Fixed SSGI texture allocation with RG disabled (#2768)

Author: adrien-de-tocqueville

com.unity.render-pipelines.high-definition/CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed volume component tooltips using the same parameter name.
 - Fixed issue with saving some quality settings in volume overrides  (case 1293747)
 - Fixed NullReferenceException in HDRenderPipeline.UpgradeResourcesIfNeeded (case 1292524)
+- Fixed SSGI texture allocation when not using the RenderGraph.
 
 ### Changed
 - Removed the material pass probe volumes evaluation mode.

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/HDRenderPipeline.cs

@@ -772,20 +772,19 @@ void InitializeRenderTextures()
             {
                 m_RaytracingGBufferManager.CreateBuffers();
                 m_RayCountManager.InitializeNonRenderGraphResources();
-
-                if (m_Asset.currentPlatformRenderPipelineSettings.supportSSGI)
-                {
-                    m_IndirectDiffuseBuffer0 = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R16G16B16A16_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, autoGenerateMips: false, name: "IndirectDiffuseBuffer0");
-                    m_IndirectDiffuseBuffer1 = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R16G16B16A16_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, autoGenerateMips: false, name: "IndirectDiffuseBuffer1");
-                    m_IndirectDiffuseBuffer2 = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R16G16B16A16_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, autoGenerateMips: false, name: "IndirectDiffuseBuffer2");
-                    m_IndirectDiffuseBuffer3 = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R16G16B16A16_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, autoGenerateMips: false, name: "IndirectDiffuseBuffer3");
-                    m_IndirectDiffuseHitPointBuffer = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R16G16_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, autoGenerateMips: false, name: "IndirectDiffuseHitBuffer");
-                }
-
                 m_RayTracingLightCluster.InitializeNonRenderGraphResources();
 
                 m_FlagMaskTextureRT = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R8_SNorm, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, name: "FlagMaskTexture");
             }
+
+            if (m_Asset.currentPlatformRenderPipelineSettings.supportSSGI)
+            {
+                m_IndirectDiffuseBuffer0 = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R16G16B16A16_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, autoGenerateMips: false, name: "IndirectDiffuseBuffer0");
+                m_IndirectDiffuseBuffer1 = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R16G16B16A16_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, autoGenerateMips: false, name: "IndirectDiffuseBuffer1");
+                m_IndirectDiffuseBuffer2 = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R16G16B16A16_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, autoGenerateMips: false, name: "IndirectDiffuseBuffer2");
+                m_IndirectDiffuseBuffer3 = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R16G16B16A16_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, autoGenerateMips: false, name: "IndirectDiffuseBuffer3");
+                m_IndirectDiffuseHitPointBuffer = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R16G16_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, autoGenerateMips: false, name: "IndirectDiffuseHitBuffer");
+            }
         }
 
         void GetOrCreateDebugTextures()
@@ -850,24 +849,18 @@ void DestroyRenderTextures()
             {
                 m_RaytracingGBufferManager.DestroyBuffers();
                 m_RayCountManager.CleanupNonRenderGraphResources();
-
-                if (m_IndirectDiffuseBuffer0 != null)
-                    RTHandles.Release(m_IndirectDiffuseBuffer0);
-                if (m_IndirectDiffuseBuffer1 != null)
-                    RTHandles.Release(m_IndirectDiffuseBuffer1);
-                if (m_IndirectDiffuseBuffer2 != null)
-                    RTHandles.Release(m_IndirectDiffuseBuffer2);
-                if (m_IndirectDiffuseBuffer3 != null)
-                    RTHandles.Release(m_IndirectDiffuseBuffer3);
-                if (m_IndirectDiffuseHitPointBuffer != null)
-                    RTHandles.Release(m_IndirectDiffuseHitPointBuffer);
-
                 m_RayTracingLightCluster.CleanupNonRenderGraphResources();
 
                 RTHandles.Release(m_FlagMaskTextureRT);
 
                 RaytracingManagerCleanupNonRenderGraphResources();
             }
+
+            RTHandles.Release(m_IndirectDiffuseBuffer0);
+            RTHandles.Release(m_IndirectDiffuseBuffer1);
+            RTHandles.Release(m_IndirectDiffuseBuffer2);
+            RTHandles.Release(m_IndirectDiffuseBuffer3);
+            RTHandles.Release(m_IndirectDiffuseHitPointBuffer);
         }
 
         void SetRenderingFeatures()