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Source/Engine/Renderer/ReflectionsPass.h

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+// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#include "RendererPass.h"
+#include "Engine/Graphics/GPUPipelineStatePermutations.h"
+#include "Engine/Content/Assets/Model.h"
+#include "Engine/Content/Assets/Shader.h"
+
+// Reflections buffer format used for rendering env probes and screen space reflections
+#define REFLECTIONS_PASS_OUTPUT_FORMAT PixelFormat::R11G11B10_Float
+#define ENV_PROBES_RESOLUTION 128
+//#define ENV_PROBES_FORMAT PixelFormat::R11G11B10_Float
+#define ENV_PROBES_FORMAT PixelFormat::R8G8B8A8_UNorm
+
+#define GENERATE_GF_CACHE 0
+#define PRE_INTEGRATED_GF_ASSET_NAME TEXT("Engine/Textures/PreIntegratedGF")
+
+/// <summary>
+/// Reflections rendering service
+/// </summary>
+class ReflectionsPass : public RendererPass<ReflectionsPass>
+{
+private:
+
+    PACK_STRUCT(struct Data {
+        ProbeData PData;
+        Matrix WVP;
+        GBufferData GBuffer;
+    });
+
+    AssetReference<Shader> _shader;
+    GPUPipelineState* _psProbeNormal;
+    GPUPipelineState* _psProbeInverted;
+    GPUPipelineState* _psCombinePass;
+
+    AssetReference<Model> _sphereModel;
+    AssetReference<Texture> _preIntegratedGF;
+
+public:
+
+    /// <summary>
+    /// Init
+    /// </summary>
+    ReflectionsPass();
+
+public:
+
+    /// <summary>
+    /// Perform reflections pass rendering for the input task.
+    /// </summary>
+    /// <param name="renderContext">The rendering context.</param>
+    /// <param name="lightBuffer">The light buffer.</param>
+    void Render(RenderContext& renderContext, GPUTextureView* lightBuffer);
+
+public:
+
+    // [RendererPass]
+    String ToString() const override;
+    bool Init() override;
+    void Dispose() override;
+#if COMPILE_WITH_DEV_ENV
+    void OnShaderReloading(Asset* obj)
+    {
+        _psProbeNormal->ReleaseGPU();
+        _psProbeInverted->ReleaseGPU();
+        _psCombinePass->ReleaseGPU();
+        invalidateResources();
+    }
+#endif
+
+protected:
+
+    // [RendererPass]
+    bool setupResources() override;
+};