public override Framebuffer CreateFramebuffer(int width, int height)
{
width = Math.Max(1, width);
height = Math.Max(1, height);
D3DTexture2D colorTexture = new D3DTexture2D(_device, new Texture2DDescription()
{
Format = SharpDX.DXGI.Format.R32G32B32A32_Float,
ArraySize = 1,
MipLevels = 1,
Width = width,
Height = height,
SampleDescription = new SharpDX.DXGI.SampleDescription(1, 0),
Usage = ResourceUsage.Default,
BindFlags = BindFlags.RenderTarget | BindFlags.ShaderResource,
CpuAccessFlags = CpuAccessFlags.None,
OptionFlags = ResourceOptionFlags.None
});
D3DTexture2D depthTexture = new D3DTexture2D(_device, new Texture2DDescription()
{
Format = SharpDX.DXGI.Format.R16_Typeless,
ArraySize = 1,
MipLevels = 1,
Width = width,
Height = height,
SampleDescription = new SharpDX.DXGI.SampleDescription(1, 0),
Usage = ResourceUsage.Default,
BindFlags = BindFlags.DepthStencil | BindFlags.ShaderResource,
CpuAccessFlags = CpuAccessFlags.None,
OptionFlags = ResourceOptionFlags.None
});
return(new D3DFramebuffer(_device, colorTexture, depthTexture));
}
public void GetTextureData(int mipLevel, IntPtr destination, int storageSizeInBytes)
{
int width = MipmapHelper.GetDimension(Width, mipLevel);
int height = MipmapHelper.GetDimension(Height, mipLevel);
D3DTexture2D stagingTexture = new D3DTexture2D(_device, new Texture2DDescription()
{
Width = width,
Height = height,
Usage = ResourceUsage.Staging,
BindFlags = BindFlags.None,
CpuAccessFlags = CpuAccessFlags.Read,
OptionFlags = ResourceOptionFlags.None,
MipLevels = 1,
ArraySize = 1,
SampleDescription = new SharpDX.DXGI.SampleDescription(1, 0),
Format = DeviceTexture.Description.Format
});
// Copy the data from the GPU to the staging texture.
_device.ImmediateContext.CopySubresourceRegion(DeviceTexture, mipLevel, null, stagingTexture.DeviceTexture, 0);
int elementCount = width * height;
// Copy the data to the array.
DataBox db = _device.ImmediateContext.MapSubresource(
stagingTexture.DeviceTexture,
0,
MapMode.Read,
MapFlags.None,
out DataStream ds);
int pixelSizeInBytes = D3DFormats.GetPixelSize(DeviceTexture.Description.Format);
int rowSize = pixelSizeInBytes * width;
// If the pitch exactly matches the row size, we can simply copy all the data.
if (rowSize == db.RowPitch)
{
SharpDX.Utilities.CopyMemory(destination, db.DataPointer, elementCount * pixelSizeInBytes);
}
else
{
// The texture data may not have a pitch exactly equal to the row width.
// This means that the pixel data is not "tightly packed" into the buffer given
// to us, and has empty data at the end of each row.
for (int rowNumber = 0; rowNumber < height; rowNumber++)
{
int rowStartOffsetInBytes = rowNumber * width * pixelSizeInBytes;
ds.Read(destination, rowStartOffsetInBytes, width * pixelSizeInBytes);
// At the end of the row, seek the stream to skip the extra filler data,
// which is equal to (RowPitch - RowSize) bytes.
ds.Seek(db.RowPitch - rowSize, SeekOrigin.Current);
}
}
stagingTexture.Dispose();
}
public D3DFramebuffer(Device device, D3DTexture2D colorTexture, D3DTexture2D depthTexture, int width, int height)
{
_device = device;
_colorTextures[0] = colorTexture;
_renderTargetViews[0] = new RenderTargetView(device, colorTexture.DeviceTexture);
DepthStencilViewDescription dsvd = new DepthStencilViewDescription();
dsvd.Format = SharpDX.DXGI.Format.D16_UNorm;
dsvd.Dimension = DepthStencilViewDimension.Texture2D;
DepthStencilView = new DepthStencilView(device, depthTexture.DeviceTexture, dsvd);
DepthTexture = depthTexture;
_width = width;
_height = height;
}
public override DeviceTexture2D CreateTexture(IntPtr pixelData, int width, int height, int pixelSizeInBytes, PixelFormat format)
{
D3DTexture2D texture = new D3DTexture2D(
_device,
BindFlags.ShaderResource,
ResourceUsage.Default,
CpuAccessFlags.None,
D3DFormats.ConvertPixelFormat(format),
pixelData,
width,
height,
width * pixelSizeInBytes);
return(texture);
}
public override DeviceTexture2D CreateTexture <T>(T[] pixelData, int width, int height, int pixelSizeInBytes, PixelFormat format)
{
GCHandle handle = GCHandle.Alloc(pixelData, GCHandleType.Pinned);
D3DTexture2D texture = new D3DTexture2D(
_device,
BindFlags.ShaderResource,
ResourceUsage.Default,
CpuAccessFlags.None,
D3DFormats.ConvertPixelFormat(format),
handle.AddrOfPinnedObject(),
width,
height,
width * pixelSizeInBytes);
handle.Free();
return(texture);
}
public D3DFramebuffer(Device device, D3DTexture2D colorTexture, D3DTexture2D depthTexture)
: this(device, colorTexture, depthTexture, colorTexture.Width, colorTexture.Height)
{
}