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

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• Hash : aef95dec
  Author :
  Date : 2014-09-05T10:12:41
  

  Use attachment binding points for dynamic PS key.
  
  Because our output signature is only dependent on the arrangment
  of the attachments, not the attachment type, use the output
  layout key for now. If we need to, we could store both, in the
  future.
  
  BUG=angle:705
  
  Change-Id: I3b99954d30b91a4741fdd6f48f8ffcf88c0bea7a
  Reviewed-on: https://chromium-review.googlesource.com/215846
  Tested-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• 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 "common/angleutils.h"
  #include "common/RefCountObject.h"
  
  #include "angle_gl.h"
  
  namespace rx
  {
  class Renderer;
  class RenderTarget;
  class TextureStorage;
  }
  
  namespace gl
  {
  class Texture;
  class Texture2D;
  class TextureCubeMap;
  class Texture3D;
  class Texture2DArray;
  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: Our old naming scheme used the term "Renderbuffer" for both GL renderbuffers and for
  // framebuffer attachments, which confused their usage.
  
  class FramebufferAttachment
  {
    public:
      explicit FramebufferAttachment(GLenum binding);
      virtual ~FramebufferAttachment();
  
      // Helper methods
      GLuint getRedSize() const;
      GLuint getGreenSize() const;
      GLuint getBlueSize() const;
      GLuint getAlphaSize() const;
      GLuint getDepthSize() const;
      GLuint getStencilSize() const;
      GLenum getComponentType() const;
      GLenum getColorEncoding() const;
      bool isTexture() const;
  
      bool isTextureWithId(GLuint textureId) const { return isTexture() && id() == textureId; }
      bool isRenderbufferWithId(GLuint renderbufferId) const { return !isTexture() && id() == renderbufferId; }
  
      GLenum getBinding() const { return mBinding; }
  
      // Child class interface
      virtual rx::RenderTarget *getRenderTarget() = 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(FramebufferAttachment);
  
      GLenum mBinding;
  };
  
  class TextureAttachment : public FramebufferAttachment
  {
    public:
      TextureAttachment(GLenum binding);
  
      rx::TextureStorage *getTextureStorage();
      virtual GLsizei getSamples() const;
      virtual GLuint id() const;
      virtual unsigned int getTextureSerial() const;
  
    protected:
      virtual Texture *getTexture() const = 0;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(TextureAttachment);
  };
  
  class Texture2DAttachment : public TextureAttachment
  {
    public:
      Texture2DAttachment(GLenum binding, Texture2D *texture, GLint level);
  
      virtual ~Texture2DAttachment();
  
      rx::RenderTarget *getRenderTarget();
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual GLenum getActualFormat() const;
  
      virtual unsigned int getSerial() const;
  
      virtual GLenum type() const;
      virtual GLint mipLevel() const;
      virtual GLint layer() const;
      virtual Texture *getTexture() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Texture2DAttachment);
  
      BindingPointer<Texture2D> mTexture2D;
      const GLint mLevel;
  };
  
  class TextureCubeMapAttachment : public TextureAttachment
  {
    public:
      TextureCubeMapAttachment(GLenum binding, TextureCubeMap *texture, GLenum faceTarget, GLint level);
  
      virtual ~TextureCubeMapAttachment();
  
      rx::RenderTarget *getRenderTarget();
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual GLenum getActualFormat() const;
  
      virtual unsigned int getSerial() const;
  
      virtual GLenum type() const;
      virtual GLint mipLevel() const;
      virtual GLint layer() const;
      virtual Texture *getTexture() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(TextureCubeMapAttachment);
  
      BindingPointer<TextureCubeMap> mTextureCubeMap;
      const GLint mLevel;
      const GLenum mFaceTarget;
  };
  
  class Texture3DAttachment : public TextureAttachment
  {
    public:
      Texture3DAttachment(GLenum binding, Texture3D *texture, GLint level, GLint layer);
  
      virtual ~Texture3DAttachment();
  
      rx::RenderTarget *getRenderTarget();
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual GLenum getActualFormat() const;
  
      virtual unsigned int getSerial() const;
  
      virtual GLenum type() const;
      virtual GLint mipLevel() const;
      virtual GLint layer() const;
      virtual Texture *getTexture() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Texture3DAttachment);
  
      BindingPointer<Texture3D> mTexture3D;
      const GLint mLevel;
      const GLint mLayer;
  };
  
  class Texture2DArrayAttachment : public TextureAttachment
  {
    public:
      Texture2DArrayAttachment(GLenum binding, Texture2DArray *texture, GLint level, GLint layer);
  
      virtual ~Texture2DArrayAttachment();
  
      rx::RenderTarget *getRenderTarget();
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual GLenum getActualFormat() const;
  
      virtual unsigned int getSerial() const;
  
      virtual GLenum type() const;
      virtual GLint mipLevel() const;
      virtual GLint layer() const;
      virtual Texture *getTexture() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Texture2DArrayAttachment);
  
      BindingPointer<Texture2DArray> mTexture2DArray;
      const GLint mLevel;
      const GLint mLayer;
  };
  
  class RenderbufferAttachment : public FramebufferAttachment
  {
    public:
      RenderbufferAttachment(GLenum binding, Renderbuffer *renderbuffer);
  
      virtual ~RenderbufferAttachment();
  
      rx::RenderTarget *getRenderTarget();
      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_
  

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