michael@0: #include "precompiled.h"
michael@0: //
michael@0: // Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: //
michael@0: 
michael@0: // Renderbuffer.cpp: the gl::Renderbuffer class and its derived classes
michael@0: // Colorbuffer, Depthbuffer and Stencilbuffer. Implements GL renderbuffer
michael@0: // objects and related functionality. [OpenGL ES 2.0.24] section 4.4.3 page 108.
michael@0: 
michael@0: #include "libGLESv2/Renderbuffer.h"
michael@0: #include "libGLESv2/renderer/RenderTarget.h"
michael@0: 
michael@0: #include "libGLESv2/Texture.h"
michael@0: #include "libGLESv2/renderer/Renderer.h"
michael@0: #include "libGLESv2/utilities.h"
michael@0: 
michael@0: namespace gl
michael@0: {
michael@0: unsigned int RenderbufferStorage::mCurrentSerial = 1;
michael@0: 
michael@0: RenderbufferInterface::RenderbufferInterface()
michael@0: {
michael@0: }
michael@0: 
michael@0: // The default case for classes inherited from RenderbufferInterface is not to
michael@0: // need to do anything upon the reference count to the parent Renderbuffer incrementing
michael@0: // or decrementing. 
michael@0: void RenderbufferInterface::addProxyRef(const Renderbuffer *proxy)
michael@0: {
michael@0: }
michael@0: 
michael@0: void RenderbufferInterface::releaseProxy(const Renderbuffer *proxy)
michael@0: {
michael@0: }
michael@0: 
michael@0: GLuint RenderbufferInterface::getRedSize() const
michael@0: {
michael@0:     return gl::GetRedSize(getActualFormat());
michael@0: }
michael@0: 
michael@0: GLuint RenderbufferInterface::getGreenSize() const
michael@0: {
michael@0:     return gl::GetGreenSize(getActualFormat());
michael@0: }
michael@0: 
michael@0: GLuint RenderbufferInterface::getBlueSize() const
michael@0: {
michael@0:     return gl::GetBlueSize(getActualFormat());
michael@0: }
michael@0: 
michael@0: GLuint RenderbufferInterface::getAlphaSize() const
michael@0: {
michael@0:     return gl::GetAlphaSize(getActualFormat());
michael@0: }
michael@0: 
michael@0: GLuint RenderbufferInterface::getDepthSize() const
michael@0: {
michael@0:     return gl::GetDepthSize(getActualFormat());
michael@0: }
michael@0: 
michael@0: GLuint RenderbufferInterface::getStencilSize() const
michael@0: {
michael@0:     return gl::GetStencilSize(getActualFormat());
michael@0: }
michael@0: 
michael@0: ///// RenderbufferTexture2D Implementation ////////
michael@0: 
michael@0: RenderbufferTexture2D::RenderbufferTexture2D(Texture2D *texture, GLenum target) : mTarget(target)
michael@0: {
michael@0:     mTexture2D.set(texture);
michael@0: }
michael@0: 
michael@0: RenderbufferTexture2D::~RenderbufferTexture2D()
michael@0: {
michael@0:     mTexture2D.set(NULL);
michael@0: }
michael@0: 
michael@0: // Textures need to maintain their own reference count for references via
michael@0: // Renderbuffers acting as proxies. Here, we notify the texture of a reference.
michael@0: void RenderbufferTexture2D::addProxyRef(const Renderbuffer *proxy)
michael@0: {
michael@0:     mTexture2D->addProxyRef(proxy);
michael@0: }
michael@0: 
michael@0: void RenderbufferTexture2D::releaseProxy(const Renderbuffer *proxy)
michael@0: {
michael@0:     mTexture2D->releaseProxy(proxy);
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *RenderbufferTexture2D::getRenderTarget()
michael@0: {
michael@0:     return mTexture2D->getRenderTarget(mTarget);
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *RenderbufferTexture2D::getDepthStencil()
michael@0: {
michael@0:     return mTexture2D->getDepthStencil(mTarget);
michael@0: }
michael@0: 
michael@0: GLsizei RenderbufferTexture2D::getWidth() const
michael@0: {
michael@0:     return mTexture2D->getWidth(0);
michael@0: }
michael@0: 
michael@0: GLsizei RenderbufferTexture2D::getHeight() const
michael@0: {
michael@0:     return mTexture2D->getHeight(0);
michael@0: }
michael@0: 
michael@0: GLenum RenderbufferTexture2D::getInternalFormat() const
michael@0: {
michael@0:     return mTexture2D->getInternalFormat(0);
michael@0: }
michael@0: 
michael@0: GLenum RenderbufferTexture2D::getActualFormat() const
michael@0: {
michael@0:     return mTexture2D->getActualFormat(0);
michael@0: }
michael@0: 
michael@0: GLsizei RenderbufferTexture2D::getSamples() const
michael@0: {
michael@0:     return 0;
michael@0: }
michael@0: 
michael@0: unsigned int RenderbufferTexture2D::getSerial() const
michael@0: {
michael@0:     return mTexture2D->getRenderTargetSerial(mTarget);
michael@0: }
michael@0: 
michael@0: ///// RenderbufferTextureCubeMap Implementation ////////
michael@0: 
michael@0: RenderbufferTextureCubeMap::RenderbufferTextureCubeMap(TextureCubeMap *texture, GLenum target) : mTarget(target)
michael@0: {
michael@0:     mTextureCubeMap.set(texture);
michael@0: }
michael@0: 
michael@0: RenderbufferTextureCubeMap::~RenderbufferTextureCubeMap()
michael@0: {
michael@0:     mTextureCubeMap.set(NULL);
michael@0: }
michael@0: 
michael@0: // Textures need to maintain their own reference count for references via
michael@0: // Renderbuffers acting as proxies. Here, we notify the texture of a reference.
michael@0: void RenderbufferTextureCubeMap::addProxyRef(const Renderbuffer *proxy)
michael@0: {
michael@0:     mTextureCubeMap->addProxyRef(proxy);
michael@0: }
michael@0: 
michael@0: void RenderbufferTextureCubeMap::releaseProxy(const Renderbuffer *proxy)
michael@0: {
michael@0:     mTextureCubeMap->releaseProxy(proxy);
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *RenderbufferTextureCubeMap::getRenderTarget()
michael@0: {
michael@0:     return mTextureCubeMap->getRenderTarget(mTarget);
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *RenderbufferTextureCubeMap::getDepthStencil()
michael@0: {
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: GLsizei RenderbufferTextureCubeMap::getWidth() const
michael@0: {
michael@0:     return mTextureCubeMap->getWidth(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0);
michael@0: }
michael@0: 
michael@0: GLsizei RenderbufferTextureCubeMap::getHeight() const
michael@0: {
michael@0:     return mTextureCubeMap->getHeight(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0);
michael@0: }
michael@0: 
michael@0: GLenum RenderbufferTextureCubeMap::getInternalFormat() const
michael@0: {
michael@0:     return mTextureCubeMap->getInternalFormat(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0);
michael@0: }
michael@0: 
michael@0: GLenum RenderbufferTextureCubeMap::getActualFormat() const
michael@0: {
michael@0:     return mTextureCubeMap->getActualFormat(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0);
michael@0: }
michael@0: 
michael@0: GLsizei RenderbufferTextureCubeMap::getSamples() const
michael@0: {
michael@0:     return 0;
michael@0: }
michael@0: 
michael@0: unsigned int RenderbufferTextureCubeMap::getSerial() const
michael@0: {
michael@0:     return mTextureCubeMap->getRenderTargetSerial(mTarget);
michael@0: }
michael@0: 
michael@0: ////// Renderbuffer Implementation //////
michael@0: 
michael@0: Renderbuffer::Renderbuffer(rx::Renderer *renderer, GLuint id, RenderbufferInterface *instance) : RefCountObject(id)
michael@0: {
michael@0:     ASSERT(instance != NULL);
michael@0:     mInstance = instance;
michael@0: }
michael@0: 
michael@0: Renderbuffer::~Renderbuffer()
michael@0: {
michael@0:     delete mInstance;
michael@0: }
michael@0: 
michael@0: // The RenderbufferInterface contained in this Renderbuffer may need to maintain
michael@0: // its own reference count, so we pass it on here.
michael@0: void Renderbuffer::addRef() const
michael@0: {
michael@0:     mInstance->addProxyRef(this);
michael@0: 
michael@0:     RefCountObject::addRef();
michael@0: }
michael@0: 
michael@0: void Renderbuffer::release() const
michael@0: {
michael@0:     mInstance->releaseProxy(this);
michael@0: 
michael@0:     RefCountObject::release();
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *Renderbuffer::getRenderTarget()
michael@0: {
michael@0:     return mInstance->getRenderTarget();
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *Renderbuffer::getDepthStencil()
michael@0: {
michael@0:     return mInstance->getDepthStencil();
michael@0: }
michael@0: 
michael@0: GLsizei Renderbuffer::getWidth() const
michael@0: {
michael@0:     return mInstance->getWidth();
michael@0: }
michael@0: 
michael@0: GLsizei Renderbuffer::getHeight() const
michael@0: {
michael@0:     return mInstance->getHeight();
michael@0: }
michael@0: 
michael@0: GLenum Renderbuffer::getInternalFormat() const
michael@0: {
michael@0:     return mInstance->getInternalFormat();
michael@0: }
michael@0: 
michael@0: GLenum Renderbuffer::getActualFormat() const
michael@0: {
michael@0:     return mInstance->getActualFormat();
michael@0: }
michael@0: 
michael@0: GLuint Renderbuffer::getRedSize() const
michael@0: {
michael@0:     return mInstance->getRedSize();
michael@0: }
michael@0: 
michael@0: GLuint Renderbuffer::getGreenSize() const
michael@0: {
michael@0:     return mInstance->getGreenSize();
michael@0: }
michael@0: 
michael@0: GLuint Renderbuffer::getBlueSize() const
michael@0: {
michael@0:     return mInstance->getBlueSize();
michael@0: }
michael@0: 
michael@0: GLuint Renderbuffer::getAlphaSize() const
michael@0: {
michael@0:     return mInstance->getAlphaSize();
michael@0: }
michael@0: 
michael@0: GLuint Renderbuffer::getDepthSize() const
michael@0: {
michael@0:     return mInstance->getDepthSize();
michael@0: }
michael@0: 
michael@0: GLuint Renderbuffer::getStencilSize() const
michael@0: {
michael@0:     return mInstance->getStencilSize();
michael@0: }
michael@0: 
michael@0: GLsizei Renderbuffer::getSamples() const
michael@0: {
michael@0:     return mInstance->getSamples();
michael@0: }
michael@0: 
michael@0: unsigned int Renderbuffer::getSerial() const
michael@0: {
michael@0:     return mInstance->getSerial();
michael@0: }
michael@0: 
michael@0: void Renderbuffer::setStorage(RenderbufferStorage *newStorage)
michael@0: {
michael@0:     ASSERT(newStorage != NULL);
michael@0: 
michael@0:     delete mInstance;
michael@0:     mInstance = newStorage;
michael@0: }
michael@0: 
michael@0: RenderbufferStorage::RenderbufferStorage() : mSerial(issueSerial())
michael@0: {
michael@0:     mWidth = 0;
michael@0:     mHeight = 0;
michael@0:     mInternalFormat = GL_RGBA4;
michael@0:     mActualFormat = GL_RGBA8_OES;
michael@0:     mSamples = 0;
michael@0: }
michael@0: 
michael@0: RenderbufferStorage::~RenderbufferStorage()
michael@0: {
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *RenderbufferStorage::getRenderTarget()
michael@0: {
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *RenderbufferStorage::getDepthStencil()
michael@0: {
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: GLsizei RenderbufferStorage::getWidth() const
michael@0: {
michael@0:     return mWidth;
michael@0: }
michael@0: 
michael@0: GLsizei RenderbufferStorage::getHeight() const
michael@0: {
michael@0:     return mHeight;
michael@0: }
michael@0: 
michael@0: GLenum RenderbufferStorage::getInternalFormat() const
michael@0: {
michael@0:     return mInternalFormat;
michael@0: }
michael@0: 
michael@0: GLenum RenderbufferStorage::getActualFormat() const
michael@0: {
michael@0:     return mActualFormat;
michael@0: }
michael@0: 
michael@0: GLsizei RenderbufferStorage::getSamples() const
michael@0: {
michael@0:     return mSamples;
michael@0: }
michael@0: 
michael@0: unsigned int RenderbufferStorage::getSerial() const
michael@0: {
michael@0:     return mSerial;
michael@0: }
michael@0: 
michael@0: unsigned int RenderbufferStorage::issueSerial()
michael@0: {
michael@0:     return mCurrentSerial++;
michael@0: }
michael@0: 
michael@0: unsigned int RenderbufferStorage::issueCubeSerials()
michael@0: {
michael@0:     unsigned int firstSerial = mCurrentSerial;
michael@0:     mCurrentSerial += 6;
michael@0:     return firstSerial;
michael@0: }
michael@0: 
michael@0: Colorbuffer::Colorbuffer(rx::Renderer *renderer, rx::SwapChain *swapChain)
michael@0: {
michael@0:     mRenderTarget = renderer->createRenderTarget(swapChain, false); 
michael@0: 
michael@0:     if (mRenderTarget)
michael@0:     {
michael@0:         mWidth = mRenderTarget->getWidth();
michael@0:         mHeight = mRenderTarget->getHeight();
michael@0:         mInternalFormat = mRenderTarget->getInternalFormat();
michael@0:         mActualFormat = mRenderTarget->getActualFormat();
michael@0:         mSamples = mRenderTarget->getSamples();
michael@0:     }
michael@0: }
michael@0: 
michael@0: Colorbuffer::Colorbuffer(rx::Renderer *renderer, int width, int height, GLenum format, GLsizei samples) : mRenderTarget(NULL)
michael@0: {
michael@0:     mRenderTarget = renderer->createRenderTarget(width, height, format, samples, false);
michael@0: 
michael@0:     if (mRenderTarget)
michael@0:     {
michael@0:         mWidth = width;
michael@0:         mHeight = height;
michael@0:         mInternalFormat = format;
michael@0:         mActualFormat = mRenderTarget->getActualFormat();
michael@0:         mSamples = mRenderTarget->getSamples();
michael@0:     }
michael@0: }
michael@0: 
michael@0: Colorbuffer::~Colorbuffer()
michael@0: {
michael@0:     if (mRenderTarget)
michael@0:     {
michael@0:         delete mRenderTarget;
michael@0:     }
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *Colorbuffer::getRenderTarget()
michael@0: {
michael@0:     if (mRenderTarget)
michael@0:     {
michael@0:         return mRenderTarget;
michael@0:     }
michael@0: 
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: DepthStencilbuffer::DepthStencilbuffer(rx::Renderer *renderer, rx::SwapChain *swapChain)
michael@0: {
michael@0:     mDepthStencil = renderer->createRenderTarget(swapChain, true);
michael@0:     if (mDepthStencil)
michael@0:     {
michael@0:         mWidth = mDepthStencil->getWidth();
michael@0:         mHeight = mDepthStencil->getHeight();
michael@0:         mInternalFormat = mDepthStencil->getInternalFormat();
michael@0:         mSamples = mDepthStencil->getSamples();
michael@0:         mActualFormat = mDepthStencil->getActualFormat();
michael@0:     }
michael@0: }
michael@0: 
michael@0: DepthStencilbuffer::DepthStencilbuffer(rx::Renderer *renderer, int width, int height, GLsizei samples)
michael@0: {
michael@0: 
michael@0:     mDepthStencil = renderer->createRenderTarget(width, height, GL_DEPTH24_STENCIL8_OES, samples, true);
michael@0: 
michael@0:     mWidth = mDepthStencil->getWidth();
michael@0:     mHeight = mDepthStencil->getHeight();
michael@0:     mInternalFormat = GL_DEPTH24_STENCIL8_OES;
michael@0:     mActualFormat = mDepthStencil->getActualFormat();
michael@0:     mSamples = mDepthStencil->getSamples();
michael@0: }
michael@0: 
michael@0: DepthStencilbuffer::~DepthStencilbuffer()
michael@0: {
michael@0:     if (mDepthStencil)
michael@0:     {
michael@0:         delete mDepthStencil;
michael@0:     }
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *DepthStencilbuffer::getDepthStencil()
michael@0: {
michael@0:     if (mDepthStencil)
michael@0:     {
michael@0:         return mDepthStencil;
michael@0:     }
michael@0: 
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: Depthbuffer::Depthbuffer(rx::Renderer *renderer, int width, int height, GLsizei samples) : DepthStencilbuffer(renderer, width, height, samples)
michael@0: {
michael@0:     if (mDepthStencil)
michael@0:     {
michael@0:         mInternalFormat = GL_DEPTH_COMPONENT16;   // If the renderbuffer parameters are queried, the calling function
michael@0:                                                   // will expect one of the valid renderbuffer formats for use in 
michael@0:                                                   // glRenderbufferStorage
michael@0:     }
michael@0: }
michael@0: 
michael@0: Depthbuffer::~Depthbuffer()
michael@0: {
michael@0: }
michael@0: 
michael@0: Stencilbuffer::Stencilbuffer(rx::Renderer *renderer, int width, int height, GLsizei samples) : DepthStencilbuffer(renderer, width, height, samples)
michael@0: {
michael@0:     if (mDepthStencil)
michael@0:     {
michael@0:         mInternalFormat = GL_STENCIL_INDEX8;   // If the renderbuffer parameters are queried, the calling function
michael@0:                                                // will expect one of the valid renderbuffer formats for use in 
michael@0:                                                // glRenderbufferStorage
michael@0:     }
michael@0: }
michael@0: 
michael@0: Stencilbuffer::~Stencilbuffer()
michael@0: {
michael@0: }
michael@0: 
michael@0: }