How to pass parameters to compute shader?

LenaAlthammer · January 12, 2022, 10:15am

Hi,
I am trying to pass parameters from C++ to my .usf file shader. Can anyone provide me with a code example on how to pass parameters and retrieve them in the shader?

LenaAlthammer · January 12, 2022, 2:00pm

Found what I was looking for here:

github.com

Temaran/UE4ShaderPluginDemo/blob/4.27/Plugins/TemaranShaderTutorial/Source/ShaderDeclarationDemo/Private/ComputeShaderExample.cpp

// Copyright 2016-2020 Cadic AB. All Rights Reserved.
// @Author	Fredrik Lindh [Temaran] (temaran@gmail.com) {https://github.com/Temaran}
///////////////////////////////////////////////////////////////////////////////////////

#include "ComputeShaderExample.h"
#include "ShaderParameterUtils.h"
#include "RHIStaticStates.h"
#include "Shader.h"
#include "GlobalShader.h"
#include "RenderGraphBuilder.h"
#include "RenderGraphUtils.h"
#include "ShaderParameterStruct.h"
#include "UniformBuffer.h"
#include "RHICommandList.h"

#define NUM_THREADS_PER_GROUP_DIMENSION 32

/**********************************************************************************************/
/* This class carries our parameter declarations and acts as the bridge between cpp and HLSL. */
/**********************************************************************************************/

This file has been truncated. show original

Explicitly in lines 24-31 and lines 60-68

Hope this helps someone else