Fixed using pixel shader constants in pixel shaders instead of vertex shader constants, for relative addressing.

src/Shader/PixelRoutine.cpp

diff --git a/src/Shader/PixelRoutine.cpp b/src/Shader/PixelRoutine.cpp
index 1dd429e..2528a9c 100644
--- a/src/Shader/PixelRoutine.cpp
+++ b/src/Shader/PixelRoutine.cpp
@@ -5801,7 +5801,7 @@
 		}
 		else if(var.rel.type == Shader::PARAMETER_CONST)
 		{
-			RValue<Float4> c = *Pointer<Float4>(r.data + OFFSET(DrawData,vs.c[var.rel.index]));
+			RValue<Float4> c = *Pointer<Float4>(r.data + OFFSET(DrawData,ps.c[var.rel.index]));
 
 			return RoundInt(Extract(c, 0)) * var.rel.scale;
 		}