Fix fragments depth values not being clamped

src/Device/PixelProcessor.cpp

@@ -123,7 +123,6 @@ const PixelProcessor::State PixelProcessor::update(const Context *context) const
 	}
 
 	state.occlusionEnabled = context->occlusionEnabled;
-	state.depthClamp = (context->depthBias != 0.0f) || (context->slopeDepthBias != 0.0f);
 
 	for(int i = 0; i < RENDERTARGETS; i++)
 	{

src/Device/PixelProcessor.hpp

@@ -77,7 +77,6 @@ public:
 		bool depthTestActive;
 		bool occlusionEnabled;
 		bool perspective;
-		bool depthClamp;
 
 		BlendState blendState[RENDERTARGETS];
 

src/Pipeline/PixelRoutine.cpp

@@ -85,7 +85,7 @@ void PixelRoutine::quad(Pointer<Byte> cBuffer[RENDERTARGETS], Pointer<Byte> &zBu
 				x -= *Pointer<Float4>(constants + OFFSET(Constants, X) + q * sizeof(float4));
 			}
 
-			z[q] = interpolate(x, Dz[q], z[q], primitive + OFFSET(Primitive, z), false, false, state.depthClamp);
+			z[q] = interpolate(x, Dz[q], z[q], primitive + OFFSET(Primitive, z), false, false, true);
 		}
 	}