Hack to fix ATI depth shadows screwing up alpha masking.

1 files changed, 5 insertions, 4 deletions

diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index bd210b3376..02dc013ca4 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -572,9 +572,12 @@ void LLPipeline::allocateScreenBuffer(U32 resX, U32 resY)
 
 		F32 scale = gSavedSettings.getF32("RenderShadowResolutionScale");
 
+		//HACK: make alpha masking work on ATI depth shadows (work around for ATI driver bug)
+		U32 shadow_fmt = gGLManager.mIsATI ? GL_ALPHA : 0;
+
 		for (U32 i = 0; i < 4; i++)
 		{
-			mShadow[i].allocate(U32(resX*scale),U32(resY*scale), 0, TRUE, FALSE, LLTexUnit::TT_RECT_TEXTURE);
+			mShadow[i].allocate(U32(resX*scale),U32(resY*scale), shadow_fmt, TRUE, FALSE, LLTexUnit::TT_RECT_TEXTURE);
 		}
 
 
@@ -583,11 +586,9 @@ void LLPipeline::allocateScreenBuffer(U32 resX, U32 resY)
 
 		for (U32 i = 4; i < 6; i++)
 		{
-			mShadow[i].allocate(width, height, 0, TRUE, FALSE);
+			mShadow[i].allocate(width, height, shadow_fmt, TRUE, FALSE);
 		}
 
-
-
 		width = nhpo2(resX)/2;
 		height = nhpo2(resY)/2;
 		mLuminanceMap.allocate(width,height, GL_RGBA, FALSE, FALSE);