mirror of
https://github.com/reactos/reactos.git
synced 2024-07-10 14:45:06 +00:00
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/*
|
|
* Mesa 3-D graphics library
|
|
*
|
|
* Copyright (C) 2010 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"),
|
|
* 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
|
|
* THE AUTHORS 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 <precomp.h>
|
|
|
|
#include "git_sha1.h"
|
|
|
|
/**
|
|
* Override the context's GL version if the environment variable
|
|
* MESA_GL_VERSION_OVERRIDE is set. Valid values of MESA_GL_VERSION_OVERRIDE
|
|
* are point-separated version numbers, such as "3.0".
|
|
*/
|
|
static void
|
|
override_version(struct gl_context *ctx, GLuint *major, GLuint *minor)
|
|
{
|
|
const char *env_var = "MESA_GL_VERSION_OVERRIDE";
|
|
const char *version;
|
|
int n;
|
|
|
|
version = getenv(env_var);
|
|
if (!version) {
|
|
return;
|
|
}
|
|
|
|
n = sscanf(version, "%u.%u", major, minor);
|
|
if (n != 2) {
|
|
fprintf(stderr, "error: invalid value for %s: %s\n", env_var, version);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Examine enabled GL extensions to determine GL version.
|
|
* Return major and minor version numbers.
|
|
*/
|
|
static void
|
|
compute_version(struct gl_context *ctx)
|
|
{
|
|
/* report openGL 1.1 */
|
|
ctx->VersionMajor = 1;
|
|
ctx->VersionMinor = 1;
|
|
|
|
override_version(ctx, &ctx->VersionMajor, &ctx->VersionMinor);
|
|
|
|
ctx->VersionString = (char *) malloc(20);
|
|
if (ctx->VersionString) {
|
|
_mesa_snprintf(ctx->VersionString, 20,
|
|
"%u.%u Mesa " MESA_VERSION_STRING
|
|
#ifdef MESA_GIT_SHA1
|
|
" (" MESA_GIT_SHA1 ")"
|
|
#endif
|
|
,
|
|
ctx->VersionMajor, ctx->VersionMinor);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the context's VersionMajor, VersionMinor, VersionString fields.
|
|
* This should only be called once as part of context initialization
|
|
* or to perform version check for GLX_ARB_create_context_profile.
|
|
*/
|
|
void
|
|
_mesa_compute_version(struct gl_context *ctx)
|
|
{
|
|
if (ctx->VersionMajor)
|
|
return;
|
|
|
|
compute_version(ctx);
|
|
}
|