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use glBlendFuncSeparate for 50% correct dest alpha

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This commit is contained in:
Glenn Maynard
2007-02-24 13:03:35 +00:00
parent 033becc25f
commit d5542f24cf
3 changed files with 10 additions and 1 deletions
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stepmania/src/RageDisplay_OGL.cpp
+6 -1
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@@ -1596,6 +1596,7 @@ void RageDisplay_OGL::SetBlendMode( BlendMode mode )
}
int iSourceRGB, iDestRGB;
int iSourceAlpha = GL_ONE, iDestAlpha = GL_ONE_MINUS_SRC_ALPHA;
switch( mode )
{
case BLEND_NORMAL:
@@ -1615,11 +1616,15 @@ void RageDisplay_OGL::SetBlendMode( BlendMode mode )
break;
case BLEND_NO_EFFECT:
iSourceRGB = GL_ZERO; iDestRGB = GL_ONE;
iSourceAlpha = GL_ZERO; iSourceAlpha = GL_ONE;
break;
DEFAULT_FAIL( mode );
}
glBlendFunc( iSourceRGB, iDestRGB );
if( GLExt.glBlendFuncSeparate != NULL )
GLExt.glBlendFuncSeparate( iSourceRGB, iDestRGB, iSourceAlpha, iDestAlpha );
else
glBlendFunc( iSourceRGB, iDestRGB );
}
bool RageDisplay_OGL::IsZWriteEnabled() const