extensions.c revision cdc920a0
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 { OFF, "GL_ARB_copy_buffer", F(ARB_copy_buffer) }, 49 { OFF, "GL_ARB_depth_texture", F(ARB_depth_texture) }, 50 { OFF, "GL_ARB_depth_clamp", F(ARB_depth_clamp) }, 51 { ON, "GL_ARB_draw_buffers", F(ARB_draw_buffers) }, 52 { OFF, "GL_ARB_draw_elements_base_vertex", F(ARB_draw_elements_base_vertex) }, 53 { OFF, "GL_ARB_fragment_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_vertex_array_bgra", F(EXT_vertex_array_bgra) }, 89 { OFF, "GL_ARB_vertex_array_object", F(ARB_vertex_array_object) }, 90 { ON, "GL_ARB_vertex_buffer_object", F(ARB_vertex_buffer_object) }, 91 { OFF, "GL_ARB_vertex_program", F(ARB_vertex_program) }, 92 { OFF, "GL_ARB_vertex_shader", F(ARB_vertex_shader) }, 93 { ON, "GL_ARB_window_pos", F(ARB_window_pos) }, 94 { ON, "GL_EXT_abgr", F(EXT_abgr) }, 95 { ON, "GL_EXT_bgra", F(EXT_bgra) }, 96 { OFF, "GL_EXT_blend_color", F(EXT_blend_color) }, 97 { OFF, "GL_EXT_blend_equation_separate", F(EXT_blend_equation_separate) }, 98 { OFF, "GL_EXT_blend_func_separate", F(EXT_blend_func_separate) }, 99 { OFF, "GL_EXT_blend_logic_op", F(EXT_blend_logic_op) }, 100 { OFF, "GL_EXT_blend_minmax", F(EXT_blend_minmax) }, 101 { OFF, "GL_EXT_blend_subtract", F(EXT_blend_subtract) }, 102 { OFF, "GL_EXT_clip_volume_hint", F(EXT_clip_volume_hint) }, 103 { OFF, "GL_EXT_cull_vertex", F(EXT_cull_vertex) }, 104 { ON, "GL_EXT_compiled_vertex_array", F(EXT_compiled_vertex_array) }, 105 { OFF, "GL_EXT_convolution", F(EXT_convolution) }, 106 { ON, "GL_EXT_copy_texture", F(EXT_copy_texture) }, 107 { OFF, "GL_EXT_depth_bounds_test", F(EXT_depth_bounds_test) }, 108 { OFF, "GL_EXT_draw_buffers2", F(EXT_draw_buffers2) }, 109 { ON, "GL_EXT_draw_range_elements", F(EXT_draw_range_elements) }, 110 { OFF, "GL_EXT_framebuffer_blit", F(EXT_framebuffer_blit) }, 111 { OFF, "GL_EXT_framebuffer_multisample", F(EXT_framebuffer_multisample) }, 112 { OFF, "GL_EXT_framebuffer_object", F(EXT_framebuffer_object) }, 113 { OFF, "GL_EXT_fog_coord", F(EXT_fog_coord) }, 114 { OFF, "GL_EXT_gpu_program_parameters", F(EXT_gpu_program_parameters) }, 115 { OFF, "GL_EXT_histogram", F(EXT_histogram) }, 116 { ON, "GL_EXT_multi_draw_arrays", F(EXT_multi_draw_arrays) }, 117 { OFF, "GL_EXT_packed_depth_stencil", F(EXT_packed_depth_stencil) }, 118 { ON, "GL_EXT_packed_pixels", F(EXT_packed_pixels) }, 119 { OFF, "GL_EXT_paletted_texture", F(EXT_paletted_texture) }, 120 { OFF, "GL_EXT_pixel_buffer_object", F(EXT_pixel_buffer_object) }, 121 { OFF, "GL_EXT_point_parameters", F(EXT_point_parameters) }, 122 { ON, "GL_EXT_polygon_offset", F(EXT_polygon_offset) }, 123 { OFF, "GL_EXT_provoking_vertex", F(EXT_provoking_vertex) }, 124 { ON, "GL_EXT_rescale_normal", F(EXT_rescale_normal) }, 125 { OFF, "GL_EXT_secondary_color", F(EXT_secondary_color) }, 126 { ON, "GL_EXT_separate_specular_color", F(EXT_separate_specular_color) }, 127 { OFF, "GL_EXT_shadow_funcs", F(EXT_shadow_funcs) }, 128 { OFF, "GL_EXT_shared_texture_palette", F(EXT_shared_texture_palette) }, 129 { OFF, "GL_EXT_stencil_two_side", F(EXT_stencil_two_side) }, 130 { OFF, "GL_EXT_stencil_wrap", F(EXT_stencil_wrap) }, 131 { ON, "GL_EXT_subtexture", F(EXT_subtexture) }, 132 { ON, "GL_EXT_texture", F(EXT_texture) }, 133 { ON, "GL_EXT_texture3D", F(EXT_texture3D) }, 134 { OFF, "GL_EXT_texture_array", F(EXT_texture_array) }, 135 { OFF, "GL_EXT_texture_compression_s3tc", F(EXT_texture_compression_s3tc) }, 136 { OFF, "GL_EXT_texture_cube_map", F(ARB_texture_cube_map) }, 137 { ON, "GL_EXT_texture_edge_clamp", F(SGIS_texture_edge_clamp) }, 138 { OFF, "GL_EXT_texture_env_add", F(EXT_texture_env_add) }, 139 { OFF, "GL_EXT_texture_env_combine", F(EXT_texture_env_combine) }, 140 { OFF, "GL_EXT_texture_env_dot3", F(EXT_texture_env_dot3) }, 141 { OFF, "GL_EXT_texture_filter_anisotropic", F(EXT_texture_filter_anisotropic) }, 142 { OFF, "GL_EXT_texture_lod_bias", F(EXT_texture_lod_bias) }, 143 { OFF, "GL_EXT_texture_mirror_clamp", F(EXT_texture_mirror_clamp) }, 144 { ON, "GL_EXT_texture_object", F(EXT_texture_object) }, 145 { OFF, "GL_EXT_texture_rectangle", F(NV_texture_rectangle) }, 146 { OFF, "GL_EXT_texture_sRGB", F(EXT_texture_sRGB) }, 147 { OFF, "GL_EXT_texture_swizzle", F(EXT_texture_swizzle) }, 148 { OFF, "GL_EXT_timer_query", F(EXT_timer_query) }, 149 { ON, "GL_EXT_vertex_array", F(EXT_vertex_array) }, 150 { OFF, "GL_EXT_vertex_array_bgra", F(EXT_vertex_array_bgra) }, 151 { OFF, "GL_EXT_vertex_array_set", F(EXT_vertex_array_set) }, 152 { OFF, "GL_3DFX_texture_compression_FXT1", F(TDFX_texture_compression_FXT1) }, 153 { OFF, "GL_APPLE_client_storage", F(APPLE_client_storage) }, 154 { ON, "GL_APPLE_packed_pixels", F(APPLE_packed_pixels) }, 155 { OFF, "GL_APPLE_vertex_array_object", F(APPLE_vertex_array_object) }, 156 { OFF, "GL_APPLE_object_purgeable", F(APPLE_object_purgeable) }, 157 { OFF, "GL_ATI_blend_equation_separate", F(EXT_blend_equation_separate) }, 158 { OFF, "GL_ATI_envmap_bumpmap", F(ATI_envmap_bumpmap) }, 159 { OFF, "GL_ATI_texture_env_combine3", F(ATI_texture_env_combine3)}, 160 { OFF, "GL_ATI_texture_mirror_once", F(ATI_texture_mirror_once)}, 161 { OFF, "GL_ATI_fragment_shader", F(ATI_fragment_shader)}, 162 { OFF, "GL_ATI_separate_stencil", F(ATI_separate_stencil)}, 163 { ON, "GL_IBM_multimode_draw_arrays", F(IBM_multimode_draw_arrays) }, 164 { ON, "GL_IBM_rasterpos_clip", F(IBM_rasterpos_clip) }, 165 { OFF, "GL_IBM_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)}, 166 { OFF, "GL_INGR_blend_func_separate", F(EXT_blend_func_separate) }, 167 { OFF, "GL_MESA_pack_invert", F(MESA_pack_invert) }, 168 { OFF, "GL_MESA_packed_depth_stencil", F(MESA_packed_depth_stencil) }, 169 { OFF, "GL_MESA_resize_buffers", F(MESA_resize_buffers) }, 170 { OFF, "GL_MESA_texture_array", F(MESA_texture_array) }, 171 { OFF, "GL_MESA_texture_signed_rgba", F(MESA_texture_signed_rgba) }, 172 { OFF, "GL_MESA_ycbcr_texture", F(MESA_ycbcr_texture) }, 173 { ON, "GL_MESA_window_pos", F(ARB_window_pos) }, 174 { OFF, "GL_NV_blend_square", F(NV_blend_square) }, 175 { OFF, "GL_NV_conditional_render", F(NV_conditional_render) }, 176 { OFF, "GL_NV_depth_clamp", F(ARB_depth_clamp) }, 177 { OFF, "GL_NV_fragment_program", F(NV_fragment_program) }, 178 { OFF, "GL_NV_fragment_program_option", F(NV_fragment_program_option) }, 179 { ON, "GL_NV_light_max_exponent", F(NV_light_max_exponent) }, 180 { OFF, "GL_NV_packed_depth_stencil", F(EXT_packed_depth_stencil) }, 181 { OFF, "GL_NV_point_sprite", F(NV_point_sprite) }, 182 { OFF, "GL_NV_texture_env_combine4", F(NV_texture_env_combine4) }, 183 { OFF, "GL_NV_texture_rectangle", F(NV_texture_rectangle) }, 184 { ON, "GL_NV_texgen_reflection", F(NV_texgen_reflection) }, 185 { OFF, "GL_NV_vertex_program", F(NV_vertex_program) }, 186 { OFF, "GL_NV_vertex_program1_1", F(NV_vertex_program1_1) }, 187 { ON, "GL_OES_read_format", F(OES_read_format) }, 188 { OFF, "GL_SGI_color_matrix", F(SGI_color_matrix) }, 189 { OFF, "GL_SGI_color_table", F(SGI_color_table) }, 190 { OFF, "GL_SGI_texture_color_table", F(SGI_texture_color_table) }, 191 { OFF, "GL_SGIS_generate_mipmap", F(SGIS_generate_mipmap) }, 192 { OFF, "GL_SGIS_texture_border_clamp", F(ARB_texture_border_clamp) }, 193 { ON, "GL_SGIS_texture_edge_clamp", F(SGIS_texture_edge_clamp) }, 194 { ON, "GL_SGIS_texture_lod", F(SGIS_texture_lod) }, 195 { ON, "GL_SUN_multi_draw_arrays", F(EXT_multi_draw_arrays) }, 196 { OFF, "GL_S3_s3tc", F(S3_s3tc) }, 197#if FEATURE_OES_draw_texture 198 { OFF, "GL_OES_draw_texture", F(OES_draw_texture) }, 199#endif /* FEATURE_OES_draw_texture */ 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 ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE; 217#if FEATURE_ARB_fragment_program 218 ctx->Extensions.ARB_fragment_program = GL_TRUE; 219 ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE; 220#endif 221#if FEATURE_ARB_fragment_shader 222 ctx->Extensions.ARB_fragment_shader = GL_TRUE; 223#endif 224#if FEATURE_ARB_framebuffer_object 225 ctx->Extensions.ARB_framebuffer_object = GL_TRUE; 226#endif 227 ctx->Extensions.ARB_half_float_pixel = GL_TRUE; 228 ctx->Extensions.ARB_half_float_vertex = GL_TRUE; 229 ctx->Extensions.ARB_imaging = GL_TRUE; 230 ctx->Extensions.ARB_map_buffer_range = GL_TRUE; 231 ctx->Extensions.ARB_multitexture = GL_TRUE; 232#if FEATURE_queryobj 233 ctx->Extensions.ARB_occlusion_query = GL_TRUE; 234#endif 235 ctx->Extensions.ARB_point_sprite = GL_TRUE; 236#if FEATURE_ARB_shader_objects 237 ctx->Extensions.ARB_shader_objects = GL_TRUE; 238#endif 239#if FEATURE_ARB_shading_language_100 240 ctx->Extensions.ARB_shading_language_100 = GL_TRUE; 241#endif 242#if FEATURE_ARB_shading_language_120 243 ctx->Extensions.ARB_shading_language_120 = GL_TRUE; 244#endif 245 ctx->Extensions.ARB_shadow = GL_TRUE; 246 ctx->Extensions.ARB_shadow_ambient = GL_TRUE; 247 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; 248 ctx->Extensions.ARB_texture_cube_map = GL_TRUE; 249 ctx->Extensions.ARB_texture_env_combine = GL_TRUE; 250 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE; 251 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE; 252 /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/ 253 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE; 254 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE; 255 ctx->Extensions.ARB_vertex_array_object = GL_TRUE; 256#if FEATURE_ARB_vertex_program 257 ctx->Extensions.ARB_vertex_program = GL_TRUE; 258#endif 259#if FEATURE_ARB_vertex_shader 260 ctx->Extensions.ARB_vertex_shader = GL_TRUE; 261#endif 262#if FEATURE_ARB_vertex_buffer_object 263 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/ 264#endif 265#if FEATURE_ARB_sync 266 ctx->Extensions.ARB_sync = GL_TRUE; 267#endif 268 ctx->Extensions.APPLE_vertex_array_object = GL_TRUE; 269#if FEATURE_APPLE_object_purgeable 270 ctx->Extensions.APPLE_object_purgeable = GL_TRUE; 271#endif 272 ctx->Extensions.ATI_envmap_bumpmap = GL_TRUE; 273#if FEATURE_ATI_fragment_shader 274 ctx->Extensions.ATI_fragment_shader = GL_TRUE; 275#endif 276 ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE; 277 ctx->Extensions.ATI_texture_mirror_once = GL_TRUE; 278 ctx->Extensions.ATI_separate_stencil = GL_TRUE; 279 ctx->Extensions.EXT_blend_color = GL_TRUE; 280 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE; 281 ctx->Extensions.EXT_blend_func_separate = GL_TRUE; 282 ctx->Extensions.EXT_blend_logic_op = GL_TRUE; 283 ctx->Extensions.EXT_blend_minmax = GL_TRUE; 284 ctx->Extensions.EXT_blend_subtract = GL_TRUE; 285 ctx->Extensions.EXT_convolution = GL_TRUE; 286 ctx->Extensions.EXT_depth_bounds_test = GL_TRUE; 287 ctx->Extensions.EXT_draw_buffers2 = GL_TRUE; 288 ctx->Extensions.EXT_fog_coord = GL_TRUE; 289#if FEATURE_EXT_framebuffer_object 290 ctx->Extensions.EXT_framebuffer_object = GL_TRUE; 291#endif 292#if FEATURE_EXT_framebuffer_blit 293 ctx->Extensions.EXT_framebuffer_blit = GL_TRUE; 294#endif 295#if FEATURE_ARB_framebuffer_object 296 ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE; 297#endif 298 ctx->Extensions.EXT_histogram = GL_TRUE; 299 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/ 300 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE; 301 ctx->Extensions.EXT_paletted_texture = GL_TRUE; 302#if FEATURE_EXT_pixel_buffer_object 303 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE; 304#endif 305 ctx->Extensions.EXT_point_parameters = GL_TRUE; 306 ctx->Extensions.EXT_provoking_vertex = GL_TRUE; 307 ctx->Extensions.EXT_shadow_funcs = GL_TRUE; 308 ctx->Extensions.EXT_secondary_color = GL_TRUE; 309 ctx->Extensions.EXT_shared_texture_palette = GL_TRUE; 310 ctx->Extensions.EXT_stencil_wrap = GL_TRUE; 311 ctx->Extensions.EXT_stencil_two_side = GL_TRUE; 312 ctx->Extensions.EXT_texture_array = GL_TRUE; 313 ctx->Extensions.EXT_texture_env_add = GL_TRUE; 314 ctx->Extensions.EXT_texture_env_combine = GL_TRUE; 315 ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE; 316 ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE; 317 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE; 318#if FEATURE_EXT_texture_sRGB 319 ctx->Extensions.EXT_texture_sRGB = GL_TRUE; 320#endif 321 ctx->Extensions.EXT_texture_swizzle = GL_TRUE; 322 ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE; 323 /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/ 324 ctx->Extensions.MESA_pack_invert = GL_TRUE; 325 ctx->Extensions.MESA_resize_buffers = GL_TRUE; 326 ctx->Extensions.MESA_texture_array = GL_TRUE; 327 ctx->Extensions.MESA_ycbcr_texture = GL_TRUE; 328 ctx->Extensions.NV_blend_square = GL_TRUE; 329 ctx->Extensions.NV_conditional_render = GL_TRUE; 330 /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/ 331 ctx->Extensions.NV_point_sprite = GL_TRUE; 332 ctx->Extensions.NV_texture_env_combine4 = GL_TRUE; 333 ctx->Extensions.NV_texture_rectangle = GL_TRUE; 334 /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/ 335#if FEATURE_NV_vertex_program 336 ctx->Extensions.NV_vertex_program = GL_TRUE; 337 ctx->Extensions.NV_vertex_program1_1 = GL_TRUE; 338#endif 339#if FEATURE_NV_fragment_program 340 ctx->Extensions.NV_fragment_program = GL_TRUE; 341#endif 342#if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program 343 ctx->Extensions.NV_fragment_program_option = GL_TRUE; 344#endif 345 ctx->Extensions.SGI_color_matrix = GL_TRUE; 346 ctx->Extensions.SGI_color_table = GL_TRUE; 347 ctx->Extensions.SGI_texture_color_table = GL_TRUE; 348 ctx->Extensions.SGIS_generate_mipmap = GL_TRUE; 349 ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE; 350#if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program 351 ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE; 352#endif 353#if FEATURE_texture_fxt1 354 _mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1"); 355#endif 356#if FEATURE_texture_s3tc 357 if (ctx->Mesa_DXTn) { 358 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc"); 359 _mesa_enable_extension(ctx, "GL_S3_s3tc"); 360 } 361#endif 362} 363 364 365/** 366 * Enable GL_ARB_imaging and all the EXT extensions that are subsets of it. 367 */ 368void 369_mesa_enable_imaging_extensions(GLcontext *ctx) 370{ 371 ctx->Extensions.ARB_imaging = GL_TRUE; 372 ctx->Extensions.EXT_blend_color = GL_TRUE; 373 ctx->Extensions.EXT_blend_logic_op = GL_TRUE; 374 ctx->Extensions.EXT_blend_minmax = GL_TRUE; 375 ctx->Extensions.EXT_blend_subtract = GL_TRUE; 376 ctx->Extensions.EXT_convolution = GL_TRUE; 377 ctx->Extensions.EXT_histogram = GL_TRUE; 378 ctx->Extensions.SGI_color_matrix = GL_TRUE; 379 ctx->Extensions.SGI_color_table = GL_TRUE; 380} 381 382 383 384/** 385 * Enable all OpenGL 1.3 features and extensions. 386 * A convenience function to be called by drivers. 387 */ 388void 389_mesa_enable_1_3_extensions(GLcontext *ctx) 390{ 391 /*ctx->Extensions.ARB_multisample = GL_TRUE;*/ 392 ctx->Extensions.ARB_multitexture = GL_TRUE; 393 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; 394 /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/ 395 ctx->Extensions.ARB_texture_cube_map = GL_TRUE; 396 ctx->Extensions.ARB_texture_env_combine = GL_TRUE; 397 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE; 398 ctx->Extensions.EXT_texture_env_add = GL_TRUE; 399 /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/ 400} 401 402 403 404/** 405 * Enable all OpenGL 1.4 features and extensions. 406 * A convenience function to be called by drivers. 407 */ 408void 409_mesa_enable_1_4_extensions(GLcontext *ctx) 410{ 411 ctx->Extensions.ARB_depth_texture = GL_TRUE; 412 ctx->Extensions.ARB_shadow = GL_TRUE; 413 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE; 414 ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE; 415 ctx->Extensions.ARB_window_pos = GL_TRUE; 416 ctx->Extensions.EXT_blend_color = GL_TRUE; 417 ctx->Extensions.EXT_blend_func_separate = GL_TRUE; 418 ctx->Extensions.EXT_blend_minmax = GL_TRUE; 419 ctx->Extensions.EXT_blend_subtract = GL_TRUE; 420 ctx->Extensions.EXT_fog_coord = GL_TRUE; 421 /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/ 422 ctx->Extensions.EXT_point_parameters = GL_TRUE; 423 ctx->Extensions.EXT_secondary_color = GL_TRUE; 424 ctx->Extensions.EXT_stencil_wrap = GL_TRUE; 425 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE; 426 ctx->Extensions.SGIS_generate_mipmap = GL_TRUE; 427} 428 429 430/** 431 * Enable all OpenGL 1.5 features and extensions. 432 * A convenience function to be called by drivers. 433 */ 434void 435_mesa_enable_1_5_extensions(GLcontext *ctx) 436{ 437 ctx->Extensions.ARB_occlusion_query = GL_TRUE; 438 /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/ 439 ctx->Extensions.EXT_shadow_funcs = GL_TRUE; 440} 441 442 443/** 444 * Enable all OpenGL 2.0 features and extensions. 445 * A convenience function to be called by drivers. 446 */ 447void 448_mesa_enable_2_0_extensions(GLcontext *ctx) 449{ 450 /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/ 451#if FEATURE_ARB_fragment_shader 452 ctx->Extensions.ARB_fragment_shader = GL_TRUE; 453#endif 454 ctx->Extensions.ARB_point_sprite = GL_TRUE; 455 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE; 456 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE; 457#if FEATURE_ARB_shader_objects 458 ctx->Extensions.ARB_shader_objects = GL_TRUE; 459#endif 460#if FEATURE_ARB_shading_language_100 461 ctx->Extensions.ARB_shading_language_100 = GL_TRUE; 462#endif 463 ctx->Extensions.EXT_stencil_two_side = GL_TRUE; 464#if FEATURE_ARB_vertex_shader 465 ctx->Extensions.ARB_vertex_shader = GL_TRUE; 466#endif 467} 468 469 470/** 471 * Enable all OpenGL 2.1 features and extensions. 472 * A convenience function to be called by drivers. 473 */ 474void 475_mesa_enable_2_1_extensions(GLcontext *ctx) 476{ 477#if FEATURE_EXT_pixel_buffer_object 478 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE; 479#endif 480#if FEATURE_EXT_texture_sRGB 481 ctx->Extensions.EXT_texture_sRGB = GL_TRUE; 482#endif 483#ifdef FEATURE_ARB_shading_language_120 484 ctx->Extensions.ARB_shading_language_120 = GL_TRUE; 485#endif 486} 487 488 489 490/** 491 * Either enable or disable the named extension. 492 * \return GL_TRUE for success, GL_FALSE if invalid extension name 493 */ 494static GLboolean 495set_extension( GLcontext *ctx, const char *name, GLboolean state ) 496{ 497 GLboolean *base = (GLboolean *) &ctx->Extensions; 498 GLuint i; 499 500 if (ctx->Extensions.String) { 501 /* The string was already queried - can't change it now! */ 502 _mesa_problem(ctx, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name); 503 return GL_FALSE; 504 } 505 506 for (i = 0 ; i < Elements(default_extensions) ; i++) { 507 if (strcmp(default_extensions[i].name, name) == 0) { 508 if (default_extensions[i].flag_offset) { 509 GLboolean *enabled = base + default_extensions[i].flag_offset; 510 *enabled = state; 511 } 512 return GL_TRUE; 513 } 514 } 515 return GL_FALSE; 516} 517 518 519/** 520 * Enable the named extension. 521 * Typically called by drivers. 522 */ 523void 524_mesa_enable_extension( GLcontext *ctx, const char *name ) 525{ 526 if (!set_extension(ctx, name, GL_TRUE)) 527 _mesa_problem(ctx, "Trying to enable unknown extension: %s", name); 528} 529 530 531/** 532 * Disable the named extension. 533 * XXX is this really needed??? 534 */ 535void 536_mesa_disable_extension( GLcontext *ctx, const char *name ) 537{ 538 if (!set_extension(ctx, name, GL_FALSE)) 539 _mesa_problem(ctx, "Trying to disable unknown extension: %s", name); 540} 541 542 543/** 544 * Check if the i-th extension is enabled. 545 */ 546static GLboolean 547extension_enabled(GLcontext *ctx, GLuint index) 548{ 549 const GLboolean *base = (const GLboolean *) &ctx->Extensions; 550 if (!default_extensions[index].flag_offset || 551 *(base + default_extensions[index].flag_offset)) { 552 return GL_TRUE; 553 } 554 else { 555 return GL_FALSE; 556 } 557} 558 559 560/** 561 * Test if the named extension is enabled in this context. 562 */ 563GLboolean 564_mesa_extension_is_enabled( GLcontext *ctx, const char *name ) 565{ 566 GLuint i; 567 568 for (i = 0 ; i < Elements(default_extensions) ; i++) { 569 if (strcmp(default_extensions[i].name, name) == 0) { 570 return extension_enabled(ctx, i); 571 } 572 } 573 return GL_FALSE; 574} 575 576 577/** 578 * Append string 'b' onto string 'a'. Free 'a' and return new string. 579 */ 580static char * 581append(const char *a, const char *b) 582{ 583 const GLuint aLen = a ? strlen(a) : 0; 584 const GLuint bLen = b ? strlen(b) : 0; 585 char *s = calloc(1, aLen + bLen + 1); 586 if (s) { 587 if (a) 588 memcpy(s, a, aLen); 589 if (b) 590 memcpy(s + aLen, b, bLen); 591 s[aLen + bLen] = '\0'; 592 } 593 if (a) 594 free((void *) a); 595 return s; 596} 597 598 599/** 600 * Check the MESA_EXTENSION_OVERRIDE env var. 601 * For extension names that are recognized, turn them on. For extension 602 * names that are recognized and prefixed with '-', turn them off. 603 * Return a string of the unknown/leftover names. 604 */ 605static const char * 606get_extension_override( GLcontext *ctx ) 607{ 608 const char *envExt = _mesa_getenv("MESA_EXTENSION_OVERRIDE"); 609 char *extraExt = NULL; 610 char ext[1000]; 611 GLuint extLen = 0; 612 GLuint i; 613 GLboolean disableExt = GL_FALSE; 614 615 if (!envExt) 616 return NULL; 617 618 for (i = 0; ; i++) { 619 if (envExt[i] == '\0' || envExt[i] == ' ') { 620 /* terminate/process 'ext' if extLen > 0 */ 621 if (extLen > 0) { 622 assert(extLen < sizeof(ext)); 623 /* enable extension named by 'ext' */ 624 ext[extLen] = 0; 625 if (!set_extension(ctx, ext, !disableExt)) { 626 /* unknown extension name, append it to extraExt */ 627 if (extraExt) { 628 extraExt = append(extraExt, " "); 629 } 630 extraExt = append(extraExt, ext); 631 } 632 extLen = 0; 633 disableExt = GL_FALSE; 634 } 635 if (envExt[i] == '\0') 636 break; 637 } 638 else if (envExt[i] == '-') { 639 disableExt = GL_TRUE; 640 } 641 else { 642 /* accumulate this non-space character */ 643 ext[extLen++] = envExt[i]; 644 } 645 } 646 647 return extraExt; 648} 649 650 651/** 652 * Run through the default_extensions array above and set the 653 * ctx->Extensions.ARB/EXT_* flags accordingly. 654 * To be called during context initialization. 655 */ 656void 657_mesa_init_extensions( GLcontext *ctx ) 658{ 659 GLboolean *base = (GLboolean *) &ctx->Extensions; 660 GLuint i; 661 662 for (i = 0 ; i < Elements(default_extensions) ; i++) { 663 if (default_extensions[i].enabled && 664 default_extensions[i].flag_offset) { 665 *(base + default_extensions[i].flag_offset) = GL_TRUE; 666 } 667 } 668} 669 670 671/** 672 * Construct the GL_EXTENSIONS string. Called the first time that 673 * glGetString(GL_EXTENSIONS) is called. 674 */ 675GLubyte * 676_mesa_make_extension_string( GLcontext *ctx ) 677{ 678 const char *extraExt = get_extension_override(ctx); 679 GLuint extStrLen = 0; 680 char *s; 681 GLuint i; 682 683 /* first, compute length of the extension string */ 684 for (i = 0 ; i < Elements(default_extensions) ; i++) { 685 if (extension_enabled(ctx, i)) { 686 extStrLen += (GLuint) strlen(default_extensions[i].name) + 1; 687 } 688 } 689 690 if (extraExt) 691 extStrLen += strlen(extraExt) + 1; /* +1 for space */ 692 693 /* allocate the extension string */ 694 s = (char *) malloc(extStrLen); 695 if (!s) 696 return NULL; 697 698 /* second, build the extension string */ 699 extStrLen = 0; 700 for (i = 0 ; i < Elements(default_extensions) ; i++) { 701 if (extension_enabled(ctx, i)) { 702 GLuint len = (GLuint) strlen(default_extensions[i].name); 703 memcpy(s + extStrLen, default_extensions[i].name, len); 704 extStrLen += len; 705 s[extStrLen] = ' '; 706 extStrLen++; 707 } 708 } 709 ASSERT(extStrLen > 0); 710 711 s[extStrLen - 1] = 0; /* -1 to overwrite trailing the ' ' */ 712 713 if (extraExt) { 714 s = append(s, " "); 715 s = append(s, extraExt); 716 } 717 718 return (GLubyte *) s; 719} 720 721 722/** 723 * Return number of enabled extensions. 724 */ 725GLuint 726_mesa_get_extension_count(GLcontext *ctx) 727{ 728 GLuint i; 729 730 /* only count once */ 731 if (!ctx->Extensions.Count) { 732 for (i = 0; i < Elements(default_extensions); i++) { 733 if (extension_enabled(ctx, i)) { 734 ctx->Extensions.Count++; 735 } 736 } 737 } 738 739 if (0) 740 _mesa_debug(ctx, "%u of %d extensions enabled\n", ctx->Extensions.Count, 741 Elements(default_extensions)); 742 743 return ctx->Extensions.Count; 744} 745 746 747/** 748 * Return name of i-th enabled extension 749 */ 750const GLubyte * 751_mesa_get_enabled_extension(GLcontext *ctx, GLuint index) 752{ 753 GLuint i; 754 755 for (i = 0; i < Elements(default_extensions); i++) { 756 if (extension_enabled(ctx, i)) { 757 if (index == 0) 758 return (const GLubyte *) default_extensions[i].name; 759 index--; 760 } 761 } 762 763 return NULL; 764} 765