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2ad66de7dd137e2668d7b9600b1997d1030c259c
[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_seamless_cube_map", F(ARB_seamless_cube_map) },
67 { OFF, "GL_ARB_shader_objects", F(ARB_shader_objects) },
68 { OFF, "GL_ARB_shading_language_100", F(ARB_shading_language_100) },
69 { OFF, "GL_ARB_shading_language_120", F(ARB_shading_language_120) },
70 { OFF, "GL_ARB_shadow", F(ARB_shadow) },
71 { OFF, "GL_ARB_shadow_ambient", F(ARB_shadow_ambient) },
72 { OFF, "GL_ARB_sync", F(ARB_sync) },
73 { OFF, "GL_ARB_texture_border_clamp", F(ARB_texture_border_clamp) },
74 { ON, "GL_ARB_texture_compression", F(ARB_texture_compression) },
75 { OFF, "GL_ARB_texture_cube_map", F(ARB_texture_cube_map) },
76 { OFF, "GL_ARB_texture_env_add", F(EXT_texture_env_add) },
77 { OFF, "GL_ARB_texture_env_combine", F(ARB_texture_env_combine) },
78 { OFF, "GL_ARB_texture_env_crossbar", F(ARB_texture_env_crossbar) },
79 { OFF, "GL_ARB_texture_env_dot3", F(ARB_texture_env_dot3) },
80 { OFF, "GL_MESAX_texture_float", F(ARB_texture_float) },
81 { OFF, "GL_ARB_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
82 { OFF, "GL_ARB_texture_non_power_of_two", F(ARB_texture_non_power_of_two)},
83 { OFF, "GL_ARB_texture_rectangle", F(NV_texture_rectangle) },
84 { ON, "GL_ARB_transpose_matrix", F(ARB_transpose_matrix) },
85 { OFF, "GL_ARB_vertex_array_bgra", F(EXT_vertex_array_bgra) },
86 { OFF, "GL_ARB_vertex_array_object", F(ARB_vertex_array_object) },
87 { ON, "GL_ARB_vertex_buffer_object", F(ARB_vertex_buffer_object) },
88 { OFF, "GL_ARB_vertex_program", F(ARB_vertex_program) },
89 { OFF, "GL_ARB_vertex_shader", F(ARB_vertex_shader) },
90 { ON, "GL_ARB_window_pos", F(ARB_window_pos) },
91 { ON, "GL_EXT_abgr", F(EXT_abgr) },
92 { ON, "GL_EXT_bgra", F(EXT_bgra) },
93 { OFF, "GL_EXT_blend_color", F(EXT_blend_color) },
94 { OFF, "GL_EXT_blend_equation_separate", F(EXT_blend_equation_separate) },
95 { OFF, "GL_EXT_blend_func_separate", F(EXT_blend_func_separate) },
96 { OFF, "GL_EXT_blend_logic_op", F(EXT_blend_logic_op) },
97 { OFF, "GL_EXT_blend_minmax", F(EXT_blend_minmax) },
98 { OFF, "GL_EXT_blend_subtract", F(EXT_blend_subtract) },
99 { OFF, "GL_EXT_clip_volume_hint", F(EXT_clip_volume_hint) },
100 { OFF, "GL_EXT_cull_vertex", F(EXT_cull_vertex) },
101 { ON, "GL_EXT_compiled_vertex_array", F(EXT_compiled_vertex_array) },
102 { OFF, "GL_EXT_convolution", F(EXT_convolution) },
103 { ON, "GL_EXT_copy_texture", F(EXT_copy_texture) },
104 { OFF, "GL_EXT_depth_bounds_test", F(EXT_depth_bounds_test) },
105 { ON, "GL_EXT_draw_range_elements", F(EXT_draw_range_elements) },
106 { OFF, "GL_EXT_framebuffer_object", F(EXT_framebuffer_object) },
107 { OFF, "GL_EXT_framebuffer_blit", F(EXT_framebuffer_blit) },
108 { OFF, "GL_EXT_fog_coord", F(EXT_fog_coord) },
109 { OFF, "GL_EXT_gpu_program_parameters", F(EXT_gpu_program_parameters) },
110 { OFF, "GL_EXT_histogram", F(EXT_histogram) },
111 { ON, "GL_EXT_multi_draw_arrays", F(EXT_multi_draw_arrays) },
112 { OFF, "GL_EXT_packed_depth_stencil", F(EXT_packed_depth_stencil) },
113 { ON, "GL_EXT_packed_pixels", F(EXT_packed_pixels) },
114 { OFF, "GL_EXT_paletted_texture", F(EXT_paletted_texture) },
115 { OFF, "GL_EXT_pixel_buffer_object", F(EXT_pixel_buffer_object) },
116 { OFF, "GL_EXT_point_parameters", F(EXT_point_parameters) },
117 { ON, "GL_EXT_polygon_offset", F(EXT_polygon_offset) },
118 { OFF, "GL_EXT_provoking_vertex", F(EXT_provoking_vertex) },
119 { ON, "GL_EXT_rescale_normal", F(EXT_rescale_normal) },
120 { OFF, "GL_EXT_secondary_color", F(EXT_secondary_color) },
121 { ON, "GL_EXT_separate_specular_color", F(EXT_separate_specular_color) },
122 { OFF, "GL_EXT_shadow_funcs", F(EXT_shadow_funcs) },
123 { OFF, "GL_EXT_shared_texture_palette", F(EXT_shared_texture_palette) },
124 { OFF, "GL_EXT_stencil_two_side", F(EXT_stencil_two_side) },
125 { OFF, "GL_EXT_stencil_wrap", F(EXT_stencil_wrap) },
126 { ON, "GL_EXT_subtexture", F(EXT_subtexture) },
127 { ON, "GL_EXT_texture", F(EXT_texture) },
128 { ON, "GL_EXT_texture3D", F(EXT_texture3D) },
129 { OFF, "GL_EXT_texture_compression_s3tc", F(EXT_texture_compression_s3tc) },
130 { ON, "GL_EXT_texture_edge_clamp", F(SGIS_texture_edge_clamp) },
131 { OFF, "GL_EXT_texture_env_add", F(EXT_texture_env_add) },
132 { OFF, "GL_EXT_texture_env_combine", F(EXT_texture_env_combine) },
133 { OFF, "GL_EXT_texture_env_dot3", F(EXT_texture_env_dot3) },
134 { OFF, "GL_EXT_texture_filter_anisotropic", F(EXT_texture_filter_anisotropic) },
135 { OFF, "GL_EXT_texture_lod_bias", F(EXT_texture_lod_bias) },
136 { OFF, "GL_EXT_texture_mirror_clamp", F(EXT_texture_mirror_clamp) },
137 { ON, "GL_EXT_texture_object", F(EXT_texture_object) },
138 { OFF, "GL_EXT_texture_rectangle", F(NV_texture_rectangle) },
139 { OFF, "GL_EXT_texture_sRGB", F(EXT_texture_sRGB) },
140 { OFF, "GL_EXT_texture_swizzle", F(EXT_texture_swizzle) },
141 { OFF, "GL_EXT_timer_query", F(EXT_timer_query) },
142 { ON, "GL_EXT_vertex_array", F(EXT_vertex_array) },
143 { OFF, "GL_EXT_vertex_array_bgra", F(EXT_vertex_array_bgra) },
144 { OFF, "GL_EXT_vertex_array_set", F(EXT_vertex_array_set) },
145 { OFF, "GL_3DFX_texture_compression_FXT1", F(TDFX_texture_compression_FXT1) },
146 { OFF, "GL_APPLE_client_storage", F(APPLE_client_storage) },
147 { ON, "GL_APPLE_packed_pixels", F(APPLE_packed_pixels) },
148 { OFF, "GL_APPLE_vertex_array_object", F(APPLE_vertex_array_object) },
149 { OFF, "GL_ATI_blend_equation_separate", F(EXT_blend_equation_separate) },
150 { OFF, "GL_ATI_envmap_bumpmap", F(ATI_envmap_bumpmap) },
151 { OFF, "GL_ATI_texture_env_combine3", F(ATI_texture_env_combine3)},
152 { OFF, "GL_ATI_texture_mirror_once", F(ATI_texture_mirror_once)},
153 { OFF, "GL_ATI_fragment_shader", F(ATI_fragment_shader)},
154 { OFF, "GL_ATI_separate_stencil", F(ATI_separate_stencil)},
155 { ON, "GL_IBM_multimode_draw_arrays", F(IBM_multimode_draw_arrays) },
156 { ON, "GL_IBM_rasterpos_clip", F(IBM_rasterpos_clip) },
157 { OFF, "GL_IBM_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
158 { OFF, "GL_INGR_blend_func_separate", F(EXT_blend_func_separate) },
159 { OFF, "GL_MESA_pack_invert", F(MESA_pack_invert) },
160 { OFF, "GL_MESA_packed_depth_stencil", F(MESA_packed_depth_stencil) },
161 { OFF, "GL_MESA_resize_buffers", F(MESA_resize_buffers) },
162 { OFF, "GL_MESA_texture_array", F(MESA_texture_array) },
163 { OFF, "GL_MESA_texture_signed_rgba", F(MESA_texture_signed_rgba) },
164 { OFF, "GL_MESA_ycbcr_texture", F(MESA_ycbcr_texture) },
165 { ON, "GL_MESA_window_pos", F(ARB_window_pos) },
166 { OFF, "GL_NV_blend_square", F(NV_blend_square) },
167 { OFF, "GL_NV_depth_clamp", F(ARB_depth_clamp) },
168 { OFF, "GL_NV_fragment_program", F(NV_fragment_program) },
169 { ON, "GL_NV_light_max_exponent", F(NV_light_max_exponent) },
170 { OFF, "GL_NV_point_sprite", F(NV_point_sprite) },
171 { OFF, "GL_NV_texture_env_combine4", F(NV_texture_env_combine4) },
172 { OFF, "GL_NV_texture_rectangle", F(NV_texture_rectangle) },
173 { ON, "GL_NV_texgen_reflection", F(NV_texgen_reflection) },
174 { OFF, "GL_NV_vertex_program", F(NV_vertex_program) },
175 { OFF, "GL_NV_vertex_program1_1", F(NV_vertex_program1_1) },
176 { ON, "GL_OES_read_format", F(OES_read_format) },
177 { OFF, "GL_SGI_color_matrix", F(SGI_color_matrix) },
178 { OFF, "GL_SGI_color_table", F(SGI_color_table) },
179 { OFF, "GL_SGI_texture_color_table", F(SGI_texture_color_table) },
180 { OFF, "GL_SGIS_generate_mipmap", F(SGIS_generate_mipmap) },
181 { OFF, "GL_SGIS_texture_border_clamp", F(ARB_texture_border_clamp) },
182 { ON, "GL_SGIS_texture_edge_clamp", F(SGIS_texture_edge_clamp) },
183 { ON, "GL_SGIS_texture_lod", F(SGIS_texture_lod) },
184 { ON, "GL_SUN_multi_draw_arrays", F(EXT_multi_draw_arrays) },
185 { OFF, "GL_S3_s3tc", F(S3_s3tc) },
186 };
187
188
189
190 /**
191 * Enable all extensions suitable for a software-only renderer.
192 * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc.
193 */
194 void
195 _mesa_enable_sw_extensions(GLcontext *ctx)
196 {
197 ctx->Extensions.ARB_copy_buffer = GL_TRUE;
198 ctx->Extensions.ARB_depth_clamp = GL_TRUE;
199 ctx->Extensions.ARB_depth_texture = GL_TRUE;
200 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
201 ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
202 #if FEATURE_ARB_fragment_program
203 ctx->Extensions.ARB_fragment_program = GL_TRUE;
204 ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
205 #endif
206 #if FEATURE_ARB_fragment_shader
207 ctx->Extensions.ARB_fragment_shader = GL_TRUE;
208 #endif
209 #if FEATURE_ARB_framebuffer_object
210 ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
211 #endif
212 ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
213 ctx->Extensions.ARB_imaging = GL_TRUE;
214 ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
215 ctx->Extensions.ARB_multitexture = GL_TRUE;
216 #if FEATURE_ARB_occlusion_query
217 ctx->Extensions.ARB_occlusion_query = GL_TRUE;
218 #endif
219 ctx->Extensions.ARB_point_sprite = GL_TRUE;
220 #if FEATURE_ARB_shader_objects
221 ctx->Extensions.ARB_shader_objects = GL_TRUE;
222 #endif
223 #if FEATURE_ARB_shading_language_100
224 ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
225 #endif
226 #if FEATURE_ARB_shading_language_120
227 ctx->Extensions.ARB_shading_language_120 = GL_TRUE;
228 #endif
229 ctx->Extensions.ARB_shadow = GL_TRUE;
230 ctx->Extensions.ARB_shadow_ambient = GL_TRUE;
231 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE;
232 ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
233 ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
234 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
235 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
236 /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/
237 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
238 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
239 ctx->Extensions.ARB_vertex_array_object = GL_TRUE;
240 #if FEATURE_ARB_vertex_program
241 ctx->Extensions.ARB_vertex_program = GL_TRUE;
242 #endif
243 #if FEATURE_ARB_vertex_shader
244 ctx->Extensions.ARB_vertex_shader = GL_TRUE;
245 #endif
246 #if FEATURE_ARB_vertex_buffer_object
247 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
248 #endif
249 #if FEATURE_ARB_sync
250 ctx->Extensions.ARB_sync = GL_TRUE;
251 #endif
252 ctx->Extensions.APPLE_vertex_array_object = GL_TRUE;
253 ctx->Extensions.ATI_envmap_bumpmap = GL_TRUE;
254 #if FEATURE_ATI_fragment_shader
255 ctx->Extensions.ATI_fragment_shader = GL_TRUE;
256 #endif
257 ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;
258 ctx->Extensions.ATI_texture_mirror_once = GL_TRUE;
259 ctx->Extensions.ATI_separate_stencil = GL_TRUE;
260 ctx->Extensions.EXT_blend_color = GL_TRUE;
261 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
262 ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
263 ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
264 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
265 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
266 ctx->Extensions.EXT_convolution = GL_TRUE;
267 ctx->Extensions.EXT_depth_bounds_test = GL_TRUE;
268 ctx->Extensions.EXT_fog_coord = GL_TRUE;
269 #if FEATURE_EXT_framebuffer_object
270 ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
271 #endif
272 #if FEATURE_EXT_framebuffer_blit
273 ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
274 #endif
275 ctx->Extensions.EXT_histogram = GL_TRUE;
276 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
277 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
278 ctx->Extensions.EXT_paletted_texture = GL_TRUE;
279 #if FEATURE_EXT_pixel_buffer_object
280 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
281 #endif
282 ctx->Extensions.EXT_point_parameters = GL_TRUE;
283 ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
284 ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
285 ctx->Extensions.EXT_secondary_color = GL_TRUE;
286 ctx->Extensions.EXT_shared_texture_palette = GL_TRUE;
287 ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
288 ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
289 ctx->Extensions.EXT_texture_env_add = GL_TRUE;
290 ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
291 ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
292 ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
293 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
294 #if FEATURE_EXT_texture_sRGB
295 ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
296 #endif
297 ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
298 ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
299 /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/
300 ctx->Extensions.MESA_pack_invert = GL_TRUE;
301 ctx->Extensions.MESA_resize_buffers = GL_TRUE;
302 ctx->Extensions.MESA_texture_array = GL_TRUE;
303 ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
304 ctx->Extensions.NV_blend_square = GL_TRUE;
305 /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/
306 ctx->Extensions.NV_point_sprite = GL_TRUE;
307 ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
308 ctx->Extensions.NV_texture_rectangle = GL_TRUE;
309 /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/
310 #if FEATURE_NV_vertex_program
311 ctx->Extensions.NV_vertex_program = GL_TRUE;
312 ctx->Extensions.NV_vertex_program1_1 = GL_TRUE;
313 #endif
314 #if FEATURE_NV_fragment_program
315 ctx->Extensions.NV_fragment_program = GL_TRUE;
316 #endif
317 ctx->Extensions.SGI_color_matrix = GL_TRUE;
318 ctx->Extensions.SGI_color_table = GL_TRUE;
319 ctx->Extensions.SGI_texture_color_table = GL_TRUE;
320 ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;
321 ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE;
322 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
323 ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
324 #endif
325 #if FEATURE_texture_fxt1
326 _mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1");
327 #endif
328 #if FEATURE_texture_s3tc
329 if (ctx->Mesa_DXTn) {
330 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
331 _mesa_enable_extension(ctx, "GL_S3_s3tc");
332 }
333 #endif
334 }
335
336
337 /**
338 * Enable GL_ARB_imaging and all the EXT extensions that are subsets of it.
339 */
340 void
341 _mesa_enable_imaging_extensions(GLcontext *ctx)
342 {
343 ctx->Extensions.ARB_imaging = GL_TRUE;
344 ctx->Extensions.EXT_blend_color = GL_TRUE;
345 ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
346 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
347 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
348 ctx->Extensions.EXT_convolution = GL_TRUE;
349 ctx->Extensions.EXT_histogram = GL_TRUE;
350 ctx->Extensions.SGI_color_matrix = GL_TRUE;
351 ctx->Extensions.SGI_color_table = GL_TRUE;
352 }
353
354
355
356 /**
357 * Enable all OpenGL 1.3 features and extensions.
358 * A convenience function to be called by drivers.
359 */
360 void
361 _mesa_enable_1_3_extensions(GLcontext *ctx)
362 {
363 /*ctx->Extensions.ARB_multisample = GL_TRUE;*/
364 ctx->Extensions.ARB_multitexture = GL_TRUE;
365 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE;
366 /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/
367 ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
368 ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
369 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
370 ctx->Extensions.EXT_texture_env_add = GL_TRUE;
371 /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/
372 }
373
374
375
376 /**
377 * Enable all OpenGL 1.4 features and extensions.
378 * A convenience function to be called by drivers.
379 */
380 void
381 _mesa_enable_1_4_extensions(GLcontext *ctx)
382 {
383 ctx->Extensions.ARB_depth_texture = GL_TRUE;
384 ctx->Extensions.ARB_shadow = GL_TRUE;
385 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
386 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
387 ctx->Extensions.ARB_window_pos = GL_TRUE;
388 ctx->Extensions.EXT_blend_color = GL_TRUE;
389 ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
390 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
391 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
392 ctx->Extensions.EXT_fog_coord = GL_TRUE;
393 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
394 ctx->Extensions.EXT_point_parameters = GL_TRUE;
395 ctx->Extensions.EXT_secondary_color = GL_TRUE;
396 ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
397 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
398 ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;
399 }
400
401
402 /**
403 * Enable all OpenGL 1.5 features and extensions.
404 * A convenience function to be called by drivers.
405 */
406 void
407 _mesa_enable_1_5_extensions(GLcontext *ctx)
408 {
409 ctx->Extensions.ARB_occlusion_query = GL_TRUE;
410 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
411 ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
412 }
413
414
415 /**
416 * Enable all OpenGL 2.0 features and extensions.
417 * A convenience function to be called by drivers.
418 */
419 void
420 _mesa_enable_2_0_extensions(GLcontext *ctx)
421 {
422 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
423 #if FEATURE_ARB_fragment_shader
424 ctx->Extensions.ARB_fragment_shader = GL_TRUE;
425 #endif
426 ctx->Extensions.ARB_point_sprite = GL_TRUE;
427 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
428 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
429 #if FEATURE_ARB_shader_objects
430 ctx->Extensions.ARB_shader_objects = GL_TRUE;
431 #endif
432 #if FEATURE_ARB_shading_language_100
433 ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
434 #endif
435 ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
436 #if FEATURE_ARB_vertex_shader
437 ctx->Extensions.ARB_vertex_shader = GL_TRUE;
438 #endif
439 }
440
441
442 /**
443 * Enable all OpenGL 2.1 features and extensions.
444 * A convenience function to be called by drivers.
445 */
446 void
447 _mesa_enable_2_1_extensions(GLcontext *ctx)
448 {
449 #if FEATURE_EXT_pixel_buffer_object
450 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
451 #endif
452 #if FEATURE_EXT_texture_sRGB
453 ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
454 #endif
455 #ifdef FEATURE_ARB_shading_language_120
456 ctx->Extensions.ARB_shading_language_120 = GL_TRUE;
457 #endif
458 }
459
460
461
462 /**
463 * Either enable or disable the named extension.
464 * \return GL_TRUE for success, GL_FALSE if invalid extension name
465 */
466 static GLboolean
467 set_extension( GLcontext *ctx, const char *name, GLboolean state )
468 {
469 GLboolean *base = (GLboolean *) &ctx->Extensions;
470 GLuint i;
471
472 if (ctx->Extensions.String) {
473 /* The string was already queried - can't change it now! */
474 _mesa_problem(ctx, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name);
475 return GL_FALSE;
476 }
477
478 for (i = 0 ; i < Elements(default_extensions) ; i++) {
479 if (_mesa_strcmp(default_extensions[i].name, name) == 0) {
480 if (default_extensions[i].flag_offset) {
481 GLboolean *enabled = base + default_extensions[i].flag_offset;
482 *enabled = state;
483 }
484 return GL_TRUE;
485 }
486 }
487 return GL_FALSE;
488 }
489
490
491 /**
492 * Enable the named extension.
493 * Typically called by drivers.
494 */
495 void
496 _mesa_enable_extension( GLcontext *ctx, const char *name )
497 {
498 if (!set_extension(ctx, name, GL_TRUE))
499 _mesa_problem(ctx, "Trying to enable unknown extension: %s", name);
500 }
501
502
503 /**
504 * Disable the named extension.
505 * XXX is this really needed???
506 */
507 void
508 _mesa_disable_extension( GLcontext *ctx, const char *name )
509 {
510 if (!set_extension(ctx, name, GL_FALSE))
511 _mesa_problem(ctx, "Trying to disable unknown extension: %s", name);
512 }
513
514
515 /**
516 * Test if the named extension is enabled in this context.
517 */
518 GLboolean
519 _mesa_extension_is_enabled( GLcontext *ctx, const char *name )
520 {
521 const GLboolean *base = (const GLboolean *) &ctx->Extensions;
522 GLuint i;
523
524 for (i = 0 ; i < Elements(default_extensions) ; i++) {
525 if (_mesa_strcmp(default_extensions[i].name, name) == 0) {
526 if (!default_extensions[i].flag_offset)
527 return GL_TRUE;
528 return *(base + default_extensions[i].flag_offset);
529 }
530 }
531 return GL_FALSE;
532 }
533
534
535 /**
536 * Append string 'b' onto string 'a'. Free 'a' and return new string.
537 */
538 static char *
539 append(const char *a, const char *b)
540 {
541 const GLuint aLen = a ? _mesa_strlen(a) : 0;
542 const GLuint bLen = b ? _mesa_strlen(b) : 0;
543 char *s = _mesa_calloc(aLen + bLen + 1);
544 if (s) {
545 if (a)
546 _mesa_memcpy(s, a, aLen);
547 if (b)
548 _mesa_memcpy(s + aLen, b, bLen);
549 s[aLen + bLen] = '\0';
550 }
551 if (a)
552 _mesa_free((void *) a);
553 return s;
554 }
555
556
557 /**
558 * Check the MESA_EXTENSION_OVERRIDE env var.
559 * For extension names that are recognized, turn them on. For extension
560 * names that are recognized and prefixed with '-', turn them off.
561 * Return a string of the unknown/leftover names.
562 */
563 static const char *
564 get_extension_override( GLcontext *ctx )
565 {
566 const char *envExt = _mesa_getenv("MESA_EXTENSION_OVERRIDE");
567 char *extraExt = NULL;
568 char ext[1000];
569 GLuint extLen = 0;
570 GLuint i;
571 GLboolean disableExt = GL_FALSE;
572
573 if (!envExt)
574 return NULL;
575
576 for (i = 0; ; i++) {
577 if (envExt[i] == '\0' || envExt[i] == ' ') {
578 /* terminate/process 'ext' if extLen > 0 */
579 if (extLen > 0) {
580 assert(extLen < sizeof(ext));
581 /* enable extension named by 'ext' */
582 ext[extLen] = 0;
583 if (!set_extension(ctx, ext, !disableExt)) {
584 /* unknown extension name, append it to extraExt */
585 if (extraExt) {
586 extraExt = append(extraExt, " ");
587 }
588 extraExt = append(extraExt, ext);
589 }
590 extLen = 0;
591 disableExt = GL_FALSE;
592 }
593 if (envExt[i] == '\0')
594 break;
595 }
596 else if (envExt[i] == '-') {
597 disableExt = GL_TRUE;
598 }
599 else {
600 /* accumulate this non-space character */
601 ext[extLen++] = envExt[i];
602 }
603 }
604
605 return extraExt;
606 }
607
608
609 /**
610 * Run through the default_extensions array above and set the
611 * ctx->Extensions.ARB/EXT_* flags accordingly.
612 * To be called during context initialization.
613 */
614 void
615 _mesa_init_extensions( GLcontext *ctx )
616 {
617 GLboolean *base = (GLboolean *) &ctx->Extensions;
618 GLuint i;
619
620 for (i = 0 ; i < Elements(default_extensions) ; i++) {
621 if (default_extensions[i].enabled &&
622 default_extensions[i].flag_offset) {
623 *(base + default_extensions[i].flag_offset) = GL_TRUE;
624 }
625 }
626 }
627
628
629 /**
630 * Construct the GL_EXTENSIONS string. Called the first time that
631 * glGetString(GL_EXTENSIONS) is called.
632 */
633 GLubyte *
634 _mesa_make_extension_string( GLcontext *ctx )
635 {
636 const GLboolean *base = (const GLboolean *) &ctx->Extensions;
637 const char *extraExt = get_extension_override(ctx);
638 GLuint extStrLen = 0;
639 char *s;
640 GLuint i;
641
642 /* first, compute length of the extension string */
643 for (i = 0 ; i < Elements(default_extensions) ; i++) {
644 if (!default_extensions[i].flag_offset ||
645 *(base + default_extensions[i].flag_offset)) {
646 extStrLen += (GLuint)_mesa_strlen(default_extensions[i].name) + 1;
647 }
648 }
649
650 if (extraExt)
651 extStrLen += _mesa_strlen(extraExt) + 1; /* +1 for space */
652
653 /* allocate the extension string */
654 s = (char *) _mesa_malloc(extStrLen);
655 if (!s)
656 return NULL;
657
658 /* second, build the extension string */
659 extStrLen = 0;
660 for (i = 0 ; i < Elements(default_extensions) ; i++) {
661 if (!default_extensions[i].flag_offset ||
662 *(base + default_extensions[i].flag_offset)) {
663 GLuint len = (GLuint)_mesa_strlen(default_extensions[i].name);
664 _mesa_memcpy(s + extStrLen, default_extensions[i].name, len);
665 extStrLen += len;
666 s[extStrLen] = ' ';
667 extStrLen++;
668 }
669 }
670 ASSERT(extStrLen > 0);
671
672 s[extStrLen - 1] = 0; /* -1 to overwrite trailing the ' ' */
673
674 if (extraExt) {
675 s = append(s, " ");
676 s = append(s, extraExt);
677 }
678
679 return (GLubyte *) s;
680 }