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OGL: Fall back to the old dual-source blending behaviour.

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This commit is contained in:
Jules Blok 2016-10-29 17:24:10 +02:00
commit ce9f717045
2 changed files with 15 additions and 14 deletions
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7
Source/Core/VideoBackends/OGL/Render.cpp
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@ -445,8 +445,7 @@ Renderer::Renderer()
g_Config.backend_info.bSupportsDualSourceBlend =
(GLExtensions::Supports("GL_ARB_blend_func_extended") ||
GLExtensions::Supports("GL_EXT_blend_func_extended")) &&
!DriverDetails::HasBug(DriverDetails::BUG_BROKEN_DUAL_SOURCE_BLENDING);
GLExtensions::Supports("GL_EXT_blend_func_extended"));
g_Config.backend_info.bSupportsPrimitiveRestart =
!DriverDetails::HasBug(DriverDetails::BUG_PRIMITIVERESTART) &&
((GLExtensions::Version() >= 310) || GLExtensions::Supports("GL_NV_primitive_restart"));
@ -1244,6 +1243,10 @@ void Renderer::SetBlendMode(bool forceUpdate)
bool useDstAlpha = bpmem.dstalpha.enable && bpmem.blendmode.alphaupdate && target_has_alpha;
bool useDualSource = g_ActiveConfig.backend_info.bSupportsDualSourceBlend;
// Only use dual-source blending when required on drivers that don't support it very well.
if (DriverDetails::HasBug(DriverDetails::BUG_BROKEN_DUAL_SOURCE_BLENDING) && !useDstAlpha)
useDualSource = false;
const GLenum glSrcFactors[8] = {
GL_ZERO,
GL_ONE,