kc3-lang/angle/src/libGLESv2/FramebufferAttachment.h

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• Author : Jamie Madill
  Date : 2014-06-16 10:34:02
  Hash : 9c074a39
  Message : Add queries for level and layer to FBO attachments. BUG=angle:660 Change-Id: I03e76dd7743267dc0b57cf53a4d27cd75a5d5adf Reviewed-on: https://chromium-review.googlesource.com/201837 Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shannon Woods <shannonwoods@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>

• src/libGLESv2/FramebufferAttachment.h

• //
  // Copyright (c) 2014 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.
  //
  
  // FramebufferAttachment.h: Defines the wrapper class gl::FramebufferAttachment, as well as the
  // objects and related functionality. [OpenGL ES 2.0.24] section 4.4.3 page 108.
  
  #ifndef LIBGLESV2_FRAMEBUFFERATTACHMENT_H_
  #define LIBGLESV2_FRAMEBUFFERATTACHMENT_H_
  
  #include <GLES3/gl3.h>
  #include <GLES2/gl2.h>
  
  #include "common/angleutils.h"
  #include "common/RefCountObject.h"
  
  namespace rx
  {
  class Renderer;
  class RenderTarget;
  class TextureStorage;
  }
  
  namespace gl
  {
  class Texture2D;
  class TextureCubeMap;
  class Texture3D;
  class Texture2DArray;
  class FramebufferAttachmentImpl;
  class Renderbuffer;
  
  // FramebufferAttachment implements a GL framebuffer attachment.
  // Attachments are "light" containers, which store pointers to ref-counted GL objects.
  // We support GL texture (2D/3D/Cube/2D array) and renderbuffer object attachments.
  // Note: Renderbuffers are specialized storage for depth and stencil buffes. Our old
  // naming scheme used the term "Renderbuffer" for both GL renderbuffers and for
  // framebuffer attachments, which confused their usage.
  
  class FramebufferAttachment : public RefCountObject
  {
    public:
      FramebufferAttachment(GLuint id, FramebufferAttachmentImpl *storage);
  
      virtual ~FramebufferAttachment();
  
      // These functions from RefCountObject are overloaded here because
      // Textures need to maintain their own count of references to them via
      // Renderbuffers/RenderbufferTextures. These functions invoke those
      // reference counting functions on the FramebufferAttachmentImpl.
      void addRef() const;
      void release() const;
  
      rx::RenderTarget *getRenderTarget();
      rx::RenderTarget *getDepthStencil();
      rx::TextureStorage *getTextureStorage();
  
      GLsizei getWidth() const;
      GLsizei getHeight() const;
      GLenum getInternalFormat() const;
      GLenum getActualFormat() const;
      GLuint getRedSize(int clientVersion) const;
      GLuint getGreenSize(int clientVersion) const;
      GLuint getBlueSize(int clientVersion) const;
      GLuint getAlphaSize(int clientVersion) const;
      GLuint getDepthSize(int clientVersion) const;
      GLuint getStencilSize(int clientVersion) const;
      GLenum getComponentType(int clientVersion) const;
      GLenum getColorEncoding(int clientVersion) const;
      GLsizei getSamples() const;
      bool isTexture() const;
  
      unsigned int getSerial() const;
  
      GLuint id() const;
      GLenum type() const;
      GLint mipLevel() const;
      GLint layer() const;
      unsigned int getTextureSerial() const;
  
      void setImplementation(FramebufferAttachmentImpl *newImpl);
  
    private:
      DISALLOW_COPY_AND_ASSIGN(FramebufferAttachment);
  
      FramebufferAttachmentImpl *mImpl;
  };
  
  class FramebufferAttachmentImpl
  {
    public:
      FramebufferAttachmentImpl();
  
      virtual ~FramebufferAttachmentImpl() {};
  
      virtual void addProxyRef(const FramebufferAttachment *proxy);
      virtual void releaseProxy(const FramebufferAttachment *proxy);
  
      virtual rx::RenderTarget *getRenderTarget() = 0;
      virtual rx::RenderTarget *getDepthStencil() = 0;
      virtual rx::TextureStorage *getTextureStorage() = 0;
  
      virtual GLsizei getWidth() const = 0;
      virtual GLsizei getHeight() const = 0;
      virtual GLenum getInternalFormat() const = 0;
      virtual GLenum getActualFormat() const = 0;
      virtual GLsizei getSamples() const = 0;
  
      virtual unsigned int getSerial() const = 0;
  
      virtual GLuint id() const = 0;
      virtual GLenum type() const = 0;
      virtual GLint mipLevel() const = 0;
      virtual GLint layer() const = 0;
      virtual unsigned int getTextureSerial() const = 0;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(FramebufferAttachmentImpl);
  };
  
  class Texture2DAttachment : public FramebufferAttachmentImpl
  {
    public:
      Texture2DAttachment(Texture2D *texture, GLint level);
  
      virtual ~Texture2DAttachment();
  
      void addProxyRef(const FramebufferAttachment *proxy);
      void releaseProxy(const FramebufferAttachment *proxy);
  
      rx::RenderTarget *getRenderTarget();
      rx::RenderTarget *getDepthStencil();
      rx::TextureStorage *getTextureStorage();
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual GLenum getActualFormat() const;
      virtual GLsizei getSamples() const;
  
      virtual unsigned int getSerial() const;
  
      virtual GLuint id() const;
      virtual GLenum type() const;
      virtual GLint mipLevel() const;
      virtual GLint layer() const;
      virtual unsigned int getTextureSerial() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Texture2DAttachment);
  
      BindingPointer <Texture2D> mTexture2D;
      const GLint mLevel;
  };
  
  class TextureCubeMapAttachment : public FramebufferAttachmentImpl
  {
    public:
      TextureCubeMapAttachment(TextureCubeMap *texture, GLenum faceTarget, GLint level);
  
      virtual ~TextureCubeMapAttachment();
  
      void addProxyRef(const FramebufferAttachment *proxy);
      void releaseProxy(const FramebufferAttachment *proxy);
  
      rx::RenderTarget *getRenderTarget();
      rx::RenderTarget *getDepthStencil();
      rx::TextureStorage *getTextureStorage();
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual GLenum getActualFormat() const;
      virtual GLsizei getSamples() const;
  
      virtual unsigned int getSerial() const;
  
      virtual GLuint id() const;
      virtual GLenum type() const;
      virtual GLint mipLevel() const;
      virtual GLint layer() const;
      virtual unsigned int getTextureSerial() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(TextureCubeMapAttachment);
  
      BindingPointer <TextureCubeMap> mTextureCubeMap;
      const GLint mLevel;
      const GLenum mFaceTarget;
  };
  
  class Texture3DAttachment : public FramebufferAttachmentImpl
  {
    public:
      Texture3DAttachment(Texture3D *texture, GLint level, GLint layer);
  
      virtual ~Texture3DAttachment();
  
      void addProxyRef(const FramebufferAttachment *proxy);
      void releaseProxy(const FramebufferAttachment *proxy);
  
      rx::RenderTarget *getRenderTarget();
      rx::RenderTarget *getDepthStencil();
      rx::TextureStorage *getTextureStorage();
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual GLenum getActualFormat() const;
      virtual GLsizei getSamples() const;
  
      virtual unsigned int getSerial() const;
  
      virtual GLuint id() const;
      virtual GLenum type() const;
      virtual GLint mipLevel() const;
      virtual GLint layer() const;
      virtual unsigned int getTextureSerial() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Texture3DAttachment);
  
      BindingPointer<Texture3D> mTexture3D;
      const GLint mLevel;
      const GLint mLayer;
  };
  
  class Texture2DArrayAttachment : public FramebufferAttachmentImpl
  {
    public:
      Texture2DArrayAttachment(Texture2DArray *texture, GLint level, GLint layer);
  
      virtual ~Texture2DArrayAttachment();
  
      void addProxyRef(const FramebufferAttachment *proxy);
      void releaseProxy(const FramebufferAttachment *proxy);
  
      rx::RenderTarget *getRenderTarget();
      rx::RenderTarget *getDepthStencil();
      rx::TextureStorage *getTextureStorage();
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual GLenum getActualFormat() const;
      virtual GLsizei getSamples() const;
  
      virtual unsigned int getSerial() const;
  
      virtual GLuint id() const;
      virtual GLenum type() const;
      virtual GLint mipLevel() const;
      virtual GLint layer() const;
      virtual unsigned int getTextureSerial() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Texture2DArrayAttachment);
  
      BindingPointer<Texture2DArray> mTexture2DArray;
      const GLint mLevel;
      const GLint mLayer;
  };
  
  class RenderbufferAttachment : public FramebufferAttachmentImpl
  {
    public:
      RenderbufferAttachment(Renderbuffer *renderbuffer);
  
      virtual ~RenderbufferAttachment();
  
      rx::RenderTarget *getRenderTarget();
      rx::RenderTarget *getDepthStencil();
      rx::TextureStorage *getTextureStorage();
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual GLenum getActualFormat() const;
      virtual GLsizei getSamples() const;
  
      virtual unsigned int getSerial() const;
  
      virtual GLuint id() const;
      virtual GLenum type() const;
      virtual GLint mipLevel() const;
      virtual GLint layer() const;
      virtual unsigned int getTextureSerial() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(RenderbufferAttachment);
  
      BindingPointer<Renderbuffer> mRenderbuffer;
  };
  
  }
  
  #endif // LIBGLESV2_FRAMEBUFFERATTACHMENT_H_