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2138bfe40ef58733436c9c2d165a6705e7455c1c
[mesa.git] / src / mesa / main / extensions.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.6
4 *
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 *
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:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
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.
24 */
25
26
27 #include "glheader.h"
28 #include "imports.h"
29 #include "context.h"
30 #include "extensions.h"
31 #include "simple_list.h"
32 #include "mtypes.h"
33
34
35 #define F(x) offsetof(struct gl_extensions, x)
36 #define ON GL_TRUE
37 #define OFF GL_FALSE
38
39
40 /*
41 * Note: The GL_MESAX_* extensions are placeholders for future ARB extensions.
42 */
43 static const struct {
44 GLboolean enabled;
45 const char *name;
46 int flag_offset;
47 } default_extensions[] = {
48 { OFF, "GL_ARB_copy_buffer", F(ARB_copy_buffer) },
49 { OFF, "GL_ARB_depth_texture", F(ARB_depth_texture) },
50 { OFF, "GL_ARB_depth_clamp", F(ARB_depth_clamp) },
51 { ON, "GL_ARB_draw_buffers", F(ARB_draw_buffers) },
52 { OFF, "GL_ARB_draw_elements_base_vertex", F(ARB_draw_elements_base_vertex) },
53 { OFF, "GL_ARB_fragment_program", F(ARB_fragment_program) },
54 { OFF, "GL_ARB_fragment_program_shadow", F(ARB_fragment_program_shadow) },
55 { OFF, "GL_ARB_fragment_shader", F(ARB_fragment_shader) },
56 { OFF, "GL_ARB_framebuffer_object", F(ARB_framebuffer_object) },
57 { OFF, "GL_ARB_half_float_pixel", F(ARB_half_float_pixel) },
58 { OFF, "GL_ARB_imaging", F(ARB_imaging) },
59 { OFF, "GL_ARB_map_buffer_range", F(ARB_map_buffer_range) },
60 { ON, "GL_ARB_multisample", F(ARB_multisample) },
61 { OFF, "GL_ARB_multitexture", F(ARB_multitexture) },
62 { OFF, "GL_ARB_occlusion_query", F(ARB_occlusion_query) },
63 { OFF, "GL_ARB_pixel_buffer_object", F(EXT_pixel_buffer_object) },
64 { OFF, "GL_ARB_point_parameters", F(EXT_point_parameters) },
65 { OFF, "GL_ARB_point_sprite", F(ARB_point_sprite) },
66 { OFF, "GL_ARB_provoking_vertex", F(EXT_provoking_vertex) },
67 { OFF, "GL_ARB_seamless_cube_map", F(ARB_seamless_cube_map) },
68 { OFF, "GL_ARB_shader_objects", F(ARB_shader_objects) },
69 { OFF, "GL_ARB_shading_language_100", F(ARB_shading_language_100) },
70 { OFF, "GL_ARB_shading_language_120", F(ARB_shading_language_120) },
71 { OFF, "GL_ARB_shadow", F(ARB_shadow) },
72 { OFF, "GL_ARB_shadow_ambient", F(ARB_shadow_ambient) },
73 { OFF, "GL_ARB_sync", F(ARB_sync) },
74 { OFF, "GL_ARB_texture_border_clamp", F(ARB_texture_border_clamp) },
75 { ON, "GL_ARB_texture_compression", F(ARB_texture_compression) },
76 { OFF, "GL_ARB_texture_cube_map", F(ARB_texture_cube_map) },
77 { OFF, "GL_ARB_texture_env_add", F(EXT_texture_env_add) },
78 { OFF, "GL_ARB_texture_env_combine", F(ARB_texture_env_combine) },
79 { OFF, "GL_ARB_texture_env_crossbar", F(ARB_texture_env_crossbar) },
80 { OFF, "GL_ARB_texture_env_dot3", F(ARB_texture_env_dot3) },
81 { OFF, "GL_MESAX_texture_float", F(ARB_texture_float) },
82 { OFF, "GL_ARB_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
83 { OFF, "GL_ARB_texture_non_power_of_two", F(ARB_texture_non_power_of_two)},
84 { OFF, "GL_ARB_texture_rectangle", F(NV_texture_rectangle) },
85 { ON, "GL_ARB_transpose_matrix", F(ARB_transpose_matrix) },
86 { OFF, "GL_ARB_vertex_array_bgra", F(EXT_vertex_array_bgra) },
87 { OFF, "GL_ARB_vertex_array_object", F(ARB_vertex_array_object) },
88 { ON, "GL_ARB_vertex_buffer_object", F(ARB_vertex_buffer_object) },
89 { OFF, "GL_ARB_vertex_program", F(ARB_vertex_program) },
90 { OFF, "GL_ARB_vertex_shader", F(ARB_vertex_shader) },
91 { ON, "GL_ARB_window_pos", F(ARB_window_pos) },
92 { ON, "GL_EXT_abgr", F(EXT_abgr) },
93 { ON, "GL_EXT_bgra", F(EXT_bgra) },
94 { OFF, "GL_EXT_blend_color", F(EXT_blend_color) },
95 { OFF, "GL_EXT_blend_equation_separate", F(EXT_blend_equation_separate) },
96 { OFF, "GL_EXT_blend_func_separate", F(EXT_blend_func_separate) },
97 { OFF, "GL_EXT_blend_logic_op", F(EXT_blend_logic_op) },
98 { OFF, "GL_EXT_blend_minmax", F(EXT_blend_minmax) },
99 { OFF, "GL_EXT_blend_subtract", F(EXT_blend_subtract) },
100 { OFF, "GL_EXT_clip_volume_hint", F(EXT_clip_volume_hint) },
101 { OFF, "GL_EXT_cull_vertex", F(EXT_cull_vertex) },
102 { ON, "GL_EXT_compiled_vertex_array", F(EXT_compiled_vertex_array) },
103 { OFF, "GL_EXT_convolution", F(EXT_convolution) },
104 { ON, "GL_EXT_copy_texture", F(EXT_copy_texture) },
105 { OFF, "GL_EXT_depth_bounds_test", F(EXT_depth_bounds_test) },
106 { ON, "GL_EXT_draw_range_elements", F(EXT_draw_range_elements) },
107 { OFF, "GL_EXT_framebuffer_blit", F(EXT_framebuffer_blit) },
108 { OFF, "GL_EXT_framebuffer_multisample", F(EXT_framebuffer_multisample) },
109 { OFF, "GL_EXT_framebuffer_object", F(EXT_framebuffer_object) },
110 { OFF, "GL_EXT_fog_coord", F(EXT_fog_coord) },
111 { OFF, "GL_EXT_gpu_program_parameters", F(EXT_gpu_program_parameters) },
112 { OFF, "GL_EXT_histogram", F(EXT_histogram) },
113 { ON, "GL_EXT_multi_draw_arrays", F(EXT_multi_draw_arrays) },
114 { OFF, "GL_EXT_packed_depth_stencil", F(EXT_packed_depth_stencil) },
115 { ON, "GL_EXT_packed_pixels", F(EXT_packed_pixels) },
116 { OFF, "GL_EXT_paletted_texture", F(EXT_paletted_texture) },
117 { OFF, "GL_EXT_pixel_buffer_object", F(EXT_pixel_buffer_object) },
118 { OFF, "GL_EXT_point_parameters", F(EXT_point_parameters) },
119 { ON, "GL_EXT_polygon_offset", F(EXT_polygon_offset) },
120 { OFF, "GL_EXT_provoking_vertex", F(EXT_provoking_vertex) },
121 { ON, "GL_EXT_rescale_normal", F(EXT_rescale_normal) },
122 { OFF, "GL_EXT_secondary_color", F(EXT_secondary_color) },
123 { ON, "GL_EXT_separate_specular_color", F(EXT_separate_specular_color) },
124 { OFF, "GL_EXT_shadow_funcs", F(EXT_shadow_funcs) },
125 { OFF, "GL_EXT_shared_texture_palette", F(EXT_shared_texture_palette) },
126 { OFF, "GL_EXT_stencil_two_side", F(EXT_stencil_two_side) },
127 { OFF, "GL_EXT_stencil_wrap", F(EXT_stencil_wrap) },
128 { ON, "GL_EXT_subtexture", F(EXT_subtexture) },
129 { ON, "GL_EXT_texture", F(EXT_texture) },
130 { ON, "GL_EXT_texture3D", F(EXT_texture3D) },
131 { OFF, "GL_EXT_texture_compression_s3tc", F(EXT_texture_compression_s3tc) },
132 { ON, "GL_EXT_texture_edge_clamp", F(SGIS_texture_edge_clamp) },
133 { OFF, "GL_EXT_texture_env_add", F(EXT_texture_env_add) },
134 { OFF, "GL_EXT_texture_env_combine", F(EXT_texture_env_combine) },
135 { OFF, "GL_EXT_texture_env_dot3", F(EXT_texture_env_dot3) },
136 { OFF, "GL_EXT_texture_filter_anisotropic", F(EXT_texture_filter_anisotropic) },
137 { OFF, "GL_EXT_texture_lod_bias", F(EXT_texture_lod_bias) },
138 { OFF, "GL_EXT_texture_mirror_clamp", F(EXT_texture_mirror_clamp) },
139 { ON, "GL_EXT_texture_object", F(EXT_texture_object) },
140 { OFF, "GL_EXT_texture_rectangle", F(NV_texture_rectangle) },
141 { OFF, "GL_EXT_texture_sRGB", F(EXT_texture_sRGB) },
142 { OFF, "GL_EXT_texture_swizzle", F(EXT_texture_swizzle) },
143 { OFF, "GL_EXT_timer_query", F(EXT_timer_query) },
144 { ON, "GL_EXT_vertex_array", F(EXT_vertex_array) },
145 { OFF, "GL_EXT_vertex_array_bgra", F(EXT_vertex_array_bgra) },
146 { OFF, "GL_EXT_vertex_array_set", F(EXT_vertex_array_set) },
147 { OFF, "GL_3DFX_texture_compression_FXT1", F(TDFX_texture_compression_FXT1) },
148 { OFF, "GL_APPLE_client_storage", F(APPLE_client_storage) },
149 { ON, "GL_APPLE_packed_pixels", F(APPLE_packed_pixels) },
150 { OFF, "GL_APPLE_vertex_array_object", F(APPLE_vertex_array_object) },
151 { OFF, "GL_ATI_blend_equation_separate", F(EXT_blend_equation_separate) },
152 { OFF, "GL_ATI_envmap_bumpmap", F(ATI_envmap_bumpmap) },
153 { OFF, "GL_ATI_texture_env_combine3", F(ATI_texture_env_combine3)},
154 { OFF, "GL_ATI_texture_mirror_once", F(ATI_texture_mirror_once)},
155 { OFF, "GL_ATI_fragment_shader", F(ATI_fragment_shader)},
156 { OFF, "GL_ATI_separate_stencil", F(ATI_separate_stencil)},
157 { ON, "GL_IBM_multimode_draw_arrays", F(IBM_multimode_draw_arrays) },
158 { ON, "GL_IBM_rasterpos_clip", F(IBM_rasterpos_clip) },
159 { OFF, "GL_IBM_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
160 { OFF, "GL_INGR_blend_func_separate", F(EXT_blend_func_separate) },
161 { OFF, "GL_MESA_pack_invert", F(MESA_pack_invert) },
162 { OFF, "GL_MESA_packed_depth_stencil", F(MESA_packed_depth_stencil) },
163 { OFF, "GL_MESA_resize_buffers", F(MESA_resize_buffers) },
164 { OFF, "GL_MESA_texture_array", F(MESA_texture_array) },
165 { OFF, "GL_MESA_texture_signed_rgba", F(MESA_texture_signed_rgba) },
166 { OFF, "GL_MESA_ycbcr_texture", F(MESA_ycbcr_texture) },
167 { ON, "GL_MESA_window_pos", F(ARB_window_pos) },
168 { OFF, "GL_NV_blend_square", F(NV_blend_square) },
169 { OFF, "GL_NV_depth_clamp", F(ARB_depth_clamp) },
170 { OFF, "GL_NV_fragment_program", F(NV_fragment_program) },
171 { OFF, "GL_NV_fragment_program_option", F(NV_fragment_program_option) },
172 { ON, "GL_NV_light_max_exponent", F(NV_light_max_exponent) },
173 { OFF, "GL_NV_packed_depth_stencil", F(EXT_packed_depth_stencil) },
174 { OFF, "GL_NV_point_sprite", F(NV_point_sprite) },
175 { OFF, "GL_NV_texture_env_combine4", F(NV_texture_env_combine4) },
176 { OFF, "GL_NV_texture_rectangle", F(NV_texture_rectangle) },
177 { ON, "GL_NV_texgen_reflection", F(NV_texgen_reflection) },
178 { OFF, "GL_NV_vertex_program", F(NV_vertex_program) },
179 { OFF, "GL_NV_vertex_program1_1", F(NV_vertex_program1_1) },
180 { ON, "GL_OES_read_format", F(OES_read_format) },
181 { OFF, "GL_SGI_color_matrix", F(SGI_color_matrix) },
182 { OFF, "GL_SGI_color_table", F(SGI_color_table) },
183 { OFF, "GL_SGI_texture_color_table", F(SGI_texture_color_table) },
184 { OFF, "GL_SGIS_generate_mipmap", F(SGIS_generate_mipmap) },
185 { OFF, "GL_SGIS_texture_border_clamp", F(ARB_texture_border_clamp) },
186 { ON, "GL_SGIS_texture_edge_clamp", F(SGIS_texture_edge_clamp) },
187 { ON, "GL_SGIS_texture_lod", F(SGIS_texture_lod) },
188 { ON, "GL_SUN_multi_draw_arrays", F(EXT_multi_draw_arrays) },
189 { OFF, "GL_S3_s3tc", F(S3_s3tc) },
190 };
191
192
193
194 /**
195 * Enable all extensions suitable for a software-only renderer.
196 * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc.
197 */
198 void
199 _mesa_enable_sw_extensions(GLcontext *ctx)
200 {
201 ctx->Extensions.ARB_copy_buffer = GL_TRUE;
202 ctx->Extensions.ARB_depth_clamp = GL_TRUE;
203 ctx->Extensions.ARB_depth_texture = GL_TRUE;
204 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
205 ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
206 #if FEATURE_ARB_fragment_program
207 ctx->Extensions.ARB_fragment_program = GL_TRUE;
208 ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
209 #endif
210 #if FEATURE_ARB_fragment_shader
211 ctx->Extensions.ARB_fragment_shader = GL_TRUE;
212 #endif
213 #if FEATURE_ARB_framebuffer_object
214 ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
215 #endif
216 ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
217 ctx->Extensions.ARB_imaging = GL_TRUE;
218 ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
219 ctx->Extensions.ARB_multitexture = GL_TRUE;
220 #if FEATURE_queryobj
221 ctx->Extensions.ARB_occlusion_query = GL_TRUE;
222 #endif
223 ctx->Extensions.ARB_point_sprite = GL_TRUE;
224 #if FEATURE_ARB_shader_objects
225 ctx->Extensions.ARB_shader_objects = GL_TRUE;
226 #endif
227 #if FEATURE_ARB_shading_language_100
228 ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
229 #endif
230 #if FEATURE_ARB_shading_language_120
231 ctx->Extensions.ARB_shading_language_120 = GL_TRUE;
232 #endif
233 ctx->Extensions.ARB_shadow = GL_TRUE;
234 ctx->Extensions.ARB_shadow_ambient = GL_TRUE;
235 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE;
236 ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
237 ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
238 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
239 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
240 /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/
241 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
242 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
243 ctx->Extensions.ARB_vertex_array_object = GL_TRUE;
244 #if FEATURE_ARB_vertex_program
245 ctx->Extensions.ARB_vertex_program = GL_TRUE;
246 #endif
247 #if FEATURE_ARB_vertex_shader
248 ctx->Extensions.ARB_vertex_shader = GL_TRUE;
249 #endif
250 #if FEATURE_ARB_vertex_buffer_object
251 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
252 #endif
253 #if FEATURE_ARB_sync
254 ctx->Extensions.ARB_sync = GL_TRUE;
255 #endif
256 ctx->Extensions.APPLE_vertex_array_object = GL_TRUE;
257 ctx->Extensions.ATI_envmap_bumpmap = GL_TRUE;
258 #if FEATURE_ATI_fragment_shader
259 ctx->Extensions.ATI_fragment_shader = GL_TRUE;
260 #endif
261 ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;
262 ctx->Extensions.ATI_texture_mirror_once = GL_TRUE;
263 ctx->Extensions.ATI_separate_stencil = GL_TRUE;
264 ctx->Extensions.EXT_blend_color = GL_TRUE;
265 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
266 ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
267 ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
268 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
269 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
270 ctx->Extensions.EXT_convolution = GL_TRUE;
271 ctx->Extensions.EXT_depth_bounds_test = GL_TRUE;
272 ctx->Extensions.EXT_fog_coord = GL_TRUE;
273 #if FEATURE_EXT_framebuffer_object
274 ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
275 #endif
276 #if FEATURE_EXT_framebuffer_blit
277 ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
278 #endif
279 #if FEATURE_ARB_framebuffer_object
280 ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
281 #endif
282 ctx->Extensions.EXT_histogram = GL_TRUE;
283 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
284 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
285 ctx->Extensions.EXT_paletted_texture = GL_TRUE;
286 #if FEATURE_EXT_pixel_buffer_object
287 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
288 #endif
289 ctx->Extensions.EXT_point_parameters = GL_TRUE;
290 ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
291 ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
292 ctx->Extensions.EXT_secondary_color = GL_TRUE;
293 ctx->Extensions.EXT_shared_texture_palette = GL_TRUE;
294 ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
295 ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
296 ctx->Extensions.EXT_texture_env_add = GL_TRUE;
297 ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
298 ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
299 ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
300 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
301 #if FEATURE_EXT_texture_sRGB
302 ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
303 #endif
304 ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
305 ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
306 /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/
307 ctx->Extensions.MESA_pack_invert = GL_TRUE;
308 ctx->Extensions.MESA_resize_buffers = GL_TRUE;
309 ctx->Extensions.MESA_texture_array = GL_TRUE;
310 ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
311 ctx->Extensions.NV_blend_square = GL_TRUE;
312 /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/
313 ctx->Extensions.NV_point_sprite = GL_TRUE;
314 ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
315 ctx->Extensions.NV_texture_rectangle = GL_TRUE;
316 /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/
317 #if FEATURE_NV_vertex_program
318 ctx->Extensions.NV_vertex_program = GL_TRUE;
319 ctx->Extensions.NV_vertex_program1_1 = GL_TRUE;
320 #endif
321 #if FEATURE_NV_fragment_program
322 ctx->Extensions.NV_fragment_program = GL_TRUE;
323 #endif
324 #if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program
325 ctx->Extensions.NV_fragment_program_option = GL_TRUE;
326 #endif
327 ctx->Extensions.SGI_color_matrix = GL_TRUE;
328 ctx->Extensions.SGI_color_table = GL_TRUE;
329 ctx->Extensions.SGI_texture_color_table = GL_TRUE;
330 ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;
331 ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE;
332 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
333 ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
334 #endif
335 #if FEATURE_texture_fxt1
336 _mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1");
337 #endif
338 #if FEATURE_texture_s3tc
339 if (ctx->Mesa_DXTn) {
340 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
341 _mesa_enable_extension(ctx, "GL_S3_s3tc");
342 }
343 #endif
344 }
345
346
347 /**
348 * Enable GL_ARB_imaging and all the EXT extensions that are subsets of it.
349 */
350 void
351 _mesa_enable_imaging_extensions(GLcontext *ctx)
352 {
353 ctx->Extensions.ARB_imaging = GL_TRUE;
354 ctx->Extensions.EXT_blend_color = GL_TRUE;
355 ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
356 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
357 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
358 ctx->Extensions.EXT_convolution = GL_TRUE;
359 ctx->Extensions.EXT_histogram = GL_TRUE;
360 ctx->Extensions.SGI_color_matrix = GL_TRUE;
361 ctx->Extensions.SGI_color_table = GL_TRUE;
362 }
363
364
365
366 /**
367 * Enable all OpenGL 1.3 features and extensions.
368 * A convenience function to be called by drivers.
369 */
370 void
371 _mesa_enable_1_3_extensions(GLcontext *ctx)
372 {
373 /*ctx->Extensions.ARB_multisample = GL_TRUE;*/
374 ctx->Extensions.ARB_multitexture = GL_TRUE;
375 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE;
376 /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/
377 ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
378 ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
379 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
380 ctx->Extensions.EXT_texture_env_add = GL_TRUE;
381 /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/
382 }
383
384
385
386 /**
387 * Enable all OpenGL 1.4 features and extensions.
388 * A convenience function to be called by drivers.
389 */
390 void
391 _mesa_enable_1_4_extensions(GLcontext *ctx)
392 {
393 ctx->Extensions.ARB_depth_texture = GL_TRUE;
394 ctx->Extensions.ARB_shadow = GL_TRUE;
395 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
396 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
397 ctx->Extensions.ARB_window_pos = GL_TRUE;
398 ctx->Extensions.EXT_blend_color = GL_TRUE;
399 ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
400 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
401 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
402 ctx->Extensions.EXT_fog_coord = GL_TRUE;
403 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
404 ctx->Extensions.EXT_point_parameters = GL_TRUE;
405 ctx->Extensions.EXT_secondary_color = GL_TRUE;
406 ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
407 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
408 ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;
409 }
410
411
412 /**
413 * Enable all OpenGL 1.5 features and extensions.
414 * A convenience function to be called by drivers.
415 */
416 void
417 _mesa_enable_1_5_extensions(GLcontext *ctx)
418 {
419 ctx->Extensions.ARB_occlusion_query = GL_TRUE;
420 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
421 ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
422 }
423
424
425 /**
426 * Enable all OpenGL 2.0 features and extensions.
427 * A convenience function to be called by drivers.
428 */
429 void
430 _mesa_enable_2_0_extensions(GLcontext *ctx)
431 {
432 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
433 #if FEATURE_ARB_fragment_shader
434 ctx->Extensions.ARB_fragment_shader = GL_TRUE;
435 #endif
436 ctx->Extensions.ARB_point_sprite = GL_TRUE;
437 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
438 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
439 #if FEATURE_ARB_shader_objects
440 ctx->Extensions.ARB_shader_objects = GL_TRUE;
441 #endif
442 #if FEATURE_ARB_shading_language_100
443 ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
444 #endif
445 ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
446 #if FEATURE_ARB_vertex_shader
447 ctx->Extensions.ARB_vertex_shader = GL_TRUE;
448 #endif
449 }
450
451
452 /**
453 * Enable all OpenGL 2.1 features and extensions.
454 * A convenience function to be called by drivers.
455 */
456 void
457 _mesa_enable_2_1_extensions(GLcontext *ctx)
458 {
459 #if FEATURE_EXT_pixel_buffer_object
460 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
461 #endif
462 #if FEATURE_EXT_texture_sRGB
463 ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
464 #endif
465 #ifdef FEATURE_ARB_shading_language_120
466 ctx->Extensions.ARB_shading_language_120 = GL_TRUE;
467 #endif
468 }
469
470
471
472 /**
473 * Either enable or disable the named extension.
474 * \return GL_TRUE for success, GL_FALSE if invalid extension name
475 */
476 static GLboolean
477 set_extension( GLcontext *ctx, const char *name, GLboolean state )
478 {
479 GLboolean *base = (GLboolean *) &ctx->Extensions;
480 GLuint i;
481
482 if (ctx->Extensions.String) {
483 /* The string was already queried - can't change it now! */
484 _mesa_problem(ctx, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name);
485 return GL_FALSE;
486 }
487
488 for (i = 0 ; i < Elements(default_extensions) ; i++) {
489 if (_mesa_strcmp(default_extensions[i].name, name) == 0) {
490 if (default_extensions[i].flag_offset) {
491 GLboolean *enabled = base + default_extensions[i].flag_offset;
492 *enabled = state;
493 }
494 return GL_TRUE;
495 }
496 }
497 return GL_FALSE;
498 }
499
500
501 /**
502 * Enable the named extension.
503 * Typically called by drivers.
504 */
505 void
506 _mesa_enable_extension( GLcontext *ctx, const char *name )
507 {
508 if (!set_extension(ctx, name, GL_TRUE))
509 _mesa_problem(ctx, "Trying to enable unknown extension: %s", name);
510 }
511
512
513 /**
514 * Disable the named extension.
515 * XXX is this really needed???
516 */
517 void
518 _mesa_disable_extension( GLcontext *ctx, const char *name )
519 {
520 if (!set_extension(ctx, name, GL_FALSE))
521 _mesa_problem(ctx, "Trying to disable unknown extension: %s", name);
522 }
523
524
525 /**
526 * Test if the named extension is enabled in this context.
527 */
528 GLboolean
529 _mesa_extension_is_enabled( GLcontext *ctx, const char *name )
530 {
531 const GLboolean *base = (const GLboolean *) &ctx->Extensions;
532 GLuint i;
533
534 for (i = 0 ; i < Elements(default_extensions) ; i++) {
535 if (_mesa_strcmp(default_extensions[i].name, name) == 0) {
536 if (!default_extensions[i].flag_offset)
537 return GL_TRUE;
538 return *(base + default_extensions[i].flag_offset);
539 }
540 }
541 return GL_FALSE;
542 }
543
544
545 /**
546 * Append string 'b' onto string 'a'. Free 'a' and return new string.
547 */
548 static char *
549 append(const char *a, const char *b)
550 {
551 const GLuint aLen = a ? _mesa_strlen(a) : 0;
552 const GLuint bLen = b ? _mesa_strlen(b) : 0;
553 char *s = _mesa_calloc(aLen + bLen + 1);
554 if (s) {
555 if (a)
556 _mesa_memcpy(s, a, aLen);
557 if (b)
558 _mesa_memcpy(s + aLen, b, bLen);
559 s[aLen + bLen] = '\0';
560 }
561 if (a)
562 _mesa_free((void *) a);
563 return s;
564 }
565
566
567 /**
568 * Check the MESA_EXTENSION_OVERRIDE env var.
569 * For extension names that are recognized, turn them on. For extension
570 * names that are recognized and prefixed with '-', turn them off.
571 * Return a string of the unknown/leftover names.
572 */
573 static const char *
574 get_extension_override( GLcontext *ctx )
575 {
576 const char *envExt = _mesa_getenv("MESA_EXTENSION_OVERRIDE");
577 char *extraExt = NULL;
578 char ext[1000];
579 GLuint extLen = 0;
580 GLuint i;
581 GLboolean disableExt = GL_FALSE;
582
583 if (!envExt)
584 return NULL;
585
586 for (i = 0; ; i++) {
587 if (envExt[i] == '\0' || envExt[i] == ' ') {
588 /* terminate/process 'ext' if extLen > 0 */
589 if (extLen > 0) {
590 assert(extLen < sizeof(ext));
591 /* enable extension named by 'ext' */
592 ext[extLen] = 0;
593 if (!set_extension(ctx, ext, !disableExt)) {
594 /* unknown extension name, append it to extraExt */
595 if (extraExt) {
596 extraExt = append(extraExt, " ");
597 }
598 extraExt = append(extraExt, ext);
599 }
600 extLen = 0;
601 disableExt = GL_FALSE;
602 }
603 if (envExt[i] == '\0')
604 break;
605 }
606 else if (envExt[i] == '-') {
607 disableExt = GL_TRUE;
608 }
609 else {
610 /* accumulate this non-space character */
611 ext[extLen++] = envExt[i];
612 }
613 }
614
615 return extraExt;
616 }
617
618
619 /**
620 * Run through the default_extensions array above and set the
621 * ctx->Extensions.ARB/EXT_* flags accordingly.
622 * To be called during context initialization.
623 */
624 void
625 _mesa_init_extensions( GLcontext *ctx )
626 {
627 GLboolean *base = (GLboolean *) &ctx->Extensions;
628 GLuint i;
629
630 for (i = 0 ; i < Elements(default_extensions) ; i++) {
631 if (default_extensions[i].enabled &&
632 default_extensions[i].flag_offset) {
633 *(base + default_extensions[i].flag_offset) = GL_TRUE;
634 }
635 }
636 }
637
638
639 /**
640 * Construct the GL_EXTENSIONS string. Called the first time that
641 * glGetString(GL_EXTENSIONS) is called.
642 */
643 GLubyte *
644 _mesa_make_extension_string( GLcontext *ctx )
645 {
646 const GLboolean *base = (const GLboolean *) &ctx->Extensions;
647 const char *extraExt = get_extension_override(ctx);
648 GLuint extStrLen = 0;
649 char *s;
650 GLuint i;
651
652 /* first, compute length of the extension string */
653 for (i = 0 ; i < Elements(default_extensions) ; i++) {
654 if (!default_extensions[i].flag_offset ||
655 *(base + default_extensions[i].flag_offset)) {
656 extStrLen += (GLuint)_mesa_strlen(default_extensions[i].name) + 1;
657 }
658 }
659
660 if (extraExt)
661 extStrLen += _mesa_strlen(extraExt) + 1; /* +1 for space */
662
663 /* allocate the extension string */
664 s = (char *) _mesa_malloc(extStrLen);
665 if (!s)
666 return NULL;
667
668 /* second, build the extension string */
669 extStrLen = 0;
670 for (i = 0 ; i < Elements(default_extensions) ; i++) {
671 if (!default_extensions[i].flag_offset ||
672 *(base + default_extensions[i].flag_offset)) {
673 GLuint len = (GLuint)_mesa_strlen(default_extensions[i].name);
674 _mesa_memcpy(s + extStrLen, default_extensions[i].name, len);
675 extStrLen += len;
676 s[extStrLen] = ' ';
677 extStrLen++;
678 }
679 }
680 ASSERT(extStrLen > 0);
681
682 s[extStrLen - 1] = 0; /* -1 to overwrite trailing the ' ' */
683
684 if (extraExt) {
685 s = append(s, " ");
686 s = append(s, extraExt);
687 }
688
689 return (GLubyte *) s;
690 }