maint: added htrace ssgi

Assets/Plugins/HTraceSSGI/Scripts/Globals/HRenderer.cs

@@ -0,0 +1,135 @@
+//pipelinedefine
+#define H_URP
+
+using System.Collections.Generic;
+using System.Reflection;
+using UnityEditor;
+using UnityEngine;
+using UnityEngine.Rendering;
+using HTraceSSGI.Scripts.Infrastructure.URP;
+using UnityEngine.Rendering.Universal;
+
+namespace HTraceSSGI.Scripts.Globals
+{
+	public enum HRenderPipeline
+	{
+		None,
+		BIRP,
+		URP,
+		HDRP
+	}
+	
+	public static class HRenderer
+	{
+		static HRenderPipeline s_CurrentHRenderPipeline = HRenderPipeline.None;
+
+		public static HRenderPipeline CurrentHRenderPipeline
+		{
+			get
+			{
+				if (s_CurrentHRenderPipeline == HRenderPipeline.None)
+				{
+					s_CurrentHRenderPipeline = GetRenderPipeline();
+				}
+				return s_CurrentHRenderPipeline;
+			}
+		}
+	
+		private static HRenderPipeline GetRenderPipeline()
+		{
+			if (GraphicsSettings.currentRenderPipeline)
+			{
+				if (GraphicsSettings.currentRenderPipeline.GetType().ToString().Contains("HighDefinition"))
+					return HRenderPipeline.HDRP;
+				else
+					return HRenderPipeline.URP;
+			}
+
+			return HRenderPipeline.BIRP;
+		}
+
+		public static bool SupportsInlineRayTracing
+		{
+			get
+			{
+			#if UNITY_2023_1_OR_NEWER
+				return SystemInfo.supportsInlineRayTracing;
+			#else
+				return false;
+			#endif
+			}
+		}
+		
+		public static bool SupportsRayTracing
+		{
+			get
+			{
+			#if UNITY_2023_1_OR_NEWER // TODO: revert this to 2019 when raytracing issue in 2022 is resolved
+				if (SystemInfo.supportsRayTracing == false)
+					return false;
+				
+				
+				return true;
+			#else
+				return false;
+			#endif
+			}
+		}
+		
+
+		public static int TextureXrSlices
+		{
+			get
+			{
+				if (Application.isPlaying == false)
+					return 1;
+
+
+				return 1;
+			}
+		}
+		
+		static RenderTexture emptyTexture;
+		public static RenderTexture EmptyTexture
+		{
+			get
+			{
+				if (emptyTexture == null)
+				{
+					emptyTexture                   = new RenderTexture(4, 4, 0);
+					emptyTexture.enableRandomWrite = true;
+					emptyTexture.dimension         = TextureDimension.Tex2D;
+					emptyTexture.format            = RenderTextureFormat.ARGBFloat;
+					emptyTexture.Create();
+				}
+
+				return emptyTexture;
+			}
+		}
+		
+		private static Mesh _fullscreenTriangle;
+		public static Mesh FullscreenTriangle
+		{
+			get
+			{
+				if (_fullscreenTriangle != null)
+					return _fullscreenTriangle;
+
+				_fullscreenTriangle = new Mesh { name = "Fullscreen Triangle" };
+
+				// Because we have to support older platforms (GLES2/3, DX9 etc) we can't do all of
+				// this directly in the vertex shader using vertex ids :(
+				_fullscreenTriangle.SetVertices(new List<Vector3>
+				{
+					new Vector3(-1f, -1f, 0f),
+					new Vector3(-1f, 3f,  0f),
+					new Vector3( 3f, -1f, 0f)
+				});
+				_fullscreenTriangle.SetIndices(new[] { 0, 1, 2 }, MeshTopology.Triangles, 0, false);
+				_fullscreenTriangle.UploadMeshData(false);
+
+				return _fullscreenTriangle;
+			}
+		}
+	}
+}