public void DoDraw(DateTime dateTime, GpuSwapChain swapChain)
{
using (var uniformTimeCpuBufferStream = UniformTimeCpuBuffer.AsStream())
using (var uniformTimeCpuBufferWriter = new BinaryWriter(uniformTimeCpuBufferStream))
{
float frametime = ((float)(dateTime - StartDateTime).TotalMilliseconds) / 1000;
uniformTimeCpuBufferWriter.Write(frametime);
}
Device.DefaultQueue.WriteBuffer(UniformBuffer, TimeOffset, UniformTimeCpuBuffer);
var renderPassDesriptor = new GpuRenderPassDescriptor(new GpuRenderPassColorAttachment[]
{
new GpuRenderPassColorAttachment(swapChain.GetCurrentTexture().CreateView(), new GpuColorDict {
R = 0, B = 0, G = 0, A = 1.0f
})
});
var commandEncoder = Device.CreateCommandEncoder();
var passEncoder = commandEncoder.BeginRenderPass(renderPassDesriptor);
if (Settings.RenderBundles)
{
passEncoder.ExecuteBundles(new GpuRenderBundle[] { RenderBundle });
}
else
{
RecordRenderPass(passEncoder);
}
passEncoder.EndPass();
Device.DefaultQueue.Sumit(new GpuCommandBuffer[] { commandEncoder.Finish() });
}
public PresentRender(GpuDevice device, IntPtr handle, Size size)
{
mHandle = handle;
mDevice = device;
mSwapChain = new GpuSwapChain(handle, size, GpuPixelFormat.R8G8B8A8Unknown, mDevice);
mBlendState = new GpuBlendState(mDevice, new RenderTargetBlendDescription()
{
AlphaBlendOperation = GpuBlendOperation.Add,
BlendOperation = GpuBlendOperation.Add,
DestinationAlphaBlend = GpuBlendOption.InverseSourceAlpha,
DestinationBlend = GpuBlendOption.InverseSourceAlpha,
SourceAlphaBlend = GpuBlendOption.SourceAlpha,
SourceBlend = GpuBlendOption.SourceAlpha,
IsBlendEnable = true
});
//compile shader
mVertexShader = new GpuVertexShader(mDevice, GpuVertexShader.Compile(Properties.Resources.PresentVertexShader));
mDrawPixelShader = new GpuPixelShader(mDevice, GpuPixelShader.Compile(Properties.Resources.PresentDrawPixelShader));
mMaskPixelShader = new GpuPixelShader(mDevice, GpuPixelShader.Compile(Properties.Resources.PresentMaskPixelShader));
//create input layout, we only need to render texture
mInputLayout = new GpuInputLayout(mDevice, new InputElement[]
{
new InputElement("POSITION", 0, 12),
new InputElement("TEXCOORD", 0, 8)
}, mVertexShader);
//init vertex and index data
Vertex[] vertices = new Vertex[]
{
new Vertex()
{
Position = new System.Numerics.Vector3(0, 0, 0), TexCoord = new System.Numerics.Vector2(0, 0)
},
new Vertex()
{
Position = new System.Numerics.Vector3(0, 1, 0), TexCoord = new System.Numerics.Vector2(0, 1)
},
new Vertex()
{
Position = new System.Numerics.Vector3(1, 1, 0), TexCoord = new System.Numerics.Vector2(1, 1)
},
new Vertex()
{
Position = new System.Numerics.Vector3(1, 0, 0), TexCoord = new System.Numerics.Vector2(1, 0)
}
};
uint[] indices = new uint[]
{
0, 1, 2,
2, 3, 0
};
//create vertex and index buffer
mVertexBuffer = new GpuBuffer(
Utility.SizeOf <Vertex>() * vertices.Length,
Utility.SizeOf <Vertex>(),
mDevice, GpuResourceInfo.VertexBuffer());
mIndexBuffer = new GpuBuffer(
Utility.SizeOf <uint>() * indices.Length,
Utility.SizeOf <uint>(),
mDevice, GpuResourceInfo.IndexBuffer());
mVertexBuffer.Update(vertices);
mIndexBuffer.Update(indices);
//create constant buffer
//transform buffer is used for vertex shader to do transform
//render config buffer is used for pixel shader to render with opacity
mTransformBuffer = new GpuBuffer(
Utility.SizeOf <Transform>(),
Utility.SizeOf <Transform>(),
mDevice, GpuResourceInfo.ConstantBuffer());
mRenderConfigBuffer = new GpuBuffer(
Utility.SizeOf <RenderConfig>(),
Utility.SizeOf <RenderConfig>(),
mDevice, GpuResourceInfo.ConstantBuffer());
mGpuSamplerState = new GpuSamplerState(mDevice);
}
public void ReSize(Size newSize)
{
Utility.Dispose(ref mSwapChain);
mSwapChain = new GpuSwapChain(mHandle, newSize, GpuPixelFormat.R8G8B8A8Unknown, mDevice);
}
