Skip half-pixel shift on pre-transformed coordinates.

Bug 22624951 Change-Id: Ibda5f528212c9a8d503d8d6366cd7a42cd832c89 Reviewed-on: https://swiftshader-review.googlesource.com/3742Tested-by: Nicolas Capens <capn@google.com> Reviewed-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <capn@google.com>

Skip half-pixel shift on pre-transformed coordinates.
887bc44f · Nicolas Capens · 35227c81 · 887bc44f
Commit 887bc44f authored Jul 21, 2015 by Nicolas Capens
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VertexRoutine.cpp src/Shader/VertexRoutine.cpp +1 -1

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--- a/src/Shader/VertexRoutine.cpp
+++ b/src/Shader/VertexRoutine.cpp
@@ -476,7 +476,7 @@ namespace sw
 			r.o[pos].w = rhw;
 		}
-		if(!halfIntegerCoordinates)
+		if(!halfIntegerCoordinates && !state.preTransformed)
 		{
 			r.o[pos].x = r.o[pos].x + *Pointer<Float4>(r.data + OFFSET(DrawData,halfPixelX)) * r.o[pos].w;
 			r.o[pos].y = r.o[pos].y + *Pointer<Float4>(r.data + OFFSET(DrawData,halfPixelY)) * r.o[pos].w;