kc3-lang/angle/src/libGLESv2/renderer/TextureStorage.h

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• Hash : 8040f57d
  Author :
  Date : 2013-07-25T16:49:54
  

  Updated Renderbuffers, Textures and TextureStorageInterface to be aware of render targets which are based on miplevels and layers other than zero.
  
  TRAC #23470
  
  Signed-off-by: Jamie Madill
  Signed-off-by: Shannon Woods
  Author: Geoff Lang
  

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• src/libGLESv2/renderer/TextureStorage.h

• //
  // Copyright (c) 2002-2013 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 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(int level) = 0;
      virtual RenderTarget *getRenderTargetFace(GLenum faceTarget, int level) = 0;
      virtual RenderTarget *getRenderTargetLayer(int mipLevel, int layer) = 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 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(GLint level) const;
  
      unsigned int getRenderTargetSerial(GLint level) const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(TextureStorageInterface2D);
  
      unsigned int mFirstRenderTargetSerial;
  };
  
  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, GLint level) const;
  
      virtual unsigned int getRenderTargetSerial(GLenum target, GLint level) const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(TextureStorageInterfaceCube);
  
      unsigned int mFirstRenderTargetSerial;
  };
  
  class TextureStorageInterface3D : public TextureStorageInterface
  {
    public:
      TextureStorageInterface3D(Renderer *renderer, int levels, GLenum internalformat, GLenum usage,
                                GLsizei width, GLsizei height, GLsizei depth);
      virtual ~TextureStorageInterface3D();
  
      void generateMipmap(int level);
      RenderTarget *getRenderTarget(GLint level, GLint layer) const;
  
      virtual unsigned int getRenderTargetSerial(GLint level, GLint layer) const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(TextureStorageInterface3D);
  
      unsigned int mLevels;
      unsigned int mFirstRenderTargetSerial;
  };
  
  class TextureStorageInterface2DArray : public TextureStorageInterface
  {
    public:
      TextureStorageInterface2DArray(Renderer *renderer, int levels, GLenum internalformat, GLenum usage,
                                GLsizei width, GLsizei height, GLsizei depth);
      virtual ~TextureStorageInterface2DArray();
  
      void generateMipmap(int level);
      RenderTarget *getRenderTarget(GLint level, GLint layer) const;
  
      virtual unsigned int getRenderTargetSerial(GLint level, GLint layer) const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(TextureStorageInterface2DArray);
  
      unsigned int mLevels;
      unsigned int mFirstRenderTargetSerial;
  };
  
  }
  
  #endif // LIBGLESV2_RENDERER_TEXTURESTORAGE_H_
  

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