1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/libGLESv2/Renderbuffer.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,261 @@
1.4 +//
1.5 +// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
1.6 +// Use of this source code is governed by a BSD-style license that can be
1.7 +// found in the LICENSE file.
1.8 +//
1.9 +
1.10 +// Renderbuffer.h: Defines the wrapper class gl::Renderbuffer, as well as the
1.11 +// class hierarchy used to store its contents: RenderbufferStorage, Colorbuffer,
1.12 +// DepthStencilbuffer, Depthbuffer and Stencilbuffer. Implements GL renderbuffer
1.13 +// objects and related functionality. [OpenGL ES 2.0.24] section 4.4.3 page 108.
1.14 +
1.15 +#ifndef LIBGLESV2_RENDERBUFFER_H_
1.16 +#define LIBGLESV2_RENDERBUFFER_H_
1.17 +
1.18 +#define GL_APICALL
1.19 +#include <GLES2/gl2.h>
1.20 +
1.21 +#include "common/angleutils.h"
1.22 +#include "common/RefCountObject.h"
1.23 +
1.24 +namespace rx
1.25 +{
1.26 +class Renderer;
1.27 +class SwapChain;
1.28 +class RenderTarget;
1.29 +}
1.30 +
1.31 +namespace gl
1.32 +{
1.33 +class Texture2D;
1.34 +class TextureCubeMap;
1.35 +class Renderbuffer;
1.36 +class Colorbuffer;
1.37 +class DepthStencilbuffer;
1.38 +
1.39 +class RenderbufferInterface
1.40 +{
1.41 + public:
1.42 + RenderbufferInterface();
1.43 +
1.44 + virtual ~RenderbufferInterface() {};
1.45 +
1.46 + virtual void addProxyRef(const Renderbuffer *proxy);
1.47 + virtual void releaseProxy(const Renderbuffer *proxy);
1.48 +
1.49 + virtual rx::RenderTarget *getRenderTarget() = 0;
1.50 + virtual rx::RenderTarget *getDepthStencil() = 0;
1.51 +
1.52 + virtual GLsizei getWidth() const = 0;
1.53 + virtual GLsizei getHeight() const = 0;
1.54 + virtual GLenum getInternalFormat() const = 0;
1.55 + virtual GLenum getActualFormat() const = 0;
1.56 + virtual GLsizei getSamples() const = 0;
1.57 +
1.58 + GLuint getRedSize() const;
1.59 + GLuint getGreenSize() const;
1.60 + GLuint getBlueSize() const;
1.61 + GLuint getAlphaSize() const;
1.62 + GLuint getDepthSize() const;
1.63 + GLuint getStencilSize() const;
1.64 +
1.65 + virtual unsigned int getSerial() const = 0;
1.66 +
1.67 + private:
1.68 + DISALLOW_COPY_AND_ASSIGN(RenderbufferInterface);
1.69 +};
1.70 +
1.71 +class RenderbufferTexture2D : public RenderbufferInterface
1.72 +{
1.73 + public:
1.74 + RenderbufferTexture2D(Texture2D *texture, GLenum target);
1.75 +
1.76 + virtual ~RenderbufferTexture2D();
1.77 +
1.78 + void addProxyRef(const Renderbuffer *proxy);
1.79 + void releaseProxy(const Renderbuffer *proxy);
1.80 +
1.81 + rx::RenderTarget *getRenderTarget();
1.82 + rx::RenderTarget *getDepthStencil();
1.83 +
1.84 + virtual GLsizei getWidth() const;
1.85 + virtual GLsizei getHeight() const;
1.86 + virtual GLenum getInternalFormat() const;
1.87 + virtual GLenum getActualFormat() const;
1.88 + virtual GLsizei getSamples() const;
1.89 +
1.90 + virtual unsigned int getSerial() const;
1.91 +
1.92 + private:
1.93 + DISALLOW_COPY_AND_ASSIGN(RenderbufferTexture2D);
1.94 +
1.95 + BindingPointer <Texture2D> mTexture2D;
1.96 + GLenum mTarget;
1.97 +};
1.98 +
1.99 +class RenderbufferTextureCubeMap : public RenderbufferInterface
1.100 +{
1.101 + public:
1.102 + RenderbufferTextureCubeMap(TextureCubeMap *texture, GLenum target);
1.103 +
1.104 + virtual ~RenderbufferTextureCubeMap();
1.105 +
1.106 + void addProxyRef(const Renderbuffer *proxy);
1.107 + void releaseProxy(const Renderbuffer *proxy);
1.108 +
1.109 + rx::RenderTarget *getRenderTarget();
1.110 + rx::RenderTarget *getDepthStencil();
1.111 +
1.112 + virtual GLsizei getWidth() const;
1.113 + virtual GLsizei getHeight() const;
1.114 + virtual GLenum getInternalFormat() const;
1.115 + virtual GLenum getActualFormat() const;
1.116 + virtual GLsizei getSamples() const;
1.117 +
1.118 + virtual unsigned int getSerial() const;
1.119 +
1.120 + private:
1.121 + DISALLOW_COPY_AND_ASSIGN(RenderbufferTextureCubeMap);
1.122 +
1.123 + BindingPointer <TextureCubeMap> mTextureCubeMap;
1.124 + GLenum mTarget;
1.125 +};
1.126 +
1.127 +// A class derived from RenderbufferStorage is created whenever glRenderbufferStorage
1.128 +// is called. The specific concrete type depends on whether the internal format is
1.129 +// colour depth, stencil or packed depth/stencil.
1.130 +class RenderbufferStorage : public RenderbufferInterface
1.131 +{
1.132 + public:
1.133 + RenderbufferStorage();
1.134 +
1.135 + virtual ~RenderbufferStorage() = 0;
1.136 +
1.137 + virtual rx::RenderTarget *getRenderTarget();
1.138 + virtual rx::RenderTarget *getDepthStencil();
1.139 +
1.140 + virtual GLsizei getWidth() const;
1.141 + virtual GLsizei getHeight() const;
1.142 + virtual GLenum getInternalFormat() const;
1.143 + virtual GLenum getActualFormat() const;
1.144 + virtual GLsizei getSamples() const;
1.145 +
1.146 + virtual unsigned int getSerial() const;
1.147 +
1.148 + static unsigned int issueSerial();
1.149 + static unsigned int issueCubeSerials();
1.150 +
1.151 + protected:
1.152 + GLsizei mWidth;
1.153 + GLsizei mHeight;
1.154 + GLenum mInternalFormat;
1.155 + GLenum mActualFormat;
1.156 + GLsizei mSamples;
1.157 +
1.158 + private:
1.159 + DISALLOW_COPY_AND_ASSIGN(RenderbufferStorage);
1.160 +
1.161 + const unsigned int mSerial;
1.162 +
1.163 + static unsigned int mCurrentSerial;
1.164 +};
1.165 +
1.166 +// Renderbuffer implements the GL renderbuffer object.
1.167 +// It's only a proxy for a RenderbufferInterface instance; the internal object
1.168 +// can change whenever glRenderbufferStorage is called.
1.169 +class Renderbuffer : public RefCountObject
1.170 +{
1.171 + public:
1.172 + Renderbuffer(rx::Renderer *renderer, GLuint id, RenderbufferInterface *storage);
1.173 +
1.174 + virtual ~Renderbuffer();
1.175 +
1.176 + // These functions from RefCountObject are overloaded here because
1.177 + // Textures need to maintain their own count of references to them via
1.178 + // Renderbuffers/RenderbufferTextures. These functions invoke those
1.179 + // reference counting functions on the RenderbufferInterface.
1.180 + void addRef() const;
1.181 + void release() const;
1.182 +
1.183 + rx::RenderTarget *getRenderTarget();
1.184 + rx::RenderTarget *getDepthStencil();
1.185 +
1.186 + GLsizei getWidth() const;
1.187 + GLsizei getHeight() const;
1.188 + GLenum getInternalFormat() const;
1.189 + GLenum getActualFormat() const;
1.190 + GLuint getRedSize() const;
1.191 + GLuint getGreenSize() const;
1.192 + GLuint getBlueSize() const;
1.193 + GLuint getAlphaSize() const;
1.194 + GLuint getDepthSize() const;
1.195 + GLuint getStencilSize() const;
1.196 + GLsizei getSamples() const;
1.197 +
1.198 + unsigned int getSerial() const;
1.199 +
1.200 + void setStorage(RenderbufferStorage *newStorage);
1.201 +
1.202 + private:
1.203 + DISALLOW_COPY_AND_ASSIGN(Renderbuffer);
1.204 +
1.205 + RenderbufferInterface *mInstance;
1.206 +};
1.207 +
1.208 +class Colorbuffer : public RenderbufferStorage
1.209 +{
1.210 + public:
1.211 + Colorbuffer(rx::Renderer *renderer, rx::SwapChain *swapChain);
1.212 + Colorbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLenum format, GLsizei samples);
1.213 +
1.214 + virtual ~Colorbuffer();
1.215 +
1.216 + virtual rx::RenderTarget *getRenderTarget();
1.217 +
1.218 + private:
1.219 + DISALLOW_COPY_AND_ASSIGN(Colorbuffer);
1.220 +
1.221 + rx::RenderTarget *mRenderTarget;
1.222 +};
1.223 +
1.224 +class DepthStencilbuffer : public RenderbufferStorage
1.225 +{
1.226 + public:
1.227 + DepthStencilbuffer(rx::Renderer *renderer, rx::SwapChain *swapChain);
1.228 + DepthStencilbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLsizei samples);
1.229 +
1.230 + ~DepthStencilbuffer();
1.231 +
1.232 + virtual rx::RenderTarget *getDepthStencil();
1.233 +
1.234 + protected:
1.235 + rx::RenderTarget *mDepthStencil;
1.236 +
1.237 + private:
1.238 + DISALLOW_COPY_AND_ASSIGN(DepthStencilbuffer);
1.239 +};
1.240 +
1.241 +class Depthbuffer : public DepthStencilbuffer
1.242 +{
1.243 + public:
1.244 + Depthbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLsizei samples);
1.245 +
1.246 + virtual ~Depthbuffer();
1.247 +
1.248 + private:
1.249 + DISALLOW_COPY_AND_ASSIGN(Depthbuffer);
1.250 +};
1.251 +
1.252 +class Stencilbuffer : public DepthStencilbuffer
1.253 +{
1.254 + public:
1.255 + Stencilbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLsizei samples);
1.256 +
1.257 + virtual ~Stencilbuffer();
1.258 +
1.259 + private:
1.260 + DISALLOW_COPY_AND_ASSIGN(Stencilbuffer);
1.261 +};
1.262 +}
1.263 +
1.264 +#endif // LIBGLESV2_RENDERBUFFER_H_
