Shading.hpp

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//
//  CeresEngine - A game development framework
//
//  Created by Rogiel Sulzbach.
//  Copyright (c) 2018-2022 Rogiel Sulzbach. All rights reserved.
//
 
#pragma once
 
#include "CeresEngine/Renderer/Forward.hpp"
 
#include "CeresEngine/Renderer/RenderGraph/RenderResource.hpp"
#include "CeresEngine/Renderer/RenderGraph/RenderTask.hpp"
 
namespace CeresEngine {
 
    class PBRDeferredLightingRenderTask final : public SimpleGraphicsRenderTask2 {
    private:
        RendererScene& mScene;
        RendererView& mView;
 
    public:
        struct Input {
            ImageRenderResourceRef normalAndRoughness;
 
            ImageRenderResourceRef albedoAndAmbientOcclusion;
 
            ImageRenderResourceRef emissionAndMetallic;
 
            ImageRenderResourceRef depth;
        } input;
 
        struct Output {
            ImageRenderResourceRef lighting;
        } output;
 
    private:
        GPUSamplerPtr mGeometrySampler;
 
        bool mClear;
 
    public:
        PBRDeferredLightingRenderTask(RenderGraph& renderGraph, RendererScene& scene, RendererView& view, bool clear);
        ~PBRDeferredLightingRenderTask() final;
 
    protected:
        void compile(RenderTaskCompiler& compiler) final;
 
        void initialize(GPUDevice& device) final;
 
        void execute(RenderGraphContext& context, GPUCommandBuffer& commandBuffer, GPURenderTarget& renderTarget,
            RendererGraphicsPipeline& rendererPipeline) final;
 
    protected:
        RendererShaderPtr createShader(RendererShaderManager& shaderManager, GPURenderPass& renderPass) final;
 
        RendererGraphicsPipelinePtr createGraphicsPipeline(RendererGraphicsPipelineManager& graphicsPipelineManager, RendererShader& shader,
            GPURenderPass& renderPass) final;
    };
 
    class IBLAmbientLightingRenderTask final : public SimpleGraphicsRenderTask {
    private:
        RendererScene& mScene;
        RendererView& mView;
 
    public:
        struct Input {
            ImageRenderResourceRef normalAndRoughness;
 
            ImageRenderResourceRef albedoAndAmbientOcclusion;
 
            ImageRenderResourceRef emissionAndMetallic;
 
            ImageRenderResourceRef depth;
        } input;
 
        struct Output {
            ImageRenderResourceRef lighting;
        } output;
 
    private:
        GPUSamplerPtr mGeometrySampler;
 
    public:
        IBLAmbientLightingRenderTask(RenderGraph& renderGraph, RendererScene& scene, RendererView& view);
        ~IBLAmbientLightingRenderTask() final;
 
    protected:
        void compile(RenderTaskCompiler& compiler) final;
 
        void initialize(GPUDevice& device) final;
 
        void execute(RenderGraphContext& context, GPUCommandBuffer& commandBuffer, GPURenderTarget& renderTarget, GPUGraphicsPipeline& pipeline) final;
 
    protected:
        GPUGraphicsPipelinePtr createGraphicsPipeline(GPUDevice& device, GPURenderPass& renderPass) final;
    };
 
    class SkyboxRenderTask final : public SimpleGraphicsRenderTask {
    private:
        RendererView& mView;
 
    public:
        struct Input {
            ImageRenderResourceRef depth;
        } input;
 
        struct Output {
            ImageRenderResourceRef lighting;
        } output;
 
    public:
        SkyboxRenderTask(RenderGraph& renderGraph, RendererView& view);
        ~SkyboxRenderTask() final;
 
    protected:
        void compile(RenderTaskCompiler& compiler) final;
 
        void execute(RenderGraphContext& context, GPUCommandBuffer& commandBuffer, GPURenderTarget& renderTarget, GPUGraphicsPipeline& pipeline) final;
 
    protected:
        GPUGraphicsPipelinePtr createGraphicsPipeline(GPUDevice& device, GPURenderPass& renderPass) final;
    };
 
} // namespace CeresEngine