diff --git a/WickedEngine/shaders/sharpenCS.hlsl b/WickedEngine/shaders/sharpenCS.hlsl
index 9889e0745..8895655d6 100644
--- a/WickedEngine/shaders/sharpenCS.hlsl
+++ b/WickedEngine/shaders/sharpenCS.hlsl
@@ -10,11 +10,13 @@ RWTexture2D<float4> output : register(u0);
 [numthreads(POSTPROCESS_BLOCKSIZE, POSTPROCESS_BLOCKSIZE, 1)]
 void main(uint3 DTid : SV_DispatchThreadID)
 {
-	float4 center = input[DTid.xy + int2(0, 0)];
-	float4 top =	input[DTid.xy + int2(0, -1)];
-	float4 left =	input[DTid.xy + int2(-1, 0)];
-	float4 right =	input[DTid.xy + int2(1, 0)];
-	float4 bottom = input[DTid.xy + int2(0, 1)];
+	const float2 uv = (DTid.xy + 0.5f) * postprocess.resolution_rcp;
+	
+	float4 center = input.SampleLevel(sampler_linear_clamp, uv, 0);
+	float4 top =    input.SampleLevel(sampler_linear_clamp, uv + float2(0, -1) * postprocess.resolution_rcp, 0);
+	float4 left =   input.SampleLevel(sampler_linear_clamp, uv + float2(-1, 0) * postprocess.resolution_rcp, 0);
+	float4 right =  input.SampleLevel(sampler_linear_clamp, uv + float2(1, 0) * postprocess.resolution_rcp, 0);
+	float4 bottom = input.SampleLevel(sampler_linear_clamp, uv + float2(0, 1) * postprocess.resolution_rcp, 0);
 
 	output[DTid.xy] = center + (4 * center - top - bottom - left - right) * postprocess.params0[0];
 }