ATOM-15391 [RHI][Vulkan][Android] SSAO introduces horizontal lines on flat surfaces

2021-05-03 20:23:03 -07:00
parent edf8ab4822
commit 837458abf2
1 changed files with 2 additions and 0 deletions
@@ -277,6 +277,8 @@ void MainCS(uint3 thread_id : SV_GroupThreadID, uint3 group_id : SV_GroupID, uin

        // Gather depth values
        float2 depthGatherUV = mad(float2(ldsPosition), GetPixelSize(), ldsOffsetUV);
+        // Gather on some GPUs will fall onto same pixels in adjacent coordinates due to rounding errors
+        depthGatherUV += GetHalfPixelSize();
        float4 depthGather = PassSrg::m_linearDepth.Gather(PassSrg::PointSampler, depthGatherUV);

        WriteDepthGatherToLDS(ldsPosition, depthGather);