// Copyright Epic Games, Inc. All Rights Reserved.

/*==============================================================================
        Texture2DPreview.h: Definitions for previewing 2d textures.
==============================================================================*/

#pragma once

#include "CoreMinimal.h"
#include "BatchedElements.h"

/**
 * Batched element parameters for previewing 2d textures.
 */
class UNREALED_API FBatchedElementTexture2DPreviewParameters: public FBatchedElementParameters
{
public:
    FBatchedElementTexture2DPreviewParameters(float InMipLevel, float InLayerIndex, bool bInIsNormalMap, bool bInIsSingleChannel, bool bInIsSingleVTPhysicalSpace, bool bInIsVirtualTexture, bool bInIsTextureArray)
        : MipLevel(InMipLevel), LayerIndex(InLayerIndex), bIsNormalMap(bInIsNormalMap), bIsSingleChannelFormat(bInIsSingleChannel), bIsSingleVTPhysicalSpace(bInIsSingleVTPhysicalSpace), bIsVirtualTexture(bInIsVirtualTexture), bIsTextureArray(bInIsTextureArray)
    {
    }

    /** Binds vertex and pixel shaders for this element */
    virtual void BindShaders(FRHICommandList& RHICmdList, FGraphicsPipelineStateInitializer& GraphicsPSOInit, ERHIFeatureLevel::Type InFeatureLevel, const FMatrix& InTransform, const float InGamma, const FMatrix& ColorWeights, const FTexture* Texture) override;

private:
    /** Parameters that need to be passed to the shader */
    float MipLevel;
    float LayerIndex;
    bool bIsNormalMap;
    bool bIsSingleChannelFormat;
    bool bIsSingleVTPhysicalSpace;

    /** Parameters that are used to select a shader permutation */
    bool bIsVirtualTexture;
    bool bIsTextureArray;
};