72 lines
3.2 KiB
C#
72 lines
3.2 KiB
C#
using System;
|
|
using SharpDX.D3DCompiler;
|
|
using SharpDX.Direct3D;
|
|
using SharpDX.Direct3D11;
|
|
using SharpDX.Mathematics.Interop;
|
|
|
|
namespace Intromat.Pipelines
|
|
{
|
|
public class DisplayMeshPipeline
|
|
{
|
|
private readonly VertexShader _vs;
|
|
private readonly PixelShader _ps;
|
|
private readonly DeviceContext _context;
|
|
private readonly SamplerState _sampler;
|
|
private ShaderResourceView? _srv;
|
|
private readonly RasterizerState _rs;
|
|
private readonly DepthStencilState _dss;
|
|
private const string _vertexShader = "void main(in uint i : SV_VertexID, out float2 uv : TEXCOORD, out float4 pos : SV_Position) { uv = float2(i % 2, i / 2); pos = float4(uv * 2 - 1, 0.5, 1); }";
|
|
private const string _pixelShader = "Texture2D t; SamplerState s; float4 main(in float2 uv : TEXCOORD) : SV_Target0 { return float4(t.Sample(s, uv).xyz, 1); }";
|
|
|
|
public DisplayMeshPipeline(Device device, DeviceContext context)
|
|
{
|
|
var flags = ShaderFlags.None;
|
|
#if DEBUG
|
|
flags |= ShaderFlags.Debug;
|
|
#endif
|
|
_vs = new VertexShader(device, ShaderBytecode.Compile(_vertexShader, "main", "vs_5_0", flags).Bytecode.Data);
|
|
_ps = new PixelShader(device, ShaderBytecode.Compile(_pixelShader, "main", "ps_5_0", flags).Bytecode.Data);
|
|
_context = context;
|
|
var samplerDesc = new SamplerStateDescription
|
|
{
|
|
Filter = Filter.MinMagMipLinear,
|
|
AddressU = TextureAddressMode.Clamp,
|
|
AddressV = TextureAddressMode.Clamp,
|
|
AddressW = TextureAddressMode.Clamp
|
|
};
|
|
_sampler = new SamplerState(device, samplerDesc);
|
|
var rasterizerDesc = RasterizerStateDescription.Default();
|
|
rasterizerDesc.CullMode = CullMode.None;
|
|
rasterizerDesc.IsDepthClipEnabled = false;
|
|
_rs = new RasterizerState(device, rasterizerDesc);
|
|
var depthStencilStateDesc = DepthStencilStateDescription.Default();
|
|
depthStencilStateDesc.IsDepthEnabled = false;
|
|
_dss = new DepthStencilState(device, depthStencilStateDesc);
|
|
}
|
|
|
|
public void Apply()
|
|
{
|
|
var viewport = _context.Rasterizer.GetViewports<RawViewportF>()[0];
|
|
var dim = Math.Min(viewport.Width, viewport.Height);
|
|
var offsetX = dim < viewport.Width ? (viewport.Width - dim) / 2 : 0;
|
|
var offsetY = dim < viewport.Height ? (viewport.Height - dim) / 2 : 0;
|
|
_context.Rasterizer.SetViewport(offsetX, offsetY, dim, dim);
|
|
_context.InputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleStrip;
|
|
_context.VertexShader.Set(_vs);
|
|
_context.PixelShader.Set(_ps);
|
|
_context.PixelShader.SetShaderResources(0, _srv);
|
|
_context.PixelShader.SetSampler(0, _sampler);
|
|
_context.Rasterizer.State = _rs;
|
|
_context.OutputMerger.DepthStencilState = _dss;
|
|
_context.Draw(4, 0);
|
|
_context.PixelShader.SetShaderResources(0, (ShaderResourceView?)null);
|
|
}
|
|
|
|
public ShaderResourceView? ShaderResourceView
|
|
{
|
|
get => _srv;
|
|
set => _srv = value;
|
|
}
|
|
}
|
|
}
|