我對計算著色器（通過 Unity 的 DirectCompute）有一個相當(dāng)簡單的要求。我有一個 128x128 的紋理，我想將該紋理的紅色通道變成一維浮點數(shù)組。我需要經(jīng)常這樣做，所以只是在每個 texel 上做一個 cpu 端 for 循環(huán)不會削減它。初始化：    m_outputBuffer = new ComputeBuffer(m_renderTexture.width * m_renderTexture.height, sizeof(float));    m_kernelIndex = m_computeShader.FindKernel("CSMain");這是 C# 方法：/// <summary>/// This method converts the red channel of the given RenderTexture to a/// one dimensional array of floats of size width * height./// </summary>private float[] ConvertToFloatArray(RenderTexture renderTexture){    m_computeShader.SetTexture(m_kernelIndex, INPUT_TEXTURE, renderTexture);    float[] result = new float[renderTexture.width * renderTexture.height];    m_outputBuffer.SetData(result);    m_computeShader.SetBuffer(m_kernelIndex, OUTPUT_BUFFER, m_outputBuffer);    m_computeShader.Dispatch(m_kernelIndex, renderTexture.width / 8, renderTexture.height / 8, 1);    m_outputBuffer.GetData(result);    return result;}以及整個計算著色器：// Each #kernel tells which function to compile; you can have many kernels#pragma kernel CSMain// Create a RenderTexture with enableRandomWrite flag and set it// with cs.SetTextureTexture2D<float4> InputTexture;RWBuffer<float> OutputBuffer;[numthreads(8, 8, 1)]void CSMain(uint3 id : SV_DispatchThreadID){    OutputBuffer[id.x * id.y] = InputTexture[id.xy].r;}C# 方法返回一個預(yù)期大小的數(shù)組，它通常符合我的預(yù)期。然而，即使我的輸入紋理是統(tǒng)一的紅色，仍然會有一些零。