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Grok EFB pixel format to determine whether render target has alpha, thus fixing the "Stage Clear" screen in SSBM.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3588 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Nolan Check
2009-06-29 00:52:54 +00:00
parent 07a767691d
commit 5717f1f15b
3 changed files with 18 additions and 2 deletions
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7
Source/Plugins/Plugin_VideoOGL/Src/BPFunctions.cpp
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@ -156,10 +156,15 @@ void ClearScreen(const Bypass &bp, const TRectangle &multirc)
if (bpmem.blendmode.colorupdate || bpmem.blendmode.alphaupdate)
{
u32 clearColor = (bpmem.clearcolorAR << 16) | bpmem.clearcolorGB;
// Alpha may or may not be present depending on the EFB pixel format.
GLclampf clearAlpha = (bpmem.zcontrol.pixel_format == PIXELFMT_RGBA6_Z24) ?
((clearColor>>24) & 0xff)*(1/255.0f) : 1.0f;
glClearColor(((clearColor>>16) & 0xff)*(1/255.0f),
((clearColor>>8 ) & 0xff)*(1/255.0f),
((clearColor>>0 ) & 0xff)*(1/255.0f),
((clearColor>>24) & 0xff)*(1/255.0f));
clearAlpha);
bits |= GL_COLOR_BUFFER_BIT;
}
if (bpmem.zmode.updateenable)