public void WriteHermiteIntersections(int size, GPUTexture3D signsTexture, GPUTexture3D intersectionsTexture, GPUTexture3D normals1, GPUTexture3D normals2, GPUTexture3D normals3)
{
int groups = size / ThreadGroupSize;
context.ClearState();
context.ComputeShader.Set(csIntersections);
context.ComputeShader.SetShaderResource(perlin.View, 0);
context.ComputeShader.SetSampler(trilinearSampler, 0);
context.ComputeShader.SetUnorderedAccessView(signsTexture.UnorderedAccessView, 0);
context.ComputeShader.SetUnorderedAccessView(intersectionsTexture.UnorderedAccessView, 1);
context.ComputeShader.SetUnorderedAccessView(normals1.UnorderedAccessView, 2);
context.ComputeShader.SetUnorderedAccessView(normals2.UnorderedAccessView, 3);
context.ComputeShader.SetUnorderedAccessView(normals3.UnorderedAccessView, 4);
context.Dispatch(groups, groups, groups);
/* context.ClearState();
* context.ComputeShader.Set(csY);
* context.ComputeShader.SetShaderResource(buffer.View, 0);
* context.ComputeShader.SetUnorderedAccessView(output, 0);
*
* context.Dispatch(width, groupsY, 1);*/
//context.GenerateMips(tx.View);
}
private static void saveTest3DTexture(DX11Game game, int size, string name, byte[] data)
{
var texture3D = GPUTexture3D.CreateCPUWritable(game, size, size, size, Format.R8G8B8A8_UNorm);
texture3D.SetTextureRawData(data);
Texture3D.SaveTextureToFile(game.Device.ImmediateContext, texture3D.Resource, ImageFileFormat.Dds,
TWDir.Test.CreateSubdirectory("GPU").CreateFile(name + ".dds").FullName);
texture3D.SaveToImageSlices(game, TWDir.Test.CreateSubdirectory("GPU").CreateSubdirectory(name));
}
public byte[] ReadDataThroughStageBuffer(GPUTexture3D texture)
{
//texture.SaveToImageSlices(game, TWDir.Test.CreateSubdirectory("Temp2"));
var cache = GPUTexture3D.CreateCPUReadable(game, texture.Resource.Description.Width, texture.Resource.Description.Height, texture.Resource.Description.Depth, texture.Resource.Description.Format);
game.Device.ImmediateContext.CopySubresourceRegion(texture.Resource, 0, cache.Resource, 0, 0, 0, 0);
//cache.SaveToImageSlices(game, TWDir.Test.CreateSubdirectory("Temp"));
return(cache.GetRawData());
}
public static GPUTexture3D CreateUAV(DX11Game game, int width, int height, int depth, Format format, Format viewFormat)
{
var desc = getBaseDesc(width, height, depth, format);
desc.Usage = ResourceUsage.Default;
desc.CpuAccessFlags = CpuAccessFlags.None;
desc.BindFlags = BindFlags.ShaderResource | BindFlags.UnorderedAccess;
var resource = new Texture3D(game.Device, desc);
var uav = new UnorderedAccessView(resource.Device, resource, new UnorderedAccessViewDescription()
{
Format = viewFormat,
Dimension = UnorderedAccessViewDimension.Texture3D,
ArraySize = -1,
DepthSliceCount = -1,
ElementCount = -1,
});
var tex = new GPUTexture3D(resource, null, uav);
return(tex);
}
public GPUTexture3D CreateDensitySignsTexture(int size)
{
var desc = new Texture3DDescription()
{
Width = size,
Height = size,
Depth = size,
Usage = ResourceUsage.Default,
BindFlags = BindFlags.ShaderResource | BindFlags.UnorderedAccess,// | BindFlags.RenderTarget,
CpuAccessFlags = CpuAccessFlags.None,
Format = Format.R8G8B8A8_UNorm,
MipLevels = 0,
//OptionFlags = SlimDX.Direct3D11.ResourceOptionFlags.GenerateMipMaps
};
var resource = new Texture3D(game.Device, desc);
var uav = new UnorderedAccessView(game.Device, resource, new UnorderedAccessViewDescription()
{
Format = Format.R8G8B8A8_UNorm,
Dimension = UnorderedAccessViewDimension.Texture3D,
ArraySize = -1,
DepthSliceCount = -1,
ElementCount = -1,
});
/*var view = new ShaderResourceView(game.Device, resource, new ShaderResourceViewDescription()
* {
* Dimension = ShaderResourceViewDimension.Texture3D,
* Format = Format.R8G8B8A8_UNorm,
* MipLevels = -1
* });*/
var tex = new GPUTexture3D(resource, null, uav);
return(tex);
}
public void WriteHermiteSigns(int size, Vector3 offset, Vector3 scaling, string density, GPUTexture3D tx)
{
//var tx = GPUTexture3D.CreateUAV(game, size, size, size, Format.R32_Typeless, Format.R32_Float);
//var tx = CreateDensitySignsTexture(size);//GPUTexture3D.CreateUAV(game, size, size, size, Format.R8G8B8A8_UNorm, Format.R8G8B8A8_UNorm);
var width = tx.Resource.Description.Width;
int groupsX = (int)Math.Ceiling(width / (double)ThreadGroupSize);
var height = tx.Resource.Description.Height;
int groupsY = (int)Math.Ceiling(height / (double)ThreadGroupSize);
context.ClearState();
context.ComputeShader.Set(csX);
context.ComputeShader.SetShaderResource(perlin.View, 0);
context.ComputeShader.SetUnorderedAccessView(tx.UnorderedAccessView, 0);
context.ComputeShader.SetSampler(trilinearSampler, 0);
context.Dispatch(groupsX, groupsX, groupsX);
/* context.ClearState();
* context.ComputeShader.Set(csY);
* context.ComputeShader.SetShaderResource(buffer.View, 0);
* context.ComputeShader.SetUnorderedAccessView(output, 0);
*
* context.Dispatch(width, groupsY, 1);*/
//context.GenerateMips(tx.View);
}
private const int ThreadGroupSize = 8; // corresponds to shader
public GPUHermiteCalculator(DX11Game game)
{
this.game = game;
context = game.Device.ImmediateContext;
csX = loadComputeShader(CompiledShaderCache.Current.RootShaderPath + "DualContouring\\HermiteTerrain.hlsl", "CSGridSigns");
csIntersections = loadComputeShader(CompiledShaderCache.Current.RootShaderPath + "DualContouring\\HermiteTerrain.hlsl", "CSCalcIntersections");
var random = new Random(0);
var noiseSize = 64;
var data = new float[noiseSize * noiseSize * noiseSize];
/*var data = new float[2 * 2 * 2];
* data[0] = 1;
* data[1] = -1;
* data[2] = -1;
* data[3] = -1;
* data[4] = -1;
* data[5] = -1;
* data[6] = -1;
* data[7] = -1;*/
for (int i = 0; i < noiseSize * noiseSize * noiseSize; i++)
{
data[i] = (float)(random.NextDouble() * 2 - 1);
}
var strm = new DataStream(data, true, false);
perlin = GPUTexture3D.CreateDefault(game, noiseSize, noiseSize, noiseSize, Format.R32_Float);
game.Device.ImmediateContext.UpdateSubresource(new DataBox(4 * noiseSize, 4 * noiseSize * noiseSize, strm),
perlin.Resource, 0, new ResourceRegion(0, 0, 0, noiseSize, noiseSize, noiseSize));
/*perlin = GPUTexture3D.CreateCPUWritable(game, 64, 64, 64, Format.R8G8B8A8_UNorm);
* var random = new Random(0);
* var data = new byte[64 * 64 * 64 * 4];
* var i = 0;
* for (int x = 0; x < 64; x++)
* {
* for (int y = 0; y < 64; y++)
* {
* for (int z = 0; z < 64; z++)
* {
*
* //var val = ((x/64f)*2 - 1 + (z/64f)*2 - 1)/2.0f;
* //val = val > 0 ? 1 : -1;
* //data[i*4] = (byte) ((val/2f + 0.5f)*255f);
* data[i * 4] = (byte)random.Next(0, 255);
* i++;
*
* }
* }
* }*/
//perlin.SetTextureRawData(data);
//perlin.SaveToImageSlices(game, TWDir.Test.CreateSubdirectory("DualContouring.GPU/perlin"));
trilinearSampler = SamplerState.FromDescription(game.Device, new SamplerDescription()
{
AddressU = TextureAddressMode.Wrap,
AddressV = TextureAddressMode.Wrap,
AddressW = TextureAddressMode.Wrap,
Filter = Filter.MinMagMipPoint,
});
}
