1 // 2 // Copyright (c) 2014 The ANGLE Project Authors. All rights reserved. 3 // Use of this source code is governed by a BSD-style license that can be 4 // found in the LICENSE file. 5 // 6 7 // FramebufferAttachment.h: Defines the wrapper class gl::FramebufferAttachment, as well as the 8 // objects and related functionality. [OpenGL ES 2.0.24] section 4.4.3 page 108. 9 10 #ifndef LIBGLESV2_FRAMEBUFFERATTACHMENT_H_ 11 #define LIBGLESV2_FRAMEBUFFERATTACHMENT_H_ 12 13 #include "common/angleutils.h" 14 #include "common/RefCountObject.h" 15 #include "Texture.h" 16 17 #include "angle_gl.h" 18 19 namespace rx 20 { 21 class Renderer; 22 class RenderTarget; 23 class TextureStorage; 24 } 25 26 namespace gl 27 { 28 class Renderbuffer; 29 30 // FramebufferAttachment implements a GL framebuffer attachment. 31 // Attachments are "light" containers, which store pointers to ref-counted GL objects. 32 // We support GL texture (2D/3D/Cube/2D array) and renderbuffer object attachments. 33 // Note: Our old naming scheme used the term "Renderbuffer" for both GL renderbuffers and for 34 // framebuffer attachments, which confused their usage. 35 36 class FramebufferAttachment 37 { 38 public: 39 explicit FramebufferAttachment(GLenum binding); 40 virtual ~FramebufferAttachment(); 41 42 // Helper methods 43 GLuint getRedSize() const; 44 GLuint getGreenSize() const; 45 GLuint getBlueSize() const; 46 GLuint getAlphaSize() const; 47 GLuint getDepthSize() const; 48 GLuint getStencilSize() const; 49 GLenum getComponentType() const; 50 GLenum getColorEncoding() const; 51 bool isTexture() const; 52 isTextureWithId(GLuint textureId)53 bool isTextureWithId(GLuint textureId) const { return isTexture() && id() == textureId; } isRenderbufferWithId(GLuint renderbufferId)54 bool isRenderbufferWithId(GLuint renderbufferId) const { return !isTexture() && id() == renderbufferId; } 55 getBinding()56 GLenum getBinding() const { return mBinding; } 57 58 // Child class interface 59 virtual GLsizei getWidth() const = 0; 60 virtual GLsizei getHeight() const = 0; 61 virtual GLenum getInternalFormat() const = 0; 62 virtual GLenum getActualFormat() const = 0; 63 virtual GLsizei getSamples() const = 0; 64 65 virtual GLuint id() const = 0; 66 virtual GLenum type() const = 0; 67 virtual GLint mipLevel() const = 0; 68 virtual GLint layer() const = 0; 69 70 virtual Texture *getTexture() = 0; 71 virtual const ImageIndex *getTextureImageIndex() const = 0; 72 virtual Renderbuffer *getRenderbuffer() = 0; 73 74 private: 75 DISALLOW_COPY_AND_ASSIGN(FramebufferAttachment); 76 77 GLenum mBinding; 78 }; 79 80 class TextureAttachment : public FramebufferAttachment 81 { 82 public: 83 TextureAttachment(GLenum binding, Texture *texture, const ImageIndex &index); 84 virtual ~TextureAttachment(); 85 86 virtual GLsizei getSamples() const; 87 virtual GLuint id() const; 88 89 virtual GLsizei getWidth() const; 90 virtual GLsizei getHeight() const; 91 virtual GLenum getInternalFormat() const; 92 virtual GLenum getActualFormat() const; 93 94 virtual GLenum type() const; 95 virtual GLint mipLevel() const; 96 virtual GLint layer() const; 97 98 virtual Texture *getTexture(); 99 virtual const ImageIndex *getTextureImageIndex() const; 100 virtual Renderbuffer *getRenderbuffer(); 101 102 private: 103 DISALLOW_COPY_AND_ASSIGN(TextureAttachment); 104 105 BindingPointer<Texture> mTexture; 106 ImageIndex mIndex; 107 }; 108 109 class RenderbufferAttachment : public FramebufferAttachment 110 { 111 public: 112 RenderbufferAttachment(GLenum binding, Renderbuffer *renderbuffer); 113 114 virtual ~RenderbufferAttachment(); 115 116 virtual GLsizei getWidth() const; 117 virtual GLsizei getHeight() const; 118 virtual GLenum getInternalFormat() const; 119 virtual GLenum getActualFormat() const; 120 virtual GLsizei getSamples() const; 121 122 virtual GLuint id() const; 123 virtual GLenum type() const; 124 virtual GLint mipLevel() const; 125 virtual GLint layer() const; 126 127 virtual Texture *getTexture(); 128 virtual const ImageIndex *getTextureImageIndex() const; 129 virtual Renderbuffer *getRenderbuffer(); 130 131 private: 132 DISALLOW_COPY_AND_ASSIGN(RenderbufferAttachment); 133 134 BindingPointer<Renderbuffer> mRenderbuffer; 135 }; 136 137 } 138 139 #endif // LIBGLESV2_FRAMEBUFFERATTACHMENT_H_ 140