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special-case check for '1.2 (1.5 Mesa 6.4.2)'

This commit is contained in:
David Rose 2007-07-11 18:04:42 +00:00
parent 17e4c14237
commit 086a32f42a
1 changed files with 17 additions and 2 deletions
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19
panda/src/glstuff/glGraphicsStateGuardian_src.cxx
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@ -49,6 +49,7 @@
#include "mutexHolder.h"
#include "indirectLess.h"
#include "pStatTimer.h"
#include "load_prc_file.h"
#ifdef HAVE_CG
#include "Cg/cgGL.h"
@ -4334,7 +4335,9 @@ query_gl_version() {
GLCAT.debug()
<< "Unable to query GL_VERSION\n";
} else {
string input((const char *)text);
string version((const char *)text);
string input = version;
size_t space = input.find(' ');
if (space != string::npos) {
input = input.substr(0, space);
@ -4354,10 +4357,22 @@ query_gl_version() {
if (GLCAT.is_debug()) {
GLCAT.debug()
<< "GL_VERSION = " << (const char *)text << ", decoded to "
<< "GL_VERSION = " << version << ", decoded to "
<< _gl_version_major << "." << _gl_version_minor
<< "." << _gl_version_release << "\n";
}
if (version == "1.2 (1.5 Mesa 6.4.2)") {
// We suspect this particular version of Mesa, which appears to
// be installed by default on every Linux implementation, has
// real problems rendering with vertex arrays. Therefore,
// disable vertex arrays by default.
GLCAT.debug()
<< "Buggy Mesa version detected; vertex array support is doubted.\n";
if (!vertex_arrays.has_value()) {
load_prc_file_data("mesa-hack", "vertex-arrays 0");
}
}
}
}