-/* $Id: extensions.c,v 1.1 1999/08/19 00:55:41 jtg Exp $ */
+/* $Id: extensions.c,v 1.20 2000/03/11 23:23:26 brianp Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 3.1
+ * Version: 3.3
*
- * Copyright (C) 1999 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2000 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"),
*/
-#include <stdlib.h>
+#ifdef PC_HEADER
+#include "all.h"
+#else
+#include "glheader.h"
+#include "context.h"
#include "extensions.h"
+#include "mem.h"
#include "simple_list.h"
#include "types.h"
+#endif
+
#define MAX_EXT_NAMELEN 80
-#define MALLOC_STRUCT(T) (struct T *) malloc( sizeof(struct T) )
struct extension {
struct extension *next, *prev;
- int enabled;
+ GLint 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_blend_color" },
+ { DEFAULT_OFF, "ARB_imaging" },
+ { DEFAULT_ON, "GL_EXT_blend_minmax" },
+ { DEFAULT_ON, "GL_EXT_blend_logic_op" },
+ { DEFAULT_ON, "GL_EXT_blend_subtract" },
+ { DEFAULT_ON, "GL_EXT_paletted_texture" },
{ DEFAULT_ON, "GL_EXT_point_parameters" },
{ ALWAYS_ENABLED, "GL_EXT_polygon_offset" },
{ ALWAYS_ENABLED, "GL_EXT_vertex_array" },
{ DEFAULT_ON, "GL_EXT_texture3D" },
{ ALWAYS_ENABLED, "GL_MESA_window_pos" },
{ ALWAYS_ENABLED, "GL_MESA_resize_buffers" },
- { ALWAYS_ENABLED, "GL_EXT_shared_texture_palette" },
+ { DEFAULT_ON, "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_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" },
+ { DEFAULT_ON, "GL_EXT_texture_env_add" },
+ { ALWAYS_ENABLED, "GL_ARB_tranpose_matrix" },
+ { DEFAULT_OFF, "GL_EXT_vertex_array_set" },
+ { DEFAULT_OFF, "GL_EXT_texture_env" },
+ { DEFAULT_ON, "GL_EXT_texture_lod_bias" },
+ { DEFAULT_OFF, "GL_HP_occlusion_test" }
};
+/*
+ * Update the boolean convenience flags in the Extensions struct.
+ */
+static void
+update_extension_flags( GLcontext *ctx )
+{
+ /* Update flags */
+ ctx->Extensions.HaveTextureEnvAdd = gl_extension_is_enabled(ctx, "GL_EXT_texture_env_add");
+ 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");
+}
+
+
+
int gl_extensions_add( GLcontext *ctx,
int state,
const char *name,
- void (*notify)() )
+ void (*notify)(void) )
{
(void) notify;
}
-static int set_extension( GLcontext *ctx, const char *name, GLuint state )
+/*
+ * Either enable or disable the named extension.
+ */
+static int set_extension( GLcontext *ctx, const char *name, GLint 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 == ctx->Extensions.ext_list)
+ return 1;
- if (i->enabled && !(i->enabled & ALWAYS_ENABLED))
- {
+ if (i->enabled && !(i->enabled & ALWAYS_ENABLED)) {
if (i->notify) i->notify( ctx, state );
i->enabled = state;
}
+ update_extension_flags(ctx);
+
return 0;
}
}
+/*
+ * Test if the named extension is enabled in this context.
+ */
+GLboolean gl_extension_is_enabled( GLcontext *ctx, const char *name)
+{
+ struct extension *i;
+ foreach( i, ctx->Extensions.ext_list )
+ if (strncmp(i->name, name, MAX_EXT_NAMELEN) == 0) {
+ if (i->enabled)
+ return GL_TRUE;
+ else
+ return GL_FALSE;
+ }
+
+ return GL_FALSE;
+}
+
+
void gl_extensions_dtr( GLcontext *ctx )
{
struct extension *i, *nexti;
if (ctx->Extensions.ext_string) {
- free( 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 );
+ remove_from_list( i );
+ FREE( i );
}
- free(ctx->Extensions.ext_list);
+ FREE(ctx->Extensions.ext_list);
ctx->Extensions.ext_list = 0;
}
}
default_extensions[i].name,
0 );
}
+ update_extension_flags(ctx);
}
if (len == 0)
return "";
- str = (char *)malloc(len * sizeof(char));
+ str = (char *)MALLOC(len * sizeof(char));
ctx->Extensions.ext_string = str;
foreach (i, ctx->Extensions.ext_list)
return ctx->Extensions.ext_string;
}
-
-