Steve Pham
38261d0800
* Updated all copyright headers to split the longer original copyright line into 2 shorter lines Signed-off-by: Steve Pham <spham@amazon.com>
28 lines
914 B
Plaintext
28 lines
914 B
Plaintext
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#include <Atom/RPI/Math.azsli>
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float4 ReconstructWorldPositionFromDepth(float2 screenCoords, uint sampleIndex)
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{
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float depth = PassSrg::m_depth.Load(screenCoords, sampleIndex).r;
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uint2 dimensions;
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uint samples;
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PassSrg::m_depth.GetDimensions(dimensions.x, dimensions.y, samples);
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float2 UV = saturate(screenCoords / dimensions.xy);
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float x = UV.x * 2.0f - 1.0f;
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float y = (1.0f - UV.y) * 2.0f - 1.0f;
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float4 projectedPos = float4(x, y, depth, 1.0f);
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float4 positionVS = mul(ViewSrg::m_projectionMatrixInverse, projectedPos);
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positionVS /= positionVS.w;
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float4 positionWS = mul(ViewSrg::m_viewMatrixInverse, positionVS);
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return positionWS;
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}
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