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made shader that blurs image using a 3x3 kernel

This commit is contained in:
Stedd 2023-10-08 03:27:17 +02:00
parent 6e411c2a0d
commit d5a51ad617
11 changed files with 351 additions and 13 deletions
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5
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92
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13
Assets/Scripts/ComputeController.cs
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@ -54,18 +54,19 @@ public class ComputeController : MonoBehaviour
_kernelHandle = _computeShader.FindKernel("cs_main");
_computeShader.SetTexture(_kernelHandle, SourceTexture, _inputTexture);
_computeShader.SetTexture(_kernelHandle, Result, _resultTexture);
RunComputeShader();
}
#endregion
#region Update
private void Update()
{
ShaderUpdate();
_resultMaterial.mainTexture = _resultTexture;
}
// private void Update()
// {
// ShaderUpdate();
//
// _resultMaterial.mainTexture = _resultTexture;
// }
private void ShaderUpdate()
{

38
Assets/Shaders/GaussianBlur.compute Normal file
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@ -0,0 +1,38 @@
#pragma kernel cs_main
Texture2D source_texture;
RWTexture2D<float4> result;
[numthreads(8, 8, 1)]
void cs_main(uint3 id : SV_DispatchThreadID)
{
//Define a basic 3x3 Gaussian kernel (just for illustration)
// float3x3 kernel = {
// {7, 1, 1},
// {1, 20, 1},
// {1, 1, 7}
// };
float3x3 kernel = {
{ 1, 2, 1 },
{ 2, 4, 2 },
{ 1, 2, 1 }
};
// Normalize kernel
//kernel /= 7+1+1+1+20+1+1+1+7;
kernel /= 16;
float4 sum = float4(0, 0, 0, 0);
// Convolution: Multiply the surrounding pixels with the kernel and sum them
for (int y = -1; y <= 1; y++)
{
for (int x = -1; x <= 1; x++)
{
sum += source_texture[id.xy + uint2(x, y)] * kernel[x + 1][y + 1];
}
}
result[id.xy] = sum;
}

7
Assets/Shaders/GaussianBlur.compute.meta Normal file
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