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cc07149276cc9ca310d41493f163978b4faad46b
third_party_mesa3d/src/mesa/main/extensions.c
Marek Olšák cc07149276 mesa: remove IBM_rasterpos_clip extension enable flag 
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2012-10-31 02:04:54 +01:00

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/*
* 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"
#define ALIGN(value, alignment) (((value) + alignment - 1) & ~(alignment - 1))
enum {
DISABLE = 0,
GLL = 1 << API_OPENGL, /* GL Legacy / Compatibility */
GLC = 1 << API_OPENGL_CORE, /* GL Core */
GL = (1 << API_OPENGL) | (1 << API_OPENGL_CORE),
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;
/** Year the extension was proposed or approved. Used to sort the
* extension string chronologically. */
uint16_t year;
};
/**
* 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.
*/
static const struct extension extension_table[] = {
/* ARB Extensions */
{ "GL_ARB_ES2_compatibility", o(ARB_ES2_compatibility), GL, 2009 },
{ "GL_ARB_base_instance", o(ARB_base_instance), GL, 2011 },
{ "GL_ARB_blend_func_extended", o(ARB_blend_func_extended), GL, 2009 },
{ "GL_ARB_color_buffer_float", o(ARB_color_buffer_float), GL, 2004 },
{ "GL_ARB_copy_buffer", o(dummy_true), GL, 2008 },
{ "GL_ARB_conservative_depth", o(ARB_conservative_depth), GL, 2011 },
{ "GL_ARB_debug_output", o(dummy_true), GL, 2009 },
{ "GL_ARB_depth_buffer_float", o(ARB_depth_buffer_float), GL, 2008 },
{ "GL_ARB_depth_clamp", o(ARB_depth_clamp), GL, 2003 },
{ "GL_ARB_depth_texture", o(ARB_depth_texture), GLL, 2001 },
{ "GL_ARB_draw_buffers", o(dummy_true), GL, 2002 },
{ "GL_ARB_draw_buffers_blend", o(ARB_draw_buffers_blend), GL, 2009 },
{ "GL_ARB_draw_elements_base_vertex", o(ARB_draw_elements_base_vertex), GL, 2009 },
{ "GL_ARB_draw_instanced", o(ARB_draw_instanced), GL, 2008 },
{ "GL_ARB_explicit_attrib_location", o(ARB_explicit_attrib_location), GL, 2009 },
{ "GL_ARB_fragment_coord_conventions", o(ARB_fragment_coord_conventions), GL, 2009 },
{ "GL_ARB_fragment_program", o(ARB_fragment_program), GLL, 2002 },
{ "GL_ARB_fragment_program_shadow", o(ARB_fragment_program_shadow), GLL, 2003 },
{ "GL_ARB_fragment_shader", o(ARB_fragment_shader), GL, 2002 },
{ "GL_ARB_framebuffer_object", o(ARB_framebuffer_object), GL, 2005 },
{ "GL_ARB_framebuffer_sRGB", o(EXT_framebuffer_sRGB), GL, 1998 },
{ "GL_ARB_half_float_pixel", o(ARB_half_float_pixel), GL, 2003 },
{ "GL_ARB_half_float_vertex", o(ARB_half_float_vertex), GL, 2008 },
{ "GL_ARB_instanced_arrays", o(ARB_instanced_arrays), GL, 2008 },
{ "GL_ARB_invalidate_subdata", o(dummy_true), GL, 2012 },
{ "GL_ARB_map_buffer_alignment", o(ARB_map_buffer_alignment), GL, 2011 },
{ "GL_ARB_map_buffer_range", o(ARB_map_buffer_range), GL, 2008 },
{ "GL_ARB_multisample", o(dummy_true), GLL, 1994 },
{ "GL_ARB_multitexture", o(dummy_true), GLL, 1998 },
{ "GL_ARB_occlusion_query2", o(ARB_occlusion_query2), GL, 2003 },
{ "GL_ARB_occlusion_query", o(ARB_occlusion_query), GLL, 2001 },
{ "GL_ARB_pixel_buffer_object", o(EXT_pixel_buffer_object), GL, 2004 },
{ "GL_ARB_point_parameters", o(EXT_point_parameters), GLL, 1997 },
{ "GL_ARB_point_sprite", o(ARB_point_sprite), GL, 2003 },
{ "GL_ARB_provoking_vertex", o(EXT_provoking_vertex), GL, 2009 },
{ "GL_ARB_robustness", o(dummy_true), GL, 2010 },
{ "GL_ARB_sampler_objects", o(dummy_true), GL, 2009 },
{ "GL_ARB_seamless_cube_map", o(ARB_seamless_cube_map), GL, 2009 },
{ "GL_ARB_shader_bit_encoding", o(ARB_shader_bit_encoding), GL, 2010 },
{ "GL_ARB_shader_objects", o(ARB_shader_objects), GL, 2002 },
{ "GL_ARB_shader_stencil_export", o(ARB_shader_stencil_export), GL, 2009 },
{ "GL_ARB_shader_texture_lod", o(ARB_shader_texture_lod), GL, 2009 },
{ "GL_ARB_shading_language_100", o(ARB_shading_language_100), GLL, 2003 },
{ "GL_ARB_shadow", o(ARB_shadow), GLL, 2001 },
{ "GL_ARB_sync", o(ARB_sync), GL, 2003 },
{ "GL_ARB_texture_border_clamp", o(ARB_texture_border_clamp), GLL, 2000 },
{ "GL_ARB_texture_buffer_object", o(ARB_texture_buffer_object), GL, 2008 },
{ "GL_ARB_texture_compression", o(dummy_true), GLL, 2000 },
{ "GL_ARB_texture_compression_rgtc", o(ARB_texture_compression_rgtc), GL, 2004 },
{ "GL_ARB_texture_cube_map", o(ARB_texture_cube_map), GLL, 1999 },
{ "GL_ARB_texture_env_add", o(dummy_true), GLL, 1999 },
{ "GL_ARB_texture_env_combine", o(ARB_texture_env_combine), GLL, 2001 },
{ "GL_ARB_texture_env_crossbar", o(ARB_texture_env_crossbar), GLL, 2001 },
{ "GL_ARB_texture_env_dot3", o(ARB_texture_env_dot3), GLL, 2001 },
{ "GL_ARB_texture_float", o(ARB_texture_float), GL, 2004 },
{ "GL_ARB_texture_mirrored_repeat", o(dummy_true), GLL, 2001 },
{ "GL_ARB_texture_multisample", o(ARB_texture_multisample), GL, 2009 },
{ "GL_ARB_texture_non_power_of_two", o(ARB_texture_non_power_of_two), GL, 2003 },
{ "GL_ARB_texture_rectangle", o(NV_texture_rectangle), GL, 2004 },
{ "GL_ARB_texture_rgb10_a2ui", o(ARB_texture_rgb10_a2ui), GL, 2009 },
{ "GL_ARB_texture_rg", o(ARB_texture_rg), GL, 2008 },
{ "GL_ARB_texture_storage", o(ARB_texture_storage), GL, 2011 },
{ "GL_ARB_texture_swizzle", o(EXT_texture_swizzle), GL, 2008 },
{ "GL_ARB_timer_query", o(ARB_timer_query), GL, 2010 },
{ "GL_ARB_transform_feedback2", o(ARB_transform_feedback2), GL, 2010 },
{ "GL_ARB_transform_feedback3", o(ARB_transform_feedback3), GL, 2010 },
{ "GL_ARB_transform_feedback_instanced", o(ARB_transform_feedback_instanced), GL, 2011 },
{ "GL_ARB_transpose_matrix", o(dummy_true), GLL, 1999 },
{ "GL_ARB_uniform_buffer_object", o(ARB_uniform_buffer_object), GL, 2009 },
{ "GL_ARB_vertex_array_bgra", o(EXT_vertex_array_bgra), GL, 2008 },
{ "GL_ARB_vertex_array_object", o(dummy_true), GL, 2006 },
{ "GL_ARB_vertex_buffer_object", o(dummy_true), GLL, 2003 },
{ "GL_ARB_vertex_program", o(ARB_vertex_program), GLL, 2002 },
{ "GL_ARB_vertex_shader", o(ARB_vertex_shader), GL, 2002 },
{ "GL_ARB_vertex_type_2_10_10_10_rev", o(ARB_vertex_type_2_10_10_10_rev), GL, 2009 },
{ "GL_ARB_window_pos", o(dummy_true), GLL, 2001 },
/* EXT extensions */
{ "GL_EXT_abgr", o(dummy_true), GL, 1995 },
{ "GL_EXT_bgra", o(dummy_true), GLL, 1995 },
{ "GL_EXT_blend_color", o(EXT_blend_color), GLL, 1995 },
{ "GL_EXT_blend_equation_separate", o(EXT_blend_equation_separate), GL, 2003 },
{ "GL_EXT_blend_func_separate", o(EXT_blend_func_separate), GLL, 1999 },
{ "GL_EXT_blend_minmax", o(EXT_blend_minmax), GLL | ES1 | ES2, 1995 },
{ "GL_EXT_blend_subtract", o(dummy_true), GLL, 1995 },
{ "GL_EXT_clip_volume_hint", o(EXT_clip_volume_hint), GL, 1996 },
{ "GL_EXT_compiled_vertex_array", o(dummy_true), GLL, 1996 },
{ "GL_EXT_copy_texture", o(dummy_true), GLL, 1995 },
{ "GL_EXT_depth_bounds_test", o(EXT_depth_bounds_test), GL, 2002 },
{ "GL_EXT_draw_buffers2", o(EXT_draw_buffers2), GL, 2006 },
{ "GL_EXT_draw_instanced", o(ARB_draw_instanced), GL, 2006 },
{ "GL_EXT_draw_range_elements", o(dummy_true), GLL, 1997 },
{ "GL_EXT_fog_coord", o(EXT_fog_coord), GLL, 1999 },
{ "GL_EXT_framebuffer_blit", o(EXT_framebuffer_blit), GL, 2005 },
{ "GL_EXT_framebuffer_multisample", o(EXT_framebuffer_multisample), GL, 2005 },
{ "GL_EXT_framebuffer_object", o(EXT_framebuffer_object), GL, 2000 },
{ "GL_EXT_framebuffer_sRGB", o(EXT_framebuffer_sRGB), GL, 1998 },
{ "GL_EXT_gpu_program_parameters", o(EXT_gpu_program_parameters), GLL, 2006 },
{ "GL_EXT_gpu_shader4", o(EXT_gpu_shader4), GL, 2006 },
{ "GL_EXT_map_buffer_range", o(ARB_map_buffer_range), ES1 | ES2, 2012 },
{ "GL_EXT_multi_draw_arrays", o(dummy_true), GLL | ES1 | ES2, 1999 },
{ "GL_EXT_packed_depth_stencil", o(EXT_packed_depth_stencil), GL, 2005 },
{ "GL_EXT_packed_float", o(EXT_packed_float), GL, 2004 },
{ "GL_EXT_packed_pixels", o(dummy_true), GLL, 1997 },
{ "GL_EXT_pixel_buffer_object", o(EXT_pixel_buffer_object), GL, 2004 },
{ "GL_EXT_point_parameters", o(EXT_point_parameters), GLL, 1997 },
{ "GL_EXT_polygon_offset", o(dummy_true), GLL, 1995 },
{ "GL_EXT_provoking_vertex", o(EXT_provoking_vertex), GL, 2009 },
{ "GL_EXT_rescale_normal", o(dummy_true), GLL, 1997 },
{ "GL_EXT_secondary_color", o(EXT_secondary_color), GLL, 1999 },
{ "GL_EXT_separate_shader_objects", o(EXT_separate_shader_objects), GLL, 2008 },
{ "GL_EXT_separate_specular_color", o(dummy_true), GLL, 1997 },
{ "GL_EXT_shadow_funcs", o(EXT_shadow_funcs), GLL, 2002 },
{ "GL_EXT_stencil_two_side", o(EXT_stencil_two_side), GLL, 2001 },
{ "GL_EXT_stencil_wrap", o(dummy_true), GLL, 2002 },
{ "GL_EXT_subtexture", o(dummy_true), GLL, 1995 },
{ "GL_EXT_texture3D", o(EXT_texture3D), GLL, 1996 },
{ "GL_EXT_texture_array", o(EXT_texture_array), GL, 2006 },
{ "GL_EXT_texture_compression_dxt1", o(EXT_texture_compression_s3tc), GL | ES1 | ES2, 2004 },
{ "GL_ANGLE_texture_compression_dxt3", o(ANGLE_texture_compression_dxt), ES2, 2011 },
{ "GL_ANGLE_texture_compression_dxt5", o(ANGLE_texture_compression_dxt), ES2, 2011 },
{ "GL_EXT_texture_compression_latc", o(EXT_texture_compression_latc), GL, 2006 },
{ "GL_EXT_texture_compression_rgtc", o(ARB_texture_compression_rgtc), GL, 2004 },
{ "GL_EXT_texture_compression_s3tc", o(EXT_texture_compression_s3tc), GL, 2000 },
{ "GL_EXT_texture_cube_map", o(ARB_texture_cube_map), GLL, 2001 },
{ "GL_EXT_texture_edge_clamp", o(dummy_true), GLL, 1997 },
{ "GL_EXT_texture_env_add", o(dummy_true), GLL, 1999 },
{ "GL_EXT_texture_env_combine", o(dummy_true), GLL, 2000 },
{ "GL_EXT_texture_env_dot3", o(EXT_texture_env_dot3), GLL, 2000 },
{ "GL_EXT_texture_filter_anisotropic", o(EXT_texture_filter_anisotropic), GL | ES1 | ES2, 1999 },
{ "GL_EXT_texture_format_BGRA8888", o(dummy_true), ES1 | ES2, 2005 },
{ "GL_EXT_texture_rg", o(ARB_texture_rg), ES2, 2011 },
{ "GL_EXT_read_format_bgra", o(dummy_true), ES1 | ES2, 2009 },
{ "GL_EXT_texture_integer", o(EXT_texture_integer), GL, 2006 },
{ "GL_EXT_texture_lod_bias", o(dummy_true), GLL | ES1, 1999 },
{ "GL_EXT_texture_mirror_clamp", o(EXT_texture_mirror_clamp), GL, 2004 },
{ "GL_EXT_texture_object", o(dummy_true), GLL, 1995 },
{ "GL_EXT_texture", o(dummy_true), GLL, 1996 },
{ "GL_EXT_texture_rectangle", o(NV_texture_rectangle), GLL, 2004 },
{ "GL_EXT_texture_shared_exponent", o(EXT_texture_shared_exponent), GL, 2004 },
{ "GL_EXT_texture_snorm", o(EXT_texture_snorm), GL, 2009 },
{ "GL_EXT_texture_sRGB", o(EXT_texture_sRGB), GL, 2004 },
{ "GL_EXT_texture_sRGB_decode", o(EXT_texture_sRGB_decode), GL, 2006 },
{ "GL_EXT_texture_swizzle", o(EXT_texture_swizzle), GL, 2008 },
{ "GL_EXT_texture_type_2_10_10_10_REV", o(dummy_true), ES2, 2008 },
{ "GL_EXT_timer_query", o(EXT_timer_query), GL, 2006 },
{ "GL_EXT_transform_feedback", o(EXT_transform_feedback), GL, 2011 },
{ "GL_EXT_unpack_subimage", o(dummy_true), ES2, 2011 },
{ "GL_EXT_vertex_array_bgra", o(EXT_vertex_array_bgra), GL, 2008 },
{ "GL_EXT_vertex_array", o(dummy_true), GLL, 1995 },
/* OES extensions */
{ "GL_OES_blend_equation_separate", o(EXT_blend_equation_separate), ES1, 2009 },
{ "GL_OES_blend_func_separate", o(EXT_blend_func_separate), ES1, 2009 },
{ "GL_OES_blend_subtract", o(dummy_true), ES1, 2009 },
{ "GL_OES_byte_coordinates", o(dummy_true), ES1, 2002 },
{ "GL_OES_compressed_ETC1_RGB8_texture", o(OES_compressed_ETC1_RGB8_texture), ES1 | ES2, 2005 },
{ "GL_OES_compressed_paletted_texture", o(dummy_true), ES1, 2003 },
{ "GL_OES_depth24", o(EXT_framebuffer_object), ES1 | ES2, 2005 },
{ "GL_OES_depth32", o(dummy_false), DISABLE, 2005 },
{ "GL_OES_depth_texture", o(ARB_depth_texture), ES2, 2006 },
{ "GL_OES_draw_texture", o(OES_draw_texture), ES1, 2004 },
/* FIXME: Mesa expects GL_OES_EGL_image to be available in OpenGL contexts. */
{ "GL_OES_EGL_image", o(OES_EGL_image), GL | ES1 | ES2, 2006 },
{ "GL_OES_EGL_image_external", o(OES_EGL_image_external), ES1 | ES2, 2010 },
{ "GL_OES_element_index_uint", o(dummy_true), ES1 | ES2, 2005 },
{ "GL_OES_fbo_render_mipmap", o(EXT_framebuffer_object), ES1 | ES2, 2005 },
{ "GL_OES_fixed_point", o(dummy_true), ES1, 2002 },
{ "GL_OES_framebuffer_object", o(EXT_framebuffer_object), ES1, 2005 },
{ "GL_OES_mapbuffer", o(dummy_true), ES1 | ES2, 2005 },
{ "GL_OES_matrix_get", o(dummy_true), ES1, 2004 },
{ "GL_OES_packed_depth_stencil", o(EXT_packed_depth_stencil), ES1 | ES2, 2007 },
{ "GL_OES_point_size_array", o(dummy_true), ES1, 2004 },
{ "GL_OES_point_sprite", o(ARB_point_sprite), ES1, 2004 },
{ "GL_OES_query_matrix", o(dummy_true), ES1, 2003 },
{ "GL_OES_read_format", o(dummy_true), GL | ES1, 2003 },
{ "GL_OES_rgb8_rgba8", o(EXT_framebuffer_object), ES1 | ES2, 2005 },
{ "GL_OES_single_precision", o(dummy_true), ES1, 2003 },
{ "GL_OES_standard_derivatives", o(OES_standard_derivatives), ES2, 2005 },
{ "GL_OES_stencil1", o(dummy_false), DISABLE, 2005 },
{ "GL_OES_stencil4", o(dummy_false), DISABLE, 2005 },
{ "GL_OES_stencil8", o(EXT_framebuffer_object), ES1 | ES2, 2005 },
{ "GL_OES_stencil_wrap", o(dummy_true), ES1, 2002 },
{ "GL_OES_texture_3D", o(EXT_texture3D), ES2, 2005 },
{ "GL_OES_texture_cube_map", o(ARB_texture_cube_map), ES1, 2007 },
{ "GL_OES_texture_env_crossbar", o(ARB_texture_env_crossbar), ES1, 2005 },
{ "GL_OES_texture_mirrored_repeat", o(dummy_true), ES1, 2005 },
{ "GL_OES_texture_npot", o(ARB_texture_non_power_of_two), ES2, 2005 },
{ "GL_OES_vertex_array_object", o(dummy_true), ES1 | ES2, 2010 },
/* Vendor extensions */
{ "GL_3DFX_texture_compression_FXT1", o(TDFX_texture_compression_FXT1), GL, 1999 },
{ "GL_AMD_conservative_depth", o(ARB_conservative_depth), GL, 2009 },
{ "GL_AMD_draw_buffers_blend", o(ARB_draw_buffers_blend), GL, 2009 },
{ "GL_AMD_seamless_cubemap_per_texture", o(AMD_seamless_cubemap_per_texture), GL, 2009 },
{ "GL_AMD_shader_stencil_export", o(ARB_shader_stencil_export), GL, 2009 },
{ "GL_APPLE_object_purgeable", o(APPLE_object_purgeable), GL, 2006 },
{ "GL_APPLE_packed_pixels", o(dummy_true), GLL, 2002 },
{ "GL_APPLE_texture_max_level", o(dummy_true), ES1 | ES2, 2009 },
{ "GL_APPLE_vertex_array_object", o(dummy_true), GLL, 2002 },
{ "GL_ATI_blend_equation_separate", o(EXT_blend_equation_separate), GL, 2003 },
{ "GL_ATI_draw_buffers", o(dummy_true), GLL, 2002 },
{ "GL_ATI_envmap_bumpmap", o(ATI_envmap_bumpmap), GLL, 2001 },
{ "GL_ATI_fragment_shader", o(ATI_fragment_shader), GLL, 2001 },
{ "GL_ATI_separate_stencil", o(ATI_separate_stencil), GLL, 2006 },
{ "GL_ATI_texture_compression_3dc", o(ATI_texture_compression_3dc), GL, 2004 },
{ "GL_ATI_texture_env_combine3", o(ATI_texture_env_combine3), GLL, 2002 },
{ "GL_ATI_texture_float", o(ARB_texture_float), GL, 2002 },
{ "GL_ATI_texture_mirror_once", o(ATI_texture_mirror_once), GL, 2006 },
{ "GL_IBM_multimode_draw_arrays", o(dummy_true), GL, 1998 },
{ "GL_IBM_rasterpos_clip", o(dummy_true), GL, 1996 },
{ "GL_IBM_texture_mirrored_repeat", o(dummy_true), GLL, 1998 },
{ "GL_INGR_blend_func_separate", o(EXT_blend_func_separate), GLL, 1999 },
{ "GL_MESA_pack_invert", o(MESA_pack_invert), GL, 2002 },
{ "GL_MESA_resize_buffers", o(MESA_resize_buffers), GL, 1999 },
{ "GL_MESA_texture_array", o(MESA_texture_array), GLL, 2007 },
{ "GL_MESA_texture_signed_rgba", o(EXT_texture_snorm), GL, 2009 },
{ "GL_MESA_window_pos", o(dummy_true), GLL, 2000 },
{ "GL_MESA_ycbcr_texture", o(MESA_ycbcr_texture), GL, 2002 },
{ "GL_NV_blend_square", o(NV_blend_square), GLL, 1999 },
{ "GL_NV_conditional_render", o(NV_conditional_render), GL, 2008 },
{ "GL_NV_depth_clamp", o(ARB_depth_clamp), GL, 2001 },
{ "GL_NV_draw_buffers", o(dummy_true), ES2, 2011 },
{ "GL_NV_fbo_color_attachments", o(EXT_framebuffer_object), ES2, 2010 },
{ "GL_NV_fog_distance", o(NV_fog_distance), GLL, 2001 },
{ "GL_NV_fragment_program_option", o(NV_fragment_program_option), GLL, 2005 },
{ "GL_NV_light_max_exponent", o(NV_light_max_exponent), GLL, 1999 },
{ "GL_NV_packed_depth_stencil", o(EXT_packed_depth_stencil), GL, 2000 },
{ "GL_NV_point_sprite", o(NV_point_sprite), GL, 2001 },
{ "GL_NV_primitive_restart", o(NV_primitive_restart), GL, 2002 },
{ "GL_NV_read_buffer", o(dummy_true), ES2, 2011 },
{ "GL_NV_texgen_reflection", o(NV_texgen_reflection), GLL, 1999 },
{ "GL_NV_texture_barrier", o(NV_texture_barrier), GL, 2009 },
{ "GL_NV_texture_env_combine4", o(NV_texture_env_combine4), GLL, 1999 },
{ "GL_NV_texture_rectangle", o(NV_texture_rectangle), GLL, 2000 },
{ "GL_S3_s3tc", o(S3_s3tc), GL, 1999 },
{ "GL_SGIS_generate_mipmap", o(dummy_true), GLL, 1997 },
{ "GL_SGIS_texture_border_clamp", o(ARB_texture_border_clamp), GLL, 1997 },
{ "GL_SGIS_texture_edge_clamp", o(dummy_true), GLL, 1997 },
{ "GL_SGIS_texture_lod", o(SGIS_texture_lod), GLL, 1997 },
{ "GL_SUN_multi_draw_arrays", o(dummy_true), GLL, 1999 },
{ 0, 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)
{
const struct extension *i;
if (name == 0)
return 0;
for (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[] = {
/* Vendor Extensions */
o(NV_light_max_exponent),
o(NV_texgen_reflection),
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_depth_clamp = GL_TRUE;
ctx->Extensions.ARB_depth_texture = GL_TRUE;
ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
ctx->Extensions.ARB_draw_instanced = GL_TRUE;
ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE;
ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
ctx->Extensions.ARB_fragment_program = GL_TRUE;
ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
ctx->Extensions.ARB_fragment_shader = GL_TRUE;
ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
/* XXX re-enable when GLSL compiler again supports geometry shaders */
#if 0
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_occlusion_query = GL_TRUE;
ctx->Extensions.ARB_occlusion_query2 = GL_TRUE;
ctx->Extensions.ARB_point_sprite = GL_TRUE;
ctx->Extensions.ARB_shader_objects = GL_TRUE;
ctx->Extensions.EXT_separate_shader_objects = GL_TRUE;
ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
ctx->Extensions.ARB_shadow = 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_non_power_of_two = GL_TRUE;
ctx->Extensions.ARB_texture_rg = GL_TRUE;
ctx->Extensions.ARB_texture_compression_rgtc = GL_TRUE;
ctx->Extensions.ARB_texture_storage = GL_TRUE;
ctx->Extensions.ARB_vertex_program = GL_TRUE;
ctx->Extensions.ARB_vertex_shader = GL_TRUE;
ctx->Extensions.ARB_sync = GL_TRUE;
ctx->Extensions.APPLE_object_purgeable = GL_TRUE;
ctx->Extensions.ATI_envmap_bumpmap = GL_TRUE;
ctx->Extensions.ATI_fragment_shader = GL_TRUE;
ctx->Extensions.ATI_texture_compression_3dc = GL_TRUE;
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_minmax = GL_TRUE;
ctx->Extensions.EXT_depth_bounds_test = GL_TRUE;
ctx->Extensions.EXT_draw_buffers2 = GL_TRUE;
ctx->Extensions.EXT_fog_coord = GL_TRUE;
ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
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_stencil_two_side = GL_TRUE;
ctx->Extensions.EXT_texture_array = GL_TRUE;
ctx->Extensions.EXT_texture_compression_latc = GL_TRUE;
ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
ctx->Extensions.EXT_texture_shared_exponent = GL_TRUE;
ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
ctx->Extensions.EXT_texture_sRGB_decode = GL_TRUE;
ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
/*ctx->Extensions.EXT_transform_feedback = GL_TRUE;*/
ctx->Extensions.EXT_vertex_array_bgra = 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;*/
ctx->Extensions.NV_fragment_program_option = GL_TRUE;
ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
ctx->Extensions.OES_standard_derivatives = GL_TRUE;
_mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1");
if (ctx->Mesa_DXTn) {
ctx->Extensions.ANGLE_texture_compression_dxt = GL_TRUE;
_mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
_mesa_enable_extension(ctx, "GL_S3_s3tc");
}
}
/**
* 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_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_dot3 = 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.EXT_blend_color = GL_TRUE;
ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
ctx->Extensions.EXT_blend_minmax = GL_TRUE;
ctx->Extensions.EXT_fog_coord = GL_TRUE;
ctx->Extensions.EXT_point_parameters = GL_TRUE;
ctx->Extensions.EXT_secondary_color = 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.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_fragment_shader = GL_TRUE;
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;
ctx->Extensions.ARB_shader_objects = GL_TRUE;
ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
ctx->Extensions.ARB_vertex_shader = GL_TRUE;
}
/**
* 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)
{
ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
}
/**
* 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 )
{
size_t offset;
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;
}
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 )
{
size_t offset;
GLboolean *base;
if (name == 0)
return GL_FALSE;
offset = name_to_offset(name);
if (offset == 0)
return GL_FALSE;
base = (GLboolean *) &ctx->Extensions;
return base[offset];
}
/**
* \brief Apply the \c MESA_EXTENSION_OVERRIDE environment variable.
*
* \c MESA_EXTENSION_OVERRIDE is a space-separated list of extensions to
* enable or disable. The list is processed thus:
* - Enable recognized extension names that are prefixed with '+'.
* - Disable recognized extension names that are prefixed with '-'.
* - Enable recognized extension names that are not prefixed.
* - Collect unrecognized extension names in a new string.
*
* \return Space-separated list of unrecognized extension names (which must
* be freed). Does not return \c NULL.
*/
static char *
get_extension_override( struct gl_context *ctx )
{
const char *env_const = _mesa_getenv("MESA_EXTENSION_OVERRIDE");
char *env;
char *ext;
char *extra_exts;
int len;
if (env_const == NULL) {
/* Return the empty string rather than NULL. This simplifies the logic
* of client functions. */
return calloc(4, sizeof(char));
}
/* extra_exts: List of unrecognized extensions. */
extra_exts = calloc(ALIGN(strlen(env_const) + 2, 4), sizeof(char));
/* Copy env_const because strtok() is destructive. */
env = strdup(env_const);
for (ext = strtok(env, " "); ext != NULL; ext = strtok(NULL, " ")) {
int enable;
int recognized;
switch (ext[0]) {
case '+':
enable = 1;
++ext;
break;
case '-':
enable = 0;
++ext;
break;
default:
enable = 1;
break;
}
recognized = set_extension(ctx, ext, enable);
if (!recognized) {
strcat(extra_exts, ext);
strcat(extra_exts, " ");
}
}
free(env);
/* Remove trailing space. */
len = strlen(extra_exts);
if (len > 0 && extra_exts[len - 1] == ' ')
extra_exts[len - 1] = '\0';
return extra_exts;
}
/**
* \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);
GLboolean *i;
const size_t *j;
/* First, turn all extensions off. */
for (i = base; i != sentinel; ++i)
*i = GL_FALSE;
/* Then, selectively turn default extensions on. */
ctx->Extensions.dummy_true = GL_TRUE;
ctx->Extensions.EXT_texture3D = GL_TRUE;
for (j = default_extensions; *j != 0; ++j)
base[*j] = GL_TRUE;
}
typedef unsigned short extension_index;
/**
* Compare two entries of the extensions table. Sorts first by year,
* then by name.
*
* Arguments are indices into extension_table.
*/
static int
extension_compare(const void *p1, const void *p2)
{
extension_index i1 = * (const extension_index *) p1;
extension_index i2 = * (const extension_index *) p2;
const struct extension *e1 = &extension_table[i1];
const struct extension *e2 = &extension_table[i2];
int res;
res = (int)e1->year - (int)e2->year;
if (res == 0) {
res = strcmp(e1->name, e2->name);
}
return res;
}
/**
* 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;
/* Number of extensions */
unsigned count;
/* Indices of the extensions sorted by year */
extension_index *extension_indices;
/* String of extra extensions. */
char *extra_extensions = get_extension_override(ctx);
GLboolean *base = (GLboolean *) &ctx->Extensions;
const struct extension *i;
unsigned j;
unsigned maxYear = ~0;
/* Check if the MESA_EXTENSION_MAX_YEAR env var is set */
{
const char *env = getenv("MESA_EXTENSION_MAX_YEAR");
if (env) {
maxYear = atoi(env);
_mesa_debug(ctx, "Note: limiting GL extensions to %u or earlier\n",
maxYear);
}
}
/* Compute length of the extension string. */
count = 0;
for (i = extension_table; i->name != 0; ++i) {
if (base[i->offset] &&
i->year <= maxYear &&
(i->api_set & (1 << ctx->API))) {
length += strlen(i->name) + 1; /* +1 for space */
++count;
}
}
if (extra_extensions != NULL)
length += 1 + strlen(extra_extensions); /* +1 for space */
exts = calloc(ALIGN(length + 1, 4), sizeof(char));
if (exts == NULL) {
free(extra_extensions);
return NULL;
}
extension_indices = malloc(count * sizeof(extension_index));
if (extension_indices == NULL) {
free(exts);
free(extra_extensions);
return NULL;
}
/* Sort extensions in chronological order because certain old applications (e.g.,
* Quake3 demo) store the extension list in a static size buffer so chronologically
* order ensure that the extensions that such applications expect will fit into
* that buffer.
*/
j = 0;
for (i = extension_table; i->name != 0; ++i) {
if (base[i->offset] &&
i->year <= maxYear &&
(i->api_set & (1 << ctx->API))) {
extension_indices[j++] = i - extension_table;
}
}
assert(j == count);
qsort(extension_indices, count, sizeof *extension_indices, extension_compare);
/* Build the extension string.*/
for (j = 0; j < count; ++j) {
i = &extension_table[extension_indices[j]];
assert(base[i->offset] && (i->api_set & (1 << ctx->API)));
strcat(exts, i->name);
strcat(exts, " ");
}
free(extension_indices);
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)
{
GLboolean *base;
const struct extension *i;
/* only count once */
if (ctx->Extensions.Count != 0)
return ctx->Extensions.Count;
base = (GLboolean *) &ctx->Extensions;
for (i = extension_table; i->name != 0; ++i) {
if (base[i->offset] && (i->api_set & (1 << ctx->API))) {
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)
{
const GLboolean *base;
size_t n;
const struct extension *i;
base = (GLboolean*) &ctx->Extensions;
n = 0;
for (i = extension_table; i->name != 0; ++i) {
if (base[i->offset] && (i->api_set & (1 << ctx->API))) {
if (n == index)
return (const GLubyte*) i->name;
else
++n;
}
}
return NULL;
}
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