensions.ARB_copy_buffer = GL_TRUE;*/
382 ctx
->Extensions
.ARB_depth_clamp
= GL_TRUE
;
383 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
384 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
385 ctx
->Extensions
.ARB_draw_elements_base_vertex
= GL_TRUE
;
386 ctx
->Extensions
.ARB_draw_instanced
= GL_TRUE
;
387 ctx
->Extensions
.ARB_explicit_attrib_location
= GL_TRUE
;
388 ctx
->Extensions
.ARB_fragment_coord_conventions
= GL_TRUE
;
389 #if FEATURE_ARB_fragment_program
390 ctx
->Extensions
.ARB_fragment_program
= GL_TRUE
;
391 ctx
->Extensions
.ARB_fragment_program_shadow
= GL_TRUE
;
393 #if FEATURE_ARB_fragment_shader
394 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
396 #if FEATURE_ARB_framebuffer_object
397 ctx
->Extensions
.ARB_framebuffer_object
= GL_TRUE
;
399 #if FEATURE_ARB_geometry_shader4 && 0
400 /* XXX re-enable when GLSL compiler again supports geometry shaders */
401 ctx
->Extensions
.ARB_geometry_shader4
= GL_TRUE
;
403 ctx
->Extensions
.ARB_half_float_pixel
= GL_TRUE
;
404 ctx
->Extensions
.ARB_half_float_vertex
= GL_TRUE
;
405 ctx
->Extensions
.ARB_map_buffer_range
= GL_TRUE
;
406 ctx
->Extensions
.ARB_multitexture
= GL_TRUE
;
408 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
409 ctx
->Extensions
.ARB_occlusion_query2
= GL_TRUE
;
411 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
412 #if FEATURE_ARB_shader_objects
413 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
414 ctx
->Extensions
.EXT_separate_shader_objects
= GL_TRUE
;
416 #if FEATURE_ARB_shading_language_100
417 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
419 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
420 ctx
->Extensions
.ARB_shadow_ambient
= GL_TRUE
;
421 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
;
422 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
423 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
424 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
425 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
426 /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/
427 ctx
->Extensions
.ARB_texture_mirrored_repeat
= GL_TRUE
;
428 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
429 ctx
->Extensions
.ARB_texture_rg
= GL_TRUE
;
430 ctx
->Extensions
.ARB_texture_compression_rgtc
= GL_TRUE
;
431 ctx
->Extensions
.ARB_vertex_array_object
= GL_TRUE
;
432 #if FEATURE_ARB_vertex_program
433 ctx
->Extensions
.ARB_vertex_program
= GL_TRUE
;
435 #if FEATURE_ARB_vertex_shader
436 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
438 #if FEATURE_ARB_vertex_buffer_object
439 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
442 ctx
->Extensions
.ARB_sync
= GL_TRUE
;
444 ctx
->Extensions
.APPLE_vertex_array_object
= GL_TRUE
;
445 #if FEATURE_APPLE_object_purgeable
446 ctx
->Extensions
.APPLE_object_purgeable
= GL_TRUE
;
448 ctx
->Extensions
.ATI_envmap_bumpmap
= GL_TRUE
;
449 #if FEATURE_ATI_fragment_shader
450 ctx
->Extensions
.ATI_fragment_shader
= GL_TRUE
;
452 ctx
->Extensions
.ATI_texture_env_combine3
= GL_TRUE
;
453 ctx
->Extensions
.ATI_texture_mirror_once
= GL_TRUE
;
454 ctx
->Extensions
.ATI_separate_stencil
= GL_TRUE
;
455 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
456 ctx
->Extensions
.EXT_blend_equation_separate
= GL_TRUE
;
457 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
458 ctx
->Extensions
.EXT_blend_logic_op
= GL_TRUE
;
459 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
460 ctx
->Extensions
.EXT_blend_subtract
= GL_TRUE
;
461 ctx
->Extensions
.EXT_depth_bounds_test
= GL_TRUE
;
462 ctx
->Extensions
.EXT_draw_buffers2
= GL_TRUE
;
463 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
464 #if FEATURE_EXT_framebuffer_object
465 ctx
->Extensions
.EXT_framebuffer_object
= GL_TRUE
;
467 #if FEATURE_EXT_framebuffer_blit
468 ctx
->Extensions
.EXT_framebuffer_blit
= GL_TRUE
;
470 #if FEATURE_ARB_framebuffer_object
471 ctx
->Extensions
.EXT_framebuffer_multisample
= GL_TRUE
;
473 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
474 ctx
->Extensions
.EXT_packed_depth_stencil
= GL_TRUE
;
475 ctx
->Extensions
.EXT_paletted_texture
= GL_TRUE
;
476 #if FEATURE_EXT_pixel_buffer_object
477 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
479 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
480 ctx
->Extensions
.EXT_provoking_vertex
= GL_TRUE
;
481 ctx
->Extensions
.EXT_shadow_funcs
= GL_TRUE
;
482 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
483 ctx
->Extensions
.EXT_shared_texture_palette
= GL_TRUE
;
484 ctx
->Extensions
.EXT_stencil_wrap
= GL_TRUE
;
485 ctx
->Extensions
.EXT_stencil_two_side
= GL_TRUE
;
486 ctx
->Extensions
.EXT_texture_array
= GL_TRUE
;
487 ctx
->Extensions
.EXT_texture_env_add
= GL_TRUE
;
488 ctx
->Extensions
.EXT_texture_env_combine
= GL_TRUE
;
489 ctx
->Extensions
.EXT_texture_env_dot3
= GL_TRUE
;
490 ctx
->Extensions
.EXT_texture_mirror_clamp
= GL_TRUE
;
491 ctx
->Extensions
.EXT_texture_lod_bias
= GL_TRUE
;
492 #if FEATURE_EXT_texture_sRGB
493 ctx
->Extensions
.EXT_texture_sRGB
= GL_TRUE
;
494 ctx
->Extensions
.EXT_texture_sRGB_decode
= GL_TRUE
;
496 ctx
->Extensions
.EXT_texture_swizzle
= GL_TRUE
;
497 #if FEATURE_EXT_transform_feedback
498 /*ctx->Extensions.EXT_transform_feedback = GL_TRUE;*/
500 ctx
->Extensions
.EXT_vertex_array_bgra
= GL_TRUE
;
501 /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/
502 ctx
->Extensions
.MESA_pack_invert
= GL_TRUE
;
503 ctx
->Extensions
.MESA_resize_buffers
= GL_TRUE
;
504 ctx
->Extensions
.MESA_texture_array
= GL_TRUE
;
505 ctx
->Extensions
.MESA_ycbcr_texture
= GL_TRUE
;
506 ctx
->Extensions
.NV_blend_square
= GL_TRUE
;
507 ctx
->Extensions
.NV_conditional_render
= GL_TRUE
;
508 /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/
509 ctx
->Extensions
.NV_point_sprite
= GL_TRUE
;
510 ctx
->Extensions
.NV_texture_env_combine4
= GL_TRUE
;
511 ctx
->Extensions
.NV_texture_rectangle
= GL_TRUE
;
512 /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/
513 #if FEATURE_NV_vertex_program
514 ctx
->Extensions
.NV_vertex_program
= GL_TRUE
;
515 ctx
->Extensions
.NV_vertex_program1_1
= GL_TRUE
;
517 #if FEATURE_NV_fragment_program
518 ctx
->Extensions
.NV_fragment_program
= GL_TRUE
;
520 #if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program
521 ctx
->Extensions
.NV_fragment_program_option
= GL_TRUE
;
523 ctx
->Extensions
.SGI_texture_color_table
= GL_TRUE
;
524 /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/
525 ctx
->Extensions
.SGIS_texture_edge_clamp
= GL_TRUE
;
526 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
527 ctx
->Extensions
.EXT_gpu_program_parameters
= GL_TRUE
;
529 #if FEATURE_texture_fxt1
530 _mesa_enable_extension(ctx
, "GL_3DFX_texture_compression_FXT1");
532 #if FEATURE_texture_s3tc
533 if (ctx
->Mesa_DXTn
) {
534 _mesa_enable_extension(ctx
, "GL_EXT_texture_compression_s3tc");
535 _mesa_enable_extension(ctx
, "GL_S3_s3tc");
542 * Enable common EXT extensions in the ARB_imaging subset.
545 _mesa_enable_imaging_extensions(struct gl_context
*ctx
)
547 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
548 ctx
->Extensions
.EXT_blend_logic_op
= GL_TRUE
;
549 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
550 ctx
->Extensions
.EXT_blend_subtract
= GL_TRUE
;
556 * Enable all OpenGL 1.3 features and extensions.
557 * A convenience function to be called by drivers.
560 _mesa_enable_1_3_extensions(struct gl_context
*ctx
)
562 /*ctx->Extensions.ARB_multisample = GL_TRUE;*/
563 ctx
->Extensions
.ARB_multitexture
= GL_TRUE
;
564 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
;
565 /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/
566 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
567 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
568 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
569 ctx
->Extensions
.EXT_texture_env_add
= GL_TRUE
;
570 /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/
576 * Enable all OpenGL 1.4 features and extensions.
577 * A convenience function to be called by drivers.
580 _mesa_enable_1_4_extensions(struct gl_context
*ctx
)
582 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
583 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
584 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
585 ctx
->Extensions
.ARB_texture_mirrored_repeat
= GL_TRUE
;
586 ctx
->Extensions
.ARB_window_pos
= GL_TRUE
;
587 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
588 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
589 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
590 ctx
->Extensions
.EXT_blend_subtract
= GL_TRUE
;
591 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
592 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
593 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
594 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
595 ctx
->Extensions
.EXT_stencil_wrap
= GL_TRUE
;
596 ctx
->Extensions
.EXT_texture_lod_bias
= GL_TRUE
;
597 /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/
602 * Enable all OpenGL 1.5 features and extensions.
603 * A convenience function to be called by drivers.
606 _mesa_enable_1_5_extensions(struct gl_context
*ctx
)
608 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
609 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
610 ctx
->Extensions
.EXT_shadow_funcs
= GL_TRUE
;
615 * Enable all OpenGL 2.0 features and extensions.
616 * A convenience function to be called by drivers.
619 _mesa_enable_2_0_extensions(struct gl_context
*ctx
)
621 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
622 #if FEATURE_ARB_fragment_shader
623 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
625 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
626 ctx
->Extensions
.EXT_blend_equation_separate
= GL_TRUE
;
627 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
628 #if FEATURE_ARB_shader_objects
629 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
631 #if FEATURE_ARB_shading_language_100
632 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
634 ctx
->Extensions
.EXT_stencil_two_side
= GL_TRUE
;
635 #if FEATURE_ARB_vertex_shader
636 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
642 * Enable all OpenGL 2.1 features and extensions.
643 * A convenience function to be called by drivers.
646 _mesa_enable_2_1_extensions(struct gl_context
*ctx
)
648 #if FEATURE_EXT_pixel_buffer_object
649 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
651 #if FEATURE_EXT_texture_sRGB
652 ctx
->Extensions
.EXT_texture_sRGB
= GL_TRUE
;
658 * Either enable or disable the named extension.
659 * \return GL_TRUE for success, GL_FALSE if invalid extension name
662 set_extension( struct gl_context
*ctx
, const char *name
, GLboolean state
)
666 if (ctx
->Extensions
.String
) {
667 /* The string was already queried - can't change it now! */
668 _mesa_problem(ctx
, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name
);
672 offset
= name_to_offset(name
);
674 _mesa_problem(ctx
, "Trying to enable/disable unknown extension %s",
677 } else if (offset
== o(dummy_true
) && state
== GL_FALSE
) {
678 _mesa_problem(ctx
, "Trying to disable a permanently enabled extension: "
682 GLboolean
*base
= (GLboolean
*) &ctx
->Extensions
;
683 base
[offset
] = state
;
690 * Enable the named extension.
691 * Typically called by drivers.
694 _mesa_enable_extension( struct gl_context
*ctx
, const char *name
)
696 if (!set_extension(ctx
, name
, GL_TRUE
))
697 _mesa_problem(ctx
, "Trying to enable unknown extension: %s", name
);
702 * Disable the named extension.
703 * XXX is this really needed???
706 _mesa_disable_extension( struct gl_context
*ctx
, const char *name
)
708 if (!set_extension(ctx
, name
, GL_FALSE
))
709 _mesa_problem(ctx
, "Trying to disable unknown extension: %s", name
);
714 * Test if the named extension is enabled in this context.
717 _mesa_extension_is_enabled( struct gl_context
*ctx
, const char *name
)
725 offset
= name_to_offset(name
);
728 base
= (GLboolean
*) &ctx
->Extensions
;
734 * \brief Apply the \c MESA_EXTENSION_OVERRIDE environment variable.
736 * \c MESA_EXTENSION_OVERRIDE is a space-separated list of extensions to
737 * enable or disable. The list is processed thus:
738 * - Enable recognized extension names that are prefixed with '+'.
739 * - Disable recognized extension names that are prefixed with '-'.
740 * - Enable recognized extension names that are not prefixed.
741 * - Collect unrecognized extension names in a new string.
743 * \return Space-separated list of unrecognized extension names (which must
744 * be freed). Does not return \c NULL.
747 get_extension_override( struct gl_context
*ctx
)
749 const char *env_const
= _mesa_getenv("MESA_EXTENSION_OVERRIDE");
755 if (env_const
== NULL
) {
756 /* Return the empty string rather than NULL. This simplifies the logic
757 * of client functions. */
758 return calloc(1, sizeof(char));
761 /* extra_exts: List of unrecognized extensions. */
762 extra_exts
= calloc(strlen(env_const
), sizeof(char));
764 /* Copy env_const because strtok() is destructive. */
765 env
= strdup(env_const
);
766 for (ext
= strtok(env
, " "); ext
!= NULL
; ext
= strtok(NULL
, " ")) {
782 recognized
= set_extension(ctx
, ext
, enable
);
784 strcat(extra_exts
, ext
);
785 strcat(extra_exts
, " ");
789 /* Remove trailing space. */
790 len
= strlen(extra_exts
);
791 if (extra_exts
[len
- 1] == ' ')
792 extra_exts
[len
- 1] = '\0';
799 * \brief Initialize extension tables and enable default extensions.
801 * This should be called during context initialization.
802 * Note: Sets gl_extensions.dummy_true to true.
805 _mesa_init_extensions( struct gl_context
*ctx
)
807 GLboolean
*base
= (GLboolean
*) &ctx
->Extensions
;
808 GLboolean
*sentinel
= base
+ o(extension_sentinel
);
812 /* First, turn all extensions off. */
813 for (i
= base
; i
!= sentinel
; ++i
)
816 /* Then, selectively turn default extensions on. */
817 ctx
->Extensions
.dummy_true
= GL_TRUE
;
818 for (j
= default_extensions
; *j
!= 0; ++j
)
824 * Construct the GL_EXTENSIONS string. Called the first time that
825 * glGetString(GL_EXTENSIONS) is called.
828 _mesa_make_extension_string(struct gl_context
*ctx
)
830 /* The extension string. */
832 /* Length of extension string. */
834 /* String of extra extensions. */
835 char *extra_extensions
= get_extension_override(ctx
);
836 GLboolean
*base
= (GLboolean
*) &ctx
->Extensions
;
837 const struct extension
*i
;
839 /* Compute length of the extension string. */
840 for (i
= extension_table
; i
->name
!= 0; ++i
) {
841 if (base
[i
->offset
] && (i
->api_set
& (1 << ctx
->API
))) {
842 length
+= strlen(i
->name
) + 1; /* +1 for space */
845 if (extra_extensions
!= NULL
)
846 length
+= 1 + strlen(extra_extensions
); /* +1 for space */
848 exts
= (char *) calloc(length
+ 1, sizeof(char));
850 free(extra_extensions
);
854 /* Build the extension string.*/
855 for (i
= extension_table
; i
->name
!= 0; ++i
) {
856 if (base
[i
->offset
] && (i
->api_set
& (1 << ctx
->API
))) {
857 strcat(exts
, i
->name
);
861 if (extra_extensions
!= 0) {
862 strcat(exts
, extra_extensions
);
863 free(extra_extensions
);
866 return (GLubyte
*) exts
;
870 * Return number of enabled extensions.
873 _mesa_get_extension_count(struct gl_context
*ctx
)
876 const struct extension
*i
;
878 /* only count once */
879 if (ctx
->Extensions
.Count
!= 0)
880 return ctx
->Extensions
.Count
;
882 base
= (GLboolean
*) &ctx
->Extensions
;
883 for (i
= extension_table
; i
->name
!= 0; ++i
) {
884 if (base
[i
->offset
]) {
885 ctx
->Extensions
.Count
++;
888 return ctx
->Extensions
.Count
;
892 * Return name of i-th enabled extension
895 _mesa_get_enabled_extension(struct gl_context
*ctx
, GLuint index
)
897 const GLboolean
*base
;
899 const struct extension
*i
;
904 base
= (GLboolean
*) &ctx
->Extensions
;
906 for (i
= extension_table
; i
->name
!= 0; ++i
) {
907 if (n
== index
&& base
[i
->offset
]) {
908 return (GLubyte
*) i
->name
;
909 } else if (base
[i
->offset
]) {