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diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
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+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5.1
+ *
+ * Copyright (C) 1999-2006 Brian Paul 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.
+ */
+
+
+#include "glheader.h"
+#include "imports.h"
+#include "context.h"
+#include "extensions.h"
+#include "simple_list.h"
+#include "mtypes.h"
+
+
+#define F(x) (int)(uintptr_t)&(((struct gl_extensions *)0)->x)
+#define ON GL_TRUE
+#define OFF GL_FALSE
+
+
+/*
+ * Note: The GL_MESAX_* extensions are placeholders for future ARB extensions.
+ */
+static const struct {
+ GLboolean enabled;
+ const char *name;
+ int flag_offset;
+} default_extensions[] = {
+ { OFF, "GL_ARB_depth_texture", F(ARB_depth_texture) },
+ { OFF, "GL_ARB_draw_buffers", F(ARB_draw_buffers) },
+ { OFF, "GL_ARB_fragment_program", F(ARB_fragment_program) },
+ { OFF, "GL_ARB_fragment_shader", F(ARB_fragment_shader) },
+ { OFF, "GL_ARB_half_float_pixel", F(ARB_half_float_pixel) },
+ { OFF, "GL_ARB_imaging", F(ARB_imaging) },
+ { OFF, "GL_ARB_multisample", F(ARB_multisample) },
+ { OFF, "GL_ARB_multitexture", F(ARB_multitexture) },
+ { OFF, "GL_ARB_occlusion_query", F(ARB_occlusion_query) },
+ { OFF, "GL_ARB_pixel_buffer_object", F(EXT_pixel_buffer_object) },
+ { OFF, "GL_ARB_point_parameters", F(EXT_point_parameters) },
+ { OFF, "GL_ARB_point_sprite", F(ARB_point_sprite) },
+ { OFF, "GL_ARB_shader_objects", F(ARB_shader_objects) },
+ { OFF, "GL_ARB_shading_language_100", F(ARB_shading_language_100) },
+ { OFF, "GL_ARB_shadow", F(ARB_shadow) },
+ { OFF, "GL_ARB_shadow_ambient", F(SGIX_shadow_ambient) },
+ { OFF, "GL_ARB_texture_border_clamp", F(ARB_texture_border_clamp) },
+ { OFF, "GL_ARB_texture_compression", F(ARB_texture_compression) },
+ { OFF, "GL_ARB_texture_cube_map", F(ARB_texture_cube_map) },
+ { OFF, "GL_ARB_texture_env_add", F(EXT_texture_env_add) },
+ { OFF, "GL_ARB_texture_env_combine", F(ARB_texture_env_combine) },
+ { OFF, "GL_ARB_texture_env_crossbar", F(ARB_texture_env_crossbar) },
+ { OFF, "GL_ARB_texture_env_dot3", F(ARB_texture_env_dot3) },
+ { OFF, "GL_MESAX_texture_float", F(ARB_texture_float) },
+ { OFF, "GL_ARB_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
+ { OFF, "GL_ARB_texture_non_power_of_two", F(ARB_texture_non_power_of_two)},
+ { OFF, "GL_ARB_texture_rectangle", F(NV_texture_rectangle) },
+ { ON, "GL_ARB_transpose_matrix", F(ARB_transpose_matrix) },
+ { OFF, "GL_ARB_vertex_buffer_object", F(ARB_vertex_buffer_object) },
+ { OFF, "GL_ARB_vertex_program", F(ARB_vertex_program) },
+ { OFF, "GL_ARB_vertex_shader", F(ARB_vertex_shader) },
+ { ON, "GL_ARB_window_pos", F(ARB_window_pos) },
+ { ON, "GL_EXT_abgr", F(EXT_abgr) },
+ { ON, "GL_EXT_bgra", F(EXT_bgra) },
+ { OFF, "GL_EXT_blend_color", F(EXT_blend_color) },
+ { OFF, "GL_EXT_blend_equation_separate", F(EXT_blend_equation_separate) },
+ { OFF, "GL_EXT_blend_func_separate", F(EXT_blend_func_separate) },
+ { OFF, "GL_EXT_blend_logic_op", F(EXT_blend_logic_op) },
+ { OFF, "GL_EXT_blend_minmax", F(EXT_blend_minmax) },
+ { OFF, "GL_EXT_blend_subtract", F(EXT_blend_subtract) },
+ { ON, "GL_EXT_clip_volume_hint", F(EXT_clip_volume_hint) },
+ { OFF, "GL_EXT_cull_vertex", F(EXT_cull_vertex) },
+ { ON, "GL_EXT_compiled_vertex_array", F(EXT_compiled_vertex_array) },
+ { OFF, "GL_EXT_convolution", F(EXT_convolution) },
+ { ON, "GL_EXT_copy_texture", F(EXT_copy_texture) },
+ { OFF, "GL_EXT_depth_bounds_test", F(EXT_depth_bounds_test) },
+ { ON, "GL_EXT_draw_range_elements", F(EXT_draw_range_elements) },
+ { OFF, "GL_EXT_framebuffer_object", F(EXT_framebuffer_object) },
+ { OFF, "GL_EXT_framebuffer_blit", F(EXT_framebuffer_blit) },
+ { OFF, "GL_EXT_fog_coord", F(EXT_fog_coord) },
+ { OFF, "GL_EXT_gpu_program_parameters", F(EXT_gpu_program_parameters) },
+ { OFF, "GL_EXT_histogram", F(EXT_histogram) },
+ { OFF, "GL_EXT_multi_draw_arrays", F(EXT_multi_draw_arrays) },
+ { OFF, "GL_EXT_packed_depth_stencil", F(EXT_packed_depth_stencil) },
+ { ON, "GL_EXT_packed_pixels", F(EXT_packed_pixels) },
+ { OFF, "GL_EXT_paletted_texture", F(EXT_paletted_texture) },
+ { OFF, "GL_EXT_pixel_buffer_object", F(EXT_pixel_buffer_object) },
+ { OFF, "GL_EXT_point_parameters", F(EXT_point_parameters) },
+ { ON, "GL_EXT_polygon_offset", F(EXT_polygon_offset) },
+ { ON, "GL_EXT_rescale_normal", F(EXT_rescale_normal) },
+ { OFF, "GL_EXT_secondary_color", F(EXT_secondary_color) },
+ { ON, "GL_EXT_separate_specular_color", F(EXT_separate_specular_color) },
+ { OFF, "GL_EXT_shadow_funcs", F(EXT_shadow_funcs) },
+ { OFF, "GL_EXT_shared_texture_palette", F(EXT_shared_texture_palette) },
+ { OFF, "GL_EXT_stencil_two_side", F(EXT_stencil_two_side) },
+ { OFF, "GL_EXT_stencil_wrap", F(EXT_stencil_wrap) },
+ { ON, "GL_EXT_subtexture", F(EXT_subtexture) },
+ { ON, "GL_EXT_texture", F(EXT_texture) },
+ { ON, "GL_EXT_texture3D", F(EXT_texture3D) },
+ { OFF, "GL_EXT_texture_compression_s3tc", F(EXT_texture_compression_s3tc) },
+ { ON, "GL_EXT_texture_edge_clamp", F(SGIS_texture_edge_clamp) },
+ { OFF, "GL_EXT_texture_env_add", F(EXT_texture_env_add) },
+ { OFF, "GL_EXT_texture_env_combine", F(EXT_texture_env_combine) },
+ { OFF, "GL_EXT_texture_env_dot3", F(EXT_texture_env_dot3) },
+ { OFF, "GL_EXT_texture_filter_anisotropic", F(EXT_texture_filter_anisotropic) },
+ { OFF, "GL_EXT_texture_lod_bias", F(EXT_texture_lod_bias) },
+ { OFF, "GL_EXT_texture_mirror_clamp", F(EXT_texture_mirror_clamp) },
+ { ON, "GL_EXT_texture_object", F(EXT_texture_object) },
+ { OFF, "GL_EXT_texture_rectangle", F(NV_texture_rectangle) },
+ { OFF, "GL_EXT_texture_sRGB", F(EXT_texture_sRGB) },
+ { OFF, "GL_EXT_timer_query", F(EXT_timer_query) },
+ { ON, "GL_EXT_vertex_array", F(EXT_vertex_array) },
+ { OFF, "GL_EXT_vertex_array_set", F(EXT_vertex_array_set) },
+ { OFF, "GL_3DFX_texture_compression_FXT1", F(TDFX_texture_compression_FXT1) },
+ { OFF, "GL_APPLE_client_storage", F(APPLE_client_storage) },
+ { ON, "GL_APPLE_packed_pixels", F(APPLE_packed_pixels) },
+ { OFF, "GL_APPLE_vertex_array_object", F(APPLE_vertex_array_object) },
+ { OFF, "GL_ATI_blend_equation_separate", F(EXT_blend_equation_separate) },
+ { OFF, "GL_ATI_texture_env_combine3", F(ATI_texture_env_combine3)},
+ { OFF, "GL_ATI_texture_mirror_once", F(ATI_texture_mirror_once)},
+ { OFF, "GL_ATI_fragment_shader", F(ATI_fragment_shader)},
+ { OFF, "GL_IBM_multimode_draw_arrays", F(IBM_multimode_draw_arrays) },
+ { ON, "GL_IBM_rasterpos_clip", F(IBM_rasterpos_clip) },
+ { OFF, "GL_IBM_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
+ { OFF, "GL_INGR_blend_func_separate", F(EXT_blend_func_separate) },
+ { OFF, "GL_MESA_pack_invert", F(MESA_pack_invert) },
+ { OFF, "GL_MESA_packed_depth_stencil", F(MESA_packed_depth_stencil) },
+ { OFF, "GL_MESA_program_debug", F(MESA_program_debug) },
+ { OFF, "GL_MESA_resize_buffers", F(MESA_resize_buffers) },
+ { OFF, "GL_MESA_ycbcr_texture", F(MESA_ycbcr_texture) },
+ { ON, "GL_MESA_window_pos", F(ARB_window_pos) },
+ { OFF, "GL_NV_blend_square", F(NV_blend_square) },
+ { OFF, "GL_NV_fragment_program", F(NV_fragment_program) },
+ { ON, "GL_NV_light_max_exponent", F(NV_light_max_exponent) },
+ { OFF, "GL_NV_point_sprite", F(NV_point_sprite) },
+ { OFF, "GL_NV_texture_rectangle", F(NV_texture_rectangle) },
+ { ON, "GL_NV_texgen_reflection", F(NV_texgen_reflection) },
+ { OFF, "GL_NV_vertex_program", F(NV_vertex_program) },
+ { OFF, "GL_NV_vertex_program1_1", F(NV_vertex_program1_1) },
+ { ON, "GL_OES_read_format", F(OES_read_format) },
+ { OFF, "GL_SGI_color_matrix", F(SGI_color_matrix) },
+ { OFF, "GL_SGI_color_table", F(SGI_color_table) },
+ { OFF, "GL_SGI_texture_color_table", F(SGI_texture_color_table) },
+ { OFF, "GL_SGIS_generate_mipmap", F(SGIS_generate_mipmap) },
+ { OFF, "GL_SGIS_texture_border_clamp", F(ARB_texture_border_clamp) },
+ { ON, "GL_SGIS_texture_edge_clamp", F(SGIS_texture_edge_clamp) },
+ { ON, "GL_SGIS_texture_lod", F(SGIS_texture_lod) },
+ { OFF, "GL_SGIX_depth_texture", F(SGIX_depth_texture) },
+ { OFF, "GL_SGIX_shadow", F(SGIX_shadow) },
+ { OFF, "GL_SGIX_shadow_ambient", F(SGIX_shadow_ambient) },
+ { OFF, "GL_SUN_multi_draw_arrays", F(EXT_multi_draw_arrays) },
+ { OFF, "GL_S3_s3tc", F(S3_s3tc) },
+};
+
+
+
+/**
+ * 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(GLcontext *ctx)
+{
+ ctx->Extensions.ARB_depth_texture = GL_TRUE;
+ ctx->Extensions.ARB_draw_buffers = GL_TRUE;
+#if FEATURE_ARB_fragment_program
+ ctx->Extensions.ARB_fragment_program = GL_TRUE;
+#endif
+#if FEATURE_ARB_fragment_shader
+ ctx->Extensions.ARB_fragment_shader = GL_TRUE;
+#endif
+ ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
+ ctx->Extensions.ARB_imaging = GL_TRUE;
+ ctx->Extensions.ARB_multitexture = GL_TRUE;
+#if FEATURE_ARB_occlusion_query
+ ctx->Extensions.ARB_occlusion_query = GL_TRUE;
+#endif
+ ctx->Extensions.ARB_point_sprite = 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.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_mirrored_repeat = GL_TRUE;
+ ctx->Extensions.ARB_texture_non_power_of_two = 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
+ ctx->Extensions.APPLE_vertex_array_object = 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.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_convolution = GL_TRUE;
+ ctx->Extensions.EXT_depth_bounds_test = 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
+ ctx->Extensions.EXT_histogram = GL_TRUE;
+ 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_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_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.IBM_multimode_draw_arrays = GL_TRUE;
+ ctx->Extensions.MESA_pack_invert = GL_TRUE;
+#if FEATURE_MESA_program_debug
+ ctx->Extensions.MESA_program_debug = GL_TRUE;
+#endif
+ ctx->Extensions.MESA_resize_buffers = GL_TRUE;
+ ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
+ ctx->Extensions.NV_blend_square = GL_TRUE;
+ /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/
+ ctx->Extensions.NV_point_sprite = 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
+ ctx->Extensions.SGI_color_matrix = GL_TRUE;
+ ctx->Extensions.SGI_color_table = GL_TRUE;
+ ctx->Extensions.SGI_texture_color_table = GL_TRUE;
+ ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;
+ ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE;
+ ctx->Extensions.SGIX_depth_texture = GL_TRUE;
+ ctx->Extensions.SGIX_shadow = GL_TRUE;
+ ctx->Extensions.SGIX_shadow_ambient = GL_TRUE;
+#if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
+ ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
+#endif
+}
+
+
+/**
+ * Enable GL_ARB_imaging and all the EXT extensions that are subsets of it.
+ */
+void
+_mesa_enable_imaging_extensions(GLcontext *ctx)
+{
+ ctx->Extensions.ARB_imaging = GL_TRUE;
+ ctx->Extensions.EXT_blend_color = GL_TRUE;
+ ctx->Extensions.EXT_blend_minmax = GL_TRUE;
+ ctx->Extensions.EXT_blend_subtract = GL_TRUE;
+ ctx->Extensions.EXT_convolution = GL_TRUE;
+ ctx->Extensions.EXT_histogram = GL_TRUE;
+ ctx->Extensions.SGI_color_matrix = GL_TRUE;
+ ctx->Extensions.SGI_color_table = GL_TRUE;
+}
+
+
+
+/**
+ * Enable all OpenGL 1.3 features and extensions.
+ * A convenience function to be called by drivers.
+ */
+void
+_mesa_enable_1_3_extensions(GLcontext *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(GLcontext *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_logic_op = 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(GLcontext *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(GLcontext *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.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_FALSE; /* yes, turn it off */
+#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(GLcontext *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
+ /* plus: shading language extensions, non-square uniform matrices */
+}
+
+
+
+/**
+ * Either enable or disable the named extension.
+ */
+static void
+set_extension( GLcontext *ctx, const char *name, GLboolean state )
+{
+ GLboolean *base = (GLboolean *) &ctx->Extensions;
+ GLuint i;
+
+ 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;
+ }
+
+ for (i = 0 ; i < Elements(default_extensions) ; i++) {
+ if (_mesa_strcmp(default_extensions[i].name, name) == 0) {
+ if (default_extensions[i].flag_offset) {
+ GLboolean *enabled = base + default_extensions[i].flag_offset;
+ *enabled = state;
+ }
+ return;
+ }
+ }
+ _mesa_problem(ctx, "Trying to enable unknown extension: %s", name);
+}
+
+
+/**
+ * Enable the named extension.
+ * Typically called by drivers.
+ */
+void
+_mesa_enable_extension( GLcontext *ctx, const char *name )
+{
+ set_extension(ctx, name, GL_TRUE);
+}
+
+
+/**
+ * Disable the named extension.
+ * XXX is this really needed???
+ */
+void
+_mesa_disable_extension( GLcontext *ctx, const char *name )
+{
+ set_extension(ctx, name, GL_FALSE);
+}
+
+
+/**
+ * Test if the named extension is enabled in this context.
+ */
+GLboolean
+_mesa_extension_is_enabled( GLcontext *ctx, const char *name )
+{
+ const GLboolean *base = (const GLboolean *) &ctx->Extensions;
+ GLuint i;
+
+ for (i = 0 ; i < Elements(default_extensions) ; i++) {
+ if (_mesa_strcmp(default_extensions[i].name, name) == 0) {
+ if (!default_extensions[i].flag_offset)
+ return GL_TRUE;
+ return *(base + default_extensions[i].flag_offset);
+ }
+ }
+ return GL_FALSE;
+}
+
+
+/**
+ * Run through the default_extensions array above and set the
+ * ctx->Extensions.ARB/EXT_* flags accordingly.
+ * To be called during context initialization.
+ */
+void
+_mesa_init_extensions( GLcontext *ctx )
+{
+ GLboolean *base = (GLboolean *) &ctx->Extensions;
+ GLuint i;
+
+ for (i = 0 ; i < Elements(default_extensions) ; i++) {
+ if (default_extensions[i].enabled &&
+ default_extensions[i].flag_offset) {
+ *(base + default_extensions[i].flag_offset) = GL_TRUE;
+ }
+ }
+}
+
+
+/**
+ * Construct the GL_EXTENSIONS string. Called the first time that
+ * glGetString(GL_EXTENSIONS) is called.
+ */
+GLubyte *
+_mesa_make_extension_string( GLcontext *ctx )
+{
+ const GLboolean *base = (const GLboolean *) &ctx->Extensions;
+ GLuint extStrLen = 0;
+ GLubyte *s;
+ GLuint i;
+
+ /* first, compute length of the extension string */
+ for (i = 0 ; i < Elements(default_extensions) ; i++) {
+ if (!default_extensions[i].flag_offset ||
+ *(base + default_extensions[i].flag_offset)) {
+ extStrLen += (GLuint)_mesa_strlen(default_extensions[i].name) + 1;
+ }
+ }
+ s = (GLubyte *) _mesa_malloc(extStrLen);
+
+ /* second, build the extension string */
+ extStrLen = 0;
+ for (i = 0 ; i < Elements(default_extensions) ; i++) {
+ if (!default_extensions[i].flag_offset ||
+ *(base + default_extensions[i].flag_offset)) {
+ GLuint len = (GLuint)_mesa_strlen(default_extensions[i].name);
+ _mesa_memcpy(s + extStrLen, default_extensions[i].name, len);
+ extStrLen += len;
+ s[extStrLen] = (GLubyte) ' ';
+ extStrLen++;
+ }
+ }
+ ASSERT(extStrLen > 0);
+
+ s[extStrLen - 1] = 0;
+
+ return s;
+}