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//
// Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// TextureStorage.h: Defines the abstract rx::TextureStorageInterface class and its concrete derived
// classes TextureStorageInterface2D and TextureStorageInterfaceCube, which act as the interface to the
// GPU-side texture.
#ifndef LIBGLESV2_RENDERER_TEXTURESTORAGE_H_
#define LIBGLESV2_RENDERER_TEXTURESTORAGE_H_
#include "common/debug.h"
namespace rx
{
class Renderer;
class SwapChain;
class RenderTarget;
class Blit;
class TextureStorage
{
public:
TextureStorage() {};
virtual ~TextureStorage() {};
virtual int getLodOffset() const = 0;
virtual bool isRenderTarget() const = 0;
virtual bool isManaged() const = 0;
virtual int levelCount() = 0;
virtual RenderTarget *getRenderTarget() = 0;
virtual RenderTarget *getRenderTarget(GLenum faceTarget) = 0;
virtual void generateMipmap(int level) = 0;
virtual void generateMipmap(int face, int level) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(TextureStorage);
};
class TextureStorageInterface
{
public:
TextureStorageInterface();
virtual ~TextureStorageInterface();
TextureStorage *getStorageInstance() { return mInstance; }
unsigned int getTextureSerial() const;
virtual unsigned int getRenderTargetSerial(GLenum target) const = 0;
virtual int getLodOffset() const;
virtual bool isRenderTarget() const;
virtual bool isManaged() const;
virtual int levelCount();
protected:
TextureStorage *mInstance;
private:
DISALLOW_COPY_AND_ASSIGN(TextureStorageInterface);
const unsigned int mTextureSerial;
static unsigned int issueTextureSerial();
static unsigned int mCurrentTextureSerial;
};
class TextureStorageInterface2D : public TextureStorageInterface
{
public:
TextureStorageInterface2D(Renderer *renderer, SwapChain *swapchain);
TextureStorageInterface2D(Renderer *renderer, int levels, GLenum internalformat, GLenum usage, bool forceRenderable, GLsizei width, GLsizei height);
virtual ~TextureStorageInterface2D();
void generateMipmap(int level);
RenderTarget *getRenderTarget() const;
virtual unsigned int getRenderTargetSerial(GLenum target) const;
private:
DISALLOW_COPY_AND_ASSIGN(TextureStorageInterface2D);
const unsigned int mRenderTargetSerial;
};
class TextureStorageInterfaceCube : public TextureStorageInterface
{
public:
TextureStorageInterfaceCube(Renderer *renderer, int levels, GLenum internalformat, GLenum usage, bool forceRenderable, int size);
virtual ~TextureStorageInterfaceCube();
void generateMipmap(int face, int level);
RenderTarget *getRenderTarget(GLenum faceTarget) const;
virtual unsigned int getRenderTargetSerial(GLenum target) const;
private:
DISALLOW_COPY_AND_ASSIGN(TextureStorageInterfaceCube);
const unsigned int mFirstRenderTargetSerial;
};
}
#endif // LIBGLESV2_RENDERER_TEXTURESTORAGE_H_
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