public HardwareRenderTargetData([NotNull] HardwareRenderTarget renderTarget)
{
if (renderTarget == null)
{
throw new ArgumentNullException(nameof(renderTarget));
}
mTexture = renderTarget.GetTexture2D();
mBox = renderTarget.Device.ImmediateContext.MapSubresource(mTexture, 0, MapMode.Read, MapFlags.None);
mMemory = new ReadOnlyMemoryWindow(mBox.Data.DataPointer, mBox.Data.Length);
}
private void Destroy()
{
mOffScreenWindow?.Close();
mSwapChain?.Dispose();
mPixelShader?.Dispose();
mVertexShader?.Dispose();
mVertexBuffer?.Dispose();
mVertices?.Dispose();
mRenderTarget?.Dispose();
mOffScreenWindow = null;
mSwapChain = null;
mPixelShader = null;
mVertexShader = null;
mVertexBuffer = null;
mVertices = null;
mRenderTarget = null;
}
private void CreateView(int width, int height)
{
if (width <= 0)
{
throw new ArgumentOutOfRangeException(nameof(width));
}
if (height <= 0)
{
throw new ArgumentOutOfRangeException(nameof(height));
}
Destroy();
mWidth = width;
mHeight = height;
Execution.ExecuteOnUiThread(() =>
{
mOffScreenWindow = new Form();
mOffScreenWindow.Left = -65535;
mOffScreenWindow.Top = -65535;
mOffScreenWindow.FormBorderStyle = FormBorderStyle.None;
mOffScreenWindow.Width = 1;
mOffScreenWindow.Height = 1;
mOffScreenWindow.ShowInTaskbar = false;
mOffScreenWindow.Show();
mOffScreenWindow.Hide();
});
var description = new SwapChainDescription
{
BufferCount = 1,
IsWindowed = true,
ModeDescription = new ModeDescription(0, 0, new Rational(60, 1), Format.B8G8R8A8_UNorm),
SampleDescription = new SampleDescription(1, 0),
Usage = Usage.RenderTargetOutput | Usage.Shared,
OutputHandle = mOffScreenWindow.Handle
};
mSwapChain = mDevice.CreateSwapChain(description);
mPixelShader = new PixelShader(Device, Bytecode);
mVertexShader = new VertexShader(Device, mVertexShaderBytecode);
mVertexBuffer = CreateVertexBuffer(out mVertices);
Execution.ExecuteOnUiThread(() =>
{
mOffScreenWindow.Width = mWidth;
mOffScreenWindow.Height = mHeight;
});
mSwapChain.ResizeBuffers(1, mWidth, mHeight, Format.B8G8R8A8_UNorm, SwapChainFlags.None);
Device.ImmediateContext.Rasterizer.SetViewports(new Viewport(0.0f, 0.0f, mWidth, mHeight));
Device.ImmediateContext.Rasterizer.State =
RasterizerState.FromDescription(Device,
new RasterizerStateDescription
{
CullMode = CullMode.None,
FillMode = FillMode.Solid
});
mRenderTarget = new HardwareRenderTarget(mDevice, mSwapChain);
}