Fix clamping depth output to [0, 1] range.

src/Shader/PixelPipeline.cpp

@@ -256,15 +256,15 @@ namespace sw
 				}
 			}
 		}
-	}
 
-	Bool PixelPipeline::alphaTest(Int cMask[4])
-	{
 		current.x = Min(current.x, Short4(0x0FFF)); current.x = Max(current.x, Short4(0x0000));
 		current.y = Min(current.y, Short4(0x0FFF)); current.y = Max(current.y, Short4(0x0000));
 		current.z = Min(current.z, Short4(0x0FFF)); current.z = Max(current.z, Short4(0x0000));
 		current.w = Min(current.w, Short4(0x0FFF)); current.w = Max(current.w, Short4(0x0000));
+	}
 
+	Bool PixelPipeline::alphaTest(Int cMask[4])
+	{
 		if(!state.alphaTestActive())
 		{
 			return true;

src/Shader/PixelProgram.cpp

@@ -525,12 +525,17 @@ namespace sw
 				c[i] = oC[i];
 			}
 		}
+
+		clampColor(c);
+
+		if(state.depthOverride)
+		{
+			oDepth = Min(Max(oDepth, Float4(0.0f)), Float4(1.0f));
+		}
 	}
 
 	Bool PixelProgram::alphaTest(Int cMask[4])
 	{
-		clampColor(c);
-
 		if(!state.alphaTestActive())
 		{
 			return true;