/// <summary>
/// Function to execute the compute shader with the compute engine.
/// </summary>
/// <returns>An array of <see cref="OutputData"/> values. These contain the results from the compute engine.</returns>
private static OutputData[] Execute()
{
// The first step is to provide the compute shader with the information it needs to do its job.
GorgonDispatchCall dispatch = _dispatchBuilder.ShaderResource(_intBuffer.GetShaderResourceView(BufferFormat.R32_SInt))
.ShaderResource(_floatBuffer.GetShaderResourceView(BufferFormat.R32_Float), 1)
.ReadWriteView(new GorgonReadWriteViewBinding(_outputBuffer.GetStructuredReadWriteView()))
.ComputeShader(_computeShader)
.Build();
// Now, we execute the shader with MaxValues threads for the first thread group.
_engine.Execute(dispatch, MaxValues, 1, 1);
// Finally, let's turn this into some meaningful data structures rather than raw buffer data.
// This will enable us handle the data better in our code.
return(_outputBuffer.GetData <OutputData>());
}
/// <summary>
/// Function to process a texture into the output texture.
/// </summary>
/// <param name="texture">The texture to process.</param>
/// <param name="outputTexture">The output texture that will receive the processed texture.</param>
/// <param name="thickness">The thickness of the sobel lines.</param>
/// <param name="threshold">The threshold used to determine an edge.</param>
public void Process(GorgonTexture2DView texture, GorgonTexture2DReadWriteView outputTexture, int thickness, float threshold)
{
if ((texture == null) ||
(outputTexture == null))
{
return;
}
if ((_dispatch == null) || (_dispatch.ShaderResources[0] != texture) || (_dispatch.ReadWriteViews[0].ReadWriteView != outputTexture))
{
_dispatch = _dispatchBuilder.ReadWriteView(new GorgonReadWriteViewBinding(outputTexture))
.ShaderResource(texture)
.Build();
}
_sobelOptions[0] = thickness;
_sobelOptions[1] = threshold;
_sobelData.SetData(_sobelOptions);
// Send 32 threads per group.
_compute.Execute(_dispatch, (int)(texture.Width / 32.0f).FastCeiling(), (int)(texture.Height / 32.0f).FastCeiling(), 1);
}
