2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. 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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
29 * \brief Extension handling
36 #include "extensions.h"
40 struct gl_extensions _mesa_extension_override_enables
;
41 struct gl_extensions _mesa_extension_override_disables
;
42 static char *extra_extensions
= NULL
;
43 static char *cant_disable_extensions
= NULL
;
47 GLL
= 1 << API_OPENGL_COMPAT
, /* GL Legacy / Compatibility */
48 GLC
= 1 << API_OPENGL_CORE
, /* GL Core */
49 GL
= (1 << API_OPENGL_COMPAT
) | (1 << API_OPENGL_CORE
),
50 ES1
= 1 << API_OPENGLES
,
51 ES2
= 1 << API_OPENGLES2
,
52 ES3
= 1 << (API_OPENGL_LAST
+ 1),
56 * \brief An element of the \c extension_table.
59 /** Name of extension, such as "GL_ARB_depth_clamp". */
62 /** Offset (in bytes) of the corresponding member in struct gl_extensions. */
65 /** Set of API's in which the extension exists, as a bitset. */
68 /** Year the extension was proposed or approved. Used to sort the
69 * extension string chronologically. */
75 * Given a member \c x of struct gl_extensions, return offset of
78 #define o(x) offsetof(struct gl_extensions, x)
82 * \brief Table of supported OpenGL extensions for all API's.
84 static const struct extension extension_table
[] = {
86 { "GL_ARB_ES2_compatibility", o(ARB_ES2_compatibility
), GL
, 2009 },
87 { "GL_ARB_ES3_compatibility", o(ARB_ES3_compatibility
), GL
, 2012 },
88 { "GL_ARB_arrays_of_arrays", o(ARB_arrays_of_arrays
), GL
, 2012 },
89 { "GL_ARB_base_instance", o(ARB_base_instance
), GL
, 2011 },
90 { "GL_ARB_blend_func_extended", o(ARB_blend_func_extended
), GL
, 2009 },
91 { "GL_ARB_buffer_storage", o(ARB_buffer_storage
), GL
, 2013 },
92 { "GL_ARB_clear_buffer_object", o(dummy_true
), GL
, 2012 },
93 { "GL_ARB_clear_texture", o(ARB_clear_texture
), GL
, 2013 },
94 { "GL_ARB_clip_control", o(ARB_clip_control
), GL
, 2014 },
95 { "GL_ARB_color_buffer_float", o(ARB_color_buffer_float
), GL
, 2004 },
96 { "GL_ARB_compressed_texture_pixel_storage", o(dummy_true
), GL
, 2011 },
97 { "GL_ARB_compute_shader", o(ARB_compute_shader
), GL
, 2012 },
98 { "GL_ARB_conditional_render_inverted", o(ARB_conditional_render_inverted
), GL
, 2014 },
99 { "GL_ARB_copy_buffer", o(dummy_true
), GL
, 2008 },
100 { "GL_ARB_copy_image", o(ARB_copy_image
), GL
, 2012 },
101 { "GL_ARB_conservative_depth", o(ARB_conservative_depth
), GL
, 2011 },
102 { "GL_ARB_debug_output", o(dummy_true
), GL
, 2009 },
103 { "GL_ARB_depth_buffer_float", o(ARB_depth_buffer_float
), GL
, 2008 },
104 { "GL_ARB_depth_clamp", o(ARB_depth_clamp
), GL
, 2003 },
105 { "GL_ARB_depth_texture", o(ARB_depth_texture
), GLL
, 2001 },
106 { "GL_ARB_derivative_control", o(ARB_derivative_control
), GL
, 2014 },
107 { "GL_ARB_direct_state_access", o(dummy_true
), GLC
, 2014 },
108 { "GL_ARB_draw_buffers", o(dummy_true
), GL
, 2002 },
109 { "GL_ARB_draw_buffers_blend", o(ARB_draw_buffers_blend
), GL
, 2009 },
110 { "GL_ARB_draw_elements_base_vertex", o(ARB_draw_elements_base_vertex
), GL
, 2009 },
111 { "GL_ARB_draw_indirect", o(ARB_draw_indirect
), GLC
, 2010 },
112 { "GL_ARB_draw_instanced", o(ARB_draw_instanced
), GL
, 2008 },
113 { "GL_ARB_explicit_attrib_location", o(ARB_explicit_attrib_location
), GL
, 2009 },
114 { "GL_ARB_explicit_uniform_location", o(ARB_explicit_uniform_location
), GL
, 2012 },
115 { "GL_ARB_fragment_coord_conventions", o(ARB_fragment_coord_conventions
), GL
, 2009 },
116 { "GL_ARB_fragment_layer_viewport", o(ARB_fragment_layer_viewport
), GLC
, 2012 },
117 { "GL_ARB_fragment_program", o(ARB_fragment_program
), GLL
, 2002 },
118 { "GL_ARB_fragment_program_shadow", o(ARB_fragment_program_shadow
), GLL
, 2003 },
119 { "GL_ARB_fragment_shader", o(ARB_fragment_shader
), GL
, 2002 },
120 { "GL_ARB_framebuffer_no_attachments", o(ARB_framebuffer_no_attachments
), GL
, 2012 },
121 { "GL_ARB_framebuffer_object", o(ARB_framebuffer_object
), GL
, 2005 },
122 { "GL_ARB_framebuffer_sRGB", o(EXT_framebuffer_sRGB
), GL
, 1998 },
123 { "GL_ARB_get_program_binary", o(dummy_true
), GL
, 2010 },
124 { "GL_ARB_get_texture_sub_image", o(dummy_true
), GL
, 2014 },
125 { "GL_ARB_gpu_shader5", o(ARB_gpu_shader5
), GLC
, 2010 },
126 { "GL_ARB_gpu_shader_fp64", o(ARB_gpu_shader_fp64
), GLC
, 2010 },
127 { "GL_ARB_half_float_pixel", o(dummy_true
), GL
, 2003 },
128 { "GL_ARB_half_float_vertex", o(ARB_half_float_vertex
), GL
, 2008 },
129 { "GL_ARB_instanced_arrays", o(ARB_instanced_arrays
), GL
, 2008 },
130 { "GL_ARB_internalformat_query", o(ARB_internalformat_query
), GL
, 2011 },
131 { "GL_ARB_invalidate_subdata", o(dummy_true
), GL
, 2012 },
132 { "GL_ARB_map_buffer_alignment", o(dummy_true
), GL
, 2011 },
133 { "GL_ARB_map_buffer_range", o(ARB_map_buffer_range
), GL
, 2008 },
134 { "GL_ARB_multi_bind", o(dummy_true
), GL
, 2013 },
135 { "GL_ARB_multi_draw_indirect", o(ARB_draw_indirect
), GLC
, 2012 },
136 { "GL_ARB_multisample", o(dummy_true
), GLL
, 1994 },
137 { "GL_ARB_multitexture", o(dummy_true
), GLL
, 1998 },
138 { "GL_ARB_occlusion_query2", o(ARB_occlusion_query2
), GL
, 2003 },
139 { "GL_ARB_occlusion_query", o(ARB_occlusion_query
), GLL
, 2001 },
140 { "GL_ARB_pipeline_statistics_query", o(ARB_pipeline_statistics_query
), GL
, 2014 },
141 { "GL_ARB_pixel_buffer_object", o(EXT_pixel_buffer_object
), GL
, 2004 },
142 { "GL_ARB_point_parameters", o(EXT_point_parameters
), GLL
, 1997 },
143 { "GL_ARB_point_sprite", o(ARB_point_sprite
), GL
, 2003 },
144 { "GL_ARB_program_interface_query", o(dummy_true
), GL
, 2012 },
145 { "GL_ARB_provoking_vertex", o(EXT_provoking_vertex
), GL
, 2009 },
146 { "GL_ARB_robustness", o(dummy_true
), GL
, 2010 },
147 { "GL_ARB_sample_shading", o(ARB_sample_shading
), GL
, 2009 },
148 { "GL_ARB_sampler_objects", o(dummy_true
), GL
, 2009 },
149 { "GL_ARB_seamless_cube_map", o(ARB_seamless_cube_map
), GL
, 2009 },
150 { "GL_ARB_seamless_cubemap_per_texture", o(AMD_seamless_cubemap_per_texture
), GL
, 2013 },
151 { "GL_ARB_separate_shader_objects", o(dummy_true
), GL
, 2010 },
152 { "GL_ARB_shader_atomic_counters", o(ARB_shader_atomic_counters
), GL
, 2011 },
153 { "GL_ARB_shader_bit_encoding", o(ARB_shader_bit_encoding
), GL
, 2010 },
154 { "GL_ARB_shader_image_load_store", o(ARB_shader_image_load_store
), GL
, 2011 },
155 { "GL_ARB_shader_objects", o(dummy_true
), GL
, 2002 },
156 { "GL_ARB_shader_precision", o(ARB_shader_precision
), GL
, 2010 },
157 { "GL_ARB_shader_stencil_export", o(ARB_shader_stencil_export
), GL
, 2009 },
158 { "GL_ARB_shader_storage_buffer_object", o(ARB_shader_storage_buffer_object
), GL
, 2012 },
159 { "GL_ARB_shader_texture_lod", o(ARB_shader_texture_lod
), GL
, 2009 },
160 { "GL_ARB_shading_language_100", o(dummy_true
), GLL
, 2003 },
161 { "GL_ARB_shading_language_packing", o(ARB_shading_language_packing
), GL
, 2011 },
162 { "GL_ARB_shading_language_420pack", o(ARB_shading_language_420pack
), GL
, 2011 },
163 { "GL_ARB_shadow", o(ARB_shadow
), GLL
, 2001 },
164 { "GL_ARB_stencil_texturing", o(ARB_stencil_texturing
), GL
, 2012 },
165 { "GL_ARB_sync", o(ARB_sync
), GL
, 2003 },
166 { "GL_ARB_texture_barrier", o(NV_texture_barrier
), GL
, 2014 },
167 { "GL_ARB_tessellation_shader", o(ARB_tessellation_shader
), GLC
, 2009 },
168 { "GL_ARB_texture_border_clamp", o(ARB_texture_border_clamp
), GLL
, 2000 },
169 { "GL_ARB_texture_buffer_object", o(ARB_texture_buffer_object
), GLC
, 2008 },
170 { "GL_ARB_texture_buffer_object_rgb32", o(ARB_texture_buffer_object_rgb32
), GLC
, 2009 },
171 { "GL_ARB_texture_buffer_range", o(ARB_texture_buffer_range
), GLC
, 2012 },
172 { "GL_ARB_texture_compression", o(dummy_true
), GLL
, 2000 },
173 { "GL_ARB_texture_compression_bptc", o(ARB_texture_compression_bptc
), GL
, 2010 },
174 { "GL_ARB_texture_compression_rgtc", o(ARB_texture_compression_rgtc
), GL
, 2004 },
175 { "GL_ARB_texture_cube_map", o(ARB_texture_cube_map
), GLL
, 1999 },
176 { "GL_ARB_texture_cube_map_array", o(ARB_texture_cube_map_array
), GL
, 2009 },
177 { "GL_ARB_texture_env_add", o(dummy_true
), GLL
, 1999 },
178 { "GL_ARB_texture_env_combine", o(ARB_texture_env_combine
), GLL
, 2001 },
179 { "GL_ARB_texture_env_crossbar", o(ARB_texture_env_crossbar
), GLL
, 2001 },
180 { "GL_ARB_texture_env_dot3", o(ARB_texture_env_dot3
), GLL
, 2001 },
181 { "GL_ARB_texture_float", o(ARB_texture_float
), GL
, 2004 },
182 { "GL_ARB_texture_gather", o(ARB_texture_gather
), GL
, 2009 },
183 { "GL_ARB_texture_mirrored_repeat", o(dummy_true
), GLL
, 2001 },
184 { "GL_ARB_texture_mirror_clamp_to_edge", o(ARB_texture_mirror_clamp_to_edge
), GL
, 2013 },
185 { "GL_ARB_texture_multisample", o(ARB_texture_multisample
), GL
, 2009 },
186 { "GL_ARB_texture_non_power_of_two", o(ARB_texture_non_power_of_two
), GL
, 2003 },
187 { "GL_ARB_texture_query_levels", o(ARB_texture_query_levels
), GL
, 2012 },
188 { "GL_ARB_texture_query_lod", o(ARB_texture_query_lod
), GL
, 2009 },
189 { "GL_ARB_texture_rectangle", o(NV_texture_rectangle
), GL
, 2004 },
190 { "GL_ARB_texture_rgb10_a2ui", o(ARB_texture_rgb10_a2ui
), GL
, 2009 },
191 { "GL_ARB_texture_rg", o(ARB_texture_rg
), GL
, 2008 },
192 { "GL_ARB_texture_stencil8", o(ARB_texture_stencil8
), GL
, 2013 },
193 { "GL_ARB_texture_storage", o(dummy_true
), GL
, 2011 },
194 { "GL_ARB_texture_storage_multisample", o(ARB_texture_multisample
), GL
, 2012 },
195 { "GL_ARB_texture_view", o(ARB_texture_view
), GL
, 2012 },
196 { "GL_ARB_texture_swizzle", o(EXT_texture_swizzle
), GL
, 2008 },
197 { "GL_ARB_timer_query", o(ARB_timer_query
), GL
, 2010 },
198 { "GL_ARB_transform_feedback2", o(ARB_transform_feedback2
), GL
, 2010 },
199 { "GL_ARB_transform_feedback3", o(ARB_transform_feedback3
), GL
, 2010 },
200 { "GL_ARB_transform_feedback_instanced", o(ARB_transform_feedback_instanced
), GL
, 2011 },
201 { "GL_ARB_transpose_matrix", o(dummy_true
), GLL
, 1999 },
202 { "GL_ARB_uniform_buffer_object", o(ARB_uniform_buffer_object
), GL
, 2009 },
203 { "GL_ARB_vertex_array_bgra", o(EXT_vertex_array_bgra
), GL
, 2008 },
204 { "GL_ARB_vertex_array_object", o(dummy_true
), GL
, 2006 },
205 { "GL_ARB_vertex_attrib_binding", o(dummy_true
), GL
, 2012 },
206 { "GL_ARB_vertex_buffer_object", o(dummy_true
), GLL
, 2003 },
207 { "GL_ARB_vertex_program", o(ARB_vertex_program
), GLL
, 2002 },
208 { "GL_ARB_vertex_shader", o(ARB_vertex_shader
), GL
, 2002 },
209 { "GL_ARB_vertex_attrib_64bit", o(ARB_vertex_attrib_64bit
), GLC
, 2010 },
210 { "GL_ARB_vertex_type_10f_11f_11f_rev", o(ARB_vertex_type_10f_11f_11f_rev
), GL
, 2013 },
211 { "GL_ARB_vertex_type_2_10_10_10_rev", o(ARB_vertex_type_2_10_10_10_rev
), GL
, 2009 },
212 { "GL_ARB_viewport_array", o(ARB_viewport_array
), GLC
, 2010 },
213 { "GL_ARB_window_pos", o(dummy_true
), GLL
, 2001 },
215 { "GL_EXT_abgr", o(dummy_true
), GL
, 1995 },
216 { "GL_EXT_bgra", o(dummy_true
), GLL
, 1995 },
217 { "GL_EXT_blend_color", o(EXT_blend_color
), GLL
, 1995 },
218 { "GL_EXT_blend_equation_separate", o(EXT_blend_equation_separate
), GL
, 2003 },
219 { "GL_EXT_blend_func_separate", o(EXT_blend_func_separate
), GLL
, 1999 },
220 { "GL_EXT_discard_framebuffer", o(dummy_true
), ES1
| ES2
, 2009 },
221 { "GL_EXT_blend_minmax", o(EXT_blend_minmax
), GLL
| ES1
| ES2
, 1995 },
222 { "GL_EXT_blend_subtract", o(dummy_true
), GLL
, 1995 },
223 { "GL_EXT_compiled_vertex_array", o(dummy_true
), GLL
, 1996 },
224 { "GL_EXT_copy_texture", o(dummy_true
), GLL
, 1995 },
225 { "GL_EXT_depth_bounds_test", o(EXT_depth_bounds_test
), GL
, 2002 },
226 { "GL_EXT_draw_buffers", o(dummy_true
), ES2
, 2012 },
227 { "GL_EXT_draw_buffers2", o(EXT_draw_buffers2
), GL
, 2006 },
228 { "GL_EXT_draw_instanced", o(ARB_draw_instanced
), GL
, 2006 },
229 { "GL_EXT_draw_range_elements", o(dummy_true
), GLL
, 1997 },
230 { "GL_EXT_fog_coord", o(dummy_true
), GLL
, 1999 },
231 { "GL_EXT_framebuffer_blit", o(dummy_true
), GL
, 2005 },
232 { "GL_EXT_framebuffer_multisample", o(EXT_framebuffer_multisample
), GL
, 2005 },
233 { "GL_EXT_framebuffer_multisample_blit_scaled", o(EXT_framebuffer_multisample_blit_scaled
), GL
, 2011 },
234 { "GL_EXT_framebuffer_object", o(dummy_true
), GLL
, 2000 },
235 { "GL_EXT_framebuffer_sRGB", o(EXT_framebuffer_sRGB
), GL
, 1998 },
236 { "GL_EXT_gpu_program_parameters", o(EXT_gpu_program_parameters
), GLL
, 2006 },
237 { "GL_EXT_gpu_shader4", o(EXT_gpu_shader4
), GL
, 2006 },
238 { "GL_EXT_map_buffer_range", o(ARB_map_buffer_range
), ES1
| ES2
, 2012 },
239 { "GL_EXT_multi_draw_arrays", o(dummy_true
), GLL
| ES1
| ES2
, 1999 },
240 { "GL_EXT_packed_depth_stencil", o(dummy_true
), GL
, 2005 },
241 { "GL_EXT_packed_float", o(EXT_packed_float
), GL
, 2004 },
242 { "GL_EXT_packed_pixels", o(dummy_true
), GLL
, 1997 },
243 { "GL_EXT_pixel_buffer_object", o(EXT_pixel_buffer_object
), GL
, 2004 },
244 { "GL_EXT_point_parameters", o(EXT_point_parameters
), GLL
, 1997 },
245 { "GL_EXT_polygon_offset", o(dummy_true
), GLL
, 1995 },
246 { "GL_EXT_polygon_offset_clamp", o(EXT_polygon_offset_clamp
), GL
, 2014 },
247 { "GL_EXT_provoking_vertex", o(EXT_provoking_vertex
), GL
, 2009 },
248 { "GL_EXT_rescale_normal", o(dummy_true
), GLL
, 1997 },
249 { "GL_EXT_secondary_color", o(dummy_true
), GLL
, 1999 },
250 { "GL_EXT_separate_shader_objects", o(dummy_true
), ES2
, 2013 },
251 { "GL_EXT_separate_specular_color", o(dummy_true
), GLL
, 1997 },
252 { "GL_EXT_shader_integer_mix", o(EXT_shader_integer_mix
), GL
| ES3
, 2013 },
253 { "GL_EXT_shadow_funcs", o(ARB_shadow
), GLL
, 2002 },
254 { "GL_EXT_stencil_two_side", o(EXT_stencil_two_side
), GLL
, 2001 },
255 { "GL_EXT_stencil_wrap", o(dummy_true
), GLL
, 2002 },
256 { "GL_EXT_subtexture", o(dummy_true
), GLL
, 1995 },
257 { "GL_EXT_texture3D", o(EXT_texture3D
), GLL
, 1996 },
258 { "GL_EXT_texture_array", o(EXT_texture_array
), GL
, 2006 },
259 { "GL_EXT_texture_compression_dxt1", o(ANGLE_texture_compression_dxt
), GL
| ES1
| ES2
, 2004 },
260 { "GL_ANGLE_texture_compression_dxt3", o(ANGLE_texture_compression_dxt
), GL
| ES1
| ES2
, 2011 },
261 { "GL_ANGLE_texture_compression_dxt5", o(ANGLE_texture_compression_dxt
), GL
| ES1
| ES2
, 2011 },
262 { "GL_EXT_texture_compression_latc", o(EXT_texture_compression_latc
), GL
, 2006 },
263 { "GL_EXT_texture_compression_rgtc", o(ARB_texture_compression_rgtc
), GL
, 2004 },
264 { "GL_EXT_texture_compression_s3tc", o(EXT_texture_compression_s3tc
), GL
, 2000 },
265 { "GL_EXT_texture_cube_map", o(ARB_texture_cube_map
), GLL
, 2001 },
266 { "GL_EXT_texture_edge_clamp", o(dummy_true
), GLL
, 1997 },
267 { "GL_EXT_texture_env_add", o(dummy_true
), GLL
, 1999 },
268 { "GL_EXT_texture_env_combine", o(dummy_true
), GLL
, 2000 },
269 { "GL_EXT_texture_env_dot3", o(EXT_texture_env_dot3
), GLL
, 2000 },
270 { "GL_EXT_texture_filter_anisotropic", o(EXT_texture_filter_anisotropic
), GL
| ES1
| ES2
, 1999 },
271 { "GL_EXT_texture_format_BGRA8888", o(dummy_true
), ES1
| ES2
, 2005 },
272 { "GL_EXT_texture_rg", o(ARB_texture_rg
), ES2
, 2011 },
273 { "GL_EXT_read_format_bgra", o(dummy_true
), ES1
| ES2
, 2009 },
274 { "GL_EXT_texture_integer", o(EXT_texture_integer
), GL
, 2006 },
275 { "GL_EXT_texture_lod_bias", o(dummy_true
), GLL
| ES1
, 1999 },
276 { "GL_EXT_texture_mirror_clamp", o(EXT_texture_mirror_clamp
), GL
, 2004 },
277 { "GL_EXT_texture_object", o(dummy_true
), GLL
, 1995 },
278 { "GL_EXT_texture", o(dummy_true
), GLL
, 1996 },
279 { "GL_EXT_texture_rectangle", o(NV_texture_rectangle
), GLL
, 2004 },
280 { "GL_EXT_texture_shared_exponent", o(EXT_texture_shared_exponent
), GL
, 2004 },
281 { "GL_EXT_texture_snorm", o(EXT_texture_snorm
), GL
, 2009 },
282 { "GL_EXT_texture_sRGB", o(EXT_texture_sRGB
), GL
, 2004 },
283 { "GL_EXT_texture_sRGB_decode", o(EXT_texture_sRGB_decode
), GL
, 2006 },
284 { "GL_EXT_texture_swizzle", o(EXT_texture_swizzle
), GL
, 2008 },
285 { "GL_EXT_texture_type_2_10_10_10_REV", o(dummy_true
), ES2
, 2008 },
286 { "GL_EXT_timer_query", o(EXT_timer_query
), GL
, 2006 },
287 { "GL_EXT_transform_feedback", o(EXT_transform_feedback
), GL
, 2011 },
288 { "GL_EXT_unpack_subimage", o(dummy_true
), ES2
, 2011 },
289 { "GL_EXT_vertex_array_bgra", o(EXT_vertex_array_bgra
), GL
, 2008 },
290 { "GL_EXT_vertex_array", o(dummy_true
), GLL
, 1995 },
291 { "GL_EXT_color_buffer_float", o(dummy_true
), ES3
, 2013 },
294 { "GL_OES_blend_equation_separate", o(EXT_blend_equation_separate
), ES1
, 2009 },
295 { "GL_OES_blend_func_separate", o(EXT_blend_func_separate
), ES1
, 2009 },
296 { "GL_OES_blend_subtract", o(dummy_true
), ES1
, 2009 },
297 { "GL_OES_byte_coordinates", o(dummy_true
), ES1
, 2002 },
298 { "GL_OES_compressed_ETC1_RGB8_texture", o(OES_compressed_ETC1_RGB8_texture
), ES1
| ES2
, 2005 },
299 { "GL_OES_compressed_paletted_texture", o(dummy_true
), ES1
, 2003 },
300 { "GL_OES_depth24", o(dummy_true
), ES1
| ES2
, 2005 },
301 { "GL_OES_depth32", o(dummy_false
), DISABLE
, 2005 },
302 { "GL_OES_depth_texture", o(ARB_depth_texture
), ES2
, 2006 },
303 { "GL_OES_depth_texture_cube_map", o(OES_depth_texture_cube_map
), ES2
, 2012 },
304 { "GL_OES_draw_texture", o(OES_draw_texture
), ES1
, 2004 },
305 { "GL_OES_EGL_sync", o(dummy_true
), ES1
| ES2
, 2010 },
306 /* FIXME: Mesa expects GL_OES_EGL_image to be available in OpenGL contexts. */
307 { "GL_OES_EGL_image", o(OES_EGL_image
), GL
| ES1
| ES2
, 2006 },
308 { "GL_OES_EGL_image_external", o(OES_EGL_image_external
), ES1
| ES2
, 2010 },
309 { "GL_OES_element_index_uint", o(dummy_true
), ES1
| ES2
, 2005 },
310 { "GL_OES_fbo_render_mipmap", o(dummy_true
), ES1
| ES2
, 2005 },
311 { "GL_OES_fixed_point", o(dummy_true
), ES1
, 2002 },
312 { "GL_OES_framebuffer_object", o(dummy_true
), ES1
, 2005 },
313 { "GL_OES_get_program_binary", o(dummy_true
), ES2
, 2008 },
314 { "GL_OES_mapbuffer", o(dummy_true
), ES1
| ES2
, 2005 },
315 { "GL_OES_packed_depth_stencil", o(dummy_true
), ES1
| ES2
, 2007 },
316 { "GL_OES_point_size_array", o(dummy_true
), ES1
, 2004 },
317 { "GL_OES_point_sprite", o(ARB_point_sprite
), ES1
, 2004 },
318 { "GL_OES_query_matrix", o(dummy_true
), ES1
, 2003 },
319 { "GL_OES_read_format", o(dummy_true
), GL
| ES1
, 2003 },
320 { "GL_OES_rgb8_rgba8", o(dummy_true
), ES1
| ES2
, 2005 },
321 { "GL_OES_single_precision", o(dummy_true
), ES1
, 2003 },
322 { "GL_OES_standard_derivatives", o(OES_standard_derivatives
), ES2
, 2005 },
323 { "GL_OES_stencil1", o(dummy_false
), DISABLE
, 2005 },
324 { "GL_OES_stencil4", o(dummy_false
), DISABLE
, 2005 },
325 { "GL_OES_stencil8", o(dummy_true
), ES1
| ES2
, 2005 },
326 { "GL_OES_stencil_wrap", o(dummy_true
), ES1
, 2002 },
327 { "GL_OES_surfaceless_context", o(dummy_true
), ES1
| ES2
, 2012 },
328 { "GL_OES_texture_3D", o(EXT_texture3D
), ES2
, 2005 },
329 { "GL_OES_texture_cube_map", o(ARB_texture_cube_map
), ES1
, 2007 },
330 { "GL_OES_texture_env_crossbar", o(ARB_texture_env_crossbar
), ES1
, 2005 },
331 { "GL_OES_texture_float", o(OES_texture_float
), ES2
, 2005 },
332 { "GL_OES_texture_float_linear", o(OES_texture_float_linear
), ES2
, 2005 },
333 { "GL_OES_texture_half_float", o(OES_texture_half_float
), ES2
, 2005 },
334 { "GL_OES_texture_half_float_linear", o(OES_texture_half_float_linear
), ES2
, 2005 },
335 { "GL_OES_texture_mirrored_repeat", o(dummy_true
), ES1
, 2005 },
336 { "GL_OES_texture_npot", o(ARB_texture_non_power_of_two
), ES1
| ES2
, 2005 },
337 { "GL_OES_vertex_array_object", o(dummy_true
), ES1
| ES2
, 2010 },
340 { "GL_KHR_debug", o(dummy_true
), GL
, 2012 },
341 { "GL_KHR_context_flush_control", o(dummy_true
), GL
| ES2
, 2014 },
343 /* Vendor extensions */
344 { "GL_3DFX_texture_compression_FXT1", o(TDFX_texture_compression_FXT1
), GL
, 1999 },
345 { "GL_AMD_conservative_depth", o(ARB_conservative_depth
), GL
, 2009 },
346 { "GL_AMD_draw_buffers_blend", o(ARB_draw_buffers_blend
), GL
, 2009 },
347 { "GL_AMD_performance_monitor", o(AMD_performance_monitor
), GL
, 2007 },
348 { "GL_AMD_pinned_memory", o(AMD_pinned_memory
), GL
, 2013 },
349 { "GL_AMD_seamless_cubemap_per_texture", o(AMD_seamless_cubemap_per_texture
), GL
, 2009 },
350 { "GL_AMD_shader_stencil_export", o(ARB_shader_stencil_export
), GL
, 2009 },
351 { "GL_AMD_shader_trinary_minmax", o(dummy_true
), GL
, 2012 },
352 { "GL_AMD_vertex_shader_layer", o(AMD_vertex_shader_layer
), GLC
, 2012 },
353 { "GL_AMD_vertex_shader_viewport_index", o(AMD_vertex_shader_viewport_index
), GLC
, 2012 },
354 { "GL_APPLE_object_purgeable", o(APPLE_object_purgeable
), GL
, 2006 },
355 { "GL_APPLE_packed_pixels", o(dummy_true
), GLL
, 2002 },
356 { "GL_APPLE_texture_max_level", o(dummy_true
), ES1
| ES2
, 2009 },
357 { "GL_APPLE_vertex_array_object", o(dummy_true
), GLL
, 2002 },
358 { "GL_ATI_blend_equation_separate", o(EXT_blend_equation_separate
), GL
, 2003 },
359 { "GL_ATI_draw_buffers", o(dummy_true
), GLL
, 2002 },
360 { "GL_ATI_fragment_shader", o(ATI_fragment_shader
), GLL
, 2001 },
361 { "GL_ATI_separate_stencil", o(ATI_separate_stencil
), GLL
, 2006 },
362 { "GL_ATI_texture_compression_3dc", o(ATI_texture_compression_3dc
), GL
, 2004 },
363 { "GL_ATI_texture_env_combine3", o(ATI_texture_env_combine3
), GLL
, 2002 },
364 { "GL_ATI_texture_float", o(ARB_texture_float
), GL
, 2002 },
365 { "GL_ATI_texture_mirror_once", o(ATI_texture_mirror_once
), GL
, 2006 },
366 { "GL_IBM_multimode_draw_arrays", o(dummy_true
), GL
, 1998 },
367 { "GL_IBM_rasterpos_clip", o(dummy_true
), GLL
, 1996 },
368 { "GL_IBM_texture_mirrored_repeat", o(dummy_true
), GLL
, 1998 },
369 { "GL_INGR_blend_func_separate", o(EXT_blend_func_separate
), GLL
, 1999 },
370 { "GL_INTEL_performance_query", o(INTEL_performance_query
), GL
| ES2
, 2013 },
371 { "GL_MESA_pack_invert", o(MESA_pack_invert
), GL
, 2002 },
372 { "GL_MESA_texture_signed_rgba", o(EXT_texture_snorm
), GL
, 2009 },
373 { "GL_MESA_window_pos", o(dummy_true
), GLL
, 2000 },
374 { "GL_MESA_ycbcr_texture", o(MESA_ycbcr_texture
), GL
, 2002 },
375 { "GL_NV_blend_square", o(dummy_true
), GLL
, 1999 },
376 { "GL_NV_conditional_render", o(NV_conditional_render
), GL
, 2008 },
377 { "GL_NV_depth_clamp", o(ARB_depth_clamp
), GL
, 2001 },
378 { "GL_NV_draw_buffers", o(dummy_true
), ES2
, 2011 },
379 { "GL_NV_fbo_color_attachments", o(dummy_true
), ES2
, 2010 },
380 { "GL_NV_fog_distance", o(NV_fog_distance
), GLL
, 2001 },
381 { "GL_NV_fragment_program_option", o(NV_fragment_program_option
), GLL
, 2005 },
382 { "GL_NV_light_max_exponent", o(dummy_true
), GLL
, 1999 },
383 { "GL_NV_packed_depth_stencil", o(dummy_true
), GL
, 2000 },
384 { "GL_NV_point_sprite", o(NV_point_sprite
), GL
, 2001 },
385 { "GL_NV_primitive_restart", o(NV_primitive_restart
), GLL
, 2002 },
386 { "GL_NV_read_buffer", o(dummy_true
), ES2
, 2011 },
387 { "GL_NV_texgen_reflection", o(dummy_true
), GLL
, 1999 },
388 { "GL_NV_texture_barrier", o(NV_texture_barrier
), GL
, 2009 },
389 { "GL_NV_texture_env_combine4", o(NV_texture_env_combine4
), GLL
, 1999 },
390 { "GL_NV_texture_rectangle", o(NV_texture_rectangle
), GLL
, 2000 },
391 { "GL_NV_vdpau_interop", o(NV_vdpau_interop
), GL
, 2010 },
392 { "GL_S3_s3tc", o(ANGLE_texture_compression_dxt
), GL
, 1999 },
393 { "GL_SGIS_generate_mipmap", o(dummy_true
), GLL
, 1997 },
394 { "GL_SGIS_texture_border_clamp", o(ARB_texture_border_clamp
), GLL
, 1997 },
395 { "GL_SGIS_texture_edge_clamp", o(dummy_true
), GLL
, 1997 },
396 { "GL_SGIS_texture_lod", o(dummy_true
), GLL
, 1997 },
397 { "GL_SUN_multi_draw_arrays", o(dummy_true
), GLL
, 1999 },
404 * Given an extension name, lookup up the corresponding member of struct
405 * gl_extensions and return that member's offset (in bytes). If the name is
406 * not found in the \c extension_table, return 0.
408 * \param name Name of extension.
409 * \return Offset of member in struct gl_extensions.
412 name_to_offset(const char* name
)
414 const struct extension
*i
;
419 for (i
= extension_table
; i
->name
!= 0; ++i
) {
420 if (strcmp(name
, i
->name
) == 0)
428 * Overrides extensions in \c ctx based on the values in
429 * _mesa_extension_override_enables and _mesa_extension_override_disables.
432 override_extensions_in_context(struct gl_context
*ctx
)
434 const struct extension
*i
;
435 const GLboolean
*enables
=
436 (GLboolean
*) &_mesa_extension_override_enables
;
437 const GLboolean
*disables
=
438 (GLboolean
*) &_mesa_extension_override_disables
;
439 GLboolean
*ctx_ext
= (GLboolean
*)&ctx
->Extensions
;
441 for (i
= extension_table
; i
->name
!= 0; ++i
) {
442 size_t offset
= i
->offset
;
443 assert(!enables
[offset
] || !disables
[offset
]);
444 if (enables
[offset
]) {
446 } else if (disables
[offset
]) {
454 * Enable all extensions suitable for a software-only renderer.
455 * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc.
458 _mesa_enable_sw_extensions(struct gl_context
*ctx
)
460 ctx
->Extensions
.ARB_depth_clamp
= GL_TRUE
;
461 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
462 ctx
->Extensions
.ARB_draw_elements_base_vertex
= GL_TRUE
;
463 ctx
->Extensions
.ARB_draw_instanced
= GL_TRUE
;
464 ctx
->Extensions
.ARB_explicit_attrib_location
= GL_TRUE
;
465 ctx
->Extensions
.ARB_fragment_coord_conventions
= GL_TRUE
;
466 ctx
->Extensions
.ARB_fragment_program
= GL_TRUE
;
467 ctx
->Extensions
.ARB_fragment_program_shadow
= GL_TRUE
;
468 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
469 ctx
->Extensions
.ARB_framebuffer_object
= GL_TRUE
;
470 ctx
->Extensions
.ARB_half_float_vertex
= GL_TRUE
;
471 ctx
->Extensions
.ARB_map_buffer_range
= GL_TRUE
;
472 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
473 ctx
->Extensions
.ARB_occlusion_query2
= GL_TRUE
;
474 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
475 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
476 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
;
477 ctx
->Extensions
.ARB_texture_compression_bptc
= GL_TRUE
;
478 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
479 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
480 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
481 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
482 #ifdef TEXTURE_FLOAT_ENABLED
483 ctx
->Extensions
.ARB_texture_float
= GL_TRUE
;
485 ctx
->Extensions
.ARB_texture_mirror_clamp_to_edge
= GL_TRUE
;
486 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
487 ctx
->Extensions
.ARB_texture_rg
= GL_TRUE
;
488 ctx
->Extensions
.ARB_texture_compression_rgtc
= GL_TRUE
;
489 ctx
->Extensions
.ARB_vertex_program
= GL_TRUE
;
490 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
491 ctx
->Extensions
.ARB_sync
= GL_TRUE
;
492 ctx
->Extensions
.APPLE_object_purgeable
= GL_TRUE
;
493 ctx
->Extensions
.ATI_fragment_shader
= GL_TRUE
;
494 ctx
->Extensions
.ATI_texture_compression_3dc
= GL_TRUE
;
495 ctx
->Extensions
.ATI_texture_env_combine3
= GL_TRUE
;
496 ctx
->Extensions
.ATI_texture_mirror_once
= GL_TRUE
;
497 ctx
->Extensions
.ATI_separate_stencil
= GL_TRUE
;
498 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
499 ctx
->Extensions
.EXT_blend_equation_separate
= GL_TRUE
;
500 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
501 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
502 ctx
->Extensions
.EXT_depth_bounds_test
= GL_TRUE
;
503 ctx
->Extensions
.EXT_draw_buffers2
= GL_TRUE
;
504 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
505 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
506 ctx
->Extensions
.EXT_provoking_vertex
= GL_TRUE
;
507 ctx
->Extensions
.EXT_stencil_two_side
= GL_TRUE
;
508 ctx
->Extensions
.EXT_texture_array
= GL_TRUE
;
509 ctx
->Extensions
.EXT_texture_compression_latc
= GL_TRUE
;
510 ctx
->Extensions
.EXT_texture_env_dot3
= GL_TRUE
;
511 ctx
->Extensions
.EXT_texture_filter_anisotropic
= GL_TRUE
;
512 ctx
->Extensions
.EXT_texture_mirror_clamp
= GL_TRUE
;
513 ctx
->Extensions
.EXT_texture_shared_exponent
= GL_TRUE
;
514 ctx
->Extensions
.EXT_texture_sRGB
= GL_TRUE
;
515 ctx
->Extensions
.EXT_texture_sRGB_decode
= GL_TRUE
;
516 ctx
->Extensions
.EXT_texture_swizzle
= GL_TRUE
;
517 /*ctx->Extensions.EXT_transform_feedback = GL_TRUE;*/
518 ctx
->Extensions
.EXT_vertex_array_bgra
= GL_TRUE
;
519 ctx
->Extensions
.MESA_pack_invert
= GL_TRUE
;
520 ctx
->Extensions
.MESA_ycbcr_texture
= GL_TRUE
;
521 ctx
->Extensions
.NV_conditional_render
= GL_TRUE
;
522 ctx
->Extensions
.NV_point_sprite
= GL_TRUE
;
523 ctx
->Extensions
.NV_texture_env_combine4
= GL_TRUE
;
524 ctx
->Extensions
.NV_texture_rectangle
= GL_TRUE
;
525 ctx
->Extensions
.EXT_gpu_program_parameters
= GL_TRUE
;
526 ctx
->Extensions
.OES_standard_derivatives
= GL_TRUE
;
527 ctx
->Extensions
.TDFX_texture_compression_FXT1
= GL_TRUE
;
528 if (ctx
->Mesa_DXTn
) {
529 ctx
->Extensions
.ANGLE_texture_compression_dxt
= GL_TRUE
;
530 ctx
->Extensions
.EXT_texture_compression_s3tc
= GL_TRUE
;
535 * Either enable or disable the named extension.
536 * \return offset of extensions withint `ext' or 0 if extension is not known
539 set_extension(struct gl_extensions
*ext
, const char *name
, GLboolean state
)
543 offset
= name_to_offset(name
);
544 if (offset
!= 0 && (offset
!= o(dummy_true
) || state
!= GL_FALSE
)) {
545 ((GLboolean
*) ext
)[offset
] = state
;
552 * \brief Apply the \c MESA_EXTENSION_OVERRIDE environment variable.
554 * \c MESA_EXTENSION_OVERRIDE is a space-separated list of extensions to
555 * enable or disable. The list is processed thus:
556 * - Enable recognized extension names that are prefixed with '+'.
557 * - Disable recognized extension names that are prefixed with '-'.
558 * - Enable recognized extension names that are not prefixed.
559 * - Collect unrecognized extension names in a new string.
561 * \c MESA_EXTENSION_OVERRIDE was previously parsed during
562 * _mesa_one_time_init_extension_overrides. We just use the results of that
563 * parsing in this function.
565 * \return Space-separated list of unrecognized extension names (which must
566 * be freed). Does not return \c NULL.
569 get_extension_override( struct gl_context
*ctx
)
571 override_extensions_in_context(ctx
);
573 if (cant_disable_extensions
!= NULL
) {
575 "Trying to disable permanently enabled extensions: %s",
576 cant_disable_extensions
);
579 if (extra_extensions
== NULL
) {
580 return calloc(1, sizeof(char));
582 _mesa_problem(ctx
, "Trying to enable unknown extensions: %s",
584 return strdup(extra_extensions
);
590 * \brief Free extra_extensions and cant_disable_extensions strings
592 * These strings are allocated early during the first context creation by
593 * _mesa_one_time_init_extension_overrides.
596 free_unknown_extensions_strings(void)
598 free(extra_extensions
);
599 free(cant_disable_extensions
);
604 * \brief Initialize extension override tables.
606 * This should be called one time early during first context initialization.
609 _mesa_one_time_init_extension_overrides(void)
611 const char *env_const
= getenv("MESA_EXTENSION_OVERRIDE");
617 atexit(free_unknown_extensions_strings
);
619 memset(&_mesa_extension_override_enables
, 0, sizeof(struct gl_extensions
));
620 memset(&_mesa_extension_override_disables
, 0, sizeof(struct gl_extensions
));
622 if (env_const
== NULL
) {
626 /* extra_exts: List of unrecognized extensions. */
627 extra_extensions
= calloc(ALIGN(strlen(env_const
) + 2, 4), sizeof(char));
628 cant_disable_extensions
= calloc(ALIGN(strlen(env_const
) + 2, 4), sizeof(char));
630 /* Copy env_const because strtok() is destructive. */
631 env
= strdup(env_const
);
633 if (env
== NULL
|| extra_extensions
== NULL
||
634 cant_disable_extensions
== NULL
) {
636 free(extra_extensions
);
637 free(cant_disable_extensions
);
641 for (ext
= strtok(env
, " "); ext
!= NULL
; ext
= strtok(NULL
, " ")) {
658 offset
= set_extension(&_mesa_extension_override_enables
, ext
, enable
);
659 if (offset
!= 0 && (offset
!= o(dummy_true
) || enable
!= GL_FALSE
)) {
660 ((GLboolean
*) &_mesa_extension_override_disables
)[offset
] = !enable
;
668 strcat(extra_extensions
, ext
);
669 strcat(extra_extensions
, " ");
670 } else if (offset
== o(dummy_true
)) {
671 strcat(cant_disable_extensions
, ext
);
672 strcat(cant_disable_extensions
, " ");
679 /* Remove trailing space, and free if unused. */
680 len
= strlen(extra_extensions
);
682 free(extra_extensions
);
683 extra_extensions
= NULL
;
684 } else if (extra_extensions
[len
- 1] == ' ') {
685 extra_extensions
[len
- 1] = '\0';
687 len
= strlen(cant_disable_extensions
);
689 free(cant_disable_extensions
);
690 cant_disable_extensions
= NULL
;
691 } else if (cant_disable_extensions
[len
- 1] == ' ') {
692 cant_disable_extensions
[len
- 1] = '\0';
698 * \brief Initialize extension tables and enable default extensions.
700 * This should be called during context initialization.
701 * Note: Sets gl_extensions.dummy_true to true.
704 _mesa_init_extensions(struct gl_extensions
*extensions
)
706 GLboolean
*base
= (GLboolean
*) extensions
;
707 GLboolean
*sentinel
= base
+ o(extension_sentinel
);
710 /* First, turn all extensions off. */
711 for (i
= base
; i
!= sentinel
; ++i
)
714 /* Then, selectively turn default extensions on. */
715 extensions
->dummy_true
= GL_TRUE
;
716 extensions
->EXT_texture3D
= GL_TRUE
;
720 typedef unsigned short extension_index
;
724 * Compare two entries of the extensions table. Sorts first by year,
727 * Arguments are indices into extension_table.
730 extension_compare(const void *p1
, const void *p2
)
732 extension_index i1
= * (const extension_index
*) p1
;
733 extension_index i2
= * (const extension_index
*) p2
;
734 const struct extension
*e1
= &extension_table
[i1
];
735 const struct extension
*e2
= &extension_table
[i2
];
738 res
= (int)e1
->year
- (int)e2
->year
;
741 res
= strcmp(e1
->name
, e2
->name
);
749 * Construct the GL_EXTENSIONS string. Called the first time that
750 * glGetString(GL_EXTENSIONS) is called.
753 _mesa_make_extension_string(struct gl_context
*ctx
)
755 /* The extension string. */
757 /* Length of extension string. */
759 /* Number of extensions */
761 /* Indices of the extensions sorted by year */
762 extension_index
*extension_indices
;
763 /* String of extra extensions. */
764 char *extra_extensions
= get_extension_override(ctx
);
765 GLboolean
*base
= (GLboolean
*) &ctx
->Extensions
;
766 const struct extension
*i
;
768 unsigned maxYear
= ~0;
769 unsigned api_set
= (1 << ctx
->API
);
770 if (_mesa_is_gles3(ctx
))
773 /* Check if the MESA_EXTENSION_MAX_YEAR env var is set */
775 const char *env
= getenv("MESA_EXTENSION_MAX_YEAR");
778 _mesa_debug(ctx
, "Note: limiting GL extensions to %u or earlier\n",
783 /* Compute length of the extension string. */
785 for (i
= extension_table
; i
->name
!= 0; ++i
) {
786 if (base
[i
->offset
] &&
787 i
->year
<= maxYear
&&
788 (i
->api_set
& api_set
)) {
789 length
+= strlen(i
->name
) + 1; /* +1 for space */
793 if (extra_extensions
!= NULL
)
794 length
+= 1 + strlen(extra_extensions
); /* +1 for space */
796 exts
= calloc(ALIGN(length
+ 1, 4), sizeof(char));
798 free(extra_extensions
);
802 extension_indices
= malloc(count
* sizeof(extension_index
));
803 if (extension_indices
== NULL
) {
805 free(extra_extensions
);
809 /* Sort extensions in chronological order because certain old applications
810 * (e.g., Quake3 demo) store the extension list in a static size buffer so
811 * chronologically order ensure that the extensions that such applications
812 * expect will fit into that buffer.
815 for (i
= extension_table
; i
->name
!= 0; ++i
) {
816 if (base
[i
->offset
] &&
817 i
->year
<= maxYear
&&
818 (i
->api_set
& api_set
)) {
819 extension_indices
[j
++] = i
- extension_table
;
823 qsort(extension_indices
, count
,
824 sizeof *extension_indices
, extension_compare
);
826 /* Build the extension string.*/
827 for (j
= 0; j
< count
; ++j
) {
828 i
= &extension_table
[extension_indices
[j
]];
829 assert(base
[i
->offset
] && (i
->api_set
& api_set
));
830 strcat(exts
, i
->name
);
833 free(extension_indices
);
834 if (extra_extensions
!= 0) {
835 strcat(exts
, extra_extensions
);
836 free(extra_extensions
);
839 return (GLubyte
*) exts
;
843 * Return number of enabled extensions.
846 _mesa_get_extension_count(struct gl_context
*ctx
)
849 const struct extension
*i
;
850 unsigned api_set
= (1 << ctx
->API
);
851 if (_mesa_is_gles3(ctx
))
854 /* only count once */
855 if (ctx
->Extensions
.Count
!= 0)
856 return ctx
->Extensions
.Count
;
858 base
= (GLboolean
*) &ctx
->Extensions
;
859 for (i
= extension_table
; i
->name
!= 0; ++i
) {
860 if (base
[i
->offset
] && (i
->api_set
& api_set
)) {
861 ctx
->Extensions
.Count
++;
864 return ctx
->Extensions
.Count
;
868 * Return name of i-th enabled extension
871 _mesa_get_enabled_extension(struct gl_context
*ctx
, GLuint index
)
873 const GLboolean
*base
;
875 const struct extension
*i
;
876 unsigned api_set
= (1 << ctx
->API
);
877 if (_mesa_is_gles3(ctx
))
880 base
= (GLboolean
*) &ctx
->Extensions
;
882 for (i
= extension_table
; i
->name
!= 0; ++i
) {
883 if (base
[i
->offset
] && (i
->api_set
& api_set
)) {
885 return (const GLubyte
*) i
->name
;