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