mirrors/dolphin
0
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-07-28 19:58:53 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Implement dual source blending to avoid unneeded alpha pass.

Browse source 
this implementation does not work in windows xp (sorry no support for dual source blending there).
this should improve speed on older hardware or in newer hardware using super sampling.
disable partial fix for 4x supersampling as I'm interested in knowing the original issue with the implementation to fix it correctly.
remove the deprecation label from the plugin while I'm working on it.
This commit is contained in:
Rodolfo Bogado 2013-03-28 20:08:51 -03:00
commit 40d919b352
5 changed files with 92 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

11
Source/Plugins/Plugin_VideoDX9/Src/VertexManager.cpp
View file

@ -361,7 +361,12 @@ void VertexManager::vFlush()
VertexShaderManager::SetConstants();
PixelShaderManager::SetConstants();
u32 stride = g_nativeVertexFmt->GetVertexStride();
if (!PixelShaderCache::SetShader(DSTALPHA_NONE,g_nativeVertexFmt->m_components))
bool useDstAlpha = !g_ActiveConfig.bDstAlphaPass && bpmem.dstalpha.enable && bpmem.blendmode.alphaupdate &&
bpmem.zcontrol.pixel_format == PIXELFMT_RGBA6_Z24;
bool useDualSource = useDstAlpha && g_ActiveConfig.backend_info.bSupportsDualSourceBlend;
DSTALPHA_MODE AlphaMode = useDualSource ? DSTALPHA_DUAL_SOURCE_BLEND : DSTALPHA_NONE;
if (!PixelShaderCache::SetShader(AlphaMode ,g_nativeVertexFmt->m_components))
{
GFX_DEBUGGER_PAUSE_LOG_AT(NEXT_ERROR,true,{printf("Fail to set pixel shader\n");});
goto shader_fail;
@ -383,9 +388,7 @@ void VertexManager::vFlush()
DrawVertexArray(stride);
}
bool useDstAlpha = !g_ActiveConfig.bDstAlphaPass && bpmem.dstalpha.enable && bpmem.blendmode.alphaupdate &&
bpmem.zcontrol.pixel_format == PIXELFMT_RGBA6_Z24;
if (useDstAlpha)
if (useDstAlpha && !useDualSource)
{
if (!PixelShaderCache::SetShader(DSTALPHA_ALPHA_PASS, g_nativeVertexFmt->m_components))
{