merge

1 files changed, 20 insertions, 0 deletions

diff --git a/indra/newview/llface.cpp b/indra/newview/llface.cpp
index f299518474..cfe8b4c9a4 100644
--- a/indra/newview/llface.cpp
+++ b/indra/newview/llface.cpp
@@ -862,6 +862,26 @@ void LLFace::updateRebuildFlags()
 	}
 }
 
+
+bool LLFace::canRenderAsMask()
+{
+	const LLTextureEntry* te = getTextureEntry();
+	return (
+		(
+		 (LLPipeline::sRenderDeferred && LLPipeline::sAutoMaskAlphaDeferred) ||
+		 
+		 (!LLPipeline::sRenderDeferred && LLPipeline::sAutoMaskAlphaNonDeferred)		 
+		 ) // do we want masks at all?
+		&&
+		(te->getColor().mV[3] == 1.0f) && // can't treat as mask if we have face alpha
+		!(LLPipeline::sRenderDeferred && te->getFullbright()) && // hack: alpha masking renders fullbright faces invisible in deferred rendering mode, need to figure out why - for now, avoid
+		(te->getGlow() == 0.f) && // glowing masks are hard to implement - don't mask
+
+		getTexture()->getIsAlphaMask() // texture actually qualifies for masking (lazily recalculated but expensive)
+		);
+}
+
+
 static LLFastTimer::DeclareTimer FTM_FACE_GET_GEOM("Face Geom");
 
 BOOL LLFace::getGeometryVolume(const LLVolume& volume,