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

#pragma once

#include "HAL/Platform.h"
#include "MuR/Image.h"
#include "MuR/Operations.h"
#include "MuR/Ptr.h"
#include "MuT/AST.h"


namespace mu
{
	struct FProgram;

	class ASTOpImagePixelFormat final : public ASTOp
	{
	public:

		ASTChild Source;
		EImageFormat Format = EImageFormat::None;
		EImageFormat FormatIfAlpha = EImageFormat::None;

	public:

		ASTOpImagePixelFormat();
		ASTOpImagePixelFormat(const ASTOpImagePixelFormat&) = delete;
		~ASTOpImagePixelFormat();

		virtual EOpType GetOpType() const override { return EOpType::IM_PIXELFORMAT; }
		virtual uint64 Hash() const override;
		virtual bool IsEqual(const ASTOp& otherUntyped) const override;
		virtual Ptr<ASTOp> Clone(MapChildFuncRef mapChild) const override;
		virtual void ForEachChild(const TFunctionRef<void(ASTChild&)>) override;
		virtual void Link(FProgram& program, FLinkerOptions* Options) override;
		virtual Ptr<ASTOp> OptimiseSemantic(const FModelOptimizationOptions& options, int32 Pass) const override;
		virtual Ptr<ASTOp> OptimiseSink(const FModelOptimizationOptions& options, FOptimizeSinkContext& context) const override;
		virtual FImageDesc GetImageDesc(bool returnBestOption, FGetImageDescContext* context) const override;
		virtual void GetLayoutBlockSize(int* pBlockX, int* pBlockY) override;
		virtual bool IsImagePlainConstant(FVector4f& colour) const override;
		virtual Ptr<ImageSizeExpression> GetImageSizeExpression() const override;
		virtual FSourceDataDescriptor GetSourceDataDescriptor(FGetSourceDataDescriptorContext*) const override;

	};

}