Add support for glBlendFuncSeparate().

I want it to fix glow-through-alpha, but this checkin doesn't includes any of those changes.

1 files changed, 8 insertions, 2 deletions

diff --git a/indra/llrender/llrender.h b/indra/llrender/llrender.h
index a73a128368..3cda4b5770 100644
--- a/indra/llrender/llrender.h
+++ b/indra/llrender/llrender.h
@@ -323,7 +323,11 @@ public:
 
 	void setAlphaRejectSettings(eCompareFunc func, F32 value = 0.01f);
 
+	// applies blend func to both color and alpha
 	void blendFunc(eBlendFactor sfactor, eBlendFactor dfactor);
+	// applies separate blend functions to color and alpha
+	void blendFunc(eBlendFactor color_sfactor, eBlendFactor color_dfactor,
+		       eBlendFactor alpha_sfactor, eBlendFactor alpha_dfactor);
 
 	LLTexUnit* getTexUnit(U32 index);
 
@@ -362,8 +366,10 @@ private:
 	std::vector<LLTexUnit*>		mTexUnits;
 	LLTexUnit*			mDummyTexUnit;
 
-	eBlendFactor mCurrBlendSFactor;
-	eBlendFactor mCurrBlendDFactor;
+	eBlendFactor mCurrBlendColorSFactor;
+	eBlendFactor mCurrBlendColorDFactor;
+	eBlendFactor mCurrBlendAlphaSFactor;
+	eBlendFactor mCurrBlendAlphaDFactor;
 	F32				mMaxAnisotropy;
 
 	std::list<LLVector3> mUIOffset;