#pragma kernel CSMain
// The RT used as input
RWTexture2D<float> heatmapTexture;
// The RT used as output
RWTexture2D<float4> result;

[numthreads(8,8,1)]
void CSMain (uint3 id : SV_DispatchThreadID)
{
    // This code slightly brightens every pixel.
    int2 pixel = int2(id.xy);
    heatmapTexture[pixel] = heatmapTexture[pixel] + 0.1f;
    result[id.xy] = heatmapTexture[pixel];
}