diff options
Diffstat (limited to 'src/mesa/main/extensions.c')
| -rw-r--r-- | src/mesa/main/extensions.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c new file mode 100644 index 00000000000..55687294d17 --- /dev/null +++ b/src/mesa/main/extensions.c @@ -0,0 +1,196 @@ +/* $Id: extensions.c,v 1.1 1999/08/19 00:55:41 jtg Exp $ */ + +/* + * Mesa 3-D graphics library + * Version: 3.1 + * + * Copyright (C) 1999 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 <stdlib.h> +#include "extensions.h" +#include "simple_list.h" +#include "types.h" + +#define MAX_EXT_NAMELEN 80 +#define MALLOC_STRUCT(T) (struct T *) malloc( sizeof(struct T) ) + +struct extension { + struct extension *next, *prev; + int enabled; + char name[MAX_EXT_NAMELEN+1]; + void (*notify)( GLcontext *, GLboolean ); +}; + + + +static struct { int enabled; const char *name; } default_extensions[] = { + { ALWAYS_ENABLED, "GL_EXT_blend_color" }, + { ALWAYS_ENABLED, "GL_EXT_blend_minmax" }, + { ALWAYS_ENABLED, "GL_EXT_blend_logic_op" }, + { ALWAYS_ENABLED, "GL_EXT_blend_subtract" }, + { ALWAYS_ENABLED, "GL_EXT_paletted_texture" }, + { DEFAULT_ON, "GL_EXT_point_parameters" }, + { ALWAYS_ENABLED, "GL_EXT_polygon_offset" }, + { ALWAYS_ENABLED, "GL_EXT_vertex_array" }, + { ALWAYS_ENABLED, "GL_EXT_texture_object" }, + { DEFAULT_ON, "GL_EXT_texture3D" }, + { ALWAYS_ENABLED, "GL_MESA_window_pos" }, + { ALWAYS_ENABLED, "GL_MESA_resize_buffers" }, + { ALWAYS_ENABLED, "GL_EXT_shared_texture_palette" }, + { ALWAYS_ENABLED, "GL_EXT_rescale_normal" }, + { ALWAYS_ENABLED, "GL_EXT_abgr" }, + { ALWAYS_ENABLED, "GL_SGIS_texture_edge_clamp" }, + { ALWAYS_ENABLED, "GL_EXT_stencil_wrap" }, + { ALWAYS_ENABLED, "GL_INGR_blend_func_separate" }, + { DEFAULT_ON, "GL_ARB_multitexture" }, + { ALWAYS_ENABLED, "GL_NV_texgen_reflection" }, + { DEFAULT_ON, "GL_PGI_misc_hints" }, + { DEFAULT_ON, "GL_EXT_compiled_vertex_array" }, + { DEFAULT_OFF, "GL_EXT_vertex_array_set" }, + { DEFAULT_ON, "GL_EXT_clip_volume_hint" }, +}; + + +int gl_extensions_add( GLcontext *ctx, + int state, + const char *name, + void (*notify)() ) +{ + (void) notify; + + if (ctx->Extensions.ext_string == 0) + { + struct extension *t = MALLOC_STRUCT(extension); + t->enabled = state; + strncpy(t->name, name, MAX_EXT_NAMELEN); + t->name[MAX_EXT_NAMELEN] = 0; + t->notify = (void (*)(GLcontext *, GLboolean)) notify; + insert_at_tail( ctx->Extensions.ext_list, t ); + return 0; + } + return 1; +} + + +static int set_extension( GLcontext *ctx, const char *name, GLuint state ) +{ + struct extension *i; + 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 && !(i->enabled & ALWAYS_ENABLED)) + { + if (i->notify) i->notify( ctx, state ); + i->enabled = state; + } + + return 0; +} + + +int gl_extensions_enable( GLcontext *ctx, const char *name ) +{ + if (ctx->Extensions.ext_string == 0) + return set_extension( ctx, name, 1 ); + return 1; +} + + +int gl_extensions_disable( GLcontext *ctx, const char *name ) +{ + if (ctx->Extensions.ext_string == 0) + return set_extension( ctx, name, 0 ); + return 1; +} + + +void gl_extensions_dtr( GLcontext *ctx ) +{ + struct extension *i, *nexti; + + if (ctx->Extensions.ext_string) { + free( ctx->Extensions.ext_string ); + ctx->Extensions.ext_string = 0; + } + + if (ctx->Extensions.ext_list) { + foreach_s( i, nexti, ctx->Extensions.ext_list ) { + free( i ); + } + + free(ctx->Extensions.ext_list); + ctx->Extensions.ext_list = 0; + } +} + + +void gl_extensions_ctr( GLcontext *ctx ) +{ + GLuint i; + + ctx->Extensions.ext_string = 0; + 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 ); + } +} + + +const char *gl_extensions_get_string( GLcontext *ctx ) +{ + if (ctx->Extensions.ext_string == 0) + { + struct extension *i; + char *str; + GLuint len = 0; + foreach (i, ctx->Extensions.ext_list) + if (i->enabled) + len += strlen(i->name) + 1; + + if (len == 0) + return ""; + + str = (char *)malloc(len * sizeof(char)); + ctx->Extensions.ext_string = str; + + foreach (i, ctx->Extensions.ext_list) + if (i->enabled) { + strcpy(str, i->name); + str += strlen(str); + *str++ = ' '; + } + + *(str-1) = 0; + } + + return ctx->Extensions.ext_string; +} + + |