/* * Mesa 3-D graphics library * Version: 7.6 * * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. * Copyright (C) 2009 VMware, Inc. All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /** * \file * \brief Extension handling */ #include "glheader.h" #include "imports.h" #include "context.h" #include "extensions.h" #include "mfeatures.h" #include "mtypes.h" enum { DISABLE = 0, GL = 1 << API_OPENGL, ES1 = 1 << API_OPENGLES, ES2 = 1 << API_OPENGLES2, }; /** * \brief An element of the \c extension_table. */ struct extension { /** Name of extension, such as "GL_ARB_depth_clamp". */ const char *name; /** Offset (in bytes) of the corresponding member in struct gl_extensions. */ size_t offset; /** Set of API's in which the extension exists, as a bitset. */ uint8_t api_set; }; /** * Given a member \c x of struct gl_extensions, return offset of * \c x in bytes. */ #define o(x) offsetof(struct gl_extensions, x) /** * \brief Table of supported OpenGL extensions for all API's. * * Note: The GL_MESAX_* extensions are placeholders for future ARB extensions. */ static const struct extension extension_table[] = { /* ARB Extensions */ { "GL_ARB_blend_func_extended", o(ARB_blend_func_extended), GL }, { "GL_ARB_copy_buffer", o(ARB_copy_buffer), GL }, { "GL_ARB_depth_buffer_float", o(ARB_depth_buffer_float), GL }, { "GL_ARB_depth_clamp", o(ARB_depth_clamp), GL }, { "GL_ARB_depth_texture", o(ARB_depth_texture), GL }, { "GL_ARB_draw_buffers", o(ARB_draw_buffers), GL }, { "GL_ARB_draw_elements_base_vertex", o(ARB_draw_elements_base_vertex), GL }, { "GL_ARB_draw_instanced", o(ARB_draw_instanced), GL }, { "GL_ARB_explicit_attrib_location", o(ARB_explicit_attrib_location), GL }, { "GL_ARB_fragment_coord_conventions", o(ARB_fragment_coord_conventions), GL }, { "GL_ARB_fragment_program", o(ARB_fragment_program), GL }, { "GL_ARB_fragment_program_shadow", o(ARB_fragment_program_shadow), GL }, { "GL_ARB_fragment_shader", o(ARB_fragment_shader), GL }, { "GL_ARB_framebuffer_object", o(ARB_framebuffer_object), GL }, { "GL_ARB_half_float_pixel", o(ARB_half_float_pixel), GL }, { "GL_ARB_half_float_vertex", o(ARB_half_float_vertex), GL }, { "GL_ARB_instanced_arrays", o(ARB_instanced_arrays), GL }, { "GL_ARB_map_buffer_range", o(ARB_map_buffer_range), GL }, { "GL_ARB_multisample", o(ARB_multisample), GL }, { "GL_ARB_multitexture", o(ARB_multitexture), GL }, { "GL_ARB_occlusion_query2", o(ARB_occlusion_query2), GL }, { "GL_ARB_occlusion_query", o(ARB_occlusion_query), GL }, { "GL_ARB_pixel_buffer_object", o(EXT_pixel_buffer_object), GL }, { "GL_ARB_point_parameters", o(EXT_point_parameters), GL }, { "GL_ARB_point_sprite", o(ARB_point_sprite), GL }, { "GL_ARB_provoking_vertex", o(EXT_provoking_vertex), GL }, { "GL_ARB_sampler_objects", o(ARB_sampler_objects), GL }, { "GL_ARB_seamless_cube_map", o(ARB_seamless_cube_map), GL }, { "GL_ARB_shader_objects", o(ARB_shader_objects), GL }, { "GL_ARB_shader_stencil_export", o(ARB_shader_stencil_export), GL }, { "GL_ARB_shading_language_100", o(ARB_shading_language_100), GL }, { "GL_ARB_shadow_ambient", o(ARB_shadow_ambient), GL }, { "GL_ARB_shadow", o(ARB_shadow), GL }, { "GL_ARB_sync", o(ARB_sync), GL }, { "GL_ARB_texture_border_clamp", o(ARB_texture_border_clamp), GL }, { "GL_ARB_texture_buffer_object", o(ARB_texture_buffer_object), GL }, { "GL_ARB_texture_compression", o(ARB_texture_compression), GL }, { "GL_ARB_texture_compression_rgtc", o(ARB_texture_compression_rgtc), GL }, { "GL_ARB_texture_cube_map", o(ARB_texture_cube_map), GL }, { "GL_ARB_texture_env_add", o(EXT_texture_env_add), GL }, { "GL_ARB_texture_env_combine", o(ARB_texture_env_combine), GL }, { "GL_ARB_texture_env_crossbar", o(ARB_texture_env_crossbar), GL }, { "GL_ARB_texture_env_dot3", o(ARB_texture_env_dot3), GL }, { "GL_ARB_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat), GL }, { "GL_ARB_texture_multisample", o(ARB_texture_multisample), GL }, { "GL_ARB_texture_non_power_of_two", o(ARB_texture_non_power_of_two), GL }, { "GL_ARB_texture_rectangle", o(NV_texture_rectangle), GL }, { "GL_ARB_texture_rgb10_a2ui", o(ARB_texture_rgb10_a2ui), GL }, { "GL_ARB_texture_rg", o(ARB_texture_rg), GL }, { "GL_ARB_texture_swizzle", o(EXT_texture_swizzle), GL }, { "GL_ARB_transform_feedback2", o(ARB_transform_feedback2), GL }, { "GL_ARB_transpose_matrix", o(ARB_transpose_matrix), GL }, { "GL_ARB_uniform_buffer_object", o(ARB_uniform_buffer_object), GL }, { "GL_ARB_vertex_array_bgra", o(EXT_vertex_array_bgra), GL }, { "GL_ARB_vertex_array_object", o(ARB_vertex_array_object), GL }, { "GL_ARB_vertex_buffer_object", o(ARB_vertex_buffer_object), GL }, { "GL_ARB_vertex_program", o(ARB_vertex_program), GL }, { "GL_ARB_vertex_shader", o(ARB_vertex_shader), GL }, { "GL_ARB_vertex_type_2_10_10_10_rev", o(ARB_vertex_type_2_10_10_10_rev), GL }, { "GL_ARB_window_pos", o(ARB_window_pos), GL }, /* EXT extensions */ { "GL_EXT_abgr", o(EXT_abgr), GL }, { "GL_EXT_bgra", o(EXT_bgra), GL }, { "GL_EXT_blend_color", o(EXT_blend_color), GL }, { "GL_EXT_blend_equation_separate", o(EXT_blend_equation_separate), GL }, { "GL_EXT_blend_func_separate", o(EXT_blend_func_separate), GL }, { "GL_EXT_blend_logic_op", o(EXT_blend_logic_op), GL }, { "GL_EXT_blend_minmax", o(EXT_blend_minmax), GL | ES1 | ES2 }, { "GL_EXT_blend_subtract", o(EXT_blend_subtract), GL }, { "GL_EXT_clip_volume_hint", o(EXT_clip_volume_hint), GL }, { "GL_EXT_compiled_vertex_array", o(EXT_compiled_vertex_array), GL }, { "GL_EXT_copy_texture", o(EXT_copy_texture), GL }, { "GL_EXT_depth_bounds_test", o(EXT_depth_bounds_test), GL }, { "GL_EXT_draw_buffers2", o(EXT_draw_buffers2), GL }, { "GL_EXT_draw_instanced", o(ARB_draw_instanced), GL }, { "GL_EXT_draw_range_elements", o(EXT_draw_range_elements), GL }, { "GL_EXT_fog_coord", o(EXT_fog_coord), GL }, { "GL_EXT_framebuffer_blit", o(EXT_framebuffer_blit), GL }, { "GL_EXT_framebuffer_multisample", o(EXT_framebuffer_multisample), GL }, { "GL_EXT_framebuffer_object", o(EXT_framebuffer_object), GL }, { "GL_EXT_framebuffer_sRGB", o(EXT_framebuffer_sRGB), GL }, { "GL_EXT_gpu_program_parameters", o(EXT_gpu_program_parameters), GL }, { "GL_EXT_gpu_shader4", o(EXT_gpu_shader4), GL }, { "GL_EXT_multi_draw_arrays", o(EXT_multi_draw_arrays), GL | ES1 | ES2 }, { "GL_EXT_packed_depth_stencil", o(EXT_packed_depth_stencil), GL }, { "GL_EXT_packed_float", o(EXT_packed_float), GL }, { "GL_EXT_packed_pixels", o(EXT_packed_pixels), GL }, { "GL_EXT_paletted_texture", o(EXT_paletted_texture), GL }, { "GL_EXT_pixel_buffer_object", o(EXT_pixel_buffer_object), GL }, { "GL_EXT_point_parameters", o(EXT_point_parameters), GL }, { "GL_EXT_polygon_offset", o(EXT_polygon_offset), GL }, { "GL_EXT_provoking_vertex", o(EXT_provoking_vertex), GL }, { "GL_EXT_rescale_normal", o(EXT_rescale_normal), GL }, { "GL_EXT_secondary_color", o(EXT_secondary_color), GL }, { "GL_EXT_separate_shader_objects", o(EXT_separate_shader_objects), GL }, { "GL_EXT_separate_specular_color", o(EXT_separate_specular_color), GL }, { "GL_EXT_shadow_funcs", o(EXT_shadow_funcs), GL }, { "GL_EXT_shared_texture_palette", o(EXT_shared_texture_palette), GL }, { "GL_EXT_stencil_two_side", o(EXT_stencil_two_side), GL }, { "GL_EXT_stencil_wrap", o(EXT_stencil_wrap), GL }, { "GL_EXT_subtexture", o(EXT_subtexture), GL }, { "GL_EXT_texture3D", o(EXT_texture3D), GL }, { "GL_EXT_texture_array", o(EXT_texture_array), GL }, { "GL_EXT_texture_compression_dxt1", o(EXT_texture_compression_s3tc), GL | ES1 | ES2 }, { "GL_EXT_texture_compression_rgtc", o(ARB_texture_compression_rgtc), GL }, { "GL_EXT_texture_compression_s3tc", o(EXT_texture_compression_s3tc), GL }, { "GL_EXT_texture_cube_map", o(ARB_texture_cube_map), GL }, { "GL_EXT_texture_edge_clamp", o(SGIS_texture_edge_clamp), GL }, { "GL_EXT_texture_env_add", o(EXT_texture_env_add), GL }, { "GL_EXT_texture_env_combine", o(EXT_texture_env_combine), GL }, { "GL_EXT_texture_env_dot3", o(EXT_texture_env_dot3), GL }, { "GL_EXT_texture_filter_anisotropic", o(EXT_texture_filter_anisotropic), GL | ES1 | ES2 }, { "GL_EXT_texture_format_BGRA8888", o(EXT_texture_format_BGRA8888), ES1 | ES2 }, { "GL_EXT_texture_integer", o(EXT_texture_integer), GL }, { "GL_EXT_texture_lod_bias", o(EXT_texture_lod_bias), GL | ES1 }, { "GL_EXT_texture_mirror_clamp", o(EXT_texture_mirror_clamp), GL }, { "GL_EXT_texture_object", o(EXT_texture_object), GL }, { "GL_EXT_texture", o(EXT_texture), GL }, { "GL_EXT_texture_rectangle", o(NV_texture_rectangle), GL }, { "GL_EXT_texture_shared_exponent", o(EXT_texture_shared_exponent), GL }, { "GL_EXT_texture_sRGB", o(EXT_texture_sRGB), GL }, { "GL_EXT_texture_swizzle", o(EXT_texture_swizzle), GL }, { "GL_EXT_texture_type_2_10_10_10_REV", o(dummy_true), ES2 }, { "GL_EXT_timer_query", o(EXT_timer_query), GL }, { "GL_EXT_transform_feedback", o(EXT_transform_feedback), GL }, { "GL_EXT_vertex_array_bgra", o(EXT_vertex_array_bgra), GL }, { "GL_EXT_vertex_array", o(EXT_vertex_array), GL }, { "GL_EXT_vertex_array_set", o(EXT_vertex_array_set), GL }, /* OES extensions */ { "GL_OES_blend_equation_separate", o(EXT_blend_equation_separate), ES1 }, { "GL_OES_blend_func_separate", o(EXT_blend_func_separate), ES1 }, { "GL_OES_blend_subtract", o(EXT_blend_subtract), ES1 }, { "GL_OES_byte_coordinates", o(dummy_true), ES1 }, { "GL_OES_compressed_paletted_texture", o(dummy_false), DISABLE }, { "GL_OES_depth24", o(EXT_framebuffer_object), ES1 | ES2 }, { "GL_OES_depth32", o(dummy_false), DISABLE }, { "GL_OES_depth_texture", o(ARB_depth_texture), ES2 }, #if FEATURE_OES_draw_texture { "GL_OES_draw_texture", o(OES_draw_texture), ES1 | ES2 }, #endif #if FEATURE_OES_EGL_image /* FIXME: Mesa expects GL_OES_EGL_image to be available in OpenGL contexts. */ { "GL_OES_EGL_image", o(OES_EGL_image), GL | ES1 | ES2 }, #endif { "GL_OES_element_index_uint", o(EXT_vertex_array), ES1 | ES2 }, { "GL_OES_fbo_render_mipmap", o(EXT_framebuffer_object), ES1 | ES2 }, { "GL_OES_fixed_point", o(dummy_true), ES1 }, { "GL_OES_framebuffer_object", o(EXT_framebuffer_object), ES1 }, { "GL_OES_mapbuffer", o(ARB_vertex_buffer_object), ES1 | ES2 }, { "GL_OES_matrix_get", o(dummy_true), ES1 }, { "GL_OES_packed_depth_stencil", o(EXT_packed_depth_stencil), ES1 | ES2 }, { "GL_OES_point_size_array", o(dummy_true), ES1 }, { "GL_OES_point_sprite", o(ARB_point_sprite), ES1 }, { "GL_OES_query_matrix", o(dummy_true), ES1 }, { "GL_OES_read_format", o(OES_read_format), GL | ES1 }, { "GL_OES_rgb8_rgba8", o(EXT_framebuffer_object), ES1 | ES2 }, { "GL_OES_single_precision", o(dummy_true), ES1 }, { "GL_OES_standard_derivatives", o(ARB_fragment_shader), ES2 }, { "GL_OES_stencil1", o(dummy_false), DISABLE }, { "GL_OES_stencil4", o(dummy_false), DISABLE }, { "GL_OES_stencil8", o(EXT_framebuffer_object), ES1 | ES2 }, { "GL_OES_stencil_wrap", o(EXT_stencil_wrap), ES1 }, /* GL_OES_texture_3D is disabled due to missing GLSL support. */ { "GL_OES_texture_3D", o(EXT_texture3D), DISABLE }, { "GL_OES_texture_cube_map", o(ARB_texture_cube_map), ES1 }, { "GL_OES_texture_env_crossbar", o(ARB_texture_env_crossbar), ES1 }, { "GL_OES_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat), ES1 }, { "GL_OES_texture_npot", o(ARB_texture_non_power_of_two), ES2 }, /* Vendor extensions */ { "GL_3DFX_texture_compression_FXT1", o(TDFX_texture_compression_FXT1), GL }, { "GL_APPLE_client_storage", o(APPLE_client_storage), GL }, { "GL_APPLE_object_purgeable", o(APPLE_object_purgeable), GL }, { "GL_APPLE_packed_pixels", o(APPLE_packed_pixels), GL }, { "GL_APPLE_vertex_array_object", o(APPLE_vertex_array_object), GL }, { "GL_ATI_blend_equation_separate", o(EXT_blend_equation_separate), GL }, { "GL_ATI_envmap_bumpmap", o(ATI_envmap_bumpmap), GL }, { "GL_ATI_fragment_shader", o(ATI_fragment_shader), GL }, { "GL_ATI_separate_stencil", o(ATI_separate_stencil), GL }, { "GL_ATI_texture_env_combine3", o(ATI_texture_env_combine3), GL }, { "GL_ATI_texture_mirror_once", o(ATI_texture_mirror_once), GL }, { "GL_IBM_multimode_draw_arrays", o(IBM_multimode_draw_arrays), GL }, { "GL_IBM_rasterpos_clip", o(IBM_rasterpos_clip), GL }, { "GL_IBM_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat), GL }, { "GL_INGR_blend_func_separate", o(EXT_blend_func_separate), GL }, { "GL_MESA_pack_invert", o(MESA_pack_invert), GL }, { "GL_MESA_resize_buffers", o(MESA_resize_buffers), GL }, { "GL_MESA_texture_array", o(MESA_texture_array), GL }, { "GL_MESA_texture_signed_rgba", o(MESA_texture_signed_rgba), GL }, { "GL_MESA_window_pos", o(ARB_window_pos), GL }, { "GL_MESAX_texture_float", o(ARB_texture_float), GL }, { "GL_MESA_ycbcr_texture", o(MESA_ycbcr_texture), GL }, { "GL_NV_blend_square", o(NV_blend_square), GL }, { "GL_NV_conditional_render", o(NV_conditional_render), GL }, { "GL_NV_depth_clamp", o(ARB_depth_clamp), GL }, { "GL_NV_fragment_program", o(NV_fragment_program), GL }, { "GL_NV_fragment_program_option", o(NV_fragment_program_option), GL }, { "GL_NV_light_max_exponent", o(NV_light_max_exponent), GL }, { "GL_NV_packed_depth_stencil", o(EXT_packed_depth_stencil), GL }, { "GL_NV_point_sprite", o(NV_point_sprite), GL }, { "GL_NV_primitive_restart", o(NV_primitive_restart), GL }, { "GL_NV_texgen_reflection", o(NV_texgen_reflection), GL }, { "GL_NV_texture_env_combine4", o(NV_texture_env_combine4), GL }, { "GL_NV_texture_rectangle", o(NV_texture_rectangle), GL }, { "GL_NV_vertex_program1_1", o(NV_vertex_program1_1), GL }, { "GL_NV_vertex_program", o(NV_vertex_program), GL }, { "GL_S3_s3tc", o(S3_s3tc), GL }, { "GL_SGIS_generate_mipmap", o(SGIS_generate_mipmap), GL }, { "GL_SGIS_texture_border_clamp", o(ARB_texture_border_clamp), GL }, { "GL_SGIS_texture_edge_clamp", o(SGIS_texture_edge_clamp), GL }, { "GL_SGIS_texture_lod", o(SGIS_texture_lod), GL }, { "GL_SGI_texture_color_table", o(SGI_texture_color_table), GL }, { "GL_SUN_multi_draw_arrays", o(EXT_multi_draw_arrays), GL }, { 0, 0, 0 }, }; /** * Given an extension name, lookup up the corresponding member of struct * gl_extensions and return that member's offset (in bytes). If the name is * not found in the \c extension_table, return 0. * * \param name Name of extension. * \return Offset of member in struct gl_extensions. */ static size_t name_to_offset(const char* name) { if (name == 0) return 0; for (const struct extension *i = extension_table; i->name != 0; ++i) { if (strcmp(name, i->name) == 0) return i->offset; } return 0; } /** * \brief Extensions enabled by default. * * These extensions are enabled by _mesa_init_extensions(). * * XXX: Should these defaults also apply to GLES? */ static const size_t default_extensions[] = { o(ARB_copy_buffer), o(ARB_draw_buffers), o(ARB_multisample), o(ARB_texture_compression), o(ARB_transpose_matrix), o(ARB_vertex_buffer_object), o(ARB_window_pos), o(EXT_abgr), o(EXT_bgra), o(EXT_compiled_vertex_array), o(EXT_copy_texture), o(EXT_draw_range_elements), o(EXT_multi_draw_arrays), o(EXT_packed_pixels), o(EXT_polygon_offset), o(EXT_rescale_normal), o(EXT_separate_specular_color), o(EXT_subtexture), o(EXT_texture), o(EXT_texture3D), o(EXT_texture_object), o(EXT_vertex_array), o(OES_read_format), /* Vendor Extensions */ o(APPLE_packed_pixels), o(IBM_multimode_draw_arrays), o(IBM_rasterpos_clip), o(NV_light_max_exponent), o(NV_texgen_reflection), o(SGIS_generate_mipmap), o(SGIS_texture_edge_clamp), o(SGIS_texture_lod), 0, }; /** * Enable all extensions suitable for a software-only renderer. * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc. */ void _mesa_enable_sw_extensions(struct gl_context *ctx) { /*ctx->Extensions.ARB_copy_buffer = GL_TRUE;*/ ctx->Extensions.ARB_depth_clamp = GL_TRUE; ctx->Extensions.ARB_depth_texture = GL_TRUE; /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/ ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE; ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE; ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE; #if FEATURE_ARB_fragment_program ctx->Extensions.ARB_fragment_program = GL_TRUE; ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE; #endif #if FEATURE_ARB_fragment_shader ctx->Extensions.ARB_fragment_shader = GL_TRUE; #endif #if FEATURE_ARB_framebuffer_object ctx->Extensions.ARB_framebuffer_object = GL_TRUE; #endif #if FEATURE_ARB_geometry_shader4 && 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */ ctx->Extensions.ARB_geometry_shader4 = GL_TRUE; #endif ctx->Extensions.ARB_half_float_pixel = GL_TRUE; ctx->Extensions.ARB_half_float_vertex = GL_TRUE; ctx->Extensions.ARB_map_buffer_range = GL_TRUE; ctx->Extensions.ARB_multitexture = GL_TRUE; #if FEATURE_queryobj ctx->Extensions.ARB_occlusion_query = GL_TRUE; ctx->Extensions.ARB_occlusion_query2 = GL_TRUE; #endif ctx->Extensions.ARB_point_sprite = GL_TRUE; #if FEATURE_ARB_shader_objects ctx->Extensions.ARB_shader_objects = GL_TRUE; ctx->Extensions.EXT_separate_shader_objects = GL_TRUE; #endif #if FEATURE_ARB_shading_language_100 ctx->Extensions.ARB_shading_language_100 = GL_TRUE; #endif ctx->Extensions.ARB_shadow = GL_TRUE; ctx->Extensions.ARB_shadow_ambient = GL_TRUE; ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; ctx->Extensions.ARB_texture_cube_map = GL_TRUE; ctx->Extensions.ARB_texture_env_combine = GL_TRUE; ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE; ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE; /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/ ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE; ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE; ctx->Extensions.ARB_texture_rg = GL_TRUE; ctx->Extensions.ARB_vertex_array_object = GL_TRUE; #if FEATURE_ARB_vertex_program ctx->Extensions.ARB_vertex_program = GL_TRUE; #endif #if FEATURE_ARB_vertex_shader ctx->Extensions.ARB_vertex_shader = GL_TRUE; #endif #if FEATURE_ARB_vertex_buffer_object /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/ #endif #if FEATURE_ARB_sync ctx->Extensions.ARB_sync = GL_TRUE; #endif ctx->Extensions.APPLE_vertex_array_object = GL_TRUE; #if FEATURE_APPLE_object_purgeable ctx->Extensions.APPLE_object_purgeable = GL_TRUE; #endif ctx->Extensions.ATI_envmap_bumpmap = GL_TRUE; #if FEATURE_ATI_fragment_shader ctx->Extensions.ATI_fragment_shader = GL_TRUE; #endif ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE; ctx->Extensions.ATI_texture_mirror_once = GL_TRUE; ctx->Extensions.ATI_separate_stencil = GL_TRUE; ctx->Extensions.EXT_blend_color = GL_TRUE; ctx->Extensions.EXT_blend_equation_separate = GL_TRUE; ctx->Extensions.EXT_blend_func_separate = GL_TRUE; ctx->Extensions.EXT_blend_logic_op = GL_TRUE; ctx->Extensions.EXT_blend_minmax = GL_TRUE; ctx->Extensions.EXT_blend_subtract = GL_TRUE; ctx->Extensions.EXT_depth_bounds_test = GL_TRUE; ctx->Extensions.EXT_draw_buffers2 = GL_TRUE; ctx->Extensions.EXT_fog_coord = GL_TRUE; #if FEATURE_EXT_framebuffer_object ctx->Extensions.EXT_framebuffer_object = GL_TRUE; #endif #if FEATURE_EXT_framebuffer_blit ctx->Extensions.EXT_framebuffer_blit = GL_TRUE; #endif #if FEATURE_ARB_framebuffer_object ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE; #endif /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/ ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE; ctx->Extensions.EXT_paletted_texture = GL_TRUE; #if FEATURE_EXT_pixel_buffer_object ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE; #endif ctx->Extensions.EXT_point_parameters = GL_TRUE; ctx->Extensions.EXT_provoking_vertex = GL_TRUE; ctx->Extensions.EXT_shadow_funcs = GL_TRUE; ctx->Extensions.EXT_secondary_color = GL_TRUE; ctx->Extensions.EXT_shared_texture_palette = GL_TRUE; ctx->Extensions.EXT_stencil_wrap = GL_TRUE; ctx->Extensions.EXT_stencil_two_side = GL_TRUE; ctx->Extensions.EXT_texture_array = GL_TRUE; ctx->Extensions.EXT_texture_env_add = GL_TRUE; ctx->Extensions.EXT_texture_env_combine = GL_TRUE; ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE; ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE; ctx->Extensions.EXT_texture_lod_bias = GL_TRUE; #if FEATURE_EXT_texture_sRGB ctx->Extensions.EXT_texture_sRGB = GL_TRUE; #endif ctx->Extensions.EXT_texture_swizzle = GL_TRUE; #if FEATURE_EXT_transform_feedback /*ctx->Extensions.EXT_transform_feedback = GL_TRUE;*/ #endif ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE; /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/ ctx->Extensions.MESA_pack_invert = GL_TRUE; ctx->Extensions.MESA_resize_buffers = GL_TRUE; ctx->Extensions.MESA_texture_array = GL_TRUE; ctx->Extensions.MESA_ycbcr_texture = GL_TRUE; ctx->Extensions.NV_blend_square = GL_TRUE; ctx->Extensions.NV_conditional_render = GL_TRUE; /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/ ctx->Extensions.NV_point_sprite = GL_TRUE; ctx->Extensions.NV_texture_env_combine4 = GL_TRUE; ctx->Extensions.NV_texture_rectangle = GL_TRUE; /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/ #if FEATURE_NV_vertex_program ctx->Extensions.NV_vertex_program = GL_TRUE; ctx->Extensions.NV_vertex_program1_1 = GL_TRUE; #endif #if FEATURE_NV_fragment_program ctx->Extensions.NV_fragment_program = GL_TRUE; #endif #if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program ctx->Extensions.NV_fragment_program_option = GL_TRUE; #endif ctx->Extensions.SGI_texture_color_table = GL_TRUE; /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/ ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE; #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE; #endif #if FEATURE_texture_fxt1 _mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1"); #endif #if FEATURE_texture_s3tc if (ctx->Mesa_DXTn) { _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc"); _mesa_enable_extension(ctx, "GL_S3_s3tc"); } #endif } /** * Enable common EXT extensions in the ARB_imaging subset. */ void _mesa_enable_imaging_extensions(struct gl_context *ctx) { ctx->Extensions.EXT_blend_color = GL_TRUE; ctx->Extensions.EXT_blend_logic_op = GL_TRUE; ctx->Extensions.EXT_blend_minmax = GL_TRUE; ctx->Extensions.EXT_blend_subtract = GL_TRUE; } /** * Enable all OpenGL 1.3 features and extensions. * A convenience function to be called by drivers. */ void _mesa_enable_1_3_extensions(struct gl_context *ctx) { /*ctx->Extensions.ARB_multisample = GL_TRUE;*/ ctx->Extensions.ARB_multitexture = GL_TRUE; ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/ ctx->Extensions.ARB_texture_cube_map = GL_TRUE; ctx->Extensions.ARB_texture_env_combine = GL_TRUE; ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE; ctx->Extensions.EXT_texture_env_add = GL_TRUE; /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/ } /** * Enable all OpenGL 1.4 features and extensions. * A convenience function to be called by drivers. */ void _mesa_enable_1_4_extensions(struct gl_context *ctx) { ctx->Extensions.ARB_depth_texture = GL_TRUE; ctx->Extensions.ARB_shadow = GL_TRUE; ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE; ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE; ctx->Extensions.ARB_window_pos = GL_TRUE; ctx->Extensions.EXT_blend_color = GL_TRUE; ctx->Extensions.EXT_blend_func_separate = GL_TRUE; ctx->Extensions.EXT_blend_minmax = GL_TRUE; ctx->Extensions.EXT_blend_subtract = GL_TRUE; ctx->Extensions.EXT_fog_coord = GL_TRUE; /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/ ctx->Extensions.EXT_point_parameters = GL_TRUE; ctx->Extensions.EXT_secondary_color = GL_TRUE; ctx->Extensions.EXT_stencil_wrap = GL_TRUE; ctx->Extensions.EXT_texture_lod_bias = GL_TRUE; /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/ } /** * Enable all OpenGL 1.5 features and extensions. * A convenience function to be called by drivers. */ void _mesa_enable_1_5_extensions(struct gl_context *ctx) { ctx->Extensions.ARB_occlusion_query = GL_TRUE; /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/ ctx->Extensions.EXT_shadow_funcs = GL_TRUE; } /** * Enable all OpenGL 2.0 features and extensions. * A convenience function to be called by drivers. */ void _mesa_enable_2_0_extensions(struct gl_context *ctx) { /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/ #if FEATURE_ARB_fragment_shader ctx->Extensions.ARB_fragment_shader = GL_TRUE; #endif ctx->Extensions.ARB_point_sprite = GL_TRUE; ctx->Extensions.EXT_blend_equation_separate = GL_TRUE; ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE; #if FEATURE_ARB_shader_objects ctx->Extensions.ARB_shader_objects = GL_TRUE; #endif #if FEATURE_ARB_shading_language_100 ctx->Extensions.ARB_shading_language_100 = GL_TRUE; #endif ctx->Extensions.EXT_stencil_two_side = GL_TRUE; #if FEATURE_ARB_vertex_shader ctx->Extensions.ARB_vertex_shader = GL_TRUE; #endif } /** * Enable all OpenGL 2.1 features and extensions. * A convenience function to be called by drivers. */ void _mesa_enable_2_1_extensions(struct gl_context *ctx) { #if FEATURE_EXT_pixel_buffer_object ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE; #endif #if FEATURE_EXT_texture_sRGB ctx->Extensions.EXT_texture_sRGB = GL_TRUE; #endif } /** * Either enable or disable the named extension. * \return GL_TRUE for success, GL_FALSE if invalid extension name */ static GLboolean set_extension( struct gl_context *ctx, const char *name, GLboolean state ) { if (ctx->Extensions.String) { /* The string was already queried - can't change it now! */ _mesa_problem(ctx, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name); return GL_FALSE; } size_t offset = name_to_offset(name); if (offset == 0) { _mesa_problem(ctx, "Trying to enable/disable unknown extension %s", name); return GL_FALSE; } else if (offset == o(dummy_true) && state == GL_FALSE) { _mesa_problem(ctx, "Trying to disable a permanently enabled extension: " "%s", name); return GL_FALSE; } else { GLboolean *base = (GLboolean *) &ctx->Extensions; base[offset] = state; return GL_TRUE; } } /** * Enable the named extension. * Typically called by drivers. */ void _mesa_enable_extension( struct gl_context *ctx, const char *name ) { if (!set_extension(ctx, name, GL_TRUE)) _mesa_problem(ctx, "Trying to enable unknown extension: %s", name); } /** * Disable the named extension. * XXX is this really needed??? */ void _mesa_disable_extension( struct gl_context *ctx, const char *name ) { if (!set_extension(ctx, name, GL_FALSE)) _mesa_problem(ctx, "Trying to disable unknown extension: %s", name); } /** * Test if the named extension is enabled in this context. */ GLboolean _mesa_extension_is_enabled( struct gl_context *ctx, const char *name ) { if (name == 0) return GL_FALSE; size_t offset = name_to_offset(name); if (offset == 0) return GL_FALSE; GLboolean *base = (GLboolean *) &ctx->Extensions; return base[offset]; } /** * Append string 'b' onto string 'a'. Free 'a' and return new string. */ static char * append(const char *a, const char *b) { const GLuint aLen = a ? strlen(a) : 0; const GLuint bLen = b ? strlen(b) : 0; char *s = calloc(1, aLen + bLen + 1); if (s) { if (a) memcpy(s, a, aLen); if (b) memcpy(s + aLen, b, bLen); s[aLen + bLen] = '\0'; } if (a) free((void *) a); return s; } /** * Check the MESA_EXTENSION_OVERRIDE env var. * For extension names that are recognized, turn them on. For extension * names that are recognized and prefixed with '-', turn them off. * Return a string of the unknown/leftover names. * * Returnd string needs to be freed. */ static char * get_extension_override( struct gl_context *ctx ) { const char *envExt = _mesa_getenv("MESA_EXTENSION_OVERRIDE"); char *extraExt = NULL; char ext[1000]; GLuint extLen = 0; GLuint i; GLboolean disableExt = GL_FALSE; if (!envExt) return NULL; for (i = 0; ; i++) { if (envExt[i] == '\0' || envExt[i] == ' ') { /* terminate/process 'ext' if extLen > 0 */ if (extLen > 0) { assert(extLen < sizeof(ext)); /* enable extension named by 'ext' */ ext[extLen] = 0; if (!set_extension(ctx, ext, !disableExt)) { /* unknown extension name, append it to extraExt */ if (extraExt) { extraExt = append(extraExt, " "); } extraExt = append(extraExt, ext); } extLen = 0; disableExt = GL_FALSE; } if (envExt[i] == '\0') break; } else if (envExt[i] == '-') { disableExt = GL_TRUE; } else { /* accumulate this non-space character */ ext[extLen++] = envExt[i]; } } return extraExt; } /** * \brief Initialize extension tables and enable default extensions. * * This should be called during context initialization. * Note: Sets gl_extensions.dummy_true to true. */ void _mesa_init_extensions( struct gl_context *ctx ) { GLboolean *base = (GLboolean *) &ctx->Extensions; GLboolean *sentinel = base + o(extension_sentinel); /* First, turn all extensions off. */ for (GLboolean *i = base; i != sentinel; ++i) *i = GL_FALSE; /* Then, selectively turn default extensions on. */ ctx->Extensions.dummy_true = GL_TRUE; for (const size_t *i = default_extensions; *i != 0; ++i) base[*i] = GL_TRUE; } /** * Construct the GL_EXTENSIONS string. Called the first time that * glGetString(GL_EXTENSIONS) is called. */ GLubyte* _mesa_make_extension_string(struct gl_context *ctx) { /* The extension string. */ char *exts = 0; /* Length of extension string. */ size_t length = 0; /* String of extra extensions. */ char *extra_extensions = get_extension_override(ctx); GLboolean *base = (GLboolean *) &ctx->Extensions; /* Compute length of the extension string. */ for (const struct extension *i = extension_table; i->name != 0; ++i) { if (base[i->offset] && (i->api_set & (1 << ctx->API))) { length += strlen(i->name) + 1; /* +1 for space */ } } if (extra_extensions != NULL) length += 1 + strlen(extra_extensions); /* +1 for space */ exts = (char *) calloc(length + 1, sizeof(char)); if (exts == NULL) { free(extra_extensions); return NULL; } /* Build the extension string.*/ for (const struct extension *i = extension_table; i->name != 0; ++i) { if (base[i->offset] && (i->api_set & (1 << ctx->API))) { strcat(exts, i->name); strcat(exts, " "); } } if (extra_extensions != 0) { strcat(exts, extra_extensions); free(extra_extensions); } return (GLubyte *) exts; } /** * Return number of enabled extensions. */ GLuint _mesa_get_extension_count(struct gl_context *ctx) { /* only count once */ if (ctx->Extensions.Count != 0) return ctx->Extensions.Count; GLboolean *base = (GLboolean *) &ctx->Extensions; for (const struct extension *i = extension_table; i->name != 0; ++i) { if (base[i->offset]) { ctx->Extensions.Count++; } } return ctx->Extensions.Count; } /** * Return name of i-th enabled extension */ const GLubyte * _mesa_get_enabled_extension(struct gl_context *ctx, GLuint index) { if (index < 0) return NULL; const GLboolean *base = (GLboolean*) &ctx->Extensions; size_t n = 0; for (const struct extension *i = extension_table; i->name != 0; ++i) { if (n == index && base[i->offset]) { return (GLubyte*) i->name; } else if (base[i->offset]) { ++n; } } return NULL; }