private ShaderResourceView ApplyCS(ShaderResourceView srcTextureSRV, float fIntencity, string Shader)
{
SharpDX.Direct3D.ShaderMacro[] defines = new[] {
new SharpDX.Direct3D.ShaderMacro("THREADSX", 32),
new SharpDX.Direct3D.ShaderMacro("THREADSY", 32),
};
using (var srcTexture = srcTextureSRV.ResourceAs <Texture2D>())
{
var desc = srcTexture.Description;
desc.BindFlags = BindFlags.UnorderedAccess;
using (var target = new Texture2D(_game.DeviceContext.Device, desc))
using (var targetUAV = new UnorderedAccessView(_game.DeviceContext.Device, target))
using (var computeBuffer = new Buffer(_game.DeviceContext.Device,
Utilities.SizeOf <ComputeConstants>(),
ResourceUsage.Default,
BindFlags.ConstantBuffer,
CpuAccessFlags.None,
ResourceOptionFlags.None,
0))
using (var cs = StaticMetods.GetComputeShader(_game.DeviceContext.Device, Shader, defines))
{
var constants = new ComputeConstants {
Intensity = fIntencity
};
_game.DeviceContext.UpdateSubresource(ref constants, computeBuffer);
_game.DeviceContext.ComputeShader.Set(cs);
_game.DeviceContext.ComputeShader.SetShaderResource(0, srcTextureSRV);
_game.DeviceContext.ComputeShader.SetUnorderedAccessView(0, targetUAV);
_game.DeviceContext.ComputeShader.SetConstantBuffer(0, computeBuffer);
_game.DeviceContext.Dispatch((int)Math.Ceiling(desc.Width / 32.0),
(int)Math.Ceiling(desc.Height / 32.0), 1);
_game.DeviceContext.ComputeShader.SetShaderResource(0, null);
_game.DeviceContext.ComputeShader.SetUnorderedAccessView(0, null);
_game.DeviceContext.ComputeShader.SetConstantBuffer(0, null);
StaticMetods.CopyUAVToSRV(_game.DeviceContext.Device, ref srcTextureSRV, targetUAV);
}
}
return(srcTextureSRV);
}
public void Blur(ref ShaderResourceView srcTextureSRV, float fIntencity)
{
var device = _game.DeviceContext.Device;
var context = _game.DeviceContext;
using (var srcTexture = srcTextureSRV.ResourceAs <Texture2D>())
{
var desc = srcTexture.Description;
desc.BindFlags = BindFlags.ShaderResource | BindFlags.UnorderedAccess;
using (var target = new Texture2D(_game.DeviceContext.Device, desc))
using (var targetUAV = new UnorderedAccessView(_game.DeviceContext.Device, target))
using (var targetSRV = new ShaderResourceView(_game.DeviceContext.Device, target))
using (var target2 = new Texture2D(_game.DeviceContext.Device, desc))
using (var target2UAV = new UnorderedAccessView(_game.DeviceContext.Device, target2))
using (var target2SRV = new ShaderResourceView(_game.DeviceContext.Device, target2))
using (var computeBuffer = new Buffer(_game.DeviceContext.Device,
Utilities.SizeOf <ComputeConstants>(),
ResourceUsage.Default,
BindFlags.ConstantBuffer,
CpuAccessFlags.None,
ResourceOptionFlags.None, 0))
using (var horizCS = StaticMetods.GetComputeShader(device, "Shaders\\Filters\\HBlurCS.hlsl", new[] {
new SharpDX.Direct3D.ShaderMacro("THREADSX", 1024),
new SharpDX.Direct3D.ShaderMacro("THREADSY", 1),
}))
using (var vertCS = StaticMetods.GetComputeShader(device, "Shaders\\Filters\\VBlurCS.hlsl", new[] {
new SharpDX.Direct3D.ShaderMacro("THREADSX", 1),
new SharpDX.Direct3D.ShaderMacro("THREADSY", 1024),
}))
{
var constants = new ComputeConstants {
Intensity = fIntencity
};
_game.DeviceContext.UpdateSubresource(ref constants, computeBuffer);
// The first source resource is the original image
context.ComputeShader.SetShaderResource(0, srcTextureSRV);
// The first destination resource is target
context.ComputeShader.SetUnorderedAccessView(0, targetUAV);
// Run the horizontal blur first (order doesn't matter)
context.ComputeShader.Set(horizCS);
_game.DeviceContext.ComputeShader.SetConstantBuffer(0, computeBuffer);
context.Dispatch((int)Math.Ceiling(desc.Width / 1024.0), (int)Math.Ceiling(desc.Height / 1.0), 1);
// We must set the compute shader stage SRV and UAV to
// null between calls to the compute shader
context.ComputeShader.SetShaderResource(0, null);
context.ComputeShader.SetUnorderedAccessView(0, null);
// The second source resource is the first target
context.ComputeShader.SetShaderResource(0, targetSRV);
// The second destination resource is target2
context.ComputeShader.SetUnorderedAccessView(0, target2UAV);
// Run the vertical blur
context.ComputeShader.Set(vertCS);
_game.DeviceContext.ComputeShader.SetConstantBuffer(0, computeBuffer);
context.Dispatch((int)Math.Ceiling(desc.Width / 1.0), (int)Math.Ceiling(desc.Height / 1024.0), 1);
// Set the compute shader stage SRV and UAV to null
context.ComputeShader.SetShaderResource(0, null);
context.ComputeShader.SetUnorderedAccessView(0, null);
_game.DeviceContext.ComputeShader.SetConstantBuffer(0, null);
StaticMetods.CopyUAVToSRV(_game.DeviceContext.Device, ref srcTextureSRV, target2UAV);
}
}
}
