genesis-3d_engine/Engine/rendersystem/gles/TextureGLES.h

/****************************************************************************
Copyright (c) 2011-2013,WebJet Business Division,CYOU
 
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#ifndef __TextureGLES_H__
#define __TextureGLES_H__

#include "base/Texture.h"
#include "OpenGLES.h"
#include "util/dictionary.h"

namespace GLES
{
	struct TexInfo 
	{
		IndexT width;
		IndexT height;
	};

	class TextureGLES: public RenderBase::Texture
{
	__DeclareSubClass(TextureGLES, RenderBase::Texture );

public:
	TextureGLES();

	virtual ~TextureGLES();

	/// unload the resource, or cancel the pending load
	void Unload();

	// RenderBase::Texture::Setup
	void Setup(const GPtr<RenderBase::Texture>& srcTex);

	/// load Buffers;
	bool LoadBuffers();
	GLuint GetGLESTexture() const;
	void UpdateTexture(UpdateFunction texUpdateFunc, void* tag);
	void SetupFromGLESTexture(const GLuint& glTex);

	const bool IsUseMipMap() const;

	void ClearDummy();

	///// map the a texture mip level for CPU access
	virtual bool Map(IndexT mipLevel, MapType mapType, MapInfo& outMapInfo);
	///// unmap texture after CPU access
	virtual void Unmap(IndexT mipLevel);
	///// map a cube map face for CPU access
	virtual bool MapCubeFace(CubeFace face, IndexT mipLevel, MapType mapType, MapInfo& outMapInfo);
	///// unmap cube map face after CPU access
	virtual void UnmapCubeFace(CubeFace face, IndexT mipLevel);

	virtual void OnDeviceLost();
	virtual void OnDeviceReset();

	void SetTexAddresingModeU(IndexT u);

	IndexT GetTexAddresingModeU() const;

	void SetTexAddresingModeV(IndexT v);

	IndexT GetTexAddresingModeV() const;

	void SetTexFilterOp(IndexT texop);

	IndexT GetTexFilterOp() const;

protected:
	bool _LoadNormBuffer(ubyte* src, SizeT size );
	bool _LoadNormErrorBuffer();
	bool _LoadCubeBuffer(ubyte* src, SizeT size);
	bool _LoadCubeErrorBuffer();

	void _DeleteTextureObject();
	void _CreateTextureObject();

protected:
	GLuint m_textureGLES;
	bool   m_bMipMap;
	bool   m_bAttachedFBO;
	Util::Dictionary<IndexT, TexInfo> m_TextureMipmapInfo;

	IndexT m_CurrentAddresingModeU;
	IndexT m_CurrentAddresingModeV;
	IndexT m_CurrentTexFilterOp;
};

inline GLuint TextureGLES::GetGLESTexture() const
{
	return m_textureGLES;
}

inline void TextureGLES::SetupFromGLESTexture(const GLuint& glTex)
{
	n_assert(glTex != 0);

	m_textureGLES = glTex;
	this->SetType(Texture2D);

	m_bAttachedFBO = true;
}

inline const bool TextureGLES::IsUseMipMap() const
{
	return m_bMipMap;
}

inline void TextureGLES::ClearDummy()
{
	if (m_bAttachedFBO)
	{
		m_textureGLES = 0;
	}
}

inline void TextureGLES::SetTexAddresingModeU(IndexT u)
{
	m_CurrentAddresingModeU = u;
}

inline IndexT TextureGLES::GetTexAddresingModeU() const
{
	return m_CurrentAddresingModeU;
}

inline void TextureGLES::SetTexAddresingModeV(IndexT v)
{
	m_CurrentAddresingModeV = v;
}

inline IndexT TextureGLES::GetTexAddresingModeV() const
{
	return m_CurrentAddresingModeV;
}

inline void TextureGLES::SetTexFilterOp(IndexT texop)
{
	m_CurrentTexFilterOp = texop;
}

inline IndexT TextureGLES::GetTexFilterOp() const
{
	return m_CurrentTexFilterOp;
}

}


#endif