extensions.c revision 4a49301e
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 */ 43static const struct { 44 GLboolean enabled; 45 const char *name; 46 int flag_offset; 47} default_extensions[] = { 48 /* 49 * TODO: Sort by year, to ensure that old extensions are listed first, so 50 * that old applications that truncate the extension string get the basic 51 * extensions, roughly corresponding to what existed then. 52 * 53 * The best example is quake3demo, which often misses 54 * GL_EXT_compiled_vertex_array because it gets truncated. 55 */ 56 { ON, "GL_EXT_compiled_vertex_array", F(EXT_compiled_vertex_array) }, 57 { OFF, "GL_EXT_texture_compression_s3tc", F(EXT_texture_compression_s3tc) }, 58 { OFF, "GL_EXT_texture_env_add", F(EXT_texture_env_add) }, 59 60 { OFF, "GL_ARB_copy_buffer", F(ARB_copy_buffer) }, 61 { OFF, "GL_ARB_depth_texture", F(ARB_depth_texture) }, 62 { OFF, "GL_ARB_depth_clamp", F(ARB_depth_clamp) }, 63 { ON, "GL_ARB_draw_buffers", F(ARB_draw_buffers) }, 64 { OFF, "GL_ARB_draw_elements_base_vertex", F(ARB_draw_elements_base_vertex) }, 65 { OFF, "GL_ARB_fragment_program", F(ARB_fragment_program) }, 66 { OFF, "GL_ARB_fragment_program_shadow", F(ARB_fragment_program_shadow) }, 67 { OFF, "GL_ARB_fragment_shader", F(ARB_fragment_shader) }, 68 { OFF, "GL_ARB_framebuffer_object", F(ARB_framebuffer_object) }, 69 { OFF, "GL_ARB_half_float_pixel", F(ARB_half_float_pixel) }, 70 { OFF, "GL_ARB_imaging", F(ARB_imaging) }, 71 { OFF, "GL_ARB_map_buffer_range", F(ARB_map_buffer_range) }, 72 { ON, "GL_ARB_multisample", F(ARB_multisample) }, 73 { OFF, "GL_ARB_multitexture", F(ARB_multitexture) }, 74 { OFF, "GL_ARB_occlusion_query", F(ARB_occlusion_query) }, 75 { OFF, "GL_ARB_pixel_buffer_object", F(EXT_pixel_buffer_object) }, 76 { OFF, "GL_ARB_point_parameters", F(EXT_point_parameters) }, 77 { OFF, "GL_ARB_point_sprite", F(ARB_point_sprite) }, 78 { OFF, "GL_ARB_provoking_vertex", F(EXT_provoking_vertex) }, 79 { OFF, "GL_ARB_seamless_cube_map", F(ARB_seamless_cube_map) }, 80 { OFF, "GL_ARB_shader_objects", F(ARB_shader_objects) }, 81 { OFF, "GL_ARB_shading_language_100", F(ARB_shading_language_100) }, 82 { OFF, "GL_ARB_shading_language_120", F(ARB_shading_language_120) }, 83 { OFF, "GL_ARB_shadow", F(ARB_shadow) }, 84 { OFF, "GL_ARB_shadow_ambient", F(ARB_shadow_ambient) }, 85 { OFF, "GL_ARB_sync", F(ARB_sync) }, 86 { OFF, "GL_ARB_texture_border_clamp", F(ARB_texture_border_clamp) }, 87 { ON, "GL_ARB_texture_compression", F(ARB_texture_compression) }, 88 { OFF, "GL_ARB_texture_cube_map", F(ARB_texture_cube_map) }, 89 { OFF, "GL_ARB_texture_env_add", F(EXT_texture_env_add) }, 90 { OFF, "GL_ARB_texture_env_combine", F(ARB_texture_env_combine) }, 91 { OFF, "GL_ARB_texture_env_crossbar", F(ARB_texture_env_crossbar) }, 92 { OFF, "GL_ARB_texture_env_dot3", F(ARB_texture_env_dot3) }, 93 { OFF, "GL_MESAX_texture_float", F(ARB_texture_float) }, 94 { OFF, "GL_ARB_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)}, 95 { OFF, "GL_ARB_texture_non_power_of_two", F(ARB_texture_non_power_of_two)}, 96 { OFF, "GL_ARB_texture_rectangle", F(NV_texture_rectangle) }, 97 { ON, "GL_ARB_transpose_matrix", F(ARB_transpose_matrix) }, 98 { OFF, "GL_ARB_vertex_array_bgra", F(EXT_vertex_array_bgra) }, 99 { OFF, "GL_ARB_vertex_array_object", F(ARB_vertex_array_object) }, 100 { ON, "GL_ARB_vertex_buffer_object", F(ARB_vertex_buffer_object) }, 101 { OFF, "GL_ARB_vertex_program", F(ARB_vertex_program) }, 102 { OFF, "GL_ARB_vertex_shader", F(ARB_vertex_shader) }, 103 { ON, "GL_ARB_window_pos", F(ARB_window_pos) }, 104 { ON, "GL_EXT_abgr", F(EXT_abgr) }, 105 { ON, "GL_EXT_bgra", F(EXT_bgra) }, 106 { OFF, "GL_EXT_blend_color", F(EXT_blend_color) }, 107 { OFF, "GL_EXT_blend_equation_separate", F(EXT_blend_equation_separate) }, 108 { OFF, "GL_EXT_blend_func_separate", F(EXT_blend_func_separate) }, 109 { OFF, "GL_EXT_blend_logic_op", F(EXT_blend_logic_op) }, 110 { OFF, "GL_EXT_blend_minmax", F(EXT_blend_minmax) }, 111 { OFF, "GL_EXT_blend_subtract", F(EXT_blend_subtract) }, 112 { OFF, "GL_EXT_clip_volume_hint", F(EXT_clip_volume_hint) }, 113 { OFF, "GL_EXT_cull_vertex", F(EXT_cull_vertex) }, 114 { OFF, "GL_EXT_convolution", F(EXT_convolution) }, 115 { ON, "GL_EXT_copy_texture", F(EXT_copy_texture) }, 116 { OFF, "GL_EXT_depth_bounds_test", F(EXT_depth_bounds_test) }, 117 { ON, "GL_EXT_draw_range_elements", F(EXT_draw_range_elements) }, 118 { OFF, "GL_EXT_framebuffer_blit", F(EXT_framebuffer_blit) }, 119 { OFF, "GL_EXT_framebuffer_multisample", F(EXT_framebuffer_multisample) }, 120 { OFF, "GL_EXT_framebuffer_object", F(EXT_framebuffer_object) }, 121 { OFF, "GL_EXT_fog_coord", F(EXT_fog_coord) }, 122 { OFF, "GL_EXT_gpu_program_parameters", F(EXT_gpu_program_parameters) }, 123 { OFF, "GL_EXT_histogram", F(EXT_histogram) }, 124 { ON, "GL_EXT_multi_draw_arrays", F(EXT_multi_draw_arrays) }, 125 { OFF, "GL_EXT_packed_depth_stencil", F(EXT_packed_depth_stencil) }, 126 { ON, "GL_EXT_packed_pixels", F(EXT_packed_pixels) }, 127 { OFF, "GL_EXT_paletted_texture", F(EXT_paletted_texture) }, 128 { OFF, "GL_EXT_pixel_buffer_object", F(EXT_pixel_buffer_object) }, 129 { OFF, "GL_EXT_point_parameters", F(EXT_point_parameters) }, 130 { ON, "GL_EXT_polygon_offset", F(EXT_polygon_offset) }, 131 { OFF, "GL_EXT_provoking_vertex", F(EXT_provoking_vertex) }, 132 { ON, "GL_EXT_rescale_normal", F(EXT_rescale_normal) }, 133 { OFF, "GL_EXT_secondary_color", F(EXT_secondary_color) }, 134 { ON, "GL_EXT_separate_specular_color", F(EXT_separate_specular_color) }, 135 { OFF, "GL_EXT_shadow_funcs", F(EXT_shadow_funcs) }, 136 { OFF, "GL_EXT_shared_texture_palette", F(EXT_shared_texture_palette) }, 137 { OFF, "GL_EXT_stencil_two_side", F(EXT_stencil_two_side) }, 138 { OFF, "GL_EXT_stencil_wrap", F(EXT_stencil_wrap) }, 139 { ON, "GL_EXT_subtexture", F(EXT_subtexture) }, 140 { ON, "GL_EXT_texture", F(EXT_texture) }, 141 { ON, "GL_EXT_texture3D", F(EXT_texture3D) }, 142 { OFF, "GL_EXT_texture_cube_map", F(ARB_texture_cube_map) }, 143 { ON, "GL_EXT_texture_edge_clamp", F(SGIS_texture_edge_clamp) }, 144 { OFF, "GL_EXT_texture_env_combine", F(EXT_texture_env_combine) }, 145 { OFF, "GL_EXT_texture_env_dot3", F(EXT_texture_env_dot3) }, 146 { OFF, "GL_EXT_texture_filter_anisotropic", F(EXT_texture_filter_anisotropic) }, 147 { OFF, "GL_EXT_texture_lod_bias", F(EXT_texture_lod_bias) }, 148 { OFF, "GL_EXT_texture_mirror_clamp", F(EXT_texture_mirror_clamp) }, 149 { ON, "GL_EXT_texture_object", F(EXT_texture_object) }, 150 { OFF, "GL_EXT_texture_rectangle", F(NV_texture_rectangle) }, 151 { OFF, "GL_EXT_texture_sRGB", F(EXT_texture_sRGB) }, 152 { OFF, "GL_EXT_texture_swizzle", F(EXT_texture_swizzle) }, 153 { OFF, "GL_EXT_timer_query", F(EXT_timer_query) }, 154 { ON, "GL_EXT_vertex_array", F(EXT_vertex_array) }, 155 { OFF, "GL_EXT_vertex_array_bgra", F(EXT_vertex_array_bgra) }, 156 { OFF, "GL_EXT_vertex_array_set", F(EXT_vertex_array_set) }, 157 { OFF, "GL_3DFX_texture_compression_FXT1", F(TDFX_texture_compression_FXT1) }, 158 { OFF, "GL_APPLE_client_storage", F(APPLE_client_storage) }, 159 { ON, "GL_APPLE_packed_pixels", F(APPLE_packed_pixels) }, 160 { OFF, "GL_APPLE_vertex_array_object", F(APPLE_vertex_array_object) }, 161 { OFF, "GL_ATI_blend_equation_separate", F(EXT_blend_equation_separate) }, 162 { OFF, "GL_ATI_envmap_bumpmap", F(ATI_envmap_bumpmap) }, 163 { OFF, "GL_ATI_texture_env_combine3", F(ATI_texture_env_combine3)}, 164 { OFF, "GL_ATI_texture_mirror_once", F(ATI_texture_mirror_once)}, 165 { OFF, "GL_ATI_fragment_shader", F(ATI_fragment_shader)}, 166 { OFF, "GL_ATI_separate_stencil", F(ATI_separate_stencil)}, 167 { ON, "GL_IBM_multimode_draw_arrays", F(IBM_multimode_draw_arrays) }, 168 { ON, "GL_IBM_rasterpos_clip", F(IBM_rasterpos_clip) }, 169 { OFF, "GL_IBM_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)}, 170 { OFF, "GL_INGR_blend_func_separate", F(EXT_blend_func_separate) }, 171 { OFF, "GL_MESA_pack_invert", F(MESA_pack_invert) }, 172 { OFF, "GL_MESA_packed_depth_stencil", F(MESA_packed_depth_stencil) }, 173 { OFF, "GL_MESA_resize_buffers", F(MESA_resize_buffers) }, 174 { OFF, "GL_MESA_texture_array", F(MESA_texture_array) }, 175 { OFF, "GL_MESA_texture_signed_rgba", F(MESA_texture_signed_rgba) }, 176 { OFF, "GL_MESA_ycbcr_texture", F(MESA_ycbcr_texture) }, 177 { ON, "GL_MESA_window_pos", F(ARB_window_pos) }, 178 { OFF, "GL_NV_blend_square", F(NV_blend_square) }, 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}; 201 202 203 204/** 205 * Enable all extensions suitable for a software-only renderer. 206 * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc. 207 */ 208void 209_mesa_enable_sw_extensions(GLcontext *ctx) 210{ 211 ctx->Extensions.ARB_copy_buffer = GL_TRUE; 212 ctx->Extensions.ARB_depth_clamp = GL_TRUE; 213 ctx->Extensions.ARB_depth_texture = GL_TRUE; 214 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/ 215 ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE; 216#if FEATURE_ARB_fragment_program 217 ctx->Extensions.ARB_fragment_program = GL_TRUE; 218 ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE; 219#endif 220#if FEATURE_ARB_fragment_shader 221 ctx->Extensions.ARB_fragment_shader = GL_TRUE; 222#endif 223#if FEATURE_ARB_framebuffer_object 224 ctx->Extensions.ARB_framebuffer_object = GL_TRUE; 225#endif 226 ctx->Extensions.ARB_half_float_pixel = GL_TRUE; 227 ctx->Extensions.ARB_imaging = GL_TRUE; 228 ctx->Extensions.ARB_map_buffer_range = GL_TRUE; 229 ctx->Extensions.ARB_multitexture = GL_TRUE; 230#if FEATURE_queryobj 231 ctx->Extensions.ARB_occlusion_query = GL_TRUE; 232#endif 233 ctx->Extensions.ARB_point_sprite = GL_TRUE; 234#if FEATURE_ARB_shader_objects 235 ctx->Extensions.ARB_shader_objects = GL_TRUE; 236#endif 237#if FEATURE_ARB_shading_language_100 238 ctx->Extensions.ARB_shading_language_100 = GL_TRUE; 239#endif 240#if FEATURE_ARB_shading_language_120 241 ctx->Extensions.ARB_shading_language_120 = GL_TRUE; 242#endif 243 ctx->Extensions.ARB_shadow = GL_TRUE; 244 ctx->Extensions.ARB_shadow_ambient = GL_TRUE; 245 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; 246 ctx->Extensions.ARB_texture_cube_map = GL_TRUE; 247 ctx->Extensions.ARB_texture_env_combine = GL_TRUE; 248 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE; 249 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE; 250 /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/ 251 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE; 252 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE; 253 ctx->Extensions.ARB_vertex_array_object = GL_TRUE; 254#if FEATURE_ARB_vertex_program 255 ctx->Extensions.ARB_vertex_program = GL_TRUE; 256#endif 257#if FEATURE_ARB_vertex_shader 258 ctx->Extensions.ARB_vertex_shader = GL_TRUE; 259#endif 260#if FEATURE_ARB_vertex_buffer_object 261 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/ 262#endif 263#if FEATURE_ARB_sync 264 ctx->Extensions.ARB_sync = GL_TRUE; 265#endif 266 ctx->Extensions.APPLE_vertex_array_object = GL_TRUE; 267 ctx->Extensions.ATI_envmap_bumpmap = GL_TRUE; 268#if FEATURE_ATI_fragment_shader 269 ctx->Extensions.ATI_fragment_shader = GL_TRUE; 270#endif 271 ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE; 272 ctx->Extensions.ATI_texture_mirror_once = GL_TRUE; 273 ctx->Extensions.ATI_separate_stencil = GL_TRUE; 274 ctx->Extensions.EXT_blend_color = GL_TRUE; 275 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE; 276 ctx->Extensions.EXT_blend_func_separate = GL_TRUE; 277 ctx->Extensions.EXT_blend_logic_op = GL_TRUE; 278 ctx->Extensions.EXT_blend_minmax = GL_TRUE; 279 ctx->Extensions.EXT_blend_subtract = GL_TRUE; 280 ctx->Extensions.EXT_convolution = GL_TRUE; 281 ctx->Extensions.EXT_depth_bounds_test = GL_TRUE; 282 ctx->Extensions.EXT_fog_coord = GL_TRUE; 283#if FEATURE_EXT_framebuffer_object 284 ctx->Extensions.EXT_framebuffer_object = GL_TRUE; 285#endif 286#if FEATURE_EXT_framebuffer_blit 287 ctx->Extensions.EXT_framebuffer_blit = GL_TRUE; 288#endif 289#if FEATURE_ARB_framebuffer_object 290 ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE; 291#endif 292 ctx->Extensions.EXT_histogram = GL_TRUE; 293 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/ 294 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE; 295 ctx->Extensions.EXT_paletted_texture = GL_TRUE; 296#if FEATURE_EXT_pixel_buffer_object 297 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE; 298#endif 299 ctx->Extensions.EXT_point_parameters = GL_TRUE; 300 ctx->Extensions.EXT_provoking_vertex = GL_TRUE; 301 ctx->Extensions.EXT_shadow_funcs = GL_TRUE; 302 ctx->Extensions.EXT_secondary_color = GL_TRUE; 303 ctx->Extensions.EXT_shared_texture_palette = GL_TRUE; 304 ctx->Extensions.EXT_stencil_wrap = GL_TRUE; 305 ctx->Extensions.EXT_stencil_two_side = GL_TRUE; 306 ctx->Extensions.EXT_texture_env_add = GL_TRUE; 307 ctx->Extensions.EXT_texture_env_combine = GL_TRUE; 308 ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE; 309 ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE; 310 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE; 311#if FEATURE_EXT_texture_sRGB 312 ctx->Extensions.EXT_texture_sRGB = GL_TRUE; 313#endif 314 ctx->Extensions.EXT_texture_swizzle = GL_TRUE; 315 ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE; 316 /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/ 317 ctx->Extensions.MESA_pack_invert = GL_TRUE; 318 ctx->Extensions.MESA_resize_buffers = GL_TRUE; 319 ctx->Extensions.MESA_texture_array = GL_TRUE; 320 ctx->Extensions.MESA_ycbcr_texture = GL_TRUE; 321 ctx->Extensions.NV_blend_square = GL_TRUE; 322 /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/ 323 ctx->Extensions.NV_point_sprite = GL_TRUE; 324 ctx->Extensions.NV_texture_env_combine4 = GL_TRUE; 325 ctx->Extensions.NV_texture_rectangle = GL_TRUE; 326 /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/ 327#if FEATURE_NV_vertex_program 328 ctx->Extensions.NV_vertex_program = GL_TRUE; 329 ctx->Extensions.NV_vertex_program1_1 = GL_TRUE; 330#endif 331#if FEATURE_NV_fragment_program 332 ctx->Extensions.NV_fragment_program = GL_TRUE; 333#endif 334#if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program 335 ctx->Extensions.NV_fragment_program_option = GL_TRUE; 336#endif 337 ctx->Extensions.SGI_color_matrix = GL_TRUE; 338 ctx->Extensions.SGI_color_table = GL_TRUE; 339 ctx->Extensions.SGI_texture_color_table = GL_TRUE; 340 ctx->Extensions.SGIS_generate_mipmap = GL_TRUE; 341 ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE; 342#if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program 343 ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE; 344#endif 345#if FEATURE_texture_fxt1 346 _mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1"); 347#endif 348#if FEATURE_texture_s3tc 349 if (ctx->Mesa_DXTn) { 350 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc"); 351 _mesa_enable_extension(ctx, "GL_S3_s3tc"); 352 } 353#endif 354} 355 356 357/** 358 * Enable GL_ARB_imaging and all the EXT extensions that are subsets of it. 359 */ 360void 361_mesa_enable_imaging_extensions(GLcontext *ctx) 362{ 363 ctx->Extensions.ARB_imaging = GL_TRUE; 364 ctx->Extensions.EXT_blend_color = GL_TRUE; 365 ctx->Extensions.EXT_blend_logic_op = GL_TRUE; 366 ctx->Extensions.EXT_blend_minmax = GL_TRUE; 367 ctx->Extensions.EXT_blend_subtract = GL_TRUE; 368 ctx->Extensions.EXT_convolution = GL_TRUE; 369 ctx->Extensions.EXT_histogram = GL_TRUE; 370 ctx->Extensions.SGI_color_matrix = GL_TRUE; 371 ctx->Extensions.SGI_color_table = GL_TRUE; 372} 373 374 375 376/** 377 * Enable all OpenGL 1.3 features and extensions. 378 * A convenience function to be called by drivers. 379 */ 380void 381_mesa_enable_1_3_extensions(GLcontext *ctx) 382{ 383 /*ctx->Extensions.ARB_multisample = GL_TRUE;*/ 384 ctx->Extensions.ARB_multitexture = GL_TRUE; 385 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; 386 /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/ 387 ctx->Extensions.ARB_texture_cube_map = GL_TRUE; 388 ctx->Extensions.ARB_texture_env_combine = GL_TRUE; 389 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE; 390 ctx->Extensions.EXT_texture_env_add = GL_TRUE; 391 /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/ 392} 393 394 395 396/** 397 * Enable all OpenGL 1.4 features and extensions. 398 * A convenience function to be called by drivers. 399 */ 400void 401_mesa_enable_1_4_extensions(GLcontext *ctx) 402{ 403 ctx->Extensions.ARB_depth_texture = GL_TRUE; 404 ctx->Extensions.ARB_shadow = GL_TRUE; 405 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE; 406 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE; 407 ctx->Extensions.ARB_window_pos = GL_TRUE; 408 ctx->Extensions.EXT_blend_color = GL_TRUE; 409 ctx->Extensions.EXT_blend_func_separate = GL_TRUE; 410 ctx->Extensions.EXT_blend_minmax = GL_TRUE; 411 ctx->Extensions.EXT_blend_subtract = GL_TRUE; 412 ctx->Extensions.EXT_fog_coord = GL_TRUE; 413 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/ 414 ctx->Extensions.EXT_point_parameters = GL_TRUE; 415 ctx->Extensions.EXT_secondary_color = GL_TRUE; 416 ctx->Extensions.EXT_stencil_wrap = GL_TRUE; 417 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE; 418 ctx->Extensions.SGIS_generate_mipmap = GL_TRUE; 419} 420 421 422/** 423 * Enable all OpenGL 1.5 features and extensions. 424 * A convenience function to be called by drivers. 425 */ 426void 427_mesa_enable_1_5_extensions(GLcontext *ctx) 428{ 429 ctx->Extensions.ARB_occlusion_query = GL_TRUE; 430 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/ 431 ctx->Extensions.EXT_shadow_funcs = GL_TRUE; 432} 433 434 435/** 436 * Enable all OpenGL 2.0 features and extensions. 437 * A convenience function to be called by drivers. 438 */ 439void 440_mesa_enable_2_0_extensions(GLcontext *ctx) 441{ 442 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/ 443#if FEATURE_ARB_fragment_shader 444 ctx->Extensions.ARB_fragment_shader = GL_TRUE; 445#endif 446 ctx->Extensions.ARB_point_sprite = GL_TRUE; 447 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE; 448 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE; 449#if FEATURE_ARB_shader_objects 450 ctx->Extensions.ARB_shader_objects = GL_TRUE; 451#endif 452#if FEATURE_ARB_shading_language_100 453 ctx->Extensions.ARB_shading_language_100 = GL_TRUE; 454#endif 455 ctx->Extensions.EXT_stencil_two_side = GL_TRUE; 456#if FEATURE_ARB_vertex_shader 457 ctx->Extensions.ARB_vertex_shader = GL_TRUE; 458#endif 459} 460 461 462/** 463 * Enable all OpenGL 2.1 features and extensions. 464 * A convenience function to be called by drivers. 465 */ 466void 467_mesa_enable_2_1_extensions(GLcontext *ctx) 468{ 469#if FEATURE_EXT_pixel_buffer_object 470 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE; 471#endif 472#if FEATURE_EXT_texture_sRGB 473 ctx->Extensions.EXT_texture_sRGB = GL_TRUE; 474#endif 475#ifdef FEATURE_ARB_shading_language_120 476 ctx->Extensions.ARB_shading_language_120 = GL_TRUE; 477#endif 478} 479 480 481 482/** 483 * Either enable or disable the named extension. 484 * \return GL_TRUE for success, GL_FALSE if invalid extension name 485 */ 486static GLboolean 487set_extension( GLcontext *ctx, const char *name, GLboolean state ) 488{ 489 GLboolean *base = (GLboolean *) &ctx->Extensions; 490 GLuint i; 491 492 if (ctx->Extensions.String) { 493 /* The string was already queried - can't change it now! */ 494 _mesa_problem(ctx, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name); 495 return GL_FALSE; 496 } 497 498 for (i = 0 ; i < Elements(default_extensions) ; i++) { 499 if (_mesa_strcmp(default_extensions[i].name, name) == 0) { 500 if (default_extensions[i].flag_offset) { 501 GLboolean *enabled = base + default_extensions[i].flag_offset; 502 *enabled = state; 503 } 504 return GL_TRUE; 505 } 506 } 507 return GL_FALSE; 508} 509 510 511/** 512 * Enable the named extension. 513 * Typically called by drivers. 514 */ 515void 516_mesa_enable_extension( GLcontext *ctx, const char *name ) 517{ 518 if (!set_extension(ctx, name, GL_TRUE)) 519 _mesa_problem(ctx, "Trying to enable unknown extension: %s", name); 520} 521 522 523/** 524 * Disable the named extension. 525 * XXX is this really needed??? 526 */ 527void 528_mesa_disable_extension( GLcontext *ctx, const char *name ) 529{ 530 if (!set_extension(ctx, name, GL_FALSE)) 531 _mesa_problem(ctx, "Trying to disable unknown extension: %s", name); 532} 533 534 535/** 536 * Test if the named extension is enabled in this context. 537 */ 538GLboolean 539_mesa_extension_is_enabled( GLcontext *ctx, const char *name ) 540{ 541 const GLboolean *base = (const GLboolean *) &ctx->Extensions; 542 GLuint i; 543 544 for (i = 0 ; i < Elements(default_extensions) ; i++) { 545 if (_mesa_strcmp(default_extensions[i].name, name) == 0) { 546 if (!default_extensions[i].flag_offset) 547 return GL_TRUE; 548 return *(base + default_extensions[i].flag_offset); 549 } 550 } 551 return GL_FALSE; 552} 553 554 555/** 556 * Append string 'b' onto string 'a'. Free 'a' and return new string. 557 */ 558static char * 559append(const char *a, const char *b) 560{ 561 const GLuint aLen = a ? _mesa_strlen(a) : 0; 562 const GLuint bLen = b ? _mesa_strlen(b) : 0; 563 char *s = _mesa_calloc(aLen + bLen + 1); 564 if (s) { 565 if (a) 566 _mesa_memcpy(s, a, aLen); 567 if (b) 568 _mesa_memcpy(s + aLen, b, bLen); 569 s[aLen + bLen] = '\0'; 570 } 571 if (a) 572 _mesa_free((void *) a); 573 return s; 574} 575 576 577/** 578 * Check the MESA_EXTENSION_OVERRIDE env var. 579 * For extension names that are recognized, turn them on. For extension 580 * names that are recognized and prefixed with '-', turn them off. 581 * Return a string of the unknown/leftover names. 582 */ 583static const char * 584get_extension_override( GLcontext *ctx ) 585{ 586 const char *envExt = _mesa_getenv("MESA_EXTENSION_OVERRIDE"); 587 char *extraExt = NULL; 588 char ext[1000]; 589 GLuint extLen = 0; 590 GLuint i; 591 GLboolean disableExt = GL_FALSE; 592 593 if (!envExt) 594 return NULL; 595 596 for (i = 0; ; i++) { 597 if (envExt[i] == '\0' || envExt[i] == ' ') { 598 /* terminate/process 'ext' if extLen > 0 */ 599 if (extLen > 0) { 600 assert(extLen < sizeof(ext)); 601 /* enable extension named by 'ext' */ 602 ext[extLen] = 0; 603 if (!set_extension(ctx, ext, !disableExt)) { 604 /* unknown extension name, append it to extraExt */ 605 if (extraExt) { 606 extraExt = append(extraExt, " "); 607 } 608 extraExt = append(extraExt, ext); 609 } 610 extLen = 0; 611 disableExt = GL_FALSE; 612 } 613 if (envExt[i] == '\0') 614 break; 615 } 616 else if (envExt[i] == '-') { 617 disableExt = GL_TRUE; 618 } 619 else { 620 /* accumulate this non-space character */ 621 ext[extLen++] = envExt[i]; 622 } 623 } 624 625 return extraExt; 626} 627 628 629/** 630 * Run through the default_extensions array above and set the 631 * ctx->Extensions.ARB/EXT_* flags accordingly. 632 * To be called during context initialization. 633 */ 634void 635_mesa_init_extensions( GLcontext *ctx ) 636{ 637 GLboolean *base = (GLboolean *) &ctx->Extensions; 638 GLuint i; 639 640 for (i = 0 ; i < Elements(default_extensions) ; i++) { 641 if (default_extensions[i].enabled && 642 default_extensions[i].flag_offset) { 643 *(base + default_extensions[i].flag_offset) = GL_TRUE; 644 } 645 } 646} 647 648 649/** 650 * Construct the GL_EXTENSIONS string. Called the first time that 651 * glGetString(GL_EXTENSIONS) is called. 652 */ 653GLubyte * 654_mesa_make_extension_string( GLcontext *ctx ) 655{ 656 const GLboolean *base = (const GLboolean *) &ctx->Extensions; 657 const char *extraExt = get_extension_override(ctx); 658 GLuint extStrLen = 0; 659 char *s; 660 GLuint i; 661 662 /* first, compute length of the extension string */ 663 for (i = 0 ; i < Elements(default_extensions) ; i++) { 664 if (!default_extensions[i].flag_offset || 665 *(base + default_extensions[i].flag_offset)) { 666 extStrLen += (GLuint)_mesa_strlen(default_extensions[i].name) + 1; 667 } 668 } 669 670 if (extraExt) 671 extStrLen += _mesa_strlen(extraExt) + 1; /* +1 for space */ 672 673 /* allocate the extension string */ 674 s = (char *) _mesa_malloc(extStrLen); 675 if (!s) 676 return NULL; 677 678 /* second, build the extension string */ 679 extStrLen = 0; 680 for (i = 0 ; i < Elements(default_extensions) ; i++) { 681 if (!default_extensions[i].flag_offset || 682 *(base + default_extensions[i].flag_offset)) { 683 GLuint len = (GLuint)_mesa_strlen(default_extensions[i].name); 684 _mesa_memcpy(s + extStrLen, default_extensions[i].name, len); 685 extStrLen += len; 686 s[extStrLen] = ' '; 687 extStrLen++; 688 } 689 } 690 ASSERT(extStrLen > 0); 691 692 s[extStrLen - 1] = 0; /* -1 to overwrite trailing the ' ' */ 693 694 if (extraExt) { 695 s = append(s, " "); 696 s = append(s, extraExt); 697 } 698 699 return (GLubyte *) s; 700} 701