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Merge branch 'gallium-msaa'
[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 "mtypes.h"
32
33
34 #define F(x) offsetof(struct gl_extensions, x)
35 #define ON GL_TRUE
36 #define OFF GL_FALSE
37
38
39 /*
40 * Note: The GL_MESAX_* extensions are placeholders for future ARB extensions.
41 */
42 static const struct {
43 GLboolean enabled;
44 const char *name;
45 int flag_offset;
46 } default_extensions[] = {
47 { OFF, "GL_ARB_copy_buffer", F(ARB_copy_buffer) },
48 { OFF, "GL_ARB_depth_texture", F(ARB_depth_texture) },
49 { OFF, "GL_ARB_depth_clamp", F(ARB_depth_clamp) },
50 { ON, "GL_ARB_draw_buffers", F(ARB_draw_buffers) },
51 { OFF, "GL_ARB_draw_elements_base_vertex", F(ARB_draw_elements_base_vertex) },
52 { OFF, "GL_ARB_draw_instanced", F(ARB_draw_instanced) },
53 { OFF, "GL_ARB_fragment_coord_conventions", F(ARB_fragment_coord_conventions) },
54 { OFF, "GL_ARB_fragment_program", F(ARB_fragment_program) },
55 { OFF, "GL_ARB_fragment_program_shadow", F(ARB_fragment_program_shadow) },
56 { OFF, "GL_ARB_fragment_shader", F(ARB_fragment_shader) },
57 { OFF, "GL_ARB_framebuffer_object", F(ARB_framebuffer_object) },
58 { OFF, "GL_ARB_half_float_pixel", F(ARB_half_float_pixel) },
59 { OFF, "GL_ARB_half_float_vertex", F(ARB_half_float_vertex) },
60 { OFF, "GL_ARB_imaging", F(ARB_imaging) },
61 { OFF, "GL_ARB_map_buffer_range", F(ARB_map_buffer_range) },
62 { ON, "GL_ARB_multisample", F(ARB_multisample) },
63 { OFF, "GL_ARB_multitexture", F(ARB_multitexture) },
64 { OFF, "GL_ARB_occlusion_query", F(ARB_occlusion_query) },
65 { OFF, "GL_ARB_pixel_buffer_object", F(EXT_pixel_buffer_object) },
66 { OFF, "GL_ARB_point_parameters", F(EXT_point_parameters) },
67 { OFF, "GL_ARB_point_sprite", F(ARB_point_sprite) },
68 { OFF, "GL_ARB_provoking_vertex", F(EXT_provoking_vertex) },
69 { OFF, "GL_ARB_seamless_cube_map", F(ARB_seamless_cube_map) },
70 { OFF, "GL_ARB_shader_objects", F(ARB_shader_objects) },
71 { OFF, "GL_ARB_shading_language_100", F(ARB_shading_language_100) },
72 { OFF, "GL_ARB_shading_language_120", F(ARB_shading_language_120) },
73 { OFF, "GL_ARB_shadow", F(ARB_shadow) },
74 { OFF, "GL_ARB_shadow_ambient", F(ARB_shadow_ambient) },
75 { OFF, "GL_ARB_sync", F(ARB_sync) },
76 { OFF, "GL_ARB_texture_border_clamp", F(ARB_texture_border_clamp) },
77 { ON, "GL_ARB_texture_compression", F(ARB_texture_compression) },
78 { OFF, "GL_ARB_texture_cube_map", F(ARB_texture_cube_map) },
79 { OFF, "GL_ARB_texture_env_add", F(EXT_texture_env_add) },
80 { OFF, "GL_ARB_texture_env_combine", F(ARB_texture_env_combine) },
81 { OFF, "GL_ARB_texture_env_crossbar", F(ARB_texture_env_crossbar) },
82 { OFF, "GL_ARB_texture_env_dot3", F(ARB_texture_env_dot3) },
83 { OFF, "GL_MESAX_texture_float", F(ARB_texture_float) },
84 { OFF, "GL_ARB_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
85 { OFF, "GL_ARB_texture_non_power_of_two", F(ARB_texture_non_power_of_two)},
86 { OFF, "GL_ARB_texture_rectangle", F(NV_texture_rectangle) },
87 { ON, "GL_ARB_transpose_matrix", F(ARB_transpose_matrix) },
88 { OFF, "GL_ARB_transform_feedback2", F(ARB_transform_feedback2) },
89 { OFF, "GL_ARB_vertex_array_bgra", F(EXT_vertex_array_bgra) },
90 { OFF, "GL_ARB_vertex_array_object", F(ARB_vertex_array_object) },
91 { ON, "GL_ARB_vertex_buffer_object", F(ARB_vertex_buffer_object) },
92 { OFF, "GL_ARB_vertex_program", F(ARB_vertex_program) },
93 { OFF, "GL_ARB_vertex_shader", F(ARB_vertex_shader) },
94 { ON, "GL_ARB_window_pos", F(ARB_window_pos) },
95 { ON, "GL_EXT_abgr", F(EXT_abgr) },
96 { ON, "GL_EXT_bgra", F(EXT_bgra) },
97 { OFF, "GL_EXT_blend_color", F(EXT_blend_color) },
98 { OFF, "GL_EXT_blend_equation_separate", F(EXT_blend_equation_separate) },
99 { OFF, "GL_EXT_blend_func_separate", F(EXT_blend_func_separate) },
100 { OFF, "GL_EXT_blend_logic_op", F(EXT_blend_logic_op) },
101 { OFF, "GL_EXT_blend_minmax", F(EXT_blend_minmax) },
102 { OFF, "GL_EXT_blend_subtract", F(EXT_blend_subtract) },
103 { OFF, "GL_EXT_clip_volume_hint", F(EXT_clip_volume_hint) },
104 { OFF, "GL_EXT_cull_vertex", F(EXT_cull_vertex) },
105 { ON, "GL_EXT_compiled_vertex_array", F(EXT_compiled_vertex_array) },
106 { OFF, "GL_EXT_convolution", F(EXT_convolution) },
107 { ON, "GL_EXT_copy_texture", F(EXT_copy_texture) },
108 { OFF, "GL_EXT_depth_bounds_test", F(EXT_depth_bounds_test) },
109 { OFF, "GL_EXT_draw_buffers2", F(EXT_draw_buffers2) },
110 { OFF, "GL_EXT_draw_instanced", F(ARB_draw_instanced) },
111 { ON, "GL_EXT_draw_range_elements", F(EXT_draw_range_elements) },
112 { OFF, "GL_EXT_framebuffer_blit", F(EXT_framebuffer_blit) },
113 { OFF, "GL_EXT_framebuffer_multisample", F(EXT_framebuffer_multisample) },
114 { OFF, "GL_EXT_framebuffer_object", F(EXT_framebuffer_object) },
115 { OFF, "GL_EXT_fog_coord", F(EXT_fog_coord) },
116 { OFF, "GL_EXT_gpu_program_parameters", F(EXT_gpu_program_parameters) },
117 { OFF, "GL_EXT_histogram", F(EXT_histogram) },
118 { ON, "GL_EXT_multi_draw_arrays", F(EXT_multi_draw_arrays) },
119 { OFF, "GL_EXT_packed_depth_stencil", F(EXT_packed_depth_stencil) },
120 { ON, "GL_EXT_packed_pixels", F(EXT_packed_pixels) },
121 { OFF, "GL_EXT_paletted_texture", F(EXT_paletted_texture) },
122 { OFF, "GL_EXT_pixel_buffer_object", F(EXT_pixel_buffer_object) },
123 { OFF, "GL_EXT_point_parameters", F(EXT_point_parameters) },
124 { ON, "GL_EXT_polygon_offset", F(EXT_polygon_offset) },
125 { OFF, "GL_EXT_provoking_vertex", F(EXT_provoking_vertex) },
126 { ON, "GL_EXT_rescale_normal", F(EXT_rescale_normal) },
127 { OFF, "GL_EXT_secondary_color", F(EXT_secondary_color) },
128 { ON, "GL_EXT_separate_specular_color", F(EXT_separate_specular_color) },
129 { OFF, "GL_EXT_shadow_funcs", F(EXT_shadow_funcs) },
130 { OFF, "GL_EXT_shared_texture_palette", F(EXT_shared_texture_palette) },
131 { OFF, "GL_EXT_stencil_two_side", F(EXT_stencil_two_side) },
132 { OFF, "GL_EXT_stencil_wrap", F(EXT_stencil_wrap) },
133 { ON, "GL_EXT_subtexture", F(EXT_subtexture) },
134 { ON, "GL_EXT_texture", F(EXT_texture) },
135 { ON, "GL_EXT_texture3D", F(EXT_texture3D) },
136 { OFF, "GL_EXT_texture_array", F(EXT_texture_array) },
137 { OFF, "GL_EXT_texture_compression_s3tc", F(EXT_texture_compression_s3tc) },
138 { OFF, "GL_EXT_texture_cube_map", F(ARB_texture_cube_map) },
139 { ON, "GL_EXT_texture_edge_clamp", F(SGIS_texture_edge_clamp) },
140 { OFF, "GL_EXT_texture_env_add", F(EXT_texture_env_add) },
141 { OFF, "GL_EXT_texture_env_combine", F(EXT_texture_env_combine) },
142 { OFF, "GL_EXT_texture_env_dot3", F(EXT_texture_env_dot3) },
143 { OFF, "GL_EXT_texture_filter_anisotropic", F(EXT_texture_filter_anisotropic) },
144 { OFF, "GL_EXT_texture_lod_bias", F(EXT_texture_lod_bias) },
145 { OFF, "GL_EXT_texture_mirror_clamp", F(EXT_texture_mirror_clamp) },
146 { ON, "GL_EXT_texture_object", F(EXT_texture_object) },
147 { OFF, "GL_EXT_texture_rectangle", F(NV_texture_rectangle) },
148 { OFF, "GL_EXT_texture_sRGB", F(EXT_texture_sRGB) },
149 { OFF, "GL_EXT_texture_swizzle", F(EXT_texture_swizzle) },
150 { OFF, "GL_EXT_timer_query", F(EXT_timer_query) },
151 { OFF, "GL_EXT_transform_feedback", F(EXT_transform_feedback) },
152 { ON, "GL_EXT_vertex_array", F(EXT_vertex_array) },
153 { OFF, "GL_EXT_vertex_array_bgra", F(EXT_vertex_array_bgra) },
154 { OFF, "GL_EXT_vertex_array_set", F(EXT_vertex_array_set) },
155 { OFF, "GL_3DFX_texture_compression_FXT1", F(TDFX_texture_compression_FXT1) },
156 { OFF, "GL_APPLE_client_storage", F(APPLE_client_storage) },
157 { ON, "GL_APPLE_packed_pixels", F(APPLE_packed_pixels) },
158 { OFF, "GL_APPLE_vertex_array_object", F(APPLE_vertex_array_object) },
159 { OFF, "GL_APPLE_object_purgeable", F(APPLE_object_purgeable) },
160 { OFF, "GL_ATI_blend_equation_separate", F(EXT_blend_equation_separate) },
161 { OFF, "GL_ATI_envmap_bumpmap", F(ATI_envmap_bumpmap) },
162 { OFF, "GL_ATI_texture_env_combine3", F(ATI_texture_env_combine3)},
163 { OFF, "GL_ATI_texture_mirror_once", F(ATI_texture_mirror_once)},
164 { OFF, "GL_ATI_fragment_shader", F(ATI_fragment_shader)},
165 { OFF, "GL_ATI_separate_stencil", F(ATI_separate_stencil)},
166 { ON, "GL_IBM_multimode_draw_arrays", F(IBM_multimode_draw_arrays) },
167 { ON, "GL_IBM_rasterpos_clip", F(IBM_rasterpos_clip) },
168 { OFF, "GL_IBM_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
169 { OFF, "GL_INGR_blend_func_separate", F(EXT_blend_func_separate) },
170 { OFF, "GL_MESA_pack_invert", F(MESA_pack_invert) },
171 { OFF, "GL_MESA_packed_depth_stencil", F(MESA_packed_depth_stencil) },
172 { OFF, "GL_MESA_resize_buffers", F(MESA_resize_buffers) },
173 { OFF, "GL_MESA_texture_array", F(MESA_texture_array) },
174 { OFF, "GL_MESA_texture_signed_rgba", F(MESA_texture_signed_rgba) },
175 { OFF, "GL_MESA_ycbcr_texture", F(MESA_ycbcr_texture) },
176 { ON, "GL_MESA_window_pos", F(ARB_window_pos) },
177 { OFF, "GL_NV_blend_square", F(NV_blend_square) },
178 { OFF, "GL_NV_conditional_render", F(NV_conditional_render) },
179 { OFF, "GL_NV_depth_clamp", F(ARB_depth_clamp) },
180 { OFF, "GL_NV_fragment_program", F(NV_fragment_program) },
181 { OFF, "GL_NV_fragment_program_option", F(NV_fragment_program_option) },
182 { ON, "GL_NV_light_max_exponent", F(NV_light_max_exponent) },
183 { OFF, "GL_NV_packed_depth_stencil", F(EXT_packed_depth_stencil) },
184 { OFF, "GL_NV_point_sprite", F(NV_point_sprite) },
185 { OFF, "GL_NV_texture_env_combine4", F(NV_texture_env_combine4) },
186 { OFF, "GL_NV_texture_rectangle", F(NV_texture_rectangle) },
187 { ON, "GL_NV_texgen_reflection", F(NV_texgen_reflection) },
188 { OFF, "GL_NV_vertex_program", F(NV_vertex_program) },
189 { OFF, "GL_NV_vertex_program1_1", F(NV_vertex_program1_1) },
190 { ON, "GL_OES_read_format", F(OES_read_format) },
191 { OFF, "GL_SGI_color_matrix", F(SGI_color_matrix) },
192 { OFF, "GL_SGI_color_table", F(SGI_color_table) },
193 { OFF, "GL_SGI_texture_color_table", F(SGI_texture_color_table) },
194 { OFF, "GL_SGIS_generate_mipmap", F(SGIS_generate_mipmap) },
195 { OFF, "GL_SGIS_texture_border_clamp", F(ARB_texture_border_clamp) },
196 { ON, "GL_SGIS_texture_edge_clamp", F(SGIS_texture_edge_clamp) },
197 { ON, "GL_SGIS_texture_lod", F(SGIS_texture_lod) },
198 { ON, "GL_SUN_multi_draw_arrays", F(EXT_multi_draw_arrays) },
199 { OFF, "GL_S3_s3tc", F(S3_s3tc) },
200 #if FEATURE_OES_EGL_image
201 { OFF, "GL_OES_EGL_image", F(OES_EGL_image) },
202 #endif
203 #if FEATURE_OES_draw_texture
204 { OFF, "GL_OES_draw_texture", F(OES_draw_texture) },
205 #endif /* FEATURE_OES_draw_texture */
206 };
207
208
209
210 /**
211 * Enable all extensions suitable for a software-only renderer.
212 * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc.
213 */
214 void
215 _mesa_enable_sw_extensions(GLcontext *ctx)
216 {
217 ctx->Extensions.ARB_copy_buffer = GL_TRUE;
218 ctx->Extensions.ARB_depth_clamp = GL_TRUE;
219 ctx->Extensions.ARB_depth_texture = GL_TRUE;
220 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
221 ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
222 ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
223 #if FEATURE_ARB_fragment_program
224 ctx->Extensions.ARB_fragment_program = GL_TRUE;
225 ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
226 #endif
227 #if FEATURE_ARB_fragment_shader
228 ctx->Extensions.ARB_fragment_shader = GL_TRUE;
229 #endif
230 #if FEATURE_ARB_framebuffer_object
231 ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
232 #endif
233 ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
234 ctx->Extensions.ARB_half_float_vertex = GL_TRUE;
235 ctx->Extensions.ARB_imaging = GL_TRUE;
236 ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
237 ctx->Extensions.ARB_multitexture = GL_TRUE;
238 #if FEATURE_queryobj
239 ctx->Extensions.ARB_occlusion_query = GL_TRUE;
240 #endif
241 ctx->Extensions.ARB_point_sprite = GL_TRUE;
242 #if FEATURE_ARB_shader_objects
243 ctx->Extensions.ARB_shader_objects = GL_TRUE;
244 #endif
245 #if FEATURE_ARB_shading_language_100
246 ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
247 #endif
248 #if FEATURE_ARB_shading_language_120
249 ctx->Extensions.ARB_shading_language_120 = GL_TRUE;
250 #endif
251 ctx->Extensions.ARB_shadow = GL_TRUE;
252 ctx->Extensions.ARB_shadow_ambient = GL_TRUE;
253 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE;
254 ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
255 ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
256 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
257 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
258 /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/
259 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
260 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
261 ctx->Extensions.ARB_vertex_array_object = GL_TRUE;
262 #if FEATURE_ARB_vertex_program
263 ctx->Extensions.ARB_vertex_program = GL_TRUE;
264 #endif
265 #if FEATURE_ARB_vertex_shader
266 ctx->Extensions.ARB_vertex_shader = GL_TRUE;
267 #endif
268 #if FEATURE_ARB_vertex_buffer_object
269 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
270 #endif
271 #if FEATURE_ARB_sync
272 ctx->Extensions.ARB_sync = GL_TRUE;
273 #endif
274 ctx->Extensions.APPLE_vertex_array_object = GL_TRUE;
275 #if FEATURE_APPLE_object_purgeable
276 ctx->Extensions.APPLE_object_purgeable = GL_TRUE;
277 #endif
278 ctx->Extensions.ATI_envmap_bumpmap = GL_TRUE;
279 #if FEATURE_ATI_fragment_shader
280 ctx->Extensions.ATI_fragment_shader = GL_TRUE;
281 #endif
282 ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;
283 ctx->Extensions.ATI_texture_mirror_once = GL_TRUE;
284 ctx->Extensions.ATI_separate_stencil = GL_TRUE;
285 ctx->Extensions.EXT_blend_color = GL_TRUE;
286 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
287 ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
288 ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
289 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
290 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
291 ctx->Extensions.EXT_convolution = GL_TRUE;
292 ctx->Extensions.EXT_depth_bounds_test = GL_TRUE;
293 ctx->Extensions.EXT_draw_buffers2 = GL_TRUE;
294 ctx->Extensions.EXT_fog_coord = GL_TRUE;
295 #if FEATURE_EXT_framebuffer_object
296 ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
297 #endif
298 #if FEATURE_EXT_framebuffer_blit
299 ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
300 #endif
301 #if FEATURE_ARB_framebuffer_object
302 ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
303 #endif
304 ctx->Extensions.EXT_histogram = GL_TRUE;
305 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
306 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
307 ctx->Extensions.EXT_paletted_texture = GL_TRUE;
308 #if FEATURE_EXT_pixel_buffer_object
309 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
310 #endif
311 ctx->Extensions.EXT_point_parameters = GL_TRUE;
312 ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
313 ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
314 ctx->Extensions.EXT_secondary_color = GL_TRUE;
315 ctx->Extensions.EXT_shared_texture_palette = GL_TRUE;
316 ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
317 ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
318 ctx->Extensions.EXT_texture_array = GL_TRUE;
319 ctx->Extensions.EXT_texture_env_add = GL_TRUE;
320 ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
321 ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
322 ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
323 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
324 #if FEATURE_EXT_texture_sRGB
325 ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
326 #endif
327 ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
328 #if FEATURE_EXT_transform_feedback
329 /*ctx->Extensions.EXT_transform_feedback = GL_TRUE;*/
330 #endif
331 ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
332 /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/
333 ctx->Extensions.MESA_pack_invert = GL_TRUE;
334 ctx->Extensions.MESA_resize_buffers = GL_TRUE;
335 ctx->Extensions.MESA_texture_array = GL_TRUE;
336 ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
337 ctx->Extensions.NV_blend_square = GL_TRUE;
338 ctx->Extensions.NV_conditional_render = GL_TRUE;
339 /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/
340 ctx->Extensions.NV_point_sprite = GL_TRUE;
341 ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
342 ctx->Extensions.NV_texture_rectangle = GL_TRUE;
343 /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/
344 #if FEATURE_NV_vertex_program
345 ctx->Extensions.NV_vertex_program = GL_TRUE;
346 ctx->Extensions.NV_vertex_program1_1 = GL_TRUE;
347 #endif
348 #if FEATURE_NV_fragment_program
349 ctx->Extensions.NV_fragment_program = GL_TRUE;
350 #endif
351 #if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program
352 ctx->Extensions.NV_fragment_program_option = GL_TRUE;
353 #endif
354 ctx->Extensions.SGI_color_matrix = GL_TRUE;
355 ctx->Extensions.SGI_color_table = GL_TRUE;
356 ctx->Extensions.SGI_texture_color_table = GL_TRUE;
357 ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;
358 ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE;
359 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
360 ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
361 #endif
362 #if FEATURE_texture_fxt1
363 _mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1");
364 #endif
365 #if FEATURE_texture_s3tc
366 if (ctx->Mesa_DXTn) {
367 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
368 _mesa_enable_extension(ctx, "GL_S3_s3tc");
369 }
370 #endif
371 }
372
373
374 /**
375 * Enable GL_ARB_imaging and all the EXT extensions that are subsets of it.
376 */
377 void
378 _mesa_enable_imaging_extensions(GLcontext *ctx)
379 {
380 ctx->Extensions.ARB_imaging = GL_TRUE;
381 ctx->Extensions.EXT_blend_color = GL_TRUE;
382 ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
383 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
384 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
385 ctx->Extensions.EXT_convolution = GL_TRUE;
386 ctx->Extensions.EXT_histogram = GL_TRUE;
387 ctx->Extensions.SGI_color_matrix = GL_TRUE;
388 ctx->Extensions.SGI_color_table = GL_TRUE;
389 }
390
391
392
393 /**
394 * Enable all OpenGL 1.3 features and extensions.
395 * A convenience function to be called by drivers.
396 */
397 void
398 _mesa_enable_1_3_extensions(GLcontext *ctx)
399 {
400 /*ctx->Extensions.ARB_multisample = GL_TRUE;*/
401 ctx->Extensions.ARB_multitexture = GL_TRUE;
402 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE;
403 /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/
404 ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
405 ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
406 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
407 ctx->Extensions.EXT_texture_env_add = GL_TRUE;
408 /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/
409 }
410
411
412
413 /**
414 * Enable all OpenGL 1.4 features and extensions.
415 * A convenience function to be called by drivers.
416 */
417 void
418 _mesa_enable_1_4_extensions(GLcontext *ctx)
419 {
420 ctx->Extensions.ARB_depth_texture = GL_TRUE;
421 ctx->Extensions.ARB_shadow = GL_TRUE;
422 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
423 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
424 ctx->Extensions.ARB_window_pos = GL_TRUE;
425 ctx->Extensions.EXT_blend_color = GL_TRUE;
426 ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
427 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
428 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
429 ctx->Extensions.EXT_fog_coord = GL_TRUE;
430 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
431 ctx->Extensions.EXT_point_parameters = GL_TRUE;
432 ctx->Extensions.EXT_secondary_color = GL_TRUE;
433 ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
434 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
435 ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;
436 }
437
438
439 /**
440 * Enable all OpenGL 1.5 features and extensions.
441 * A convenience function to be called by drivers.
442 */
443 void
444 _mesa_enable_1_5_extensions(GLcontext *ctx)
445 {
446 ctx->Extensions.ARB_occlusion_query = GL_TRUE;
447 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
448 ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
449 }
450
451
452 /**
453 * Enable all OpenGL 2.0 features and extensions.
454 * A convenience function to be called by drivers.
455 */
456 void
457 _mesa_enable_2_0_extensions(GLcontext *ctx)
458 {
459 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
460 #if FEATURE_ARB_fragment_shader
461 ctx->Extensions.ARB_fragment_shader = GL_TRUE;
462 #endif
463 ctx->Extensions.ARB_point_sprite = GL_TRUE;
464 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
465 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
466 #if FEATURE_ARB_shader_objects
467 ctx->Extensions.ARB_shader_objects = GL_TRUE;
468 #endif
469 #if FEATURE_ARB_shading_language_100
470 ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
471 #endif
472 ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
473 #if FEATURE_ARB_vertex_shader
474 ctx->Extensions.ARB_vertex_shader = GL_TRUE;
475 #endif
476 }
477
478
479 /**
480 * Enable all OpenGL 2.1 features and extensions.
481 * A convenience function to be called by drivers.
482 */
483 void
484 _mesa_enable_2_1_extensions(GLcontext *ctx)
485 {
486 #if FEATURE_EXT_pixel_buffer_object
487 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
488 #endif
489 #if FEATURE_EXT_texture_sRGB
490 ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
491 #endif
492 #if FEATURE_ARB_shading_language_120
493 ctx->Extensions.ARB_shading_language_120 = GL_TRUE;
494 #endif
495 }
496
497
498 /**
499 * Either enable or disable the named extension.
500 * \return GL_TRUE for success, GL_FALSE if invalid extension name
501 */
502 static GLboolean
503 set_extension( GLcontext *ctx, const char *name, GLboolean state )
504 {
505 GLboolean *base = (GLboolean *) &ctx->Extensions;
506 GLuint i;
507
508 if (ctx->Extensions.String) {
509 /* The string was already queried - can't change it now! */
510 _mesa_problem(ctx, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name);
511 return GL_FALSE;
512 }
513
514 for (i = 0 ; i < Elements(default_extensions) ; i++) {
515 if (strcmp(default_extensions[i].name, name) == 0) {
516 if (default_extensions[i].flag_offset) {
517 GLboolean *enabled = base + default_extensions[i].flag_offset;
518 *enabled = state;
519 }
520 return GL_TRUE;
521 }
522 }
523 return GL_FALSE;
524 }
525
526
527 /**
528 * Enable the named extension.
529 * Typically called by drivers.
530 */
531 void
532 _mesa_enable_extension( GLcontext *ctx, const char *name )
533 {
534 if (!set_extension(ctx, name, GL_TRUE))
535 _mesa_problem(ctx, "Trying to enable unknown extension: %s", name);
536 }
537
538
539 /**
540 * Disable the named extension.
541 * XXX is this really needed???
542 */
543 void
544 _mesa_disable_extension( GLcontext *ctx, const char *name )
545 {
546 if (!set_extension(ctx, name, GL_FALSE))
547 _mesa_problem(ctx, "Trying to disable unknown extension: %s", name);
548 }
549
550
551 /**
552 * Check if the i-th extension is enabled.
553 */
554 static GLboolean
555 extension_enabled(GLcontext *ctx, GLuint index)
556 {
557 const GLboolean *base = (const GLboolean *) &ctx->Extensions;
558 if (!default_extensions[index].flag_offset ||
559 *(base + default_extensions[index].flag_offset)) {
560 return GL_TRUE;
561 }
562 else {
563 return GL_FALSE;
564 }
565 }
566
567
568 /**
569 * Test if the named extension is enabled in this context.
570 */
571 GLboolean
572 _mesa_extension_is_enabled( GLcontext *ctx, const char *name )
573 {
574 GLuint i;
575
576 for (i = 0 ; i < Elements(default_extensions) ; i++) {
577 if (strcmp(default_extensions[i].name, name) == 0) {
578 return extension_enabled(ctx, i);
579 }
580 }
581 return GL_FALSE;
582 }
583
584
585 /**
586 * Append string 'b' onto string 'a'. Free 'a' and return new string.
587 */
588 static char *
589 append(const char *a, const char *b)
590 {
591 const GLuint aLen = a ? strlen(a) : 0;
592 const GLuint bLen = b ? strlen(b) : 0;
593 char *s = calloc(1, aLen + bLen + 1);
594 if (s) {
595 if (a)
596 memcpy(s, a, aLen);
597 if (b)
598 memcpy(s + aLen, b, bLen);
599 s[aLen + bLen] = '\0';
600 }
601 if (a)
602 free((void *) a);
603 return s;
604 }
605
606
607 /**
608 * Check the MESA_EXTENSION_OVERRIDE env var.
609 * For extension names that are recognized, turn them on. For extension
610 * names that are recognized and prefixed with '-', turn them off.
611 * Return a string of the unknown/leftover names.
612 */
613 static const char *
614 get_extension_override( GLcontext *ctx )
615 {
616 const char *envExt = _mesa_getenv("MESA_EXTENSION_OVERRIDE");
617 char *extraExt = NULL;
618 char ext[1000];
619 GLuint extLen = 0;
620 GLuint i;
621 GLboolean disableExt = GL_FALSE;
622
623 if (!envExt)
624 return NULL;
625
626 for (i = 0; ; i++) {
627 if (envExt[i] == '\0' || envExt[i] == ' ') {
628 /* terminate/process 'ext' if extLen > 0 */
629 if (extLen > 0) {
630 assert(extLen < sizeof(ext));
631 /* enable extension named by 'ext' */
632 ext[extLen] = 0;
633 if (!set_extension(ctx, ext, !disableExt)) {
634 /* unknown extension name, append it to extraExt */
635 if (extraExt) {
636 extraExt = append(extraExt, " ");
637 }
638 extraExt = append(extraExt, ext);
639 }
640 extLen = 0;
641 disableExt = GL_FALSE;
642 }
643 if (envExt[i] == '\0')
644 break;
645 }
646 else if (envExt[i] == '-') {
647 disableExt = GL_TRUE;
648 }
649 else {
650 /* accumulate this non-space character */
651 ext[extLen++] = envExt[i];
652 }
653 }
654
655 return extraExt;
656 }
657
658
659 /**
660 * Run through the default_extensions array above and set the
661 * ctx->Extensions.ARB/EXT_* flags accordingly.
662 * To be called during context initialization.
663 */
664 void
665 _mesa_init_extensions( GLcontext *ctx )
666 {
667 GLboolean *base = (GLboolean *) &ctx->Extensions;
668 GLuint i;
669
670 for (i = 0 ; i < Elements(default_extensions) ; i++) {
671 if (default_extensions[i].enabled &&
672 default_extensions[i].flag_offset) {
673 *(base + default_extensions[i].flag_offset) = GL_TRUE;
674 }
675 }
676 }
677
678
679 /**
680 * Construct the GL_EXTENSIONS string. Called the first time that
681 * glGetString(GL_EXTENSIONS) is called.
682 */
683 static GLubyte *
684 compute_extensions( GLcontext *ctx )
685 {
686 const char *extraExt = get_extension_override(ctx);
687 GLuint extStrLen = 0;
688 char *s;
689 GLuint i;
690
691 /* first, compute length of the extension string */
692 for (i = 0 ; i < Elements(default_extensions) ; i++) {
693 if (extension_enabled(ctx, i)) {
694 extStrLen += (GLuint) strlen(default_extensions[i].name) + 1;
695 }
696 }
697
698 if (extraExt)
699 extStrLen += strlen(extraExt) + 1; /* +1 for space */
700
701 /* allocate the extension string */
702 s = (char *) malloc(extStrLen);
703 if (!s)
704 return NULL;
705
706 /* second, build the extension string */
707 extStrLen = 0;
708 for (i = 0 ; i < Elements(default_extensions) ; i++) {
709 if (extension_enabled(ctx, i)) {
710 GLuint len = (GLuint) strlen(default_extensions[i].name);
711 memcpy(s + extStrLen, default_extensions[i].name, len);
712 extStrLen += len;
713 s[extStrLen] = ' ';
714 extStrLen++;
715 }
716 }
717 ASSERT(extStrLen > 0);
718
719 s[extStrLen - 1] = 0; /* -1 to overwrite trailing the ' ' */
720
721 if (extraExt) {
722 s = append(s, " ");
723 s = append(s, extraExt);
724 }
725
726 return (GLubyte *) s;
727 }
728
729 static size_t
730 append_extension(GLubyte **str, const char *ext)
731 {
732 GLubyte *s = *str;
733 size_t len = strlen(ext);
734
735 if (s) {
736 memcpy(s, ext, len);
737 s[len++] = ' ';
738 s[len] = '\0';
739
740 *str += len;
741 }
742 else {
743 len++;
744 }
745
746 return len;
747 }
748
749
750 static size_t
751 make_extension_string_es1(const GLcontext *ctx, GLubyte *str)
752 {
753 size_t len = 0;
754
755 /* Core additions */
756 len += append_extension(&str, "GL_OES_byte_coordinates");
757 len += append_extension(&str, "GL_OES_fixed_point");
758 len += append_extension(&str, "GL_OES_single_precision");
759 len += append_extension(&str, "GL_OES_matrix_get");
760
761 /* 1.1 required extensions */
762 len += append_extension(&str, "GL_OES_read_format");
763 len += append_extension(&str, "GL_OES_compressed_paletted_texture");
764 len += append_extension(&str, "GL_OES_point_size_array");
765 len += append_extension(&str, "GL_OES_point_sprite");
766
767 /* 1.1 deprecated extensions */
768 len += append_extension(&str, "GL_OES_query_matrix");
769
770 #if FEATURE_OES_draw_texture
771 if (ctx->Extensions.OES_draw_texture)
772 len += append_extension(&str, "GL_OES_draw_texture");
773 #endif
774
775 if (ctx->Extensions.EXT_blend_equation_separate)
776 len += append_extension(&str, "GL_OES_blend_equation_separate");
777 if (ctx->Extensions.EXT_blend_func_separate)
778 len += append_extension(&str, "GL_OES_blend_func_separate");
779 if (ctx->Extensions.EXT_blend_subtract)
780 len += append_extension(&str, "GL_OES_blend_subtract");
781
782 if (ctx->Extensions.EXT_stencil_wrap)
783 len += append_extension(&str, "GL_OES_stencil_wrap");
784
785 if (ctx->Extensions.ARB_texture_cube_map)
786 len += append_extension(&str, "GL_OES_texture_cube_map");
787 if (ctx->Extensions.ARB_texture_env_crossbar)
788 len += append_extension(&str, "GL_OES_texture_env_crossbar");
789 if (ctx->Extensions.ARB_texture_mirrored_repeat)
790 len += append_extension(&str, "GL_OES_texture_mirrored_repeat");
791
792 if (ctx->Extensions.ARB_framebuffer_object) {
793 len += append_extension(&str, "GL_OES_framebuffer_object");
794 len += append_extension(&str, "GL_OES_depth24");
795 len += append_extension(&str, "GL_OES_depth32");
796 len += append_extension(&str, "GL_OES_fbo_render_mipmap");
797 len += append_extension(&str, "GL_OES_rgb8_rgba8");
798 len += append_extension(&str, "GL_OES_stencil1");
799 len += append_extension(&str, "GL_OES_stencil4");
800 len += append_extension(&str, "GL_OES_stencil8");
801 }
802
803 if (ctx->Extensions.EXT_vertex_array)
804 len += append_extension(&str, "GL_OES_element_index_uint");
805 if (ctx->Extensions.ARB_vertex_buffer_object)
806 len += append_extension(&str, "GL_OES_mapbuffer");
807 if (ctx->Extensions.EXT_texture_filter_anisotropic)
808 len += append_extension(&str, "GL_EXT_texture_filter_anisotropic");
809
810 /* some applications check this for NPOT support */
811 if (ctx->Extensions.ARB_texture_non_power_of_two)
812 len += append_extension(&str, "GL_ARB_texture_non_power_of_two");
813
814 if (ctx->Extensions.EXT_texture_compression_s3tc)
815 len += append_extension(&str, "GL_EXT_texture_compression_dxt1");
816 if (ctx->Extensions.EXT_texture_lod_bias)
817 len += append_extension(&str, "GL_EXT_texture_lod_bias");
818 if (ctx->Extensions.EXT_blend_minmax)
819 len += append_extension(&str, "GL_EXT_blend_minmax");
820 if (ctx->Extensions.EXT_multi_draw_arrays)
821 len += append_extension(&str, "GL_EXT_multi_draw_arrays");
822
823 #if FEATURE_OES_EGL_image
824 if (ctx->Extensions.OES_EGL_image)
825 len += append_extension(&str, "GL_OES_EGL_image");
826 #endif
827
828 return len;
829 }
830
831
832 static GLubyte *
833 compute_extensions_es1(const GLcontext *ctx)
834 {
835 GLubyte *s;
836 unsigned int len;
837
838 len = make_extension_string_es1(ctx, NULL);
839 s = malloc(len + 1);
840 if (!s)
841 return NULL;
842 make_extension_string_es1(ctx, s);
843
844 return s;
845 }
846
847 static size_t
848 make_extension_string_es2(const GLcontext *ctx, GLubyte *str)
849 {
850 size_t len = 0;
851
852 len += append_extension(&str, "GL_OES_compressed_paletted_texture");
853
854 if (ctx->Extensions.ARB_framebuffer_object) {
855 len += append_extension(&str, "GL_OES_depth24");
856 len += append_extension(&str, "GL_OES_depth32");
857 len += append_extension(&str, "GL_OES_fbo_render_mipmap");
858 len += append_extension(&str, "GL_OES_rgb8_rgba8");
859 len += append_extension(&str, "GL_OES_stencil1");
860 len += append_extension(&str, "GL_OES_stencil4");
861 }
862
863 if (ctx->Extensions.EXT_vertex_array)
864 len += append_extension(&str, "GL_OES_element_index_uint");
865 if (ctx->Extensions.ARB_vertex_buffer_object)
866 len += append_extension(&str, "GL_OES_mapbuffer");
867
868 if (ctx->Extensions.EXT_texture3D)
869 len += append_extension(&str, "GL_OES_texture_3D");
870 if (ctx->Extensions.ARB_texture_non_power_of_two)
871 len += append_extension(&str, "GL_OES_texture_npot");
872 if (ctx->Extensions.EXT_texture_filter_anisotropic)
873 len += append_extension(&str, "GL_EXT_texture_filter_anisotropic");
874
875 len += append_extension(&str, "GL_EXT_texture_type_2_10_10_10_REV");
876 if (ctx->Extensions.ARB_depth_texture)
877 len += append_extension(&str, "GL_OES_depth_texture");
878 if (ctx->Extensions.EXT_packed_depth_stencil)
879 len += append_extension(&str, "GL_OES_packed_depth_stencil");
880 if (ctx->Extensions.ARB_fragment_shader)
881 len += append_extension(&str, "GL_OES_standard_derivatives");
882
883 if (ctx->Extensions.EXT_texture_compression_s3tc)
884 len += append_extension(&str, "GL_EXT_texture_compression_dxt1");
885 if (ctx->Extensions.EXT_blend_minmax)
886 len += append_extension(&str, "GL_EXT_blend_minmax");
887 if (ctx->Extensions.EXT_multi_draw_arrays)
888 len += append_extension(&str, "GL_EXT_multi_draw_arrays");
889
890 #if FEATURE_OES_EGL_image
891 if (ctx->Extensions.OES_EGL_image)
892 len += append_extension(&str, "GL_OES_EGL_image");
893 #endif
894
895 return len;
896 }
897
898 static GLubyte *
899 compute_extensions_es2(GLcontext *ctx)
900 {
901 GLubyte *s;
902 unsigned int len;
903
904 len = make_extension_string_es2(ctx, NULL);
905 s = malloc(len + 1);
906 if (!s)
907 return NULL;
908 make_extension_string_es2(ctx, s);
909
910 return s;
911 }
912
913
914 GLubyte *
915 _mesa_make_extension_string(GLcontext *ctx)
916 {
917 switch (ctx->API) {
918 case API_OPENGL:
919 return compute_extensions(ctx);
920 case API_OPENGLES2:
921 return compute_extensions_es2(ctx);
922 case API_OPENGLES:
923 return compute_extensions_es1(ctx);
924 default:
925 assert(0);
926 return NULL;
927 }
928 }
929
930 /**
931 * Return number of enabled extensions.
932 */
933 GLuint
934 _mesa_get_extension_count(GLcontext *ctx)
935 {
936 GLuint i;
937
938 /* only count once */
939 if (!ctx->Extensions.Count) {
940 for (i = 0; i < Elements(default_extensions); i++) {
941 if (extension_enabled(ctx, i)) {
942 ctx->Extensions.Count++;
943 }
944 }
945 }
946
947 if (0)
948 _mesa_debug(ctx, "%u of %d extensions enabled\n", ctx->Extensions.Count,
949 Elements(default_extensions));
950
951 return ctx->Extensions.Count;
952 }
953
954
955 /**
956 * Return name of i-th enabled extension
957 */
958 const GLubyte *
959 _mesa_get_enabled_extension(GLcontext *ctx, GLuint index)
960 {
961 GLuint i;
962
963 for (i = 0; i < Elements(default_extensions); i++) {
964 if (extension_enabled(ctx, i)) {
965 if (index == 0)
966 return (const GLubyte *) default_extensions[i].name;
967 index--;
968 }
969 }
970
971 return NULL;
972 }