You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
1.7 KiB
Plaintext
60 lines
1.7 KiB
Plaintext
/*
|
|
* Copyright (c) Contributors to the Open 3D Engine Project.
|
|
* For complete copyright and license terms please see the LICENSE at the root of this distribution.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0 OR MIT
|
|
*
|
|
*/
|
|
|
|
#include <Atom/Features/SrgSemantics.azsli>
|
|
|
|
ShaderResourceGroup PassSrg : SRG_PerPass
|
|
{
|
|
Texture2D<float> m_modifier;
|
|
RWTexture2D<float4> m_inputOutput;
|
|
|
|
Sampler LinearSampler
|
|
{
|
|
MinFilter = Linear;
|
|
MagFilter = Linear;
|
|
MipFilter = Linear;
|
|
AddressU = Clamp;
|
|
AddressV = Clamp;
|
|
AddressW = Clamp;
|
|
};
|
|
}
|
|
|
|
[numthreads(16,16,1)]
|
|
void MainCS(uint3 dispatch_id: SV_DispatchThreadID)
|
|
{
|
|
// Get output texture dimensions
|
|
uint2 outputDimensions;
|
|
PassSrg::m_inputOutput.GetDimensions(outputDimensions.x, outputDimensions.y);
|
|
uint2 outPixel = dispatch_id.xy;
|
|
|
|
// Early out
|
|
if(outPixel.x >= outputDimensions.x || outPixel.y >= outputDimensions.y)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// Calculate the size of a pixel in screen UV space
|
|
float2 pixelSize = 1.0f / float2(outputDimensions.xy);
|
|
|
|
// Want to sample at the center of the pixel, so we need a half pixel offset
|
|
float2 halfPixelSize = pixelSize * 0.5f;
|
|
|
|
// Sample the modifier texture
|
|
float2 sampleUV = mad(float2(outPixel.xy), pixelSize, halfPixelSize);
|
|
float modifier = PassSrg::m_modifier.SampleLevel(PassSrg::LinearSampler, sampleUV, 0).r;
|
|
|
|
// Sample the output target
|
|
float4 sampleColor = PassSrg::m_inputOutput[outPixel].rgba;
|
|
|
|
// Apply the modifer as a simple multiplier
|
|
sampleColor.rgb *= modifier.xxx;
|
|
|
|
// Write the modified value to the target
|
|
PassSrg::m_inputOutput[outPixel] = sampleColor;
|
|
}
|