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9df0ae4598a456b1696917c67f2e573704ff8da7
[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_blend_func_extended", F(ARB_blend_func_extended) },
48 { ON, "GL_ARB_copy_buffer", F(ARB_copy_buffer) },
49 { OFF, "GL_ARB_depth_buffer_float", F(ARB_depth_buffer_float) },
50 { OFF, "GL_ARB_depth_clamp", F(ARB_depth_clamp) },
51 { OFF, "GL_ARB_depth_texture", F(ARB_depth_texture) },
52 { ON, "GL_ARB_draw_buffers", F(ARB_draw_buffers) },
53 { OFF, "GL_ARB_draw_elements_base_vertex", F(ARB_draw_elements_base_vertex) },
54 { OFF, "GL_ARB_draw_instanced", F(ARB_draw_instanced) },
55 { OFF, "GL_ARB_explicit_attrib_location", F(ARB_explicit_attrib_location) },
56 { OFF, "GL_ARB_fragment_coord_conventions", F(ARB_fragment_coord_conventions) },
57 { OFF, "GL_ARB_fragment_program", F(ARB_fragment_program) },
58 { OFF, "GL_ARB_fragment_program_shadow", F(ARB_fragment_program_shadow) },
59 { OFF, "GL_ARB_fragment_shader", F(ARB_fragment_shader) },
60 { OFF, "GL_ARB_framebuffer_object", F(ARB_framebuffer_object) },
61 /* TODO: reenable this when the new GLSL compiler actually supports them */
62 /* { OFF, "GL_ARB_geometry_shader4", F(ARB_geometry_shader4) }, */
63 { OFF, "GL_ARB_half_float_pixel", F(ARB_half_float_pixel) },
64 { OFF, "GL_ARB_half_float_vertex", F(ARB_half_float_vertex) },
65 { OFF, "GL_ARB_instanced_arrays", F(ARB_instanced_arrays) },
66 { OFF, "GL_ARB_map_buffer_range", F(ARB_map_buffer_range) },
67 { ON, "GL_ARB_multisample", F(ARB_multisample) },
68 { OFF, "GL_ARB_multitexture", F(ARB_multitexture) },
69 { OFF, "GL_ARB_occlusion_query", F(ARB_occlusion_query) },
70 { OFF, "GL_ARB_occlusion_query2", F(ARB_occlusion_query2) },
71 { OFF, "GL_ARB_pixel_buffer_object", F(EXT_pixel_buffer_object) },
72 { OFF, "GL_ARB_point_parameters", F(EXT_point_parameters) },
73 { OFF, "GL_ARB_point_sprite", F(ARB_point_sprite) },
74 { OFF, "GL_ARB_provoking_vertex", F(EXT_provoking_vertex) },
75 { OFF, "GL_ARB_sampler_objects", F(ARB_sampler_objects) },
76 { OFF, "GL_ARB_seamless_cube_map", F(ARB_seamless_cube_map) },
77 { OFF, "GL_ARB_shader_objects", F(ARB_shader_objects) },
78 { OFF, "GL_ARB_shading_language_100", F(ARB_shading_language_100) },
79 { OFF, "GL_ARB_shadow", F(ARB_shadow) },
80 { OFF, "GL_ARB_shadow_ambient", F(ARB_shadow_ambient) },
81 { OFF, "GL_ARB_sync", F(ARB_sync) },
82 { OFF, "GL_ARB_texture_border_clamp", F(ARB_texture_border_clamp) },
83 { OFF, "GL_ARB_texture_buffer_object", F(ARB_texture_buffer_object) },
84 { ON, "GL_ARB_texture_compression", F(ARB_texture_compression) },
85 { OFF, "GL_ARB_texture_compression_rgtc", F(ARB_texture_compression_rgtc) },
86 { OFF, "GL_ARB_texture_cube_map", F(ARB_texture_cube_map) },
87 { OFF, "GL_ARB_texture_env_add", F(EXT_texture_env_add) },
88 { OFF, "GL_ARB_texture_env_combine", F(ARB_texture_env_combine) },
89 { OFF, "GL_ARB_texture_env_crossbar", F(ARB_texture_env_crossbar) },
90 { OFF, "GL_ARB_texture_env_dot3", F(ARB_texture_env_dot3) },
91 { OFF, "GL_MESAX_texture_float", F(ARB_texture_float) },
92 { OFF, "GL_ARB_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
93 { OFF, "GL_ARB_texture_multisample", F(ARB_texture_multisample) },
94 { OFF, "GL_ARB_texture_non_power_of_two", F(ARB_texture_non_power_of_two)},
95 { OFF, "GL_ARB_texture_rectangle", F(NV_texture_rectangle) },
96 { OFF, "GL_ARB_texture_rg", F(ARB_texture_rg) },
97 { OFF, "GL_ARB_texture_rgb10_a2ui", F(ARB_texture_rgb10_a2ui) },
98 { OFF, "GL_ARB_texture_swizzle", F(EXT_texture_swizzle) },
99 { ON, "GL_ARB_transpose_matrix", F(ARB_transpose_matrix) },
100 { OFF, "GL_ARB_transform_feedback2", F(ARB_transform_feedback2) },
101 { OFF, "GL_ARB_uniform_buffer_object", F(ARB_uniform_buffer_object) },
102 { OFF, "GL_ARB_vertex_array_bgra", F(EXT_vertex_array_bgra) },
103 { OFF, "GL_ARB_vertex_array_object", F(ARB_vertex_array_object) },
104 { ON, "GL_ARB_vertex_buffer_object", F(ARB_vertex_buffer_object) },
105 { OFF, "GL_ARB_vertex_program", F(ARB_vertex_program) },
106 { OFF, "GL_ARB_vertex_shader", F(ARB_vertex_shader) },
107 { OFF, "GL_ARB_vertex_type_2_10_10_10_rev", F(ARB_vertex_type_2_10_10_10_rev) },
108 { ON, "GL_ARB_window_pos", F(ARB_window_pos) },
109 { ON, "GL_EXT_abgr", F(EXT_abgr) },
110 { ON, "GL_EXT_bgra", F(EXT_bgra) },
111 { OFF, "GL_EXT_blend_color", F(EXT_blend_color) },
112 { OFF, "GL_EXT_blend_equation_separate", F(EXT_blend_equation_separate) },
113 { OFF, "GL_EXT_blend_func_separate", F(EXT_blend_func_separate) },
114 { OFF, "GL_EXT_blend_logic_op", F(EXT_blend_logic_op) },
115 { OFF, "GL_EXT_blend_minmax", F(EXT_blend_minmax) },
116 { OFF, "GL_EXT_blend_subtract", F(EXT_blend_subtract) },
117 { OFF, "GL_EXT_clip_volume_hint", F(EXT_clip_volume_hint) },
118 { ON, "GL_EXT_compiled_vertex_array", F(EXT_compiled_vertex_array) },
119 { ON, "GL_EXT_copy_texture", F(EXT_copy_texture) },
120 { OFF, "GL_EXT_depth_bounds_test", F(EXT_depth_bounds_test) },
121 { OFF, "GL_EXT_draw_buffers2", F(EXT_draw_buffers2) },
122 { OFF, "GL_EXT_draw_instanced", F(ARB_draw_instanced) },
123 { ON, "GL_EXT_draw_range_elements", F(EXT_draw_range_elements) },
124 { OFF, "GL_EXT_framebuffer_blit", F(EXT_framebuffer_blit) },
125 { OFF, "GL_EXT_framebuffer_multisample", F(EXT_framebuffer_multisample) },
126 { OFF, "GL_EXT_framebuffer_object", F(EXT_framebuffer_object) },
127 { OFF, "GL_EXT_framebuffer_sRGB", F(EXT_framebuffer_sRGB) },
128 { OFF, "GL_EXT_fog_coord", F(EXT_fog_coord) },
129 { OFF, "GL_EXT_gpu_program_parameters", F(EXT_gpu_program_parameters) },
130 { ON, "GL_EXT_multi_draw_arrays", F(EXT_multi_draw_arrays) },
131 { OFF, "GL_EXT_packed_depth_stencil", F(EXT_packed_depth_stencil) },
132 { OFF, "GL_EXT_packed_float", F(EXT_packed_float) },
133 { ON, "GL_EXT_packed_pixels", F(EXT_packed_pixels) },
134 { OFF, "GL_EXT_paletted_texture", F(EXT_paletted_texture) },
135 { OFF, "GL_EXT_pixel_buffer_object", F(EXT_pixel_buffer_object) },
136 { OFF, "GL_EXT_point_parameters", F(EXT_point_parameters) },
137 { ON, "GL_EXT_polygon_offset", F(EXT_polygon_offset) },
138 { OFF, "GL_EXT_provoking_vertex", F(EXT_provoking_vertex) },
139 { ON, "GL_EXT_rescale_normal", F(EXT_rescale_normal) },
140 { OFF, "GL_EXT_secondary_color", F(EXT_secondary_color) },
141 { ON, "GL_EXT_separate_specular_color", F(EXT_separate_specular_color) },
142 { OFF, "GL_EXT_shadow_funcs", F(EXT_shadow_funcs) },
143 { OFF, "GL_EXT_shared_texture_palette", F(EXT_shared_texture_palette) },
144 { OFF, "GL_EXT_stencil_two_side", F(EXT_stencil_two_side) },
145 { OFF, "GL_EXT_stencil_wrap", F(EXT_stencil_wrap) },
146 { ON, "GL_EXT_subtexture", F(EXT_subtexture) },
147 { ON, "GL_EXT_texture", F(EXT_texture) },
148 { ON, "GL_EXT_texture3D", F(EXT_texture3D) },
149 { OFF, "GL_EXT_texture_array", F(EXT_texture_array) },
150 { OFF, "GL_EXT_texture_compression_s3tc", F(EXT_texture_compression_s3tc) },
151 { OFF, "GL_EXT_texture_compression_rgtc", F(ARB_texture_compression_rgtc) },
152 { OFF, "GL_EXT_texture_cube_map", F(ARB_texture_cube_map) },
153 { ON, "GL_EXT_texture_edge_clamp", F(SGIS_texture_edge_clamp) },
154 { OFF, "GL_EXT_texture_env_add", F(EXT_texture_env_add) },
155 { OFF, "GL_EXT_texture_env_combine", F(EXT_texture_env_combine) },
156 { OFF, "GL_EXT_texture_env_dot3", F(EXT_texture_env_dot3) },
157 { OFF, "GL_EXT_texture_filter_anisotropic", F(EXT_texture_filter_anisotropic) },
158 { OFF, "GL_EXT_texture_integer", F(EXT_texture_integer) },
159 { OFF, "GL_EXT_texture_lod_bias", F(EXT_texture_lod_bias) },
160 { OFF, "GL_EXT_texture_mirror_clamp", F(EXT_texture_mirror_clamp) },
161 { ON, "GL_EXT_texture_object", F(EXT_texture_object) },
162 { OFF, "GL_EXT_texture_rectangle", F(NV_texture_rectangle) },
163 { OFF, "GL_EXT_texture_shared_exponent", F(EXT_texture_shared_exponent) },
164 { OFF, "GL_EXT_texture_sRGB", F(EXT_texture_sRGB) },
165 { OFF, "GL_EXT_texture_swizzle", F(EXT_texture_swizzle) },
166 { OFF, "GL_EXT_timer_query", F(EXT_timer_query) },
167 { OFF, "GL_EXT_transform_feedback", F(EXT_transform_feedback) },
168 { ON, "GL_EXT_vertex_array", F(EXT_vertex_array) },
169 { OFF, "GL_EXT_vertex_array_bgra", F(EXT_vertex_array_bgra) },
170 { OFF, "GL_EXT_vertex_array_set", F(EXT_vertex_array_set) },
171 { OFF, "GL_3DFX_texture_compression_FXT1", F(TDFX_texture_compression_FXT1) },
172 { OFF, "GL_APPLE_client_storage", F(APPLE_client_storage) },
173 { ON, "GL_APPLE_packed_pixels", F(APPLE_packed_pixels) },
174 { OFF, "GL_APPLE_vertex_array_object", F(APPLE_vertex_array_object) },
175 { OFF, "GL_APPLE_object_purgeable", F(APPLE_object_purgeable) },
176 { OFF, "GL_ATI_blend_equation_separate", F(EXT_blend_equation_separate) },
177 { OFF, "GL_ATI_envmap_bumpmap", F(ATI_envmap_bumpmap) },
178 { OFF, "GL_ATI_texture_env_combine3", F(ATI_texture_env_combine3)},
179 { OFF, "GL_ATI_texture_mirror_once", F(ATI_texture_mirror_once)},
180 { OFF, "GL_ATI_fragment_shader", F(ATI_fragment_shader)},
181 { OFF, "GL_ATI_separate_stencil", F(ATI_separate_stencil)},
182 { ON, "GL_IBM_multimode_draw_arrays", F(IBM_multimode_draw_arrays) },
183 { ON, "GL_IBM_rasterpos_clip", F(IBM_rasterpos_clip) },
184 { OFF, "GL_IBM_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
185 { OFF, "GL_INGR_blend_func_separate", F(EXT_blend_func_separate) },
186 { OFF, "GL_MESA_pack_invert", F(MESA_pack_invert) },
187 { OFF, "GL_MESA_resize_buffers", F(MESA_resize_buffers) },
188 { OFF, "GL_MESA_texture_array", F(MESA_texture_array) },
189 { OFF, "GL_MESA_texture_signed_rgba", F(MESA_texture_signed_rgba) },
190 { OFF, "GL_MESA_ycbcr_texture", F(MESA_ycbcr_texture) },
191 { ON, "GL_MESA_window_pos", F(ARB_window_pos) },
192 { OFF, "GL_NV_blend_square", F(NV_blend_square) },
193 { OFF, "GL_NV_conditional_render", F(NV_conditional_render) },
194 { OFF, "GL_NV_depth_clamp", F(ARB_depth_clamp) },
195 { OFF, "GL_NV_fragment_program", F(NV_fragment_program) },
196 { OFF, "GL_NV_fragment_program_option", F(NV_fragment_program_option) },
197 { ON, "GL_NV_light_max_exponent", F(NV_light_max_exponent) },
198 { OFF, "GL_NV_packed_depth_stencil", F(EXT_packed_depth_stencil) },
199 { OFF, "GL_NV_point_sprite", F(NV_point_sprite) },
200 { OFF, "GL_NV_primitive_restart", F(NV_primitive_restart) },
201 { ON, "GL_NV_texgen_reflection", F(NV_texgen_reflection) },
202 { OFF, "GL_NV_texture_env_combine4", F(NV_texture_env_combine4) },
203 { OFF, "GL_NV_texture_rectangle", F(NV_texture_rectangle) },
204 { OFF, "GL_NV_vertex_program", F(NV_vertex_program) },
205 { OFF, "GL_NV_vertex_program1_1", F(NV_vertex_program1_1) },
206 { ON, "GL_OES_read_format", F(OES_read_format) },
207 { OFF, "GL_SGI_texture_color_table", F(SGI_texture_color_table) },
208 { ON, "GL_SGIS_generate_mipmap", F(SGIS_generate_mipmap) },
209 { OFF, "GL_SGIS_texture_border_clamp", F(ARB_texture_border_clamp) },
210 { ON, "GL_SGIS_texture_edge_clamp", F(SGIS_texture_edge_clamp) },
211 { ON, "GL_SGIS_texture_lod", F(SGIS_texture_lod) },
212 { ON, "GL_SUN_multi_draw_arrays", F(EXT_multi_draw_arrays) },
213 { OFF, "GL_S3_s3tc", F(S3_s3tc) },
214 { OFF, "GL_EXT_texture_format_BGRA8888", F(EXT_texture_format_BGRA8888) },
215 #if FEATURE_OES_EGL_image
216 { OFF, "GL_OES_EGL_image", F(OES_EGL_image) },
217 #endif
218 #if FEATURE_OES_draw_texture
219 { OFF, "GL_OES_draw_texture", F(OES_draw_texture) },
220 #endif /* FEATURE_OES_draw_texture */
221 };
222
223
224
225 /**
226 * Enable all extensions suitable for a software-only renderer.
227 * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc.
228 */
229 void
230 _mesa_enable_sw_extensions(GLcontext *ctx)
231 {
232 /*ctx->Extensions.ARB_copy_buffer = GL_TRUE;*/
233 ctx->Extensions.ARB_depth_clamp = GL_TRUE;
234 ctx->Extensions.ARB_depth_texture = GL_TRUE;
235 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
236 ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
237 ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE;
238 ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
239 #if FEATURE_ARB_fragment_program
240 ctx->Extensions.ARB_fragment_program = GL_TRUE;
241 ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
242 #endif
243 #if FEATURE_ARB_fragment_shader
244 ctx->Extensions.ARB_fragment_shader = GL_TRUE;
245 #endif
246 #if FEATURE_ARB_framebuffer_object
247 ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
248 #endif
249 #if FEATURE_ARB_geometry_shader4
250 ctx->Extensions.ARB_geometry_shader4 = GL_TRUE;
251 #endif
252 ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
253 ctx->Extensions.ARB_half_float_vertex = GL_TRUE;
254 ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
255 ctx->Extensions.ARB_multitexture = GL_TRUE;
256 #if FEATURE_queryobj
257 ctx->Extensions.ARB_occlusion_query = GL_TRUE;
258 #endif
259 ctx->Extensions.ARB_point_sprite = GL_TRUE;
260 #if FEATURE_ARB_shader_objects
261 ctx->Extensions.ARB_shader_objects = GL_TRUE;
262 #endif
263 #if FEATURE_ARB_shading_language_100
264 ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
265 #endif
266 ctx->Extensions.ARB_shadow = GL_TRUE;
267 ctx->Extensions.ARB_shadow_ambient = GL_TRUE;
268 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE;
269 ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
270 ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
271 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
272 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
273 /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/
274 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
275 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
276 ctx->Extensions.ARB_texture_rg = GL_TRUE;
277 ctx->Extensions.ARB_vertex_array_object = GL_TRUE;
278 #if FEATURE_ARB_vertex_program
279 ctx->Extensions.ARB_vertex_program = GL_TRUE;
280 #endif
281 #if FEATURE_ARB_vertex_shader
282 ctx->Extensions.ARB_vertex_shader = GL_TRUE;
283 #endif
284 #if FEATURE_ARB_vertex_buffer_object
285 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
286 #endif
287 #if FEATURE_ARB_sync
288 ctx->Extensions.ARB_sync = GL_TRUE;
289 #endif
290 ctx->Extensions.APPLE_vertex_array_object = GL_TRUE;
291 #if FEATURE_APPLE_object_purgeable
292 ctx->Extensions.APPLE_object_purgeable = GL_TRUE;
293 #endif
294 ctx->Extensions.ATI_envmap_bumpmap = GL_TRUE;
295 #if FEATURE_ATI_fragment_shader
296 ctx->Extensions.ATI_fragment_shader = GL_TRUE;
297 #endif
298 ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;
299 ctx->Extensions.ATI_texture_mirror_once = GL_TRUE;
300 ctx->Extensions.ATI_separate_stencil = GL_TRUE;
301 ctx->Extensions.EXT_blend_color = GL_TRUE;
302 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
303 ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
304 ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
305 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
306 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
307 ctx->Extensions.EXT_depth_bounds_test = GL_TRUE;
308 ctx->Extensions.EXT_draw_buffers2 = GL_TRUE;
309 ctx->Extensions.EXT_fog_coord = GL_TRUE;
310 #if FEATURE_EXT_framebuffer_object
311 ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
312 #endif
313 #if FEATURE_EXT_framebuffer_blit
314 ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
315 #endif
316 #if FEATURE_ARB_framebuffer_object
317 ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
318 #endif
319 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
320 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
321 ctx->Extensions.EXT_paletted_texture = GL_TRUE;
322 #if FEATURE_EXT_pixel_buffer_object
323 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
324 #endif
325 ctx->Extensions.EXT_point_parameters = GL_TRUE;
326 ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
327 ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
328 ctx->Extensions.EXT_secondary_color = GL_TRUE;
329 ctx->Extensions.EXT_shared_texture_palette = GL_TRUE;
330 ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
331 ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
332 ctx->Extensions.EXT_texture_array = GL_TRUE;
333 ctx->Extensions.EXT_texture_env_add = GL_TRUE;
334 ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
335 ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
336 ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
337 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
338 #if FEATURE_EXT_texture_sRGB
339 ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
340 #endif
341 ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
342 #if FEATURE_EXT_transform_feedback
343 /*ctx->Extensions.EXT_transform_feedback = GL_TRUE;*/
344 #endif
345 ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
346 /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/
347 ctx->Extensions.MESA_pack_invert = GL_TRUE;
348 ctx->Extensions.MESA_resize_buffers = GL_TRUE;
349 ctx->Extensions.MESA_texture_array = GL_TRUE;
350 ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
351 ctx->Extensions.NV_blend_square = GL_TRUE;
352 ctx->Extensions.NV_conditional_render = GL_TRUE;
353 /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/
354 ctx->Extensions.NV_point_sprite = GL_TRUE;
355 ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
356 ctx->Extensions.NV_texture_rectangle = GL_TRUE;
357 /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/
358 #if FEATURE_NV_vertex_program
359 ctx->Extensions.NV_vertex_program = GL_TRUE;
360 ctx->Extensions.NV_vertex_program1_1 = GL_TRUE;
361 #endif
362 #if FEATURE_NV_fragment_program
363 ctx->Extensions.NV_fragment_program = GL_TRUE;
364 #endif
365 #if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program
366 ctx->Extensions.NV_fragment_program_option = GL_TRUE;
367 #endif
368 ctx->Extensions.SGI_texture_color_table = GL_TRUE;
369 /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/
370 ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE;
371 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
372 ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
373 #endif
374 #if FEATURE_texture_fxt1
375 _mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1");
376 #endif
377 #if FEATURE_texture_s3tc
378 if (ctx->Mesa_DXTn) {
379 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
380 _mesa_enable_extension(ctx, "GL_S3_s3tc");
381 }
382 #endif
383 }
384
385
386 /**
387 * Enable common EXT extensions in the ARB_imaging subset.
388 */
389 void
390 _mesa_enable_imaging_extensions(GLcontext *ctx)
391 {
392 ctx->Extensions.EXT_blend_color = GL_TRUE;
393 ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
394 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
395 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
396 }
397
398
399
400 /**
401 * Enable all OpenGL 1.3 features and extensions.
402 * A convenience function to be called by drivers.
403 */
404 void
405 _mesa_enable_1_3_extensions(GLcontext *ctx)
406 {
407 /*ctx->Extensions.ARB_multisample = GL_TRUE;*/
408 ctx->Extensions.ARB_multitexture = GL_TRUE;
409 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE;
410 /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/
411 ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
412 ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
413 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
414 ctx->Extensions.EXT_texture_env_add = GL_TRUE;
415 /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/
416 }
417
418
419
420 /**
421 * Enable all OpenGL 1.4 features and extensions.
422 * A convenience function to be called by drivers.
423 */
424 void
425 _mesa_enable_1_4_extensions(GLcontext *ctx)
426 {
427 ctx->Extensions.ARB_depth_texture = GL_TRUE;
428 ctx->Extensions.ARB_shadow = GL_TRUE;
429 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
430 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
431 ctx->Extensions.ARB_window_pos = GL_TRUE;
432 ctx->Extensions.EXT_blend_color = GL_TRUE;
433 ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
434 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
435 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
436 ctx->Extensions.EXT_fog_coord = GL_TRUE;
437 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
438 ctx->Extensions.EXT_point_parameters = GL_TRUE;
439 ctx->Extensions.EXT_secondary_color = GL_TRUE;
440 ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
441 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
442 /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/
443 }
444
445
446 /**
447 * Enable all OpenGL 1.5 features and extensions.
448 * A convenience function to be called by drivers.
449 */
450 void
451 _mesa_enable_1_5_extensions(GLcontext *ctx)
452 {
453 ctx->Extensions.ARB_occlusion_query = GL_TRUE;
454 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
455 ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
456 }
457
458
459 /**
460 * Enable all OpenGL 2.0 features and extensions.
461 * A convenience function to be called by drivers.
462 */
463 void
464 _mesa_enable_2_0_extensions(GLcontext *ctx)
465 {
466 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
467 #if FEATURE_ARB_fragment_shader
468 ctx->Extensions.ARB_fragment_shader = GL_TRUE;
469 #endif
470 ctx->Extensions.ARB_point_sprite = GL_TRUE;
471 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
472 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
473 #if FEATURE_ARB_shader_objects
474 ctx->Extensions.ARB_shader_objects = GL_TRUE;
475 #endif
476 #if FEATURE_ARB_shading_language_100
477 ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
478 #endif
479 ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
480 #if FEATURE_ARB_vertex_shader
481 ctx->Extensions.ARB_vertex_shader = GL_TRUE;
482 #endif
483 }
484
485
486 /**
487 * Enable all OpenGL 2.1 features and extensions.
488 * A convenience function to be called by drivers.
489 */
490 void
491 _mesa_enable_2_1_extensions(GLcontext *ctx)
492 {
493 #if FEATURE_EXT_pixel_buffer_object
494 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
495 #endif
496 #if FEATURE_EXT_texture_sRGB
497 ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
498 #endif
499 }
500
501
502 /**
503 * Either enable or disable the named extension.
504 * \return GL_TRUE for success, GL_FALSE if invalid extension name
505 */
506 static GLboolean
507 set_extension( GLcontext *ctx, const char *name, GLboolean state )
508 {
509 GLboolean *base = (GLboolean *) &ctx->Extensions;
510 GLuint i;
511
512 if (ctx->Extensions.String) {
513 /* The string was already queried - can't change it now! */
514 _mesa_problem(ctx, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name);
515 return GL_FALSE;
516 }
517
518 for (i = 0 ; i < Elements(default_extensions) ; i++) {
519 if (strcmp(default_extensions[i].name, name) == 0) {
520 if (default_extensions[i].flag_offset) {
521 GLboolean *enabled = base + default_extensions[i].flag_offset;
522 *enabled = state;
523 }
524 return GL_TRUE;
525 }
526 }
527 return GL_FALSE;
528 }
529
530
531 /**
532 * Enable the named extension.
533 * Typically called by drivers.
534 */
535 void
536 _mesa_enable_extension( GLcontext *ctx, const char *name )
537 {
538 if (!set_extension(ctx, name, GL_TRUE))
539 _mesa_problem(ctx, "Trying to enable unknown extension: %s", name);
540 }
541
542
543 /**
544 * Disable the named extension.
545 * XXX is this really needed???
546 */
547 void
548 _mesa_disable_extension( GLcontext *ctx, const char *name )
549 {
550 if (!set_extension(ctx, name, GL_FALSE))
551 _mesa_problem(ctx, "Trying to disable unknown extension: %s", name);
552 }
553
554
555 /**
556 * Check if the i-th extension is enabled.
557 */
558 static GLboolean
559 extension_enabled(GLcontext *ctx, GLuint index)
560 {
561 const GLboolean *base = (const GLboolean *) &ctx->Extensions;
562 if (!default_extensions[index].flag_offset ||
563 *(base + default_extensions[index].flag_offset)) {
564 return GL_TRUE;
565 }
566 else {
567 return GL_FALSE;
568 }
569 }
570
571
572 /**
573 * Test if the named extension is enabled in this context.
574 */
575 GLboolean
576 _mesa_extension_is_enabled( GLcontext *ctx, const char *name )
577 {
578 GLuint i;
579
580 for (i = 0 ; i < Elements(default_extensions) ; i++) {
581 if (strcmp(default_extensions[i].name, name) == 0) {
582 return extension_enabled(ctx, i);
583 }
584 }
585 return GL_FALSE;
586 }
587
588
589 /**
590 * Append string 'b' onto string 'a'. Free 'a' and return new string.
591 */
592 static char *
593 append(const char *a, const char *b)
594 {
595 const GLuint aLen = a ? strlen(a) : 0;
596 const GLuint bLen = b ? strlen(b) : 0;
597 char *s = calloc(1, aLen + bLen + 1);
598 if (s) {
599 if (a)
600 memcpy(s, a, aLen);
601 if (b)
602 memcpy(s + aLen, b, bLen);
603 s[aLen + bLen] = '\0';
604 }
605 if (a)
606 free((void *) a);
607 return s;
608 }
609
610
611 /**
612 * Check the MESA_EXTENSION_OVERRIDE env var.
613 * For extension names that are recognized, turn them on. For extension
614 * names that are recognized and prefixed with '-', turn them off.
615 * Return a string of the unknown/leftover names.
616 */
617 static const char *
618 get_extension_override( GLcontext *ctx )
619 {
620 const char *envExt = _mesa_getenv("MESA_EXTENSION_OVERRIDE");
621 char *extraExt = NULL;
622 char ext[1000];
623 GLuint extLen = 0;
624 GLuint i;
625 GLboolean disableExt = GL_FALSE;
626
627 if (!envExt)
628 return NULL;
629
630 for (i = 0; ; i++) {
631 if (envExt[i] == '\0' || envExt[i] == ' ') {
632 /* terminate/process 'ext' if extLen > 0 */
633 if (extLen > 0) {
634 assert(extLen < sizeof(ext));
635 /* enable extension named by 'ext' */
636 ext[extLen] = 0;
637 if (!set_extension(ctx, ext, !disableExt)) {
638 /* unknown extension name, append it to extraExt */
639 if (extraExt) {
640 extraExt = append(extraExt, " ");
641 }
642 extraExt = append(extraExt, ext);
643 }
644 extLen = 0;
645 disableExt = GL_FALSE;
646 }
647 if (envExt[i] == '\0')
648 break;
649 }
650 else if (envExt[i] == '-') {
651 disableExt = GL_TRUE;
652 }
653 else {
654 /* accumulate this non-space character */
655 ext[extLen++] = envExt[i];
656 }
657 }
658
659 return extraExt;
660 }
661
662
663 /**
664 * Run through the default_extensions array above and set the
665 * ctx->Extensions.ARB/EXT_* flags accordingly.
666 * To be called during context initialization.
667 */
668 void
669 _mesa_init_extensions( GLcontext *ctx )
670 {
671 GLboolean *base = (GLboolean *) &ctx->Extensions;
672 GLuint i;
673
674 for (i = 0 ; i < Elements(default_extensions) ; i++) {
675 if (default_extensions[i].enabled &&
676 default_extensions[i].flag_offset) {
677 *(base + default_extensions[i].flag_offset) = GL_TRUE;
678 }
679 }
680 }
681
682
683 /**
684 * Construct the GL_EXTENSIONS string. Called the first time that
685 * glGetString(GL_EXTENSIONS) is called.
686 */
687 static GLubyte *
688 compute_extensions( GLcontext *ctx )
689 {
690 const char *extraExt = get_extension_override(ctx);
691 GLuint extStrLen = 0;
692 char *s;
693 GLuint i;
694
695 /* first, compute length of the extension string */
696 for (i = 0 ; i < Elements(default_extensions) ; i++) {
697 if (extension_enabled(ctx, i)) {
698 extStrLen += (GLuint) strlen(default_extensions[i].name) + 1;
699 }
700 }
701
702 if (extraExt)
703 extStrLen += strlen(extraExt) + 1; /* +1 for space */
704
705 /* allocate the extension string */
706 s = (char *) malloc(extStrLen);
707 if (!s)
708 return NULL;
709
710 /* second, build the extension string */
711 extStrLen = 0;
712 for (i = 0 ; i < Elements(default_extensions) ; i++) {
713 if (extension_enabled(ctx, i)) {
714 GLuint len = (GLuint) strlen(default_extensions[i].name);
715 memcpy(s + extStrLen, default_extensions[i].name, len);
716 extStrLen += len;
717 s[extStrLen] = ' ';
718 extStrLen++;
719 }
720 }
721 ASSERT(extStrLen > 0);
722
723 s[extStrLen - 1] = 0; /* -1 to overwrite trailing the ' ' */
724
725 if (extraExt) {
726 s = append(s, " ");
727 s = append(s, extraExt);
728 }
729
730 return (GLubyte *) s;
731 }
732
733 static size_t
734 append_extension(GLubyte **str, const char *ext)
735 {
736 GLubyte *s = *str;
737 size_t len = strlen(ext);
738
739 if (s) {
740 memcpy(s, ext, len);
741 s[len++] = ' ';
742 s[len] = '\0';
743
744 *str += len;
745 }
746 else {
747 len++;
748 }
749
750 return len;
751 }
752
753
754 static size_t
755 make_extension_string_es1(const GLcontext *ctx, GLubyte *str)
756 {
757 size_t len = 0;
758
759 /* Core additions */
760 len += append_extension(&str, "GL_OES_byte_coordinates");
761 len += append_extension(&str, "GL_OES_fixed_point");
762 len += append_extension(&str, "GL_OES_single_precision");
763 len += append_extension(&str, "GL_OES_matrix_get");
764
765 /* 1.1 required extensions */
766 len += append_extension(&str, "GL_OES_read_format");
767 len += append_extension(&str, "GL_OES_compressed_paletted_texture");
768 len += append_extension(&str, "GL_OES_point_size_array");
769 len += append_extension(&str, "GL_OES_point_sprite");
770
771 /* 1.1 deprecated extensions */
772 len += append_extension(&str, "GL_OES_query_matrix");
773
774 #if FEATURE_OES_draw_texture
775 if (ctx->Extensions.OES_draw_texture)
776 len += append_extension(&str, "GL_OES_draw_texture");
777 #endif
778
779 if (ctx->Extensions.EXT_blend_equation_separate)
780 len += append_extension(&str, "GL_OES_blend_equation_separate");
781 if (ctx->Extensions.EXT_blend_func_separate)
782 len += append_extension(&str, "GL_OES_blend_func_separate");
783 if (ctx->Extensions.EXT_blend_subtract)
784 len += append_extension(&str, "GL_OES_blend_subtract");
785
786 if (ctx->Extensions.EXT_stencil_wrap)
787 len += append_extension(&str, "GL_OES_stencil_wrap");
788
789 if (ctx->Extensions.ARB_texture_cube_map)
790 len += append_extension(&str, "GL_OES_texture_cube_map");
791 if (ctx->Extensions.ARB_texture_env_crossbar)
792 len += append_extension(&str, "GL_OES_texture_env_crossbar");
793 if (ctx->Extensions.ARB_texture_mirrored_repeat)
794 len += append_extension(&str, "GL_OES_texture_mirrored_repeat");
795
796 if (ctx->Extensions.ARB_framebuffer_object) {
797 len += append_extension(&str, "GL_OES_framebuffer_object");
798 len += append_extension(&str, "GL_OES_depth24");
799 len += append_extension(&str, "GL_OES_depth32");
800 len += append_extension(&str, "GL_OES_fbo_render_mipmap");
801 len += append_extension(&str, "GL_OES_rgb8_rgba8");
802 len += append_extension(&str, "GL_OES_stencil1");
803 len += append_extension(&str, "GL_OES_stencil4");
804 len += append_extension(&str, "GL_OES_stencil8");
805 }
806
807 if (ctx->Extensions.EXT_vertex_array)
808 len += append_extension(&str, "GL_OES_element_index_uint");
809 if (ctx->Extensions.ARB_vertex_buffer_object)
810 len += append_extension(&str, "GL_OES_mapbuffer");
811 if (ctx->Extensions.EXT_texture_filter_anisotropic)
812 len += append_extension(&str, "GL_EXT_texture_filter_anisotropic");
813
814 /* some applications check this for NPOT support */
815 if (ctx->Extensions.ARB_texture_non_power_of_two)
816 len += append_extension(&str, "GL_ARB_texture_non_power_of_two");
817
818 if (ctx->Extensions.EXT_texture_compression_s3tc)
819 len += append_extension(&str, "GL_EXT_texture_compression_dxt1");
820 if (ctx->Extensions.EXT_texture_lod_bias)
821 len += append_extension(&str, "GL_EXT_texture_lod_bias");
822 if (ctx->Extensions.EXT_blend_minmax)
823 len += append_extension(&str, "GL_EXT_blend_minmax");
824 if (ctx->Extensions.EXT_multi_draw_arrays)
825 len += append_extension(&str, "GL_EXT_multi_draw_arrays");
826
827 #if FEATURE_OES_EGL_image
828 if (ctx->Extensions.OES_EGL_image)
829 len += append_extension(&str, "GL_OES_EGL_image");
830 #endif
831
832 return len;
833 }
834
835
836 static GLubyte *
837 compute_extensions_es1(const GLcontext *ctx)
838 {
839 GLubyte *s;
840 unsigned int len;
841
842 len = make_extension_string_es1(ctx, NULL);
843 s = malloc(len + 1);
844 if (!s)
845 return NULL;
846 make_extension_string_es1(ctx, s);
847
848 return s;
849 }
850
851 static size_t
852 make_extension_string_es2(const GLcontext *ctx, GLubyte *str)
853 {
854 size_t len = 0;
855
856 len += append_extension(&str, "GL_OES_compressed_paletted_texture");
857
858 if (ctx->Extensions.ARB_framebuffer_object) {
859 len += append_extension(&str, "GL_OES_depth24");
860 len += append_extension(&str, "GL_OES_depth32");
861 len += append_extension(&str, "GL_OES_fbo_render_mipmap");
862 len += append_extension(&str, "GL_OES_rgb8_rgba8");
863 len += append_extension(&str, "GL_OES_stencil1");
864 len += append_extension(&str, "GL_OES_stencil4");
865 }
866
867 if (ctx->Extensions.EXT_vertex_array)
868 len += append_extension(&str, "GL_OES_element_index_uint");
869 if (ctx->Extensions.ARB_vertex_buffer_object)
870 len += append_extension(&str, "GL_OES_mapbuffer");
871
872 if (ctx->Extensions.EXT_texture3D)
873 len += append_extension(&str, "GL_OES_texture_3D");
874 if (ctx->Extensions.ARB_texture_non_power_of_two)
875 len += append_extension(&str, "GL_OES_texture_npot");
876 if (ctx->Extensions.EXT_texture_filter_anisotropic)
877 len += append_extension(&str, "GL_EXT_texture_filter_anisotropic");
878
879 len += append_extension(&str, "GL_EXT_texture_type_2_10_10_10_REV");
880 if (ctx->Extensions.ARB_depth_texture)
881 len += append_extension(&str, "GL_OES_depth_texture");
882 if (ctx->Extensions.EXT_packed_depth_stencil)
883 len += append_extension(&str, "GL_OES_packed_depth_stencil");
884 if (ctx->Extensions.ARB_fragment_shader)
885 len += append_extension(&str, "GL_OES_standard_derivatives");
886
887 if (ctx->Extensions.EXT_texture_compression_s3tc)
888 len += append_extension(&str, "GL_EXT_texture_compression_dxt1");
889 if (ctx->Extensions.EXT_blend_minmax)
890 len += append_extension(&str, "GL_EXT_blend_minmax");
891 if (ctx->Extensions.EXT_multi_draw_arrays)
892 len += append_extension(&str, "GL_EXT_multi_draw_arrays");
893
894 #if FEATURE_OES_EGL_image
895 if (ctx->Extensions.OES_EGL_image)
896 len += append_extension(&str, "GL_OES_EGL_image");
897 #endif
898
899 if (ctx->Extensions.EXT_texture_format_BGRA8888)
900 len += append_extension(&str, "GL_EXT_texture_format_BGRA8888");
901
902 return len;
903 }
904
905 static GLubyte *
906 compute_extensions_es2(GLcontext *ctx)
907 {
908 GLubyte *s;
909 unsigned int len;
910
911 len = make_extension_string_es2(ctx, NULL);
912 s = malloc(len + 1);
913 if (!s)
914 return NULL;
915 make_extension_string_es2(ctx, s);
916
917 return s;
918 }
919
920
921 GLubyte *
922 _mesa_make_extension_string(GLcontext *ctx)
923 {
924 switch (ctx->API) {
925 case API_OPENGL:
926 return compute_extensions(ctx);
927 case API_OPENGLES2:
928 return compute_extensions_es2(ctx);
929 case API_OPENGLES:
930 return compute_extensions_es1(ctx);
931 default:
932 assert(0);
933 return NULL;
934 }
935 }
936
937 /**
938 * Return number of enabled extensions.
939 */
940 GLuint
941 _mesa_get_extension_count(GLcontext *ctx)
942 {
943 GLuint i;
944
945 /* only count once */
946 if (!ctx->Extensions.Count) {
947 for (i = 0; i < Elements(default_extensions); i++) {
948 if (extension_enabled(ctx, i)) {
949 ctx->Extensions.Count++;
950 }
951 }
952 }
953
954 if (0)
955 _mesa_debug(ctx, "%u of %d extensions enabled\n", ctx->Extensions.Count,
956 (int) Elements(default_extensions));
957
958 return ctx->Extensions.Count;
959 }
960
961
962 /**
963 * Return name of i-th enabled extension
964 */
965 const GLubyte *
966 _mesa_get_enabled_extension(GLcontext *ctx, GLuint index)
967 {
968 GLuint i;
969
970 for (i = 0; i < Elements(default_extensions); i++) {
971 if (extension_enabled(ctx, i)) {
972 if (index == 0)
973 return (const GLubyte *) default_extensions[i].name;
974 index--;
975 }
976 }
977
978 return NULL;
979 }