-/* $Id: extensions.c,v 1.32 2000/06/27 21:42:13 brianp Exp $ */
+/* $Id: extensions.c,v 1.73 2002/05/02 00:59:20 brianp Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 3.3
- *
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
- *
+ * Version: 4.1
+ *
+ * Copyright (C) 1999-2002 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
#include "extensions.h"
#include "mem.h"
#include "simple_list.h"
-#include "types.h"
+#include "mtypes.h"
#endif
struct extension {
struct extension *next, *prev;
GLint enabled;
+ GLboolean *flag; /* optional flag stored elsewhere */
char name[MAX_EXT_NAMELEN+1];
- void (*notify)( GLcontext *, GLboolean );
+ void (*notify)( GLcontext *, GLboolean );
};
+#define F(x) (int)&(((struct gl_extensions *)0)->x)
+#define ON GL_TRUE
+#define OFF GL_FALSE
+
+static struct {
+ GLboolean enabled;
+ const char *name;
+ int flag_offset;
+} default_extensions[] = {
+ { OFF, "GL_ARB_depth_texture", F(ARB_depth_texture) },
+ { OFF, "GL_ARB_imaging", F(ARB_imaging) },
+ { OFF, "GL_ARB_multisample", F(ARB_multisample) },
+ { OFF, "GL_ARB_multitexture", F(ARB_multitexture) },
+ { OFF, "GL_ARB_point_parameters", F(EXT_point_parameters) },
+ { 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_ARB_texture_mirrored_repeat", F(ARB_texture_mirrored_repeat)},
+ { ON, "GL_ARB_transpose_matrix", 0 },
+ { ON, "GL_ARB_window_pos", F(ARB_window_pos) },
+ { ON, "GL_EXT_abgr", 0 },
+ { ON, "GL_EXT_bgra", 0 },
+ { OFF, "GL_EXT_blend_color", F(EXT_blend_color) },
+ { 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", 0 },
+ { OFF, "GL_EXT_convolution", F(EXT_convolution) },
+ { ON, "GL_EXT_compiled_vertex_array", F(EXT_compiled_vertex_array) },
+ { OFF, "GL_EXT_fog_coord", F(EXT_fog_coord) },
+ { OFF, "GL_EXT_histogram", F(EXT_histogram) },
+ { ON, "GL_EXT_packed_pixels", F(EXT_packed_pixels) },
+ { OFF, "GL_EXT_paletted_texture", F(EXT_paletted_texture) },
+ { 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) },
+ { OFF, "GL_EXT_shadow_funcs", F(EXT_shadow_funcs) },
+ { OFF, "GL_EXT_shared_texture_palette", F(EXT_shared_texture_palette) },
+ { OFF, "GL_EXT_stencil_wrap", F(EXT_stencil_wrap) },
+ { ON, "GL_EXT_texture3D", F(EXT_texture3D) },
+ { OFF, "GL_EXT_texture_compression_s3tc", F(EXT_texture_compression_s3tc) },
+ { OFF, "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) },
+ { ON, "GL_EXT_texture_object", F(EXT_texture_object) },
+ { OFF, "GL_EXT_texture_lod_bias", F(EXT_texture_lod_bias) },
+ { ON, "GL_EXT_vertex_array", 0 },
+ { OFF, "GL_EXT_vertex_array_set", F(EXT_vertex_array_set) },
+ { OFF, "GL_HP_occlusion_test", F(HP_occlusion_test) },
+ { ON, "GL_IBM_rasterpos_clip", F(IBM_rasterpos_clip) },
+ { OFF, "GL_INGR_blend_func_separate", F(INGR_blend_func_separate) },
+ { OFF, "GL_MESA_packed_depth_stencil", 0 },
+ { OFF, "GL_MESA_resize_buffers", F(MESA_resize_buffers) },
+ { OFF, "GL_MESA_sprite_point", F(MESA_sprite_point) },
+ { ON, "GL_MESA_window_pos", F(MESA_window_pos) },
+ { OFF, "GL_NV_blend_square", F(NV_blend_square) },
+ { 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) },
+ { OFF, "GL_SGI_color_matrix", F(SGI_color_matrix) },
+ { OFF, "GL_SGI_color_table", F(SGI_color_table) },
+ { OFF, "GL_SGIS_generate_mipmap", F(SGIS_generate_mipmap) },
+ { OFF, "GL_SGIS_pixel_texture", F(SGIS_pixel_texture) },
+ { OFF, "GL_SGIS_texture_border_clamp", F(ARB_texture_border_clamp) },
+ { OFF, "GL_SGIS_texture_edge_clamp", F(SGIS_texture_edge_clamp) },
+ { OFF, "GL_SGIX_depth_texture", F(SGIX_depth_texture) },
+ { OFF, "GL_SGIX_pixel_texture", F(SGIX_pixel_texture) },
+ { OFF, "GL_SGIX_shadow", F(SGIX_shadow) },
+ { OFF, "GL_SGIX_shadow_ambient", F(SGIX_shadow_ambient) },
+ { OFF, "GL_3DFX_texture_compression_FXT1", F(_3DFX_texture_compression_FXT1) }
+};
-static struct { int enabled; const char *name; } default_extensions[] = {
- { DEFAULT_OFF, "GL_ARB_imaging" }, /* in progress */
- { DEFAULT_ON, "GL_ARB_multitexture" },
- { DEFAULT_OFF, "GL_ARB_texture_compression" }, /* in progress */
- { DEFAULT_OFF, "GL_ARB_texture_cube_map" }, /* in progress */
- { ALWAYS_ENABLED, "GL_ARB_tranpose_matrix" },
- { ALWAYS_ENABLED, "GL_EXT_abgr" },
- { DEFAULT_ON, "GL_EXT_blend_color" },
- { DEFAULT_ON, "GL_EXT_blend_func_separate" },
- { DEFAULT_ON, "GL_EXT_blend_logic_op" },
- { DEFAULT_ON, "GL_EXT_blend_minmax" },
- { DEFAULT_ON, "GL_EXT_blend_subtract" },
- { DEFAULT_ON, "GL_EXT_clip_volume_hint" },
- { DEFAULT_OFF, "GL_EXT_convolution" }, /* in progress */
- { DEFAULT_ON, "GL_EXT_compiled_vertex_array" },
- { DEFAULT_ON, "GL_EXT_histogram" },
- { DEFAULT_ON, "GL_EXT_packed_pixels" },
- { DEFAULT_ON, "GL_EXT_paletted_texture" },
- { DEFAULT_ON, "GL_EXT_point_parameters" },
- { ALWAYS_ENABLED, "GL_EXT_polygon_offset" },
- { ALWAYS_ENABLED, "GL_EXT_rescale_normal" },
- { DEFAULT_ON, "GL_EXT_shared_texture_palette" },
- { ALWAYS_ENABLED, "GL_EXT_stencil_wrap" },
- { DEFAULT_ON, "GL_EXT_texture3D" },
- { DEFAULT_OFF, "GL_EXT_texture_compression_s3tc" },
- { DEFAULT_OFF, "GL_EXT_texture_env" },
- { DEFAULT_ON, "GL_EXT_texture_env_add" },
- { DEFAULT_OFF, "GL_EXT_texture_env_combine" },
- { ALWAYS_ENABLED, "GL_EXT_texture_object" },
- { DEFAULT_ON, "GL_EXT_texture_lod_bias" },
- { ALWAYS_ENABLED, "GL_EXT_vertex_array" },
- { DEFAULT_OFF, "GL_EXT_vertex_array_set" },
- { DEFAULT_OFF, "GL_HP_occlusion_test" },
- { DEFAULT_ON, "GL_INGR_blend_func_separate" },
- { ALWAYS_ENABLED, "GL_MESA_window_pos" },
- { ALWAYS_ENABLED, "GL_MESA_resize_buffers" },
- { DEFAULT_OFF, "GL_NV_blend_square" },
- { ALWAYS_ENABLED, "GL_NV_texgen_reflection" },
- { DEFAULT_ON, "GL_PGI_misc_hints" },
- { DEFAULT_ON, "GL_SGI_color_matrix" },
- { DEFAULT_ON, "GL_SGI_color_table" },
- { DEFAULT_ON, "GL_SGIS_pixel_texture" },
- { DEFAULT_ON, "GL_SGIS_texture_edge_clamp" },
- { DEFAULT_ON, "GL_SGIX_pixel_texture" },
- { DEFAULT_OFF, "GL_3DFX_texture_compression_FXT1" }
-};
/*
- * Update the boolean convenience flags in the Extensions struct.
+ * Enable all extensions suitable for a software-only renderer.
+ * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc.
*/
-static void
-update_extension_flags( GLcontext *ctx )
+void
+_mesa_enable_sw_extensions(GLcontext *ctx)
+{
+ const char *extensions[] = {
+ "GL_ARB_depth_texture",
+ "GL_ARB_imaging",
+ "GL_ARB_multitexture",
+ "GL_ARB_point_parameters",
+ "GL_ARB_shadow",
+ "GL_ARB_shadow_ambient",
+ "GL_ARB_texture_border_clamp",
+ "GL_ARB_texture_cube_map",
+ "GL_ARB_texture_env_add",
+ "GL_ARB_texture_env_combine",
+ "GL_ARB_texture_env_crossbar",
+ "GL_ARB_texture_env_dot3",
+ "GL_ARB_texture_mirrored_repeat",
+ "GL_EXT_blend_color",
+ "GL_EXT_blend_func_separate",
+ "GL_EXT_blend_logic_op",
+ "GL_EXT_blend_minmax",
+ "GL_EXT_blend_subtract",
+ "GL_EXT_convolution",
+ "GL_EXT_fog_coord",
+ "GL_EXT_histogram",
+ "GL_EXT_paletted_texture",
+ "GL_EXT_point_parameters",
+ "GL_EXT_shadow_funcs",
+ "GL_EXT_secondary_color",
+ "GL_EXT_shared_texture_palette",
+ "GL_EXT_stencil_wrap",
+ "GL_EXT_texture_edge_clamp",
+ "GL_EXT_texture_env_add",
+ "GL_EXT_texture_env_combine",
+ "GL_EXT_texture_env_dot3",
+ "GL_EXT_texture_lod_bias",
+ "GL_HP_occlusion_test",
+ "GL_INGR_blend_func_separate",
+ "GL_MESA_resize_buffers",
+ "GL_NV_blend_square",
+ "GL_NV_texgen_reflection",
+ "GL_NV_vertex_program",
+ "GL_NV_vertex_program1_1",
+ "GL_SGI_color_matrix",
+ "GL_SGI_color_table",
+ "GL_SGIS_generate_mipmap",
+ "GL_SGIS_pixel_texture",
+ "GL_SGIS_texture_edge_clamp",
+ "GL_SGIS_texture_border_clamp",
+ "GL_SGIX_depth_texture",
+ "GL_SGIX_pixel_texture",
+ "GL_SGIX_shadow",
+ "GL_SGIX_shadow_ambient",
+ NULL
+ };
+ GLuint i;
+
+ for (i = 0; extensions[i]; i++) {
+ _mesa_enable_extension(ctx, extensions[i]);
+ }
+}
+
+
+/*
+ * Enable GL_ARB_imaging and all the EXT extensions that are subsets of it.
+ */
+void
+_mesa_enable_imaging_extensions(GLcontext *ctx)
+{
+ const char *extensions[] = {
+ "GL_ARB_imaging",
+ "GL_EXT_blend_color",
+ "GL_EXT_blend_minmax",
+ "GL_EXT_blend_subtract",
+ "GL_EXT_convolution",
+ "GL_EXT_histogram",
+ "GL_SGI_color_matrix",
+ "GL_SGI_color_table",
+ NULL
+ };
+ GLuint i;
+
+ for (i = 0; extensions[i]; i++) {
+ _mesa_enable_extension(ctx, extensions[i]);
+ }
+}
+
+
+
+/*
+ * Enable all OpenGL 1.3 features and extensions.
+ */
+void
+_mesa_enable_1_3_extensions(GLcontext *ctx)
{
- /* Update flags */
- ctx->Extensions.HaveTextureEnvAdd = gl_extension_is_enabled(ctx, "GL_EXT_texture_env_add");
- ctx->Extensions.HaveTextureEnvCombine = gl_extension_is_enabled(ctx, "GL_EXT_texture_env_combine");
- ctx->Extensions.HaveTextureLodBias = gl_extension_is_enabled(ctx, "GL_EXT_texture_lod_bias");
- ctx->Extensions.HaveHpOcclusionTest = gl_extension_is_enabled(ctx, "GL_HP_occlusion_test");
- ctx->Extensions.HaveTextureCubeMap = gl_extension_is_enabled(ctx, "GL_ARB_texture_cube_map");
- ctx->Extensions.HaveTextureCompression = gl_extension_is_enabled(ctx, "GL_ARB_texture_compression");
- ctx->Extensions.HaveTextureCompressionS3TC = gl_extension_is_enabled(ctx, "GL_EXT_texture_compression_s3tc");
- ctx->Extensions.HaveTextureCompressionFXT1 = gl_extension_is_enabled(ctx, "GL_3DFX_texture_compression_FXT1");
- ctx->Extensions.HaveBlendSquare = gl_extension_is_enabled(ctx, "GL_NV_blend_square");
+ const char *extensions[] = {
+ "GL_ARB_multisample",
+ "GL_ARB_multitexture",
+ "GL_ARB_texture_border_clamp",
+ "GL_ARB_texture_compression",
+ "GL_ARB_texture_cube_map",
+ "GL_ARB_texture_env_add",
+ "GL_ARB_texture_env_combine",
+ "GL_ARB_texture_env_dot3",
+ "GL_ARB_transpose_matrix",
+ NULL
+ };
+ GLuint i;
+
+ for (i = 0; extensions[i]; i++) {
+ _mesa_enable_extension(ctx, extensions[i]);
+ }
}
-int gl_extensions_add( GLcontext *ctx,
- int state,
- const char *name,
- void (*notify)(void) )
+/*
+ * Add a new extenstion. This would be called from a Mesa driver.
+ */
+void
+_mesa_add_extension( GLcontext *ctx,
+ GLboolean enabled,
+ const char *name,
+ GLboolean *flag_ptr )
{
- (void) notify;
+ /* We should never try to add an extension after
+ * _mesa_extensions_get_string() has been called!
+ */
+ assert(ctx->Extensions.ext_string == 0);
- if (ctx->Extensions.ext_string == 0)
{
struct extension *t = MALLOC_STRUCT(extension);
- t->enabled = state;
+ t->enabled = enabled;
strncpy(t->name, name, MAX_EXT_NAMELEN);
t->name[MAX_EXT_NAMELEN] = 0;
- t->notify = (void (*)(GLcontext *, GLboolean)) notify;
+ t->flag = flag_ptr;
+ if (t->flag)
+ *t->flag = enabled;
insert_at_tail( ctx->Extensions.ext_list, t );
- return 0;
}
- return 1;
}
/*
* Either enable or disable the named extension.
*/
-static int set_extension( GLcontext *ctx, const char *name, GLint state )
+static void
+set_extension( GLcontext *ctx, const char *name, GLint state )
{
+ /* XXX we should assert that ext_string is null. We should never be
+ * enabling/disabling extensions after _mesa_extensions_get_string()
+ * has been called!
+ */
struct extension *i;
- foreach( i, ctx->Extensions.ext_list )
- if (strncmp(i->name, name, MAX_EXT_NAMELEN) == 0)
+ foreach( i, ctx->Extensions.ext_list )
+ if (strncmp(i->name, name, MAX_EXT_NAMELEN) == 0)
break;
- if (i == ctx->Extensions.ext_list)
- return 1;
-
- if (!(i->enabled & ALWAYS_ENABLED)) {
- if (i->notify) i->notify( ctx, state );
- i->enabled = state;
+ if (i == ctx->Extensions.ext_list) {
+ /* this is an error. Drivers should never try to enable/disable
+ * an extension which is unknown to Mesa or wasn't added by calling
+ * _mesa_add_extension().
+ */
+ return;
}
- update_extension_flags(ctx);
+ if (i->flag)
+ *(i->flag) = state;
+ i->enabled = state;
+}
- return 0;
-}
-int gl_extensions_enable( GLcontext *ctx, const char *name )
+void
+_mesa_enable_extension( GLcontext *ctx, const char *name )
{
- if (ctx->Extensions.ext_string == 0)
- return set_extension( ctx, name, 1 );
- return 1;
+ if (ctx->Extensions.ext_string == 0)
+ set_extension( ctx, name, 1 );
}
-int gl_extensions_disable( GLcontext *ctx, const char *name )
+void
+_mesa_disable_extension( GLcontext *ctx, const char *name )
{
- if (ctx->Extensions.ext_string == 0)
- return set_extension( ctx, name, 0 );
- return 1;
+ if (ctx->Extensions.ext_string == 0)
+ set_extension( ctx, name, 0 );
}
-
+
/*
* Test if the named extension is enabled in this context.
*/
-GLboolean gl_extension_is_enabled( GLcontext *ctx, const char *name)
+GLboolean
+_mesa_extension_is_enabled( GLcontext *ctx, const char *name)
{
struct extension *i;
foreach( i, ctx->Extensions.ext_list )
}
-void gl_extensions_dtr( GLcontext *ctx )
+void
+_mesa_extensions_dtr( GLcontext *ctx )
{
struct extension *i, *nexti;
remove_from_list( i );
FREE( i );
}
-
+
FREE(ctx->Extensions.ext_list);
ctx->Extensions.ext_list = 0;
- }
+ }
}
-void gl_extensions_ctr( GLcontext *ctx )
+void
+_mesa_extensions_ctr( GLcontext *ctx )
{
GLuint i;
+ GLboolean *base = (GLboolean *)&ctx->Extensions;
- ctx->Extensions.ext_string = 0;
+ ctx->Extensions.ext_string = NULL;
ctx->Extensions.ext_list = MALLOC_STRUCT(extension);
make_empty_list( ctx->Extensions.ext_list );
for (i = 0 ; i < Elements(default_extensions) ; i++) {
- gl_extensions_add( ctx,
- default_extensions[i].enabled,
- default_extensions[i].name,
- 0 );
+ GLboolean *ptr = NULL;
+
+ if (default_extensions[i].flag_offset)
+ ptr = base + default_extensions[i].flag_offset;
+
+ (void) _mesa_add_extension( ctx,
+ default_extensions[i].enabled,
+ default_extensions[i].name,
+ ptr);
}
- update_extension_flags(ctx);
}
-const char *gl_extensions_get_string( GLcontext *ctx )
+const char *
+_mesa_extensions_get_string( GLcontext *ctx )
{
- if (ctx->Extensions.ext_string == 0)
+ if (ctx->Extensions.ext_string == 0)
{
struct extension *i;
char *str;
GLuint len = 0;
- foreach (i, ctx->Extensions.ext_list)
+ foreach (i, ctx->Extensions.ext_list)
if (i->enabled)
len += strlen(i->name) + 1;
-
- if (len == 0)
+
+ if (len == 0)
return "";
str = (char *)MALLOC(len * sizeof(char));
ctx->Extensions.ext_string = str;
- foreach (i, ctx->Extensions.ext_list)
+ foreach (i, ctx->Extensions.ext_list)
if (i->enabled) {
strcpy(str, i->name);
str += strlen(str);
*(str-1) = 0;
}
-
+
return ctx->Extensions.ext_string;
}
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