Problem when I pass UTexture2D to pixel shader

Development Programming & Scripting C++
1

Hello, I recently followed Temaran’s tutorial (GitHub - Temaran/UE4ShaderPluginDemo: A tutorial project that shows how to implement HLSL Pixel and Co) for Shader in UE4. Actually I try to pass a UTexture2D (I don’t create this texture during Runtime) to Shader then I convert in FRHITexture via UTexture2D->Resource->TextureRHI.

Here is my Pixel shader :



Texture2D texturesample;
SamplerState mySampler;
float4 myColor;

float4 mainPS(in float2 UV: TEXCOORD0) : SV_TARGET0
{

    float4 packedValue = texturesample.Sample(mySampler, UV);
    if(packedValue.x > 0.0)
        return float4(1,0,0,0);
    return myColor;
}

Shader’s parameters are similar with tamaran I just added FRHISamplerState.

My Project crash if I click on Play. This error seems to be caused by if(packedValue.x > 0.0) .
Is it caused by conversion between UTexture2D to FRHITexture ?

2
  • bump * * bump *