diff options
Diffstat (limited to 'indra/llrender/llgl.cpp')
| -rw-r--r-- | indra/llrender/llgl.cpp | 70 |
1 files changed, 66 insertions, 4 deletions
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp index 10315bacf1..97019d48c4 100644 --- a/indra/llrender/llgl.cpp +++ b/indra/llrender/llgl.cpp @@ -185,6 +185,9 @@ PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC glRenderbufferStorageMultisampleEXT = // GL_EXT_framebuffer_blit PFNGLBLITFRAMEBUFFEREXTPROC glBlitFramebufferEXT = NULL; +// GL_EXT_blend_func_separate +PFNGLBLENDFUNCSEPARATEEXTPROC glBlendFuncSeparateEXT = NULL; + // GL_ARB_draw_buffers PFNGLDRAWBUFFERSARBPROC glDrawBuffersARB = NULL; @@ -324,6 +327,7 @@ LLGLManager::LLGLManager() : mHasCompressedTextures(FALSE), mHasFramebufferObject(FALSE), mHasFramebufferMultisample(FALSE), + mHasBlendFuncSeparate(FALSE), mHasVertexBufferObject(FALSE), mHasPBuffer(FALSE), @@ -332,6 +336,8 @@ LLGLManager::LLGLManager() : mHasFragmentShader(FALSE), mHasOcclusionQuery(FALSE), mHasPointParameters(FALSE), + mHasDrawBuffers(FALSE), + mHasTextureRectangle(FALSE), mHasAnisotropic(FALSE), mHasARBEnvCombine(FALSE), @@ -593,8 +599,6 @@ void LLGLManager::shutdownGL() // these are used to turn software blending on. They appear in the Debug/Avatar menu // presence of vertex skinning/blending or vertex programs will set these to FALSE by default. -extern LLCPUInfo gSysCPU; - void LLGLManager::initExtensions() { #if LL_MESA_HEADLESS @@ -633,6 +637,11 @@ void LLGLManager::initExtensions() #else mHasDrawBuffers = FALSE; # endif +# if GL_EXT_blend_func_separate + mHasBlendFuncSeparate = TRUE; +#else + mHasBlendFuncSeparate = FALSE; +# endif mHasMipMapGeneration = FALSE; mHasSeparateSpecularColor = FALSE; mHasAnisotropic = FALSE; @@ -659,6 +668,7 @@ void LLGLManager::initExtensions() && ExtensionExists("GL_EXT_packed_depth_stencil", gGLHExts.mSysExts); mHasFramebufferMultisample = mHasFramebufferObject && ExtensionExists("GL_EXT_framebuffer_multisample", gGLHExts.mSysExts); mHasDrawBuffers = ExtensionExists("GL_ARB_draw_buffers", gGLHExts.mSysExts); + mHasBlendFuncSeparate = ExtensionExists("GL_EXT_blend_func_separate", gGLHExts.mSysExts); mHasTextureRectangle = ExtensionExists("GL_ARB_texture_rectangle", gGLHExts.mSysExts); #if !LL_DARWIN mHasPointParameters = !mIsATI && ExtensionExists("GL_ARB_point_parameters", gGLHExts.mSysExts); @@ -673,7 +683,7 @@ void LLGLManager::initExtensions() llinfos << "initExtensions() checking shell variables to adjust features..." << llendl; // Our extension support for the Linux Client is very young with some // potential driver gotchas, so offer a semi-secret way to turn it off. - if (getenv("LL_GL_NOEXT")) /* Flawfinder: ignore */ + if (getenv("LL_GL_NOEXT")) { //mHasMultitexture = FALSE; // NEEDED! mHasARBEnvCombine = FALSE; @@ -682,6 +692,7 @@ void LLGLManager::initExtensions() mHasFramebufferObject = FALSE; mHasFramebufferMultisample = FALSE; mHasDrawBuffers = FALSE; + mHasBlendFuncSeparate = FALSE; mHasMipMapGeneration = FALSE; mHasSeparateSpecularColor = FALSE; mHasAnisotropic = FALSE; @@ -706,6 +717,7 @@ void LLGLManager::initExtensions() mHasShaderObjects = FALSE; mHasVertexShader = FALSE; mHasFragmentShader = FALSE; + mHasBlendFuncSeparate = FALSE; LL_WARNS("RenderInit") << "GL extension support forced to SIMPLE level via LL_GL_BASICEXT" << LL_ENDL; } if (getenv("LL_GL_BLACKLIST")) /* Flawfinder: ignore */ @@ -734,7 +746,8 @@ void LLGLManager::initExtensions() if (strchr(blacklist,'r')) mHasDrawBuffers = FALSE;//S if (strchr(blacklist,'s')) mHasFramebufferMultisample = FALSE; if (strchr(blacklist,'t')) mHasTextureRectangle = FALSE; - + if (strchr(blacklist,'u')) mHasBlendFuncSeparate = FALSE;//S + } #endif // LL_LINUX || LL_SOLARIS @@ -782,6 +795,14 @@ void LLGLManager::initExtensions() { LL_INFOS("RenderInit") << "Couldn't initialize GL_ARB_fragment_shader" << LL_ENDL; } + if (!mHasBlendFuncSeparate) + { + LL_INFOS("RenderInit") << "Couldn't initialize GL_EXT_blend_func_separate" << LL_ENDL; + } + if (!mHasDrawBuffers) + { + LL_INFOS("RenderInit") << "Couldn't initialize GL_ARB_draw_buffers" << LL_ENDL; + } // Disable certain things due to known bugs if (mIsIntel && mHasMipMapGeneration) @@ -852,6 +873,10 @@ void LLGLManager::initExtensions() { glDrawBuffersARB = (PFNGLDRAWBUFFERSARBPROC) GLH_EXT_GET_PROC_ADDRESS("glDrawBuffersARB"); } + if (mHasBlendFuncSeparate) + { + glBlendFuncSeparateEXT = (PFNGLBLENDFUNCSEPARATEEXTPROC) GLH_EXT_GET_PROC_ADDRESS("glBlendFuncSeparateEXT"); + } #if (!LL_LINUX && !LL_SOLARIS) || LL_LINUX_NV_GL_HEADERS // This is expected to be a static symbol on Linux GL implementations, except if we use the nvidia headers - bah glDrawRangeElements = (PFNGLDRAWRANGEELEMENTSPROC)GLH_EXT_GET_PROC_ADDRESS("glDrawRangeElements"); @@ -1921,6 +1946,16 @@ LLGLDepthTest::LLGLDepthTest(GLboolean depth_enabled, GLboolean write_enabled, G : mPrevDepthEnabled(sDepthEnabled), mPrevDepthFunc(sDepthFunc), mPrevWriteEnabled(sWriteEnabled) { stop_glerror(); + + checkState(); + + if (!depth_enabled) + { // always disable depth writes if depth testing is disabled + // GL spec defines this as a requirement, but some implementations allow depth writes with testing disabled + // The proper way to write to depth buffer with testing disabled is to enable testing and use a depth_func of GL_ALWAYS + write_enabled = FALSE; + } + if (depth_enabled != sDepthEnabled) { gGL.flush(); @@ -1944,6 +1979,7 @@ LLGLDepthTest::LLGLDepthTest(GLboolean depth_enabled, GLboolean write_enabled, G LLGLDepthTest::~LLGLDepthTest() { + checkState(); if (sDepthEnabled != mPrevDepthEnabled ) { gGL.flush(); @@ -1965,6 +2001,32 @@ LLGLDepthTest::~LLGLDepthTest() } } +void LLGLDepthTest::checkState() +{ + if (gDebugGL) + { + GLint func = 0; + GLboolean mask = FALSE; + + glGetIntegerv(GL_DEPTH_FUNC, &func); + glGetBooleanv(GL_DEPTH_WRITEMASK, &mask); + + if (glIsEnabled(GL_DEPTH_TEST) != sDepthEnabled || + sWriteEnabled != mask || + sDepthFunc != func) + { + if (gDebugSession) + { + gFailLog << "Unexpected depth testing state." << std::endl; + } + else + { + LL_GL_ERRS << "Unexpected depth testing state." << LL_ENDL; + } + } + } +} + LLGLClampToFarClip::LLGLClampToFarClip(glh::matrix4f P) { for (U32 i = 0; i < 4; i++) |