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"
40 #define ALIGN(value, alignment) (((value) + alignment - 1) & ~(alignment - 1))
45 ES1
= 1 << API_OPENGLES
,
46 ES2
= 1 << API_OPENGLES2
,
50 * \brief An element of the \c extension_table.
53 /** Name of extension, such as "GL_ARB_depth_clamp". */
56 /** Offset (in bytes) of the corresponding member in struct gl_extensions. */
59 /** Set of API's in which the extension exists, as a bitset. */
62 /** Year the extension was proposed or approved. Used to sort the
63 * extension string chronologically. */
69 * Given a member \c x of struct gl_extensions, return offset of
72 #define o(x) offsetof(struct gl_extensions, x)
76 * \brief Table of supported OpenGL extensions for all API's.
78 static const struct extension extension_table
[] = {
80 { "GL_ARB_ES2_compatibility", o(ARB_ES2_compatibility
), GL
, 2009 },
81 { "GL_ARB_base_instance", o(ARB_base_instance
), GL
, 2011 },
82 { "GL_ARB_blend_func_extended", o(ARB_blend_func_extended
), GL
, 2009 },
83 { "GL_ARB_color_buffer_float", o(ARB_color_buffer_float
), GL
, 2004 },
84 { "GL_ARB_copy_buffer", o(ARB_copy_buffer
), GL
, 2008 },
85 { "GL_ARB_conservative_depth", o(ARB_conservative_depth
), GL
, 2011 },
86 { "GL_ARB_debug_output", o(dummy_true
), GL
, 2009 },
87 { "GL_ARB_depth_buffer_float", o(ARB_depth_buffer_float
), GL
, 2008 },
88 { "GL_ARB_depth_clamp", o(ARB_depth_clamp
), GL
, 2003 },
89 { "GL_ARB_depth_texture", o(ARB_depth_texture
), GL
, 2001 },
90 { "GL_ARB_draw_buffers", o(dummy_true
), GL
, 2002 },
91 { "GL_ARB_draw_buffers_blend", o(ARB_draw_buffers_blend
), GL
, 2009 },
92 { "GL_ARB_draw_elements_base_vertex", o(ARB_draw_elements_base_vertex
), GL
, 2009 },
93 { "GL_ARB_draw_instanced", o(ARB_draw_instanced
), GL
, 2008 },
94 { "GL_ARB_explicit_attrib_location", o(ARB_explicit_attrib_location
), GL
, 2009 },
95 { "GL_ARB_fragment_coord_conventions", o(ARB_fragment_coord_conventions
), GL
, 2009 },
96 { "GL_ARB_fragment_program", o(ARB_fragment_program
), GL
, 2002 },
97 { "GL_ARB_fragment_program_shadow", o(ARB_fragment_program_shadow
), GL
, 2003 },
98 { "GL_ARB_fragment_shader", o(ARB_fragment_shader
), GL
, 2002 },
99 { "GL_ARB_framebuffer_object", o(ARB_framebuffer_object
), GL
, 2005 },
100 { "GL_ARB_framebuffer_sRGB", o(EXT_framebuffer_sRGB
), GL
, 1998 },
101 { "GL_ARB_half_float_pixel", o(ARB_half_float_pixel
), GL
, 2003 },
102 { "GL_ARB_half_float_vertex", o(ARB_half_float_vertex
), GL
, 2008 },
103 { "GL_ARB_instanced_arrays", o(ARB_instanced_arrays
), GL
, 2008 },
104 { "GL_ARB_map_buffer_range", o(ARB_map_buffer_range
), GL
, 2008 },
105 { "GL_ARB_multisample", o(dummy_true
), GL
, 1994 },
106 { "GL_ARB_multitexture", o(dummy_true
), GL
, 1998 },
107 { "GL_ARB_occlusion_query2", o(ARB_occlusion_query2
), GL
, 2003 },
108 { "GL_ARB_occlusion_query", o(ARB_occlusion_query
), GL
, 2001 },
109 { "GL_ARB_pixel_buffer_object", o(EXT_pixel_buffer_object
), GL
, 2004 },
110 { "GL_ARB_point_parameters", o(EXT_point_parameters
), GL
, 1997 },
111 { "GL_ARB_point_sprite", o(ARB_point_sprite
), GL
, 2003 },
112 { "GL_ARB_provoking_vertex", o(EXT_provoking_vertex
), GL
, 2009 },
113 { "GL_ARB_robustness", o(dummy_true
), GL
, 2010 },
114 { "GL_ARB_sampler_objects", o(ARB_sampler_objects
), GL
, 2009 },
115 { "GL_ARB_seamless_cube_map", o(ARB_seamless_cube_map
), GL
, 2009 },
116 { "GL_ARB_shader_bit_encoding", o(ARB_shader_bit_encoding
), GL
, 2010 },
117 { "GL_ARB_shader_objects", o(ARB_shader_objects
), GL
, 2002 },
118 { "GL_ARB_shader_stencil_export", o(ARB_shader_stencil_export
), GL
, 2009 },
119 { "GL_ARB_shader_texture_lod", o(ARB_shader_texture_lod
), GL
, 2009 },
120 { "GL_ARB_shading_language_100", o(ARB_shading_language_100
), GL
, 2003 },
121 { "GL_ARB_shadow_ambient", o(ARB_shadow_ambient
), GL
, 2001 },
122 { "GL_ARB_shadow", o(ARB_shadow
), GL
, 2001 },
123 { "GL_ARB_sync", o(ARB_sync
), GL
, 2003 },
124 { "GL_ARB_texture_border_clamp", o(ARB_texture_border_clamp
), GL
, 2000 },
125 { "GL_ARB_texture_buffer_object", o(ARB_texture_buffer_object
), GL
, 2008 },
126 { "GL_ARB_texture_compression", o(dummy_true
), GL
, 2000 },
127 { "GL_ARB_texture_compression_rgtc", o(ARB_texture_compression_rgtc
), GL
, 2004 },
128 { "GL_ARB_texture_cube_map", o(ARB_texture_cube_map
), GL
, 1999 },
129 { "GL_ARB_texture_env_add", o(dummy_true
), GL
, 1999 },
130 { "GL_ARB_texture_env_combine", o(ARB_texture_env_combine
), GL
, 2001 },
131 { "GL_ARB_texture_env_crossbar", o(ARB_texture_env_crossbar
), GL
, 2001 },
132 { "GL_ARB_texture_env_dot3", o(ARB_texture_env_dot3
), GL
, 2001 },
133 { "GL_ARB_texture_float", o(ARB_texture_float
), GL
, 2004 },
134 { "GL_ARB_texture_mirrored_repeat", o(dummy_true
), GL
, 2001 },
135 { "GL_ARB_texture_multisample", o(ARB_texture_multisample
), GL
, 2009 },
136 { "GL_ARB_texture_non_power_of_two", o(ARB_texture_non_power_of_two
), GL
, 2003 },
137 { "GL_ARB_texture_rectangle", o(NV_texture_rectangle
), GL
, 2004 },
138 { "GL_ARB_texture_rgb10_a2ui", o(ARB_texture_rgb10_a2ui
), GL
, 2009 },
139 { "GL_ARB_texture_rg", o(ARB_texture_rg
), GL
, 2008 },
140 { "GL_ARB_texture_storage", o(ARB_texture_storage
), GL
, 2011 },
141 { "GL_ARB_texture_swizzle", o(EXT_texture_swizzle
), GL
, 2008 },
142 { "GL_ARB_timer_query", o(ARB_timer_query
), GL
, 2010 },
143 { "GL_ARB_transform_feedback2", o(ARB_transform_feedback2
), GL
, 2010 },
144 { "GL_ARB_transform_feedback3", o(ARB_transform_feedback3
), GL
, 2010 },
145 { "GL_ARB_transpose_matrix", o(ARB_transpose_matrix
), GL
, 1999 },
146 { "GL_ARB_uniform_buffer_object", o(ARB_uniform_buffer_object
), GL
, 2009 },
147 { "GL_ARB_vertex_array_bgra", o(EXT_vertex_array_bgra
), GL
, 2008 },
148 { "GL_ARB_vertex_array_object", o(ARB_vertex_array_object
), GL
, 2006 },
149 { "GL_ARB_vertex_buffer_object", o(dummy_true
), GL
, 2003 },
150 { "GL_ARB_vertex_program", o(ARB_vertex_program
), GL
, 2002 },
151 { "GL_ARB_vertex_shader", o(ARB_vertex_shader
), GL
, 2002 },
152 { "GL_ARB_vertex_type_2_10_10_10_rev", o(ARB_vertex_type_2_10_10_10_rev
), GL
, 2009 },
153 { "GL_ARB_window_pos", o(ARB_window_pos
), GL
, 2001 },
155 { "GL_EXT_abgr", o(dummy_true
), GL
, 1995 },
156 { "GL_EXT_bgra", o(dummy_true
), GL
, 1995 },
157 { "GL_EXT_blend_color", o(EXT_blend_color
), GL
, 1995 },
158 { "GL_EXT_blend_equation_separate", o(EXT_blend_equation_separate
), GL
, 2003 },
159 { "GL_EXT_blend_func_separate", o(EXT_blend_func_separate
), GL
, 1999 },
160 { "GL_EXT_blend_minmax", o(EXT_blend_minmax
), GL
| ES1
| ES2
, 1995 },
161 { "GL_EXT_blend_subtract", o(dummy_true
), GL
, 1995 },
162 { "GL_EXT_clip_volume_hint", o(EXT_clip_volume_hint
), GL
, 1996 },
163 { "GL_EXT_compiled_vertex_array", o(EXT_compiled_vertex_array
), GL
, 1996 },
164 { "GL_EXT_copy_texture", o(dummy_true
), GL
, 1995 },
165 { "GL_EXT_depth_bounds_test", o(EXT_depth_bounds_test
), GL
, 2002 },
166 { "GL_EXT_draw_buffers2", o(EXT_draw_buffers2
), GL
, 2006 },
167 { "GL_EXT_draw_instanced", o(ARB_draw_instanced
), GL
, 2006 },
168 { "GL_EXT_draw_range_elements", o(EXT_draw_range_elements
), GL
, 1997 },
169 { "GL_EXT_fog_coord", o(EXT_fog_coord
), GL
, 1999 },
170 { "GL_EXT_framebuffer_blit", o(EXT_framebuffer_blit
), GL
, 2005 },
171 { "GL_EXT_framebuffer_multisample", o(EXT_framebuffer_multisample
), GL
, 2005 },
172 { "GL_EXT_framebuffer_object", o(EXT_framebuffer_object
), GL
, 2000 },
173 { "GL_EXT_framebuffer_sRGB", o(EXT_framebuffer_sRGB
), GL
, 1998 },
174 { "GL_EXT_gpu_program_parameters", o(EXT_gpu_program_parameters
), GL
, 2006 },
175 { "GL_EXT_gpu_shader4", o(EXT_gpu_shader4
), GL
, 2006 },
176 { "GL_EXT_multi_draw_arrays", o(dummy_true
), GL
| ES1
| ES2
, 1999 },
177 { "GL_EXT_packed_depth_stencil", o(EXT_packed_depth_stencil
), GL
, 2005 },
178 { "GL_EXT_packed_float", o(EXT_packed_float
), GL
, 2004 },
179 { "GL_EXT_packed_pixels", o(EXT_packed_pixels
), GL
, 1997 },
180 { "GL_EXT_pixel_buffer_object", o(EXT_pixel_buffer_object
), GL
, 2004 },
181 { "GL_EXT_point_parameters", o(EXT_point_parameters
), GL
, 1997 },
182 { "GL_EXT_polygon_offset", o(dummy_true
), GL
, 1995 },
183 { "GL_EXT_provoking_vertex", o(EXT_provoking_vertex
), GL
, 2009 },
184 { "GL_EXT_rescale_normal", o(EXT_rescale_normal
), GL
, 1997 },
185 { "GL_EXT_secondary_color", o(EXT_secondary_color
), GL
, 1999 },
186 { "GL_EXT_separate_shader_objects", o(EXT_separate_shader_objects
), GL
, 2008 },
187 { "GL_EXT_separate_specular_color", o(EXT_separate_specular_color
), GL
, 1997 },
188 { "GL_EXT_shadow_funcs", o(EXT_shadow_funcs
), GL
, 2002 },
189 { "GL_EXT_stencil_two_side", o(EXT_stencil_two_side
), GL
, 2001 },
190 { "GL_EXT_stencil_wrap", o(dummy_true
), GL
, 2002 },
191 { "GL_EXT_subtexture", o(dummy_true
), GL
, 1995 },
192 { "GL_EXT_texture3D", o(EXT_texture3D
), GL
, 1996 },
193 { "GL_EXT_texture_array", o(EXT_texture_array
), GL
, 2006 },
194 { "GL_EXT_texture_compression_dxt1", o(EXT_texture_compression_s3tc
), GL
| ES1
| ES2
, 2004 },
195 { "GL_EXT_texture_compression_latc", o(EXT_texture_compression_latc
), GL
, 2006 },
196 { "GL_EXT_texture_compression_rgtc", o(ARB_texture_compression_rgtc
), GL
, 2004 },
197 { "GL_EXT_texture_compression_s3tc", o(EXT_texture_compression_s3tc
), GL
, 2000 },
198 { "GL_EXT_texture_cube_map", o(ARB_texture_cube_map
), GL
, 2001 },
199 { "GL_EXT_texture_edge_clamp", o(dummy_true
), GL
, 1997 },
200 { "GL_EXT_texture_env_add", o(dummy_true
), GL
, 1999 },
201 { "GL_EXT_texture_env_combine", o(dummy_true
), GL
, 2000 },
202 { "GL_EXT_texture_env_dot3", o(EXT_texture_env_dot3
), GL
, 2000 },
203 { "GL_EXT_texture_filter_anisotropic", o(EXT_texture_filter_anisotropic
), GL
| ES1
| ES2
, 1999 },
204 { "GL_EXT_texture_format_BGRA8888", o(dummy_true
), ES1
| ES2
, 2005 },
205 { "GL_EXT_texture_rg", o(ARB_texture_rg
), ES2
, 2011 },
206 { "GL_EXT_read_format_bgra", o(dummy_true
), ES1
| ES2
, 2009 },
207 { "GL_EXT_texture_integer", o(EXT_texture_integer
), GL
, 2006 },
208 { "GL_EXT_texture_lod_bias", o(dummy_true
), GL
| ES1
, 1999 },
209 { "GL_EXT_texture_mirror_clamp", o(EXT_texture_mirror_clamp
), GL
, 2004 },
210 { "GL_EXT_texture_object", o(dummy_true
), GL
, 1995 },
211 { "GL_EXT_texture", o(dummy_true
), GL
, 1996 },
212 { "GL_EXT_texture_rectangle", o(NV_texture_rectangle
), GL
, 2004 },
213 { "GL_EXT_texture_shared_exponent", o(EXT_texture_shared_exponent
), GL
, 2004 },
214 { "GL_EXT_texture_snorm", o(EXT_texture_snorm
), GL
, 2009 },
215 { "GL_EXT_texture_sRGB", o(EXT_texture_sRGB
), GL
, 2004 },
216 { "GL_EXT_texture_sRGB_decode", o(EXT_texture_sRGB_decode
), GL
, 2006 },
217 { "GL_EXT_texture_swizzle", o(EXT_texture_swizzle
), GL
, 2008 },
218 { "GL_EXT_texture_type_2_10_10_10_REV", o(dummy_true
), ES2
, 2008 },
219 { "GL_EXT_timer_query", o(EXT_timer_query
), GL
, 2006 },
220 { "GL_EXT_transform_feedback", o(EXT_transform_feedback
), GL
, 2011 },
221 { "GL_EXT_unpack_subimage", o(dummy_true
), ES2
, 2011 },
222 { "GL_EXT_vertex_array_bgra", o(EXT_vertex_array_bgra
), GL
, 2008 },
223 { "GL_EXT_vertex_array", o(dummy_true
), GL
, 1995 },
226 { "GL_OES_blend_equation_separate", o(EXT_blend_equation_separate
), ES1
, 2009 },
227 { "GL_OES_blend_func_separate", o(EXT_blend_func_separate
), ES1
, 2009 },
228 { "GL_OES_blend_subtract", o(dummy_true
), ES1
, 2009 },
229 { "GL_OES_byte_coordinates", o(dummy_true
), ES1
, 2002 },
230 { "GL_OES_compressed_ETC1_RGB8_texture", o(OES_compressed_ETC1_RGB8_texture
), ES1
| ES2
, 2005 },
231 { "GL_OES_compressed_paletted_texture", o(dummy_true
), ES1
, 2003 },
232 { "GL_OES_depth24", o(EXT_framebuffer_object
), ES1
| ES2
, 2005 },
233 { "GL_OES_depth32", o(dummy_false
), DISABLE
, 2005 },
234 { "GL_OES_depth_texture", o(ARB_depth_texture
), ES2
, 2006 },
235 #if FEATURE_OES_draw_texture
236 { "GL_OES_draw_texture", o(OES_draw_texture
), ES1
, 2004 },
238 #if FEATURE_OES_EGL_image
239 /* FIXME: Mesa expects GL_OES_EGL_image to be available in OpenGL contexts. */
240 { "GL_OES_EGL_image", o(OES_EGL_image
), GL
| ES1
| ES2
, 2006 },
241 { "GL_OES_EGL_image_external", o(OES_EGL_image_external
), ES1
| ES2
, 2010 },
243 { "GL_OES_element_index_uint", o(dummy_true
), ES1
| ES2
, 2005 },
244 { "GL_OES_fbo_render_mipmap", o(EXT_framebuffer_object
), ES1
| ES2
, 2005 },
245 { "GL_OES_fixed_point", o(dummy_true
), ES1
, 2002 },
246 { "GL_OES_framebuffer_object", o(EXT_framebuffer_object
), ES1
, 2005 },
247 { "GL_OES_mapbuffer", o(dummy_true
), ES1
| ES2
, 2005 },
248 { "GL_OES_matrix_get", o(dummy_true
), ES1
, 2004 },
249 { "GL_OES_packed_depth_stencil", o(EXT_packed_depth_stencil
), ES1
| ES2
, 2007 },
250 { "GL_OES_point_size_array", o(dummy_true
), ES1
, 2004 },
251 { "GL_OES_point_sprite", o(ARB_point_sprite
), ES1
, 2004 },
252 { "GL_OES_query_matrix", o(dummy_true
), ES1
, 2003 },
253 { "GL_OES_read_format", o(dummy_true
), GL
| ES1
, 2003 },
254 { "GL_OES_rgb8_rgba8", o(EXT_framebuffer_object
), ES1
| ES2
, 2005 },
255 { "GL_OES_single_precision", o(dummy_true
), ES1
, 2003 },
256 { "GL_OES_standard_derivatives", o(OES_standard_derivatives
), ES2
, 2005 },
257 { "GL_OES_stencil1", o(dummy_false
), DISABLE
, 2005 },
258 { "GL_OES_stencil4", o(dummy_false
), DISABLE
, 2005 },
259 { "GL_OES_stencil8", o(EXT_framebuffer_object
), ES1
| ES2
, 2005 },
260 { "GL_OES_stencil_wrap", o(dummy_true
), ES1
, 2002 },
261 { "GL_OES_texture_3D", o(EXT_texture3D
), ES2
, 2005 },
262 { "GL_OES_texture_cube_map", o(ARB_texture_cube_map
), ES1
, 2007 },
263 { "GL_OES_texture_env_crossbar", o(ARB_texture_env_crossbar
), ES1
, 2005 },
264 { "GL_OES_texture_mirrored_repeat", o(dummy_true
), ES1
, 2005 },
265 { "GL_OES_texture_npot", o(ARB_texture_non_power_of_two
), ES2
, 2005 },
267 /* Vendor extensions */
268 { "GL_3DFX_texture_compression_FXT1", o(TDFX_texture_compression_FXT1
), GL
, 1999 },
269 { "GL_AMD_conservative_depth", o(ARB_conservative_depth
), GL
, 2009 },
270 { "GL_AMD_draw_buffers_blend", o(ARB_draw_buffers_blend
), GL
, 2009 },
271 { "GL_AMD_seamless_cubemap_per_texture", o(AMD_seamless_cubemap_per_texture
), GL
, 2009 },
272 { "GL_AMD_shader_stencil_export", o(ARB_shader_stencil_export
), GL
, 2009 },
273 { "GL_APPLE_object_purgeable", o(APPLE_object_purgeable
), GL
, 2006 },
274 { "GL_APPLE_packed_pixels", o(APPLE_packed_pixels
), GL
, 2002 },
275 { "GL_APPLE_vertex_array_object", o(APPLE_vertex_array_object
), GL
, 2002 },
276 { "GL_ATI_blend_equation_separate", o(EXT_blend_equation_separate
), GL
, 2003 },
277 { "GL_ATI_draw_buffers", o(dummy_true
), GL
, 2002 },
278 { "GL_ATI_envmap_bumpmap", o(ATI_envmap_bumpmap
), GL
, 2001 },
279 { "GL_ATI_fragment_shader", o(ATI_fragment_shader
), GL
, 2001 },
280 { "GL_ATI_separate_stencil", o(ATI_separate_stencil
), GL
, 2006 },
281 { "GL_ATI_texture_compression_3dc", o(ATI_texture_compression_3dc
), GL
, 2004 },
282 { "GL_ATI_texture_env_combine3", o(ATI_texture_env_combine3
), GL
, 2002 },
283 { "GL_ATI_texture_float", o(ARB_texture_float
), GL
, 2002 },
284 { "GL_ATI_texture_mirror_once", o(ATI_texture_mirror_once
), GL
, 2006 },
285 { "GL_IBM_multimode_draw_arrays", o(IBM_multimode_draw_arrays
), GL
, 1998 },
286 { "GL_IBM_rasterpos_clip", o(IBM_rasterpos_clip
), GL
, 1996 },
287 { "GL_IBM_texture_mirrored_repeat", o(dummy_true
), GL
, 1998 },
288 { "GL_INGR_blend_func_separate", o(EXT_blend_func_separate
), GL
, 1999 },
289 { "GL_MESA_pack_invert", o(MESA_pack_invert
), GL
, 2002 },
290 { "GL_MESA_resize_buffers", o(MESA_resize_buffers
), GL
, 1999 },
291 { "GL_MESA_texture_array", o(MESA_texture_array
), GL
, 2007 },
292 { "GL_MESA_texture_signed_rgba", o(EXT_texture_snorm
), GL
, 2009 },
293 { "GL_MESA_window_pos", o(ARB_window_pos
), GL
, 2000 },
294 { "GL_MESA_ycbcr_texture", o(MESA_ycbcr_texture
), GL
, 2002 },
295 { "GL_NV_blend_square", o(NV_blend_square
), GL
, 1999 },
296 { "GL_NV_conditional_render", o(NV_conditional_render
), GL
, 2008 },
297 { "GL_NV_depth_clamp", o(ARB_depth_clamp
), GL
, 2001 },
298 { "GL_NV_draw_buffers", o(dummy_true
), ES2
, 2011 },
299 { "GL_NV_fbo_color_attachments", o(EXT_framebuffer_object
), ES2
, 2010 },
300 { "GL_NV_fog_distance", o(NV_fog_distance
), GL
, 2001 },
301 { "GL_NV_fragment_program", o(NV_fragment_program
), GL
, 2001 },
302 { "GL_NV_fragment_program_option", o(NV_fragment_program_option
), GL
, 2005 },
303 { "GL_NV_light_max_exponent", o(NV_light_max_exponent
), GL
, 1999 },
304 { "GL_NV_packed_depth_stencil", o(EXT_packed_depth_stencil
), GL
, 2000 },
305 { "GL_NV_point_sprite", o(NV_point_sprite
), GL
, 2001 },
306 { "GL_NV_primitive_restart", o(NV_primitive_restart
), GL
, 2002 },
307 { "GL_NV_read_buffer", o(dummy_true
), ES2
, 2011 },
308 { "GL_NV_texgen_reflection", o(NV_texgen_reflection
), GL
, 1999 },
309 { "GL_NV_texture_barrier", o(NV_texture_barrier
), GL
, 2009 },
310 { "GL_NV_texture_env_combine4", o(NV_texture_env_combine4
), GL
, 1999 },
311 { "GL_NV_texture_rectangle", o(NV_texture_rectangle
), GL
, 2000 },
312 { "GL_NV_vertex_program1_1", o(NV_vertex_program1_1
), GL
, 2001 },
313 { "GL_NV_vertex_program", o(NV_vertex_program
), GL
, 2000 },
314 { "GL_S3_s3tc", o(S3_s3tc
), GL
, 1999 },
315 { "GL_SGIS_generate_mipmap", o(dummy_true
), GL
, 1997 },
316 { "GL_SGIS_texture_border_clamp", o(ARB_texture_border_clamp
), GL
, 1997 },
317 { "GL_SGIS_texture_edge_clamp", o(dummy_true
), GL
, 1997 },
318 { "GL_SGIS_texture_lod", o(SGIS_texture_lod
), GL
, 1997 },
319 { "GL_SUN_multi_draw_arrays", o(dummy_true
), GL
, 1999 },
326 * Given an extension name, lookup up the corresponding member of struct
327 * gl_extensions and return that member's offset (in bytes). If the name is
328 * not found in the \c extension_table, return 0.
330 * \param name Name of extension.
331 * \return Offset of member in struct gl_extensions.
334 name_to_offset(const char* name
)
336 const struct extension
*i
;
341 for (i
= extension_table
; i
->name
!= 0; ++i
) {
342 if (strcmp(name
, i
->name
) == 0)
351 * \brief Extensions enabled by default.
353 * These extensions are enabled by _mesa_init_extensions().
355 * XXX: Should these defaults also apply to GLES?
357 static const size_t default_extensions
[] = {
359 o(ARB_transpose_matrix
),
362 o(EXT_compiled_vertex_array
),
363 o(EXT_draw_range_elements
),
364 o(EXT_packed_pixels
),
365 o(EXT_rescale_normal
),
366 o(EXT_separate_specular_color
),
369 o(OES_standard_derivatives
),
371 /* Vendor Extensions */
372 o(APPLE_packed_pixels
),
373 o(IBM_multimode_draw_arrays
),
374 o(IBM_rasterpos_clip
),
375 o(NV_light_max_exponent
),
376 o(NV_texgen_reflection
),
384 * Enable all extensions suitable for a software-only renderer.
385 * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc.
388 _mesa_enable_sw_extensions(struct gl_context
*ctx
)
390 /*ctx->Extensions.ARB_copy_buffer = GL_TRUE;*/
391 ctx
->Extensions
.ARB_depth_clamp
= GL_TRUE
;
392 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
393 ctx
->Extensions
.ARB_draw_elements_base_vertex
= GL_TRUE
;
394 ctx
->Extensions
.ARB_draw_instanced
= GL_TRUE
;
395 ctx
->Extensions
.ARB_explicit_attrib_location
= GL_TRUE
;
396 ctx
->Extensions
.ARB_fragment_coord_conventions
= GL_TRUE
;
397 #if FEATURE_ARB_fragment_program
398 ctx
->Extensions
.ARB_fragment_program
= GL_TRUE
;
399 ctx
->Extensions
.ARB_fragment_program_shadow
= GL_TRUE
;
401 #if FEATURE_ARB_fragment_shader
402 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
404 #if FEATURE_ARB_framebuffer_object
405 ctx
->Extensions
.ARB_framebuffer_object
= GL_TRUE
;
407 #if FEATURE_ARB_geometry_shader4 && 0
408 /* XXX re-enable when GLSL compiler again supports geometry shaders */
409 ctx
->Extensions
.ARB_geometry_shader4
= GL_TRUE
;
411 ctx
->Extensions
.ARB_half_float_pixel
= GL_TRUE
;
412 ctx
->Extensions
.ARB_half_float_vertex
= GL_TRUE
;
413 ctx
->Extensions
.ARB_map_buffer_range
= GL_TRUE
;
415 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
416 ctx
->Extensions
.ARB_occlusion_query2
= GL_TRUE
;
418 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
419 #if FEATURE_ARB_shader_objects
420 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
421 ctx
->Extensions
.EXT_separate_shader_objects
= GL_TRUE
;
423 #if FEATURE_ARB_shading_language_100
424 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
426 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
427 ctx
->Extensions
.ARB_shadow_ambient
= GL_TRUE
;
428 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
;
429 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
430 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
431 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
432 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
433 /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/
434 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
435 ctx
->Extensions
.ARB_texture_rg
= GL_TRUE
;
436 ctx
->Extensions
.ARB_texture_compression_rgtc
= GL_TRUE
;
437 ctx
->Extensions
.ARB_texture_storage
= GL_TRUE
;
438 ctx
->Extensions
.ARB_vertex_array_object
= GL_TRUE
;
439 #if FEATURE_ARB_vertex_program
440 ctx
->Extensions
.ARB_vertex_program
= GL_TRUE
;
442 #if FEATURE_ARB_vertex_shader
443 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
446 ctx
->Extensions
.ARB_sync
= GL_TRUE
;
448 ctx
->Extensions
.APPLE_vertex_array_object
= GL_TRUE
;
449 #if FEATURE_APPLE_object_purgeable
450 ctx
->Extensions
.APPLE_object_purgeable
= GL_TRUE
;
452 ctx
->Extensions
.ATI_envmap_bumpmap
= GL_TRUE
;
453 #if FEATURE_ATI_fragment_shader
454 ctx
->Extensions
.ATI_fragment_shader
= GL_TRUE
;
456 ctx
->Extensions
.ATI_texture_compression_3dc
= GL_TRUE
;
457 ctx
->Extensions
.ATI_texture_env_combine3
= GL_TRUE
;
458 ctx
->Extensions
.ATI_texture_mirror_once
= GL_TRUE
;
459 ctx
->Extensions
.ATI_separate_stencil
= GL_TRUE
;
460 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
461 ctx
->Extensions
.EXT_blend_equation_separate
= GL_TRUE
;
462 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
463 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
464 ctx
->Extensions
.EXT_depth_bounds_test
= GL_TRUE
;
465 ctx
->Extensions
.EXT_draw_buffers2
= GL_TRUE
;
466 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
467 #if FEATURE_EXT_framebuffer_object
468 ctx
->Extensions
.EXT_framebuffer_object
= GL_TRUE
;
470 #if FEATURE_EXT_framebuffer_blit
471 ctx
->Extensions
.EXT_framebuffer_blit
= GL_TRUE
;
473 #if FEATURE_ARB_framebuffer_object
474 ctx
->Extensions
.EXT_framebuffer_multisample
= GL_TRUE
;
476 ctx
->Extensions
.EXT_packed_depth_stencil
= GL_TRUE
;
477 #if FEATURE_EXT_pixel_buffer_object
478 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
480 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
481 ctx
->Extensions
.EXT_provoking_vertex
= GL_TRUE
;
482 ctx
->Extensions
.EXT_shadow_funcs
= GL_TRUE
;
483 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
484 ctx
->Extensions
.EXT_stencil_two_side
= GL_TRUE
;
485 ctx
->Extensions
.EXT_texture_array
= GL_TRUE
;
486 ctx
->Extensions
.EXT_texture_compression_latc
= GL_TRUE
;
487 ctx
->Extensions
.EXT_texture_env_dot3
= GL_TRUE
;
488 ctx
->Extensions
.EXT_texture_filter_anisotropic
= GL_TRUE
;
489 ctx
->Extensions
.EXT_texture_mirror_clamp
= GL_TRUE
;
490 ctx
->Extensions
.EXT_texture_shared_exponent
= GL_TRUE
;
491 #if FEATURE_EXT_texture_sRGB
492 ctx
->Extensions
.EXT_texture_sRGB
= GL_TRUE
;
493 ctx
->Extensions
.EXT_texture_sRGB_decode
= GL_TRUE
;
495 ctx
->Extensions
.EXT_texture_swizzle
= GL_TRUE
;
496 #if FEATURE_EXT_transform_feedback
497 /*ctx->Extensions.EXT_transform_feedback = GL_TRUE;*/
499 ctx
->Extensions
.EXT_vertex_array_bgra
= GL_TRUE
;
500 /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/
501 ctx
->Extensions
.MESA_pack_invert
= GL_TRUE
;
502 ctx
->Extensions
.MESA_resize_buffers
= GL_TRUE
;
503 ctx
->Extensions
.MESA_texture_array
= GL_TRUE
;
504 ctx
->Extensions
.MESA_ycbcr_texture
= GL_TRUE
;
505 ctx
->Extensions
.NV_blend_square
= GL_TRUE
;
506 ctx
->Extensions
.NV_conditional_render
= GL_TRUE
;
507 /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/
508 ctx
->Extensions
.NV_point_sprite
= GL_TRUE
;
509 ctx
->Extensions
.NV_texture_env_combine4
= GL_TRUE
;
510 ctx
->Extensions
.NV_texture_rectangle
= GL_TRUE
;
511 /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/
512 #if FEATURE_NV_vertex_program
513 ctx
->Extensions
.NV_vertex_program
= GL_TRUE
;
514 ctx
->Extensions
.NV_vertex_program1_1
= GL_TRUE
;
516 #if FEATURE_NV_fragment_program
517 ctx
->Extensions
.NV_fragment_program
= GL_TRUE
;
519 #if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program
520 ctx
->Extensions
.NV_fragment_program_option
= GL_TRUE
;
522 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
523 ctx
->Extensions
.EXT_gpu_program_parameters
= GL_TRUE
;
525 #if FEATURE_texture_fxt1
526 _mesa_enable_extension(ctx
, "GL_3DFX_texture_compression_FXT1");
528 #if FEATURE_texture_s3tc
529 if (ctx
->Mesa_DXTn
) {
530 _mesa_enable_extension(ctx
, "GL_EXT_texture_compression_s3tc");
531 _mesa_enable_extension(ctx
, "GL_S3_s3tc");
538 * Enable all OpenGL 1.3 features and extensions.
539 * A convenience function to be called by drivers.
542 _mesa_enable_1_3_extensions(struct gl_context
*ctx
)
544 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
;
545 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
546 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
547 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
548 /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/
554 * Enable all OpenGL 1.4 features and extensions.
555 * A convenience function to be called by drivers.
558 _mesa_enable_1_4_extensions(struct gl_context
*ctx
)
560 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
561 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
562 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
563 ctx
->Extensions
.ARB_window_pos
= GL_TRUE
;
564 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
565 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
566 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
567 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
568 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
569 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
574 * Enable all OpenGL 1.5 features and extensions.
575 * A convenience function to be called by drivers.
578 _mesa_enable_1_5_extensions(struct gl_context
*ctx
)
580 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
581 ctx
->Extensions
.EXT_shadow_funcs
= GL_TRUE
;
586 * Enable all OpenGL 2.0 features and extensions.
587 * A convenience function to be called by drivers.
590 _mesa_enable_2_0_extensions(struct gl_context
*ctx
)
592 #if FEATURE_ARB_fragment_shader
593 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
595 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
596 ctx
->Extensions
.EXT_blend_equation_separate
= GL_TRUE
;
597 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
598 #if FEATURE_ARB_shader_objects
599 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
601 #if FEATURE_ARB_shading_language_100
602 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
604 ctx
->Extensions
.EXT_stencil_two_side
= GL_TRUE
;
605 #if FEATURE_ARB_vertex_shader
606 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
612 * Enable all OpenGL 2.1 features and extensions.
613 * A convenience function to be called by drivers.
616 _mesa_enable_2_1_extensions(struct gl_context
*ctx
)
618 #if FEATURE_EXT_pixel_buffer_object
619 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
621 #if FEATURE_EXT_texture_sRGB
622 ctx
->Extensions
.EXT_texture_sRGB
= GL_TRUE
;
628 * Either enable or disable the named extension.
629 * \return GL_TRUE for success, GL_FALSE if invalid extension name
632 set_extension( struct gl_context
*ctx
, const char *name
, GLboolean state
)
636 if (ctx
->Extensions
.String
) {
637 /* The string was already queried - can't change it now! */
638 _mesa_problem(ctx
, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name
);
642 offset
= name_to_offset(name
);
644 _mesa_problem(ctx
, "Trying to enable/disable unknown extension %s",
647 } else if (offset
== o(dummy_true
) && state
== GL_FALSE
) {
648 _mesa_problem(ctx
, "Trying to disable a permanently enabled extension: "
652 GLboolean
*base
= (GLboolean
*) &ctx
->Extensions
;
653 base
[offset
] = state
;
660 * Enable the named extension.
661 * Typically called by drivers.
664 _mesa_enable_extension( struct gl_context
*ctx
, const char *name
)
666 if (!set_extension(ctx
, name
, GL_TRUE
))
667 _mesa_problem(ctx
, "Trying to enable unknown extension: %s", name
);
672 * Disable the named extension.
673 * XXX is this really needed???
676 _mesa_disable_extension( struct gl_context
*ctx
, const char *name
)
678 if (!set_extension(ctx
, name
, GL_FALSE
))
679 _mesa_problem(ctx
, "Trying to disable unknown extension: %s", name
);
684 * Test if the named extension is enabled in this context.
687 _mesa_extension_is_enabled( struct gl_context
*ctx
, const char *name
)
695 offset
= name_to_offset(name
);
698 base
= (GLboolean
*) &ctx
->Extensions
;
704 * \brief Apply the \c MESA_EXTENSION_OVERRIDE environment variable.
706 * \c MESA_EXTENSION_OVERRIDE is a space-separated list of extensions to
707 * enable or disable. The list is processed thus:
708 * - Enable recognized extension names that are prefixed with '+'.
709 * - Disable recognized extension names that are prefixed with '-'.
710 * - Enable recognized extension names that are not prefixed.
711 * - Collect unrecognized extension names in a new string.
713 * \return Space-separated list of unrecognized extension names (which must
714 * be freed). Does not return \c NULL.
717 get_extension_override( struct gl_context
*ctx
)
719 const char *env_const
= _mesa_getenv("MESA_EXTENSION_OVERRIDE");
725 if (env_const
== NULL
) {
726 /* Return the empty string rather than NULL. This simplifies the logic
727 * of client functions. */
728 return calloc(4, sizeof(char));
731 /* extra_exts: List of unrecognized extensions. */
732 extra_exts
= calloc(ALIGN(strlen(env_const
) + 2, 4), sizeof(char));
734 /* Copy env_const because strtok() is destructive. */
735 env
= strdup(env_const
);
736 for (ext
= strtok(env
, " "); ext
!= NULL
; ext
= strtok(NULL
, " ")) {
752 recognized
= set_extension(ctx
, ext
, enable
);
754 strcat(extra_exts
, ext
);
755 strcat(extra_exts
, " ");
761 /* Remove trailing space. */
762 len
= strlen(extra_exts
);
763 if (len
> 0 && extra_exts
[len
- 1] == ' ')
764 extra_exts
[len
- 1] = '\0';
771 * \brief Initialize extension tables and enable default extensions.
773 * This should be called during context initialization.
774 * Note: Sets gl_extensions.dummy_true to true.
777 _mesa_init_extensions( struct gl_context
*ctx
)
779 GLboolean
*base
= (GLboolean
*) &ctx
->Extensions
;
780 GLboolean
*sentinel
= base
+ o(extension_sentinel
);
784 /* First, turn all extensions off. */
785 for (i
= base
; i
!= sentinel
; ++i
)
788 /* Then, selectively turn default extensions on. */
789 ctx
->Extensions
.dummy_true
= GL_TRUE
;
790 for (j
= default_extensions
; *j
!= 0; ++j
)
795 typedef unsigned short extension_index
;
799 * Compare two entries of the extensions table. Sorts first by year,
802 * Arguments are indices into extension_table.
805 extension_compare(const void *p1
, const void *p2
)
807 extension_index i1
= * (const extension_index
*) p1
;
808 extension_index i2
= * (const extension_index
*) p2
;
809 const struct extension
*e1
= &extension_table
[i1
];
810 const struct extension
*e2
= &extension_table
[i2
];
813 res
= (int)e1
->year
- (int)e2
->year
;
816 res
= strcmp(e1
->name
, e2
->name
);
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 /* Number of extensions */
836 /* Indices of the extensions sorted by year */
837 extension_index
*extension_indices
;
838 /* String of extra extensions. */
839 char *extra_extensions
= get_extension_override(ctx
);
840 GLboolean
*base
= (GLboolean
*) &ctx
->Extensions
;
841 const struct extension
*i
;
843 unsigned maxYear
= ~0;
845 /* Check if the MESA_EXTENSION_MAX_YEAR env var is set */
847 const char *env
= getenv("MESA_EXTENSION_MAX_YEAR");
850 _mesa_debug(ctx
, "Note: limiting GL extensions to %u or earlier\n",
855 /* Compute length of the extension string. */
857 for (i
= extension_table
; i
->name
!= 0; ++i
) {
858 if (base
[i
->offset
] &&
859 i
->year
<= maxYear
&&
860 (i
->api_set
& (1 << ctx
->API
))) {
861 length
+= strlen(i
->name
) + 1; /* +1 for space */
865 if (extra_extensions
!= NULL
)
866 length
+= 1 + strlen(extra_extensions
); /* +1 for space */
868 exts
= (char *) calloc(ALIGN(length
+ 1, 4), sizeof(char));
870 free(extra_extensions
);
874 extension_indices
= malloc(count
* sizeof(extension_index
));
875 if (extension_indices
== NULL
) {
877 free(extra_extensions
);
881 /* Sort extensions in chronological order because certain old applications (e.g.,
882 * Quake3 demo) store the extension list in a static size buffer so chronologically
883 * order ensure that the extensions that such applications expect will fit into
887 for (i
= extension_table
; i
->name
!= 0; ++i
) {
888 if (base
[i
->offset
] &&
889 i
->year
<= maxYear
&&
890 (i
->api_set
& (1 << ctx
->API
))) {
891 extension_indices
[j
++] = i
- extension_table
;
895 qsort(extension_indices
, count
, sizeof *extension_indices
, extension_compare
);
897 /* Build the extension string.*/
898 for (j
= 0; j
< count
; ++j
) {
899 i
= &extension_table
[extension_indices
[j
]];
900 assert(base
[i
->offset
] && (i
->api_set
& (1 << ctx
->API
)));
901 strcat(exts
, i
->name
);
904 free(extension_indices
);
905 if (extra_extensions
!= 0) {
906 strcat(exts
, extra_extensions
);
907 free(extra_extensions
);
910 return (GLubyte
*) exts
;
914 * Return number of enabled extensions.
917 _mesa_get_extension_count(struct gl_context
*ctx
)
920 const struct extension
*i
;
922 /* only count once */
923 if (ctx
->Extensions
.Count
!= 0)
924 return ctx
->Extensions
.Count
;
926 base
= (GLboolean
*) &ctx
->Extensions
;
927 for (i
= extension_table
; i
->name
!= 0; ++i
) {
928 if (base
[i
->offset
]) {
929 ctx
->Extensions
.Count
++;
932 return ctx
->Extensions
.Count
;
936 * Return name of i-th enabled extension
939 _mesa_get_enabled_extension(struct gl_context
*ctx
, GLuint index
)
941 const GLboolean
*base
;
943 const struct extension
*i
;
945 base
= (GLboolean
*) &ctx
->Extensions
;
947 for (i
= extension_table
; i
->name
!= 0; ++i
) {
948 if (n
== index
&& base
[i
->offset
]) {
949 return (const GLubyte
*) i
->name
;
950 } else if (base
[i
->offset
]) {