public void Run(ImagesModel images, UploadBuffer constantBuffer, ITexture target)
{
var dev = Device.Get();
dev.Compute.Set(shader.Compute);
// src images
for (int i = 0; i < images.NumImages; ++i)
{
dev.Compute.SetShaderResource(i, images.Images[i].Image.View);
}
for (int curMipmap = 0; curMipmap < images.NumMipmaps; ++curMipmap)
{
var size = images.GetSize(curMipmap);
// dst image
dev.Compute.SetUnorderedAccessView(0, target.GetUaView(curMipmap));
for (int curLayer = 0; curLayer < images.NumLayers; ++curLayer)
{
constantBuffer.SetData(new LayerLevelFilter {
Layer = curLayer, Level = curMipmap
});
dev.Compute.SetConstantBuffer(0, constantBuffer.Handle);
dev.Dispatch(
Utility.Utility.DivideRoundUp(size.Width, builder.LocalSizeX),
Utility.Utility.DivideRoundUp(size.Height, builder.LocalSizeY),
Utility.Utility.DivideRoundUp(size.Depth, builder.LocalSizeZ));
}
}
// remove images from unordered acces view slots (otherwise they can't be bound as srv later)
dev.Compute.SetUnorderedAccessView(0, null);
}
/// <summary>
/// executes on iteration of the filter (for all layers and mipmaps)
/// </summary>
/// <param name="image">original images (might be used for texture bindings)</param>
/// <param name="src">source texture</param>
/// <param name="dst">destination texture</param>
/// <param name="cbuffer">buffer that stores some runtime information</param>
/// <param name="iteration">current filter iteration. Should be 0 if not separable. Should be 0 or 1 if separable (x- and y-direction pass) or 2 for z-direction pass</param>
/// <remarks>make sure to call UpdateParamBuffer() if parameters have changed after the last invocation</remarks>
internal void Run(ImagesModel image, ITexture src, ITexture dst, UploadBuffer cbuffer, int iteration)
{
if (parent.IsSepa)
{
Debug.Assert(iteration == 0 || iteration == 1 || iteration == 2);
}
else
{
Debug.Assert(iteration == 0);
}
// compatible textures?
Debug.Assert(src.Is3D == is3D);
Debug.Assert(dst.Is3D == is3D);
var dev = Device.Get();
dev.Compute.Set(shader.Compute);
// filter parameters (constant)
if (paramBuffer != null)
{
dev.Compute.SetConstantBuffer(1, paramBuffer.Handle);
}
dev.Compute.SetShaderResource(1, src.View);
for (int curMipmap = 0; curMipmap < image.NumMipmaps; ++curMipmap)
{
// dst texture
dev.Compute.SetUnorderedAccessView(0, dst.GetUaView(curMipmap));
var size = image.GetSize(curMipmap);
for (int curLayer = 0; curLayer < image.NumLayers; ++curLayer)
{
// src textures
dev.Compute.SetShaderResource(0, src.GetSrView(curLayer, curMipmap));
BindTextureParameters(image, curLayer, curMipmap);
cbuffer.SetData(new LayerLevelFilter
{
Layer = curLayer,
Level = curMipmap,
FilterX = iteration == 0?1:0,
FilterY = iteration == 1?1:0,
FilterZ = iteration == 2?1:0
});
dev.Compute.SetConstantBuffer(0, cbuffer.Handle);
dev.Dispatch(
Utility.Utility.DivideRoundUp(size.Width, localSize),
Utility.Utility.DivideRoundUp(size.Height, localSize),
Utility.Utility.DivideRoundUp(size.Depth, localSize));
}
}
// remove texture bindings
dev.Compute.SetUnorderedAccessView(0, null);
dev.Compute.SetShaderResource(0, null);
dev.Compute.SetShaderResource(1, null);
}