Deferred shading

2026-05-17 00:54:57 +08:00 · 2019-12-04 00:52:22 +11:00
parent 755477590d
commit 9a53c2147b
60 changed files with 2724 additions and 509 deletions
@@ -0,0 +1,152 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SharpDX;
+using SharpDX.Direct3D;
+using SharpDX.Direct3D11;
+using Device = SharpDX.Direct3D11.Device;
+using Buffer = SharpDX.Direct3D11.Buffer;
+using SharpDX.DXGI;
+
+namespace CodeWalker.Rendering
+{
+    public class UnitCone
+    {
+        private Buffer VertexBuffer { get; set; }
+        private Buffer IndexBuffer { get; set; }
+        private InputLayout InputLayout { get; set; }
+        private VertexBufferBinding vbbinding;
+        private int indexcount;
+
+        private struct SphTri
+        {
+            public int v1;
+            public int v2;
+            public int v3;
+            public SphTri(int i1, int i2, int i3)
+            {
+                v1 = i1;
+                v2 = i2;
+                v3 = i3;
+            }
+        }
+
+        public UnitCone(Device device, byte[] vsbytes, int detail, bool invert = false)
+        {
+
+            InputLayout = new InputLayout(device, vsbytes, new[]
+            {
+                new InputElement("POSITION", 0, Format.R32G32B32A32_Float, 0, 0),
+                new InputElement("NORMAL", 0, Format.R32G32B32A32_Float, 16, 0),
+            });
+
+
+
+            List<Vector4> verts = new List<Vector4>();
+            Dictionary<Vector4, int> vdict = new Dictionary<Vector4, int>();
+            List<SphTri> curtris = new List<SphTri>();
+
+            verts.Add(new Vector4(0.0f, 0.0f, 0.0f, 0.0f));//top end (translated by VS!)
+            verts.Add(new Vector4(0.0f, -1.0f, 0.0f, 0.0f));//top normal
+            verts.Add(new Vector4(0.0f, 0.0f, 0.0f, 1.0f));//bottom end
+            verts.Add(new Vector4(0.0f, 1.0f, 0.0f, 1.0f));//bottom normal
+
+            int nlons = detail * 4;
+            int lastlon = nlons - 1;
+            float latrng = 1.0f / (detail);
+            float lonrng = 1.0f / (nlons);
+            float twopi = (float)(2.0 * Math.PI);
+
+            for (int lon = 0; lon < nlons; lon++)
+            {
+                float tlon = lon * lonrng;
+                float rlon = tlon * twopi;
+                float lonx = (float)Math.Sin(rlon);
+                float lonz = (float)Math.Cos(rlon);
+
+                verts.Add(new Vector4(lonx, 0.0f, lonz, 1.0f));//2
+                verts.Add(new Vector4(lonx, 0.0f, lonz, 0.0f));//side normal
+                verts.Add(new Vector4(lonx, 0.0f, lonz, 1.0f));//3
+                verts.Add(new Vector4(0.0f, 1.0f, 0.0f, 0.0f));//bottom normal
+            }
+
+            for (int lon = 0; lon < nlons; lon++)
+            {
+                int i0 = 2 + lon * 2;
+                int i1 = i0 + 2;
+
+                if (lon == lastlon)
+                {
+                    i1 = 2;
+                }
+
+                curtris.Add(new SphTri(0, i0, i1)); //fill the cone
+                curtris.Add(new SphTri(1, i1+1, i0+1)); //bottom cap triangles
+            }
+
+
+
+            List<uint> idata = new List<uint>();
+            foreach (var tri in curtris)
+            {
+                idata.Add((uint)tri.v1);
+                idata.Add((uint)(invert ? tri.v2 : tri.v3));
+                idata.Add((uint)(invert ? tri.v3 : tri.v2));
+            }
+
+
+            VertexBuffer = Buffer.Create(device, BindFlags.VertexBuffer, verts.ToArray());
+            vbbinding = new VertexBufferBinding(VertexBuffer, 32, 0);
+
+            IndexBuffer = Buffer.Create(device, BindFlags.IndexBuffer, idata.ToArray());
+            indexcount = idata.Count;
+
+        }
+
+
+        public void Draw(DeviceContext context)
+        {
+            context.InputAssembler.InputLayout = InputLayout;
+            context.InputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleList;
+            context.InputAssembler.SetVertexBuffers(0, vbbinding);
+            context.InputAssembler.SetIndexBuffer(IndexBuffer, Format.R32_UInt, 0);
+
+            context.DrawIndexed(indexcount, 0, 0);
+        }
+
+        public void DrawInstanced(DeviceContext context, int count)
+        {
+            context.InputAssembler.InputLayout = InputLayout;
+            context.InputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleList;
+            context.InputAssembler.SetVertexBuffers(0, vbbinding);
+            context.InputAssembler.SetIndexBuffer(IndexBuffer, Format.R32_UInt, 0);
+
+            context.DrawIndexedInstanced(indexcount, count, 0, 0, 0);
+        }
+
+
+        public void Dispose()
+        {
+            if (VertexBuffer != null)
+            {
+                VertexBuffer.Dispose();
+                VertexBuffer = null;
+            }
+            if (IndexBuffer != null)
+            {
+                IndexBuffer.Dispose();
+                IndexBuffer = null;
+            }
+            if (InputLayout != null)
+            {
+                InputLayout.Dispose();
+                InputLayout = null;
+            }
+        }
+
+    }
+
+
+}