Queue Texture 2D Array

vvvv gamma question
1

Hi, this is I believe the equivalent of a Queue node for spread but this one will output a Texture2DArray.

It is using a compute shader with RWTexture2DArray<float4> (read and write texture 2d array).

shader QueueTexture_ComputeFX : ComputeShaderBase, Texturing
{
    RWTexture2DArray<float4> RWArray;
    int2 Reso;
    int counter;

    override void Compute()
    {
        uint2 uv = streams.DispatchThreadId.xy;
        float2 texUV = (float2(uv.x % Reso.x, uv.y % Reso.y) + 0.5) / Reso;
        float4 col = Texture0.SampleLevel(LinearSampler, texUV, 0);

        RWArray[uint3(uv, counter)] = col;
    }
};

TextureQueueArray.zip (5.6 KB)

2

hey, as you don’t have to sample (interpolate) you can use the Load methods instead of SampleLevel it is much faster because it loads the pixel data directly, like accessing a buffer. Load (DirectX HLSL Texture Object) - Win32 apps

and the logic in your shader is a RingBuffer, not a Queue… a Queue would always shift all entries one up and insert at 0.

so, something like that could work:

shader RingBufferTexture_ComputeFX : ComputeShaderBase, Texturing
{
    RWTexture2DArray<float4> RWArray;
    int2 Reso;
    int counter;

    override void Compute()
    {
        uint2 uv = streams.DispatchThreadId.xy;

        if (any(uv >= Reso))
            return;

        float4 col = Texture0.Load(int3(uv, 0));

        RWArray[uint3(uv, counter)] = col;
    }
};