public static ShaderResourceView FromTexture2D(GraphicsResource resource, PixelFormat format)
{
return(new ShaderResourceView(resource, new ShaderResourceViewDescription
{
Shader4ComponentMapping = D3DXUtilities.DefaultComponentMapping(),
ViewDimension = ShaderResourceViewDimension.Texture2D,
Format = (Format)format,
Texture2D =
{
MipLevels = resource.Description.MipLevels
}
}));
}
public static ShaderResourceView FromBuffer(GraphicsResource resource, long firstElement, int elementCount, int structureByteStride)
{
return(new ShaderResourceView(resource, new ShaderResourceViewDescription
{
Shader4ComponentMapping = D3DXUtilities.DefaultComponentMapping(),
ViewDimension = ShaderResourceViewDimension.Buffer,
Buffer =
{
FirstElement = firstElement,
NumElements = elementCount,
StructureByteStride = structureByteStride
}
}));
}
public override void Load(string path2)
{
if (done)
{
return;
}
done = true;
Bitmap bm = new Bitmap(path);
Width = bm.Width;
Height = bm.Height;
Depth = 4;
var textureDesc = ResourceDescription.Texture2D(Format.R8G8B8A8_UNorm, Width, Height);
texture = DXGlobal.device.CreateCommittedResource(new HeapProperties(HeapType.Default), HeapFlags.None, textureDesc, ResourceStates.CopyDestination);
long uploadBufferSize = GetRequiredIntermediateSize(this.texture, 0, 1);
// Create the GPU upload buffer.
var textureUploadHeap = DXGlobal.device.CreateCommittedResource(new HeapProperties(CpuPageProperty.WriteBack, MemoryPool.L0), HeapFlags.None, ResourceDescription.Texture2D(Format.R8G8B8A8_UNorm, Width, Height), ResourceStates.GenericRead);
// Copy data to the intermediate upload heap and then schedule a copy
// from the upload heap to the Texture2D.
byte[] textureData = new byte[Width * Height * 4];
int loc = 0;
for (int y = 0; y < Height; y++)
{
for (int x = 0; x < Width; x++)
{
var pix = bm.GetPixel(x, y);
textureData[loc++] = 0xff; //pix.R;
textureData[loc++] = 0xff; //pix.G;
textureData[loc++] = 0xff; // pix.B;
textureData[loc++] = 0xff;
}
}
var handle = GCHandle.Alloc(textureData, GCHandleType.Pinned);
var ptr = Marshal.UnsafeAddrOfPinnedArrayElement(textureData, 0);
textureUploadHeap.WriteToSubresource(0, null, ptr, Depth * Width, textureData.Length);
handle.Free();
// DXGlobal.Display.CommandList.Close();
DXGlobal.Display.CommandList.Reset(DXGlobal.Display.DirectCmdListAlloc, Effect.Effect._pip);
DXGlobal.Display.CommandList.CopyTextureRegion(new TextureCopyLocation(texture, 0), 0, 0, 0, new TextureCopyLocation(textureUploadHeap, 0), null);
DXGlobal.Display.CommandList.ResourceBarrierTransition(this.texture, ResourceStates.CopyDestination, ResourceStates.PixelShaderResource);
// Describe and create a SRV for the texture.
srvDesc = new ShaderResourceViewDescription
{
Shader4ComponentMapping = D3DXUtilities.DefaultComponentMapping(),
Format = textureDesc.Format,
Dimension = ShaderResourceViewDimension.Texture2D,
Texture2D = { MipLevels = 1 },
};
var srvHeapDesc = new DescriptorHeapDescription()
{
DescriptorCount = 1,
Flags = DescriptorHeapFlags.ShaderVisible,
Type = DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView
};
DescriptorHeap srvH = DXGlobal.device.CreateDescriptorHeap(srvHeapDesc);
DXGlobal.device.CreateShaderResourceView(texture, srvDesc, srvH.CPUDescriptorHandleForHeapStart);
DXGlobal.Display.CommandList.Close();
DXGlobal.Display.CommandQueue.ExecuteCommandList(DXGlobal.Display.CommandList);
DXGlobal.Display.FlushCommandQueue();
}
