1 // 2 // Copyright (c) 2002-2013 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 // Framebuffer.h: Defines the gl::Framebuffer class. Implements GL framebuffer 8 // objects and related functionality. [OpenGL ES 2.0.24] section 4.4 page 105. 9 10 #ifndef LIBGLESV2_FRAMEBUFFER_H_ 11 #define LIBGLESV2_FRAMEBUFFER_H_ 12 13 #include <vector> 14 15 #include "common/angleutils.h" 16 #include "common/RefCountObject.h" 17 #include "constants.h" 18 19 namespace rx 20 { 21 class Renderer; 22 } 23 24 namespace gl 25 { 26 class FramebufferAttachment; 27 class Colorbuffer; 28 class Depthbuffer; 29 class Stencilbuffer; 30 class DepthStencilbuffer; 31 struct Caps; 32 33 typedef std::vector<FramebufferAttachment *> ColorbufferInfo; 34 35 class Framebuffer 36 { 37 public: 38 Framebuffer(rx::Renderer *renderer, GLuint id); 39 40 virtual ~Framebuffer(); 41 id()42 GLuint id() const { return mId; } 43 44 void setColorbuffer(unsigned int colorAttachment, GLenum type, GLuint colorbuffer, GLint level, GLint layer); 45 void setDepthbuffer(GLenum type, GLuint depthbuffer, GLint level, GLint layer); 46 void setStencilbuffer(GLenum type, GLuint stencilbuffer, GLint level, GLint layer); 47 void setDepthStencilBuffer(GLenum type, GLuint depthStencilBuffer, GLint level, GLint layer); 48 49 void detachTexture(GLuint texture); 50 void detachRenderbuffer(GLuint renderbuffer); 51 52 FramebufferAttachment *getColorbuffer(unsigned int colorAttachment) const; 53 FramebufferAttachment *getDepthbuffer() const; 54 FramebufferAttachment *getStencilbuffer() const; 55 FramebufferAttachment *getDepthStencilBuffer() const; 56 FramebufferAttachment *getDepthOrStencilbuffer() const; 57 FramebufferAttachment *getReadColorbuffer() const; 58 GLenum getReadColorbufferType() const; 59 FramebufferAttachment *getFirstColorbuffer() const; 60 61 virtual FramebufferAttachment *getAttachment(GLenum attachment) const; 62 63 GLenum getDrawBufferState(unsigned int colorAttachment) const; 64 void setDrawBufferState(unsigned int colorAttachment, GLenum drawBuffer); 65 66 bool isEnabledColorAttachment(unsigned int colorAttachment) const; 67 bool hasEnabledColorAttachment() const; 68 bool hasStencil() const; 69 int getSamples() const; 70 bool usingExtendedDrawBuffers() const; 71 72 virtual GLenum completeness() const; 73 bool hasValidDepthStencil() const; 74 75 void invalidate(const Caps &caps, GLsizei numAttachments, const GLenum *attachments); 76 void invalidateSub(const Caps &caps, GLsizei numAttachments, const GLenum *attachments, 77 GLint x, GLint y, GLsizei width, GLsizei height); 78 79 // Use this method to retrieve the color buffer map when doing rendering. 80 // It will apply a workaround for poor shader performance on some systems 81 // by compacting the list to skip NULL values. 82 ColorbufferInfo getColorbuffersForRender() const; 83 84 protected: 85 rx::Renderer *mRenderer; 86 87 GLuint mId; 88 89 FramebufferAttachment *mColorbuffers[IMPLEMENTATION_MAX_DRAW_BUFFERS]; 90 GLenum mDrawBufferStates[IMPLEMENTATION_MAX_DRAW_BUFFERS]; 91 GLenum mReadBufferState; 92 93 FramebufferAttachment *mDepthbuffer; 94 FramebufferAttachment *mStencilbuffer; 95 96 private: 97 DISALLOW_COPY_AND_ASSIGN(Framebuffer); 98 99 FramebufferAttachment *createAttachment(GLenum binding, GLenum type, GLuint handle, GLint level, GLint layer) const; 100 }; 101 102 class DefaultFramebuffer : public Framebuffer 103 { 104 public: 105 DefaultFramebuffer(rx::Renderer *Renderer, Colorbuffer *colorbuffer, DepthStencilbuffer *depthStencil); 106 107 virtual GLenum completeness() const; 108 virtual FramebufferAttachment *getAttachment(GLenum attachment) const; 109 110 private: 111 DISALLOW_COPY_AND_ASSIGN(DefaultFramebuffer); 112 }; 113 114 } 115 116 namespace rx 117 { 118 class RenderTarget; 119 120 // TODO: place this in FramebufferD3D.h 121 RenderTarget *GetAttachmentRenderTarget(gl::FramebufferAttachment *attachment); 122 unsigned int GetAttachmentSerial(gl::FramebufferAttachment *attachment); 123 124 } 125 126 #endif // LIBGLESV2_FRAMEBUFFER_H_ 127