DrawRectangle.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Math/MathFwd.h"
#include "RendererInterface.h"
 
class FRHICommandList;
class FSceneView;
class FShaderMapPointerTable;
 
template<typename ShaderType, typename PointerTableType> class TShaderRefBase;
template<typename ShaderType> using TShaderRef = TShaderRefBase<ShaderType, FShaderMapPointerTable>;
 
namespace UE::Renderer::PostProcess
{
    RENDERER_API void SetDrawRectangleParameters(
        FRHIBatchedShaderParameters& BatchedParameters,
        const FShader* VertexShader,
        float X,
        float Y,
        float SizeX,
        float SizeY,
        float U,
        float V,
        float SizeU,
        float SizeV,
        FIntPoint TargetSize,
        FIntPoint TextureSize);
 
    RENDERER_API void SetDrawRectangleParameters(FRHIBatchedShaderParameters& BatchedParameters, const FShader* VertexShader, const FIntPoint& ViewSize);
    RENDERER_API void SetDrawRectangleParameters(FRHIBatchedShaderParameters& BatchedParameters, const FShader* VertexShader, const FSceneView& View);
 
    RENDERER_API void DrawRectangle(
        FRHICommandList& RHICmdList,
        const TShaderRef<FShader>& VertexShader,
        float X,
        float Y,
        float SizeX,
        float SizeY,
        float U,
        float V,
        float SizeU,
        float SizeV,
        FIntPoint TargetSize,
        FIntPoint TextureSize,
        EDrawRectangleFlags Flags = EDRF_Default,
        uint32 InstanceCount = 1
    );
 
    RENDERER_API void DrawRectangle(
        FRHICommandList& RHICmdList,
        const TShaderRef<FShader>& VertexShader,
        const FSceneView& View,
        EDrawRectangleFlags Flags = EDRF_Default,
        uint32 InstanceCount = 1
    );
 
    // NOTE: Assumes previously set PSO has PrimitiveType = PT_TriangleList
    RENDERER_API void DrawPostProcessPass(
        FRHICommandList& RHICmdList,
        const TShaderRef<FShader>& VertexShader,
        float X,
        float Y,
        float SizeX,
        float SizeY,
        float U,
        float V,
        float SizeU,
        float SizeV,
        FIntPoint TargetSize,
        FIntPoint TextureSize,
        int32 StereoViewIndex,
        bool bHasCustomMesh,
        EDrawRectangleFlags Flags = EDRF_Default
    );
}