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workaround for buggy intel windows driver. revert this as soon as there are newer driver

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This commit is contained in:
degasus
2013-02-14 18:59:45 +01:00
parent 0325e37bfb
commit a0ef58418b
1 changed files with 15 additions and 2 deletions
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17
Source/Plugins/Plugin_VideoOGL/Src/ProgramShaderCache.cpp
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@ -488,6 +488,19 @@ void ProgramShaderCache::Shutdown(void)
void ProgramShaderCache::CreateHeader ( void ) void ProgramShaderCache::CreateHeader ( void )
{ {
#ifdef _WIN32
// Intel Windows driver has a issue:
// their glsl doesn't know about the ubo extension, so we can't load it.
// but as version 140, ubo is in core and don't have to be loaded in glsl.
// as sandy do ogl3.1, glsl 140 is supported, so force it in this way.
// TODO: remove this again when the issue is fixed:
// see http://communities.intel.com/thread/36084
u8 *vendor = glGetString(GL_VENDOR);
bool intel_windows_hack = strcmp(vendor, "Intel") == 0;
#else
bool intel_windows_hack = false;
#endif
snprintf(s_glsl_header, sizeof(s_glsl_header), snprintf(s_glsl_header, sizeof(s_glsl_header),
"#version %s\n" "#version %s\n"
"#extension GL_ARB_texture_rectangle : enable\n" "#extension GL_ARB_texture_rectangle : enable\n"
@ -510,8 +523,8 @@ void ProgramShaderCache::CreateHeader ( void )
"#define lerp(x, y, z) mix(x, y, z)\n" "#define lerp(x, y, z) mix(x, y, z)\n"
, "130" , intel_windows_hack ? "140" : "130"
, g_ActiveConfig.backend_info.bSupportsGLSLUBO ? "#extension GL_ARB_uniform_buffer_object : enable" : "// ubo disabled" , g_ActiveConfig.backend_info.bSupportsGLSLUBO && !intel_windows_hack ? "#extension GL_ARB_uniform_buffer_object : enable" : "// ubo disabled"
); );
} }