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//    notice, this list of conditions and the following disclaimer.
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//    contributors may be used to endorse or promote products derived
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// Copyright (c) 2018 NVIDIA Corporation. All rights reserved.



#ifndef USER_RENDER_SPRITE_BUFFER_H
#define USER_RENDER_SPRITE_BUFFER_H

/*!
\file
\brief class UserRenderSpriteBuffer
*/

#include "RenderBufferData.h"
#include "UserRenderSpriteBufferDesc.h"

/**
\brief Cuda graphics resource
*/
typedef struct CUgraphicsResource_st* CUgraphicsResource;

namespace nvidia
{
namespace apex
{

PX_PUSH_PACK_DEFAULT

/**
\brief Sprite buffer data (deprecated)
*/
class PX_DEPRECATED RenderSpriteBufferData : public RenderBufferData<RenderSpriteSemantic, RenderSpriteSemantic::Enum>, public ModuleSpecificRenderBufferData
{
};

/**
\brief Used for storing per-sprite instance data for rendering.
*/
class UserRenderSpriteBuffer
{
public:
	virtual		~UserRenderSpriteBuffer() {}

	/**
	\brief Called when APEX wants to update the contents of the sprite buffer.

	The source data type is assumed to be the same as what was defined in the descriptor.
	APEX should call this function and supply data for ALL semantics that were originally
	requested during creation every time its called.

	\param [in] data				Contains the source data for the sprite buffer.
	\param [in] firstSprite			first sprite to start writing to.
	\param [in] numSprites			number of vertices to write.
	*/
	virtual void writeBuffer(const void* data, uint32_t firstSprite, uint32_t numSprites)
	{
		PX_UNUSED(data);
		PX_UNUSED(firstSprite);
		PX_UNUSED(numSprites);
	}

	///Get the low-level handle of the buffer resource
	///\return true if succeeded, false otherwise
	virtual bool getInteropResourceHandle(CUgraphicsResource& handle)
#if APEX_DEFAULT_NO_INTEROP_IMPLEMENTATION
	{
		PX_UNUSED(&handle);
		return false;
	}
#else
	= 0;
#endif

	/**
	\brief Get interop texture handle list
	*/
	virtual bool getInteropTextureHandleList(CUgraphicsResource* handleList)
	{
		PX_UNUSED(handleList);
		return false;
	}

	/**
	\brief Write data to the texture
	*/
	virtual void writeTexture(uint32_t textureId, uint32_t numSprites, const void* srcData, size_t srcSize)
	{
		PX_UNUSED(textureId);
		PX_UNUSED(numSprites);
		PX_UNUSED(srcData);
		PX_UNUSED(srcSize);

		PX_ALWAYS_ASSERT();
	}
};

PX_POP_PACK

}
} // end namespace nvidia::apex

#endif // USER_RENDER_SPRITE_BUFFER_H