diff options
| author | Dave Parks <davep@lindenlab.com> | 2011-03-10 00:41:46 -0600 |
|---|---|---|
| committer | Dave Parks <davep@lindenlab.com> | 2011-03-10 00:41:46 -0600 |
| commit | 5fd953df8fafb769d31688c47cf3f8634f858de5 (patch) | |
| tree | 7a0f38e57a4132e78f5e1e61dd316adec7e6355a /indra/llrender/llgl.cpp | |
| parent | d46594bf714cd19ebcbf693463c4d39e4c771bb8 (diff) | |
SH-874 Properly detect available video memory on ATI cards and disable vertex buffer objects when available vram is under 256MB.
Diffstat (limited to 'indra/llrender/llgl.cpp')
| -rw-r--r-- | indra/llrender/llgl.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp index 9354373dba..d1eb4c8be0 100644 --- a/indra/llrender/llgl.cpp +++ b/indra/llrender/llgl.cpp @@ -313,6 +313,7 @@ LLGLManager::LLGLManager() : mIsDisabled(FALSE), mHasMultitexture(FALSE), + mHasATIMemInfo(FALSE), mNumTextureUnits(1), mHasMipMapGeneration(FALSE), mHasCompressedTextures(FALSE), @@ -497,6 +498,14 @@ bool LLGLManager::initGL() // This is called here because it depends on the setting of mIsGF2or4MX, and sets up mHasMultitexture. initExtensions(); + if (mHasATIMemInfo) + { //ask the gl how much vram is free at startup and attempt to use no more than half of that + S32 meminfo[4]; + glGetIntegerv(GL_TEXTURE_FREE_MEMORY_ATI, meminfo); + + mVRAM = meminfo[0]/1024; + } + if (mHasMultitexture) { GLint num_tex_units; @@ -659,6 +668,7 @@ void LLGLManager::initExtensions() mHasTextureRectangle = FALSE; #else // LL_MESA_HEADLESS mHasMultitexture = glh_init_extensions("GL_ARB_multitexture"); + mHasATIMemInfo = ExtensionExists("GL_ATI_meminfo", gGLHExts.mSysExts); mHasMipMapGeneration = glh_init_extensions("GL_SGIS_generate_mipmap"); mHasSeparateSpecularColor = glh_init_extensions("GL_EXT_separate_specular_color"); mHasAnisotropic = glh_init_extensions("GL_EXT_texture_filter_anisotropic"); |