/*
* Mesa 3-D graphics library
- * Version: 7.3
+ * 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"),
const char *name;
int flag_offset;
} default_extensions[] = {
+ { OFF, "GL_ARB_copy_buffer", F(ARB_copy_buffer) },
{ OFF, "GL_ARB_depth_texture", F(ARB_depth_texture) },
{ ON, "GL_ARB_draw_buffers", F(ARB_draw_buffers) },
{ OFF, "GL_ARB_fragment_program", F(ARB_fragment_program) },
{ OFF, "GL_ARB_framebuffer_object", F(ARB_framebuffer_object) },
{ OFF, "GL_ARB_half_float_pixel", F(ARB_half_float_pixel) },
{ OFF, "GL_ARB_imaging", F(ARB_imaging) },
+ { OFF, "GL_ARB_map_buffer_range", F(ARB_map_buffer_range) },
{ ON, "GL_ARB_multisample", F(ARB_multisample) },
{ OFF, "GL_ARB_multitexture", F(ARB_multitexture) },
{ OFF, "GL_ARB_occlusion_query", F(ARB_occlusion_query) },
void
_mesa_enable_sw_extensions(GLcontext *ctx)
{
+ ctx->Extensions.ARB_copy_buffer = GL_TRUE;
ctx->Extensions.ARB_depth_texture = GL_TRUE;
/*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
#if FEATURE_ARB_fragment_program
#endif
ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
ctx->Extensions.ARB_imaging = GL_TRUE;
+ ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
ctx->Extensions.ARB_multitexture = GL_TRUE;
#if FEATURE_ARB_occlusion_query
ctx->Extensions.ARB_occlusion_query = GL_TRUE;
/**
* Either enable or disable the named extension.
+ * \return GL_TRUE for success, GL_FALSE if invalid extension name
*/
-static void
+static GLboolean
set_extension( GLcontext *ctx, const char *name, GLboolean state )
{
GLboolean *base = (GLboolean *) &ctx->Extensions;
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;
+ return GL_FALSE;
}
for (i = 0 ; i < Elements(default_extensions) ; i++) {
GLboolean *enabled = base + default_extensions[i].flag_offset;
*enabled = state;
}
- return;
+ return GL_TRUE;
}
}
- _mesa_problem(ctx, "Trying to enable unknown extension: %s", name);
+ return GL_FALSE;
}
void
_mesa_enable_extension( GLcontext *ctx, const char *name )
{
- set_extension(ctx, name, GL_TRUE);
+ if (!set_extension(ctx, name, GL_TRUE))
+ _mesa_problem(ctx, "Trying to enable unknown extension: %s", name);
}
void
_mesa_disable_extension( GLcontext *ctx, const char *name )
{
- set_extension(ctx, name, GL_FALSE);
+ if (!set_extension(ctx, name, GL_FALSE))
+ _mesa_problem(ctx, "Trying to disable unknown extension: %s", name);
}
/**
+ * Append string 'b' onto string 'a'. Free 'a' and return new string.
+ */
+static char *
+append(const char *a, const char *b)
+{
+ const GLuint aLen = a ? _mesa_strlen(a) : 0;
+ const GLuint bLen = b ? _mesa_strlen(b) : 0;
+ char *s = _mesa_calloc(aLen + bLen + 1);
+ if (s) {
+ if (a)
+ _mesa_memcpy(s, a, aLen);
+ if (b)
+ _mesa_memcpy(s + aLen, b, bLen);
+ s[aLen + bLen] = '\0';
+ }
+ if (a)
+ _mesa_free((void *) a);
+ return s;
+}
+
+
+/**
+ * Check the MESA_EXTENSION_OVERRIDE env var.
+ * For extension names that are recognized, turn them on. For extension
+ * names that are recognized and prefixed with '-', turn them off.
+ * Return a string of the unknown/leftover names.
+ */
+static const char *
+get_extension_override( GLcontext *ctx )
+{
+ const char *envExt = _mesa_getenv("MESA_EXTENSION_OVERRIDE");
+ char *extraExt = NULL;
+ char ext[1000];
+ GLuint extLen = 0;
+ GLuint i;
+ GLboolean disableExt = GL_FALSE;
+
+ if (!envExt)
+ return NULL;
+
+ for (i = 0; ; i++) {
+ if (envExt[i] == '\0' || envExt[i] == ' ') {
+ /* terminate/process 'ext' if extLen > 0 */
+ if (extLen > 0) {
+ assert(extLen < sizeof(ext));
+ /* enable extension named by 'ext' */
+ ext[extLen] = 0;
+ if (!set_extension(ctx, ext, !disableExt)) {
+ /* unknown extension name, append it to extraExt */
+ if (extraExt) {
+ extraExt = append(extraExt, " ");
+ }
+ extraExt = append(extraExt, ext);
+ }
+ extLen = 0;
+ disableExt = GL_FALSE;
+ }
+ if (envExt[i] == '\0')
+ break;
+ }
+ else if (envExt[i] == '-') {
+ disableExt = GL_TRUE;
+ }
+ else {
+ /* accumulate this non-space character */
+ ext[extLen++] = envExt[i];
+ }
+ }
+
+ return extraExt;
+}
+
+
+/**
* Run through the default_extensions array above and set the
* ctx->Extensions.ARB/EXT_* flags accordingly.
* To be called during context initialization.
_mesa_make_extension_string( GLcontext *ctx )
{
const GLboolean *base = (const GLboolean *) &ctx->Extensions;
+ const char *extraExt = get_extension_override(ctx);
GLuint extStrLen = 0;
- GLubyte *s;
+ char *s;
GLuint i;
/* first, compute length of the extension string */
extStrLen += (GLuint)_mesa_strlen(default_extensions[i].name) + 1;
}
}
- s = (GLubyte *) _mesa_malloc(extStrLen);
+
+ if (extraExt)
+ extStrLen += _mesa_strlen(extraExt) + 1; /* +1 for space */
+
+ /* allocate the extension string */
+ s = (char *) _mesa_malloc(extStrLen);
+ if (!s)
+ return NULL;
/* second, build the extension string */
extStrLen = 0;
GLuint len = (GLuint)_mesa_strlen(default_extensions[i].name);
_mesa_memcpy(s + extStrLen, default_extensions[i].name, len);
extStrLen += len;
- s[extStrLen] = (GLubyte) ' ';
+ s[extStrLen] = ' ';
extStrLen++;
}
}
ASSERT(extStrLen > 0);
- s[extStrLen - 1] = 0;
+ s[extStrLen - 1] = 0; /* -1 to overwrite trailing the ' ' */
- return s;
+ if (extraExt) {
+ s = append(s, " ");
+ s = append(s, extraExt);
+ }
+
+ return (GLubyte *) s;
}
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