3e0435febd
"This submission changes deleteGLObject calls to scheduleGLObjectForDeletion, to ensure that the actual deletion happens from the correct thread (the graphics thread). This fixes the leak I reported in http://forum.openscenegraph.org/viewtopic.php?t=15567 , and possibly also http://forum.openscenegraph.org/viewtopic.php?t=15564."
804 lines
24 KiB
C++
804 lines
24 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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// initial FBO support written by Marco Jez, June 2005.
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#include <osg/FrameBufferObject>
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#include <osg/State>
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#include <osg/GLExtensions>
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#include <osg/Texture1D>
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#include <osg/Texture2D>
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#include <osg/Texture2DMultisample>
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#include <osg/Texture3D>
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#include <osg/Texture2DArray>
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#include <osg/TextureCubeMap>
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#include <osg/TextureRectangle>
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#include <osg/Notify>
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#include <osg/ContextData>
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#include <osg/Timer>
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using namespace osg;
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GLRenderBufferManager::GLRenderBufferManager(unsigned int contextID):
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GLObjectManager("GLRenderBufferManager",contextID)
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{}
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void GLRenderBufferManager::deleteGLObject(GLuint globj)
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{
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const GLExtensions* extensions = GLExtensions::Get(_contextID,true);
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if (extensions->isGlslSupported) extensions->glDeleteRenderbuffers(1, &globj );
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}
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GLFrameBufferObjectManager::GLFrameBufferObjectManager(unsigned int contextID):
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GLObjectManager("GLFrameBufferObjectManager",contextID)
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{}
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void GLFrameBufferObjectManager::deleteGLObject(GLuint globj)
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{
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const GLExtensions* extensions = GLExtensions::Get(_contextID,true);
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if (extensions->isGlslSupported) extensions->glDeleteFramebuffers(1, &globj );
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}
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/**************************************************************************
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* RenderBuffer
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**************************************************************************/
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RenderBuffer::RenderBuffer()
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: Object(),
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_internalFormat(GL_DEPTH_COMPONENT24),
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_width(512),
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_height(512),
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_samples(0),
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_colorSamples(0)
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{
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}
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RenderBuffer::RenderBuffer(int width, int height, GLenum internalFormat, int samples, int colorSamples)
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: Object(),
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_internalFormat(internalFormat),
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_width(width),
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_height(height),
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_samples(samples),
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_colorSamples(colorSamples)
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{
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}
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RenderBuffer::RenderBuffer(const RenderBuffer ©, const CopyOp ©op)
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: Object(copy, copyop),
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_internalFormat(copy._internalFormat),
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_width(copy._width),
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_height(copy._height),
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_samples(copy._samples),
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_colorSamples(copy._colorSamples)
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{
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}
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RenderBuffer::~RenderBuffer()
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{
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for(unsigned i=0; i<_objectID.size(); ++i)
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{
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if (_objectID[i]) osg::get<GLRenderBufferManager>(i)->scheduleGLObjectForDeletion(_objectID[i]);
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}
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}
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int RenderBuffer::getMaxSamples(unsigned int contextID, const GLExtensions* ext)
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{
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static osg::buffered_value<GLint> maxSamplesList;
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GLint& maxSamples = maxSamplesList[contextID];
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if (!maxSamples && ext->isMultisampleSupported)
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{
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glGetIntegerv(GL_MAX_SAMPLES_EXT, &maxSamples);
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}
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return maxSamples;
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}
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GLuint RenderBuffer::getObjectID(unsigned int contextID, const GLExtensions* ext) const
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{
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GLuint &objectID = _objectID[contextID];
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int &dirty = _dirty[contextID];
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if (objectID == 0)
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{
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ext->glGenRenderbuffers(1, &objectID);
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if (objectID == 0)
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return 0;
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dirty = 1;
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}
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if (dirty)
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{
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// bind and configure
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ext->glBindRenderbuffer(GL_RENDERBUFFER_EXT, objectID);
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// framebuffer_multisample_coverage specification requires that coverage
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// samples must be >= color samples.
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if (_samples < _colorSamples)
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{
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OSG_WARN << "Coverage samples must be greater than or equal to color samples."
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" Setting coverage samples equal to color samples." << std::endl;
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const_cast<RenderBuffer*>(this)->setSamples(_colorSamples);
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}
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if (_samples > 0 && ext->isRenderbufferMultisampleCoverageSupported())
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{
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int samples = minimum(_samples, getMaxSamples(contextID, ext));
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int colorSamples = minimum(_colorSamples, samples);
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ext->glRenderbufferStorageMultisampleCoverageNV(GL_RENDERBUFFER_EXT,
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samples, colorSamples, _internalFormat, _width, _height);
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}
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else if (_samples > 0 && ext->isRenderbufferMultisampleSupported())
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{
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int samples = minimum(_samples, getMaxSamples(contextID, ext));
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ext->glRenderbufferStorageMultisample(GL_RENDERBUFFER_EXT,
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samples, _internalFormat, _width, _height);
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}
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else
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{
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ext->glRenderbufferStorage(GL_RENDERBUFFER_EXT, _internalFormat, _width, _height);
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}
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dirty = 0;
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}
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return objectID;
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}
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void RenderBuffer::resizeGLObjectBuffers(unsigned int maxSize)
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{
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_objectID.resize(maxSize);
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_dirty.resize(maxSize);
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}
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void RenderBuffer::releaseGLObjects(osg::State* state) const
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{
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if (state)
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{
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unsigned int contextID = state->getContextID();
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if (_objectID[contextID])
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{
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osg::get<GLRenderBufferManager>(contextID)->scheduleGLObjectForDeletion(_objectID[contextID]);
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_objectID[contextID] = 0;
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}
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}
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else
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{
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for(unsigned i=0; i<_objectID.size(); ++i)
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{
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if (_objectID[i])
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{
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osg::get<GLRenderBufferManager>(i)->scheduleGLObjectForDeletion(_objectID[i]);
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_objectID[i] = 0;
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}
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}
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}
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}
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/**************************************************************************
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* FrameBufferAttachment
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**************************************************************************/
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#ifndef GL_TEXTURE_CUBE_MAP_POSITIVE_X
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#define GL_TEXTURE_CUBE_MAP_POSITIVE_X 0x8515
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#endif
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struct FrameBufferAttachment::Pimpl
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{
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enum TargetType
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{
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RENDERBUFFER,
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TEXTURE1D,
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TEXTURE2D,
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TEXTURE3D,
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TEXTURECUBE,
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TEXTURERECT,
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TEXTURE2DARRAY,
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TEXTURE2DMULTISAMPLE
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};
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TargetType targetType;
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ref_ptr<RenderBuffer> renderbufferTarget;
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ref_ptr<Texture> textureTarget;
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unsigned int cubeMapFace;
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unsigned int level;
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unsigned int zoffset;
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explicit Pimpl(TargetType ttype = RENDERBUFFER, unsigned int lev = 0)
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: targetType(ttype),
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cubeMapFace(0),
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level(lev),
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zoffset(0)
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{
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}
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Pimpl(const Pimpl ©)
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: targetType(copy.targetType),
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renderbufferTarget(copy.renderbufferTarget),
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textureTarget(copy.textureTarget),
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cubeMapFace(copy.cubeMapFace),
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level(copy.level),
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zoffset(copy.zoffset)
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{
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}
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};
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FrameBufferAttachment::FrameBufferAttachment()
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{
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_ximpl = new Pimpl;
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}
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FrameBufferAttachment::FrameBufferAttachment(const FrameBufferAttachment ©)
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{
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_ximpl = new Pimpl(*copy._ximpl);
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}
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FrameBufferAttachment::FrameBufferAttachment(RenderBuffer* target)
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{
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_ximpl = new Pimpl(Pimpl::RENDERBUFFER);
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_ximpl->renderbufferTarget = target;
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}
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FrameBufferAttachment::FrameBufferAttachment(Texture1D* target, unsigned int level)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURE1D, level);
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_ximpl->textureTarget = target;
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}
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FrameBufferAttachment::FrameBufferAttachment(Texture2D* target, unsigned int level)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURE2D, level);
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_ximpl->textureTarget = target;
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}
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FrameBufferAttachment::FrameBufferAttachment(Texture2DMultisample* target, unsigned int level)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURE2DMULTISAMPLE, level);
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_ximpl->textureTarget = target;
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}
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FrameBufferAttachment::FrameBufferAttachment(Texture3D* target, unsigned int zoffset, unsigned int level)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURE3D, level);
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_ximpl->textureTarget = target;
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_ximpl->zoffset = zoffset;
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}
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FrameBufferAttachment::FrameBufferAttachment(Texture2DArray* target, unsigned int layer, unsigned int level)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURE2DARRAY, level);
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_ximpl->textureTarget = target;
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_ximpl->zoffset = layer;
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}
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FrameBufferAttachment::FrameBufferAttachment(TextureCubeMap* target, unsigned int face, unsigned int level)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURECUBE, level);
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_ximpl->textureTarget = target;
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_ximpl->cubeMapFace = face;
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}
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FrameBufferAttachment::FrameBufferAttachment(TextureRectangle* target)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURERECT);
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_ximpl->textureTarget = target;
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}
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FrameBufferAttachment::FrameBufferAttachment(Camera::Attachment& attachment)
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{
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osg::Texture* texture = attachment._texture.get();
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if (texture)
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{
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osg::Texture1D* texture1D = dynamic_cast<osg::Texture1D*>(texture);
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if (texture1D)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURE1D, attachment._level);
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_ximpl->textureTarget = texture1D;
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return;
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}
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osg::Texture2D* texture2D = dynamic_cast<osg::Texture2D*>(texture);
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if (texture2D)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURE2D, attachment._level);
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_ximpl->textureTarget = texture2D;
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return;
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}
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osg::Texture2DMultisample* texture2DMS = dynamic_cast<osg::Texture2DMultisample*>(texture);
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if (texture2DMS)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURE2DMULTISAMPLE, attachment._level);
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_ximpl->textureTarget = texture2DMS;
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return;
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}
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osg::Texture3D* texture3D = dynamic_cast<osg::Texture3D*>(texture);
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if (texture3D)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURE3D, attachment._level);
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_ximpl->textureTarget = texture3D;
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_ximpl->zoffset = attachment._face;
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return;
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}
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osg::Texture2DArray* texture2DArray = dynamic_cast<osg::Texture2DArray*>(texture);
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if (texture2DArray)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURE2DARRAY, attachment._level);
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_ximpl->textureTarget = texture2DArray;
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_ximpl->zoffset = attachment._face;
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return;
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}
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osg::TextureCubeMap* textureCubeMap = dynamic_cast<osg::TextureCubeMap*>(texture);
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if (textureCubeMap)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURECUBE, attachment._level);
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_ximpl->textureTarget = textureCubeMap;
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_ximpl->cubeMapFace = attachment._face;
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return;
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}
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osg::TextureRectangle* textureRectangle = dynamic_cast<osg::TextureRectangle*>(texture);
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if (textureRectangle)
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{
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_ximpl = new Pimpl(Pimpl::TEXTURERECT);
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_ximpl->textureTarget = textureRectangle;
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return;
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}
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}
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osg::Image* image = attachment._image.get();
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if (image)
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{
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if (image->s()>0 && image->t()>0)
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{
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GLenum format = attachment._image->getInternalTextureFormat();
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if (format == 0)
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format = attachment._internalFormat;
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_ximpl = new Pimpl(Pimpl::RENDERBUFFER);
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_ximpl->renderbufferTarget = new osg::RenderBuffer(image->s(), image->t(), format);
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return;
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}
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else
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{
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OSG_WARN<<"Error: FrameBufferAttachment::FrameBufferAttachment(Camera::Attachment&) passed an empty osg::Image, image must be allocated first."<<std::endl;
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}
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}
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else
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{
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OSG_WARN<<"Error: FrameBufferAttachment::FrameBufferAttachment(Camera::Attachment&) passed an unrecognised Texture type."<<std::endl;
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}
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// provide all fallback
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_ximpl = new Pimpl();
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}
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FrameBufferAttachment::~FrameBufferAttachment()
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{
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delete _ximpl;
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}
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FrameBufferAttachment &FrameBufferAttachment::operator = (const FrameBufferAttachment ©)
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{
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delete _ximpl;
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_ximpl = new Pimpl(*copy._ximpl);
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return *this;
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}
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bool FrameBufferAttachment::isMultisample() const
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{
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if (_ximpl->renderbufferTarget.valid())
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{
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return _ximpl->renderbufferTarget->getSamples() > 0;
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}
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return false;
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}
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void FrameBufferAttachment::createRequiredTexturesAndApplyGenerateMipMap(State &state, const GLExtensions* ext) const
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{
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unsigned int contextID = state.getContextID();
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// force compile texture if necessary
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Texture::TextureObject *tobj = 0;
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if (_ximpl->textureTarget.valid())
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{
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tobj = _ximpl->textureTarget->getTextureObject(contextID);
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if (!tobj || tobj->id() == 0)
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{
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_ximpl->textureTarget->compileGLObjects(state);
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tobj = _ximpl->textureTarget->getTextureObject(contextID);
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}
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if (!tobj || tobj->id() == 0)
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return;
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Texture::FilterMode minFilter = _ximpl->textureTarget->getFilter(Texture::MIN_FILTER);
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if (minFilter==Texture::LINEAR_MIPMAP_LINEAR ||
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minFilter==Texture::LINEAR_MIPMAP_NEAREST ||
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minFilter==Texture::NEAREST_MIPMAP_LINEAR ||
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minFilter==Texture::NEAREST_MIPMAP_NEAREST)
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{
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state.setActiveTextureUnit(0);
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state.applyTextureAttribute(0, _ximpl->textureTarget.get());
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ext->glGenerateMipmap(_ximpl->textureTarget->getTextureTarget());
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}
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}
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}
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void FrameBufferAttachment::attach(State &state, GLenum target, GLenum attachment_point, const GLExtensions* ext) const
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{
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unsigned int contextID = state.getContextID();
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Texture::TextureObject *tobj = 0;
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if (_ximpl->textureTarget.valid())
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{
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tobj = _ximpl->textureTarget->getTextureObject(contextID);
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if (!tobj || tobj->id() == 0)
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{
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_ximpl->textureTarget->compileGLObjects(state);
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tobj = _ximpl->textureTarget->getTextureObject(contextID);
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}
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if (!tobj || tobj->id() == 0)
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return;
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}
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switch (_ximpl->targetType)
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{
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default:
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case Pimpl::RENDERBUFFER:
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ext->glFramebufferRenderbuffer(target, attachment_point, GL_RENDERBUFFER_EXT, _ximpl->renderbufferTarget->getObjectID(contextID, ext));
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break;
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case Pimpl::TEXTURE1D:
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ext->glFramebufferTexture1D(target, attachment_point, GL_TEXTURE_1D, tobj->id(), _ximpl->level);
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break;
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case Pimpl::TEXTURE2D:
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ext->glFramebufferTexture2D(target, attachment_point, GL_TEXTURE_2D, tobj->id(), _ximpl->level);
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break;
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case Pimpl::TEXTURE2DMULTISAMPLE:
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ext->glFramebufferTexture2D(target, attachment_point, GL_TEXTURE_2D_MULTISAMPLE, tobj->id(), _ximpl->level);
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break;
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case Pimpl::TEXTURE3D:
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if (_ximpl->zoffset == Camera::FACE_CONTROLLED_BY_GEOMETRY_SHADER)
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{
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if (ext->glFramebufferTexture)
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{
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ext->glFramebufferTexture(target, attachment_point, tobj->id(), _ximpl->level);
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}
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}
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else
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ext->glFramebufferTexture3D(target, attachment_point, GL_TEXTURE_3D, tobj->id(), _ximpl->level, _ximpl->zoffset);
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break;
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case Pimpl::TEXTURE2DARRAY:
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if (_ximpl->zoffset == Camera::FACE_CONTROLLED_BY_GEOMETRY_SHADER)
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{
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if (ext->glFramebufferTexture)
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{
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ext->glFramebufferTexture(target, attachment_point, tobj->id(), _ximpl->level);
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}
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}
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else
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ext->glFramebufferTextureLayer(target, attachment_point, tobj->id(), _ximpl->level, _ximpl->zoffset);
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break;
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case Pimpl::TEXTURERECT:
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ext->glFramebufferTexture2D(target, attachment_point, GL_TEXTURE_RECTANGLE, tobj->id(), 0);
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break;
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case Pimpl::TEXTURECUBE:
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if (_ximpl->cubeMapFace == Camera::FACE_CONTROLLED_BY_GEOMETRY_SHADER)
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{
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if (ext->glFramebufferTexture)
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{
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ext->glFramebufferTexture(target, attachment_point, tobj->id(), _ximpl->level);
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}
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}
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else
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ext->glFramebufferTexture2D(target, attachment_point, GL_TEXTURE_CUBE_MAP_POSITIVE_X + _ximpl->cubeMapFace, tobj->id(), _ximpl->level);
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break;
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}
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}
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int FrameBufferAttachment::compare(const FrameBufferAttachment &fa) const
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{
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if (&fa == this) return 0;
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if (_ximpl->targetType < fa._ximpl->targetType) return -1;
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if (_ximpl->targetType > fa._ximpl->targetType) return 1;
|
|
if (_ximpl->renderbufferTarget.get() < fa._ximpl->renderbufferTarget.get()) return -1;
|
|
if (_ximpl->renderbufferTarget.get() > fa._ximpl->renderbufferTarget.get()) return 1;
|
|
if (_ximpl->textureTarget.get() < fa._ximpl->textureTarget.get()) return -1;
|
|
if (_ximpl->textureTarget.get() > fa._ximpl->textureTarget.get()) return 1;
|
|
if (_ximpl->cubeMapFace < fa._ximpl->cubeMapFace) return -1;
|
|
if (_ximpl->cubeMapFace > fa._ximpl->cubeMapFace) return 1;
|
|
if (_ximpl->level < fa._ximpl->level) return -1;
|
|
if (_ximpl->level > fa._ximpl->level) return 1;
|
|
if (_ximpl->zoffset < fa._ximpl->zoffset) return -1;
|
|
if (_ximpl->zoffset > fa._ximpl->zoffset) return 1;
|
|
return 0;
|
|
}
|
|
|
|
RenderBuffer* FrameBufferAttachment::getRenderBuffer()
|
|
{
|
|
return _ximpl->renderbufferTarget.get();
|
|
}
|
|
|
|
Texture* FrameBufferAttachment::getTexture()
|
|
{
|
|
return _ximpl->textureTarget.get();
|
|
}
|
|
|
|
const RenderBuffer* FrameBufferAttachment::getRenderBuffer() const
|
|
{
|
|
return _ximpl->renderbufferTarget.get();
|
|
}
|
|
|
|
const Texture* FrameBufferAttachment::getTexture() const
|
|
{
|
|
return _ximpl->textureTarget.get();
|
|
}
|
|
|
|
unsigned int FrameBufferAttachment::getCubeMapFace() const
|
|
{
|
|
return _ximpl->cubeMapFace;
|
|
}
|
|
|
|
unsigned int FrameBufferAttachment::getTextureLevel() const
|
|
{
|
|
return _ximpl->level;
|
|
}
|
|
|
|
unsigned int FrameBufferAttachment::getTexture3DZOffset() const
|
|
{
|
|
return _ximpl->zoffset;
|
|
}
|
|
|
|
unsigned int FrameBufferAttachment::getTextureArrayLayer() const
|
|
{
|
|
return _ximpl->zoffset;
|
|
}
|
|
|
|
/**************************************************************************
|
|
* FrameBufferObject
|
|
**************************************************************************/
|
|
|
|
FrameBufferObject::FrameBufferObject()
|
|
: StateAttribute()
|
|
{
|
|
}
|
|
|
|
FrameBufferObject::FrameBufferObject(const FrameBufferObject ©, const CopyOp ©op)
|
|
: StateAttribute(copy, copyop),
|
|
_attachments(copy._attachments),
|
|
_drawBuffers(copy._drawBuffers)
|
|
{
|
|
}
|
|
|
|
FrameBufferObject::~FrameBufferObject()
|
|
{
|
|
for(unsigned i=0; i<_fboID.size(); ++i)
|
|
{
|
|
if (_fboID[i]) osg::get<GLFrameBufferObjectManager>(i)->scheduleGLObjectForDeletion(_fboID[i]);
|
|
}
|
|
}
|
|
|
|
void FrameBufferObject::resizeGLObjectBuffers(unsigned int maxSize)
|
|
{
|
|
_fboID.resize(maxSize);
|
|
_unsupported.resize(maxSize);
|
|
_fboID.resize(maxSize);
|
|
}
|
|
|
|
void FrameBufferObject::releaseGLObjects(osg::State* state) const
|
|
{
|
|
if (state)
|
|
{
|
|
unsigned int contextID = state->getContextID();
|
|
if (_fboID[contextID])
|
|
{
|
|
osg::get<GLFrameBufferObjectManager>(contextID)->scheduleGLObjectForDeletion(_fboID[contextID]);
|
|
_fboID[contextID] = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for(unsigned int i=0; i<_fboID.size(); ++i)
|
|
{
|
|
if (_fboID[i])
|
|
{
|
|
osg::get<GLFrameBufferObjectManager>(i)->scheduleGLObjectForDeletion(_fboID[i]);
|
|
_fboID[i] = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void FrameBufferObject::setAttachment(BufferComponent attachment_point, const FrameBufferAttachment &attachment)
|
|
{
|
|
_attachments[attachment_point] = attachment;
|
|
|
|
updateDrawBuffers();
|
|
dirtyAll();
|
|
}
|
|
|
|
|
|
GLenum FrameBufferObject::convertBufferComponentToGLenum(BufferComponent attachment_point) const
|
|
{
|
|
switch(attachment_point)
|
|
{
|
|
case(Camera::DEPTH_BUFFER): return GL_DEPTH_ATTACHMENT_EXT;
|
|
case(Camera::STENCIL_BUFFER): return GL_STENCIL_ATTACHMENT_EXT;
|
|
case(Camera::COLOR_BUFFER): return GL_COLOR_ATTACHMENT0_EXT;
|
|
default: return GLenum(GL_COLOR_ATTACHMENT0_EXT + (attachment_point-Camera::COLOR_BUFFER0));
|
|
}
|
|
}
|
|
|
|
void FrameBufferObject::updateDrawBuffers()
|
|
{
|
|
_drawBuffers.clear();
|
|
|
|
// create textures and mipmaps before we bind the frame buffer object
|
|
for (AttachmentMap::const_iterator i=_attachments.begin(); i!=_attachments.end(); ++i)
|
|
{
|
|
// setup draw buffers based on the attachment definition
|
|
if (i->first >= Camera::COLOR_BUFFER0 && i->first <= Camera::COLOR_BUFFER15)
|
|
_drawBuffers.push_back(convertBufferComponentToGLenum(i->first));
|
|
}
|
|
}
|
|
|
|
void FrameBufferObject::apply(State &state) const
|
|
{
|
|
apply(state, READ_DRAW_FRAMEBUFFER);
|
|
}
|
|
|
|
void FrameBufferObject::apply(State &state, BindTarget target) const
|
|
{
|
|
unsigned int contextID = state.getContextID();
|
|
|
|
if (_unsupported[contextID])
|
|
return;
|
|
|
|
|
|
GLExtensions* ext = state.get<GLExtensions>();
|
|
if (!ext->isFrameBufferObjectSupported)
|
|
{
|
|
_unsupported[contextID] = 1;
|
|
OSG_WARN << "Warning: EXT_framebuffer_object is not supported" << std::endl;
|
|
return;
|
|
}
|
|
|
|
if (_attachments.empty())
|
|
{
|
|
ext->glBindFramebuffer(target, 0);
|
|
return;
|
|
}
|
|
|
|
int &dirtyAttachmentList = _dirtyAttachmentList[contextID];
|
|
|
|
GLuint &fboID = _fboID[contextID];
|
|
if (fboID == 0)
|
|
{
|
|
ext->glGenFramebuffers(1, &fboID);
|
|
if (fboID == 0)
|
|
{
|
|
OSG_WARN << "Warning: FrameBufferObject: could not create the FBO" << std::endl;
|
|
return;
|
|
}
|
|
|
|
dirtyAttachmentList = 1;
|
|
|
|
}
|
|
|
|
if (dirtyAttachmentList)
|
|
{
|
|
// the set of of attachments appears to be thread sensitive, it shouldn't be because
|
|
// OpenGL FBO handles osg::FrameBufferObject has are multi-buffered...
|
|
// so as a temporary fix will stick in a mutex to ensure that only one thread passes through here
|
|
// at one time.
|
|
static OpenThreads::Mutex s_mutex;
|
|
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_mutex);
|
|
|
|
// create textures and mipmaps before we bind the frame buffer object
|
|
for (AttachmentMap::const_iterator i=_attachments.begin(); i!=_attachments.end(); ++i)
|
|
{
|
|
const FrameBufferAttachment &fa = i->second;
|
|
fa.createRequiredTexturesAndApplyGenerateMipMap(state, ext);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
ext->glBindFramebuffer(target, fboID);
|
|
|
|
// enable drawing buffers to render the result to fbo
|
|
if ( (target == READ_DRAW_FRAMEBUFFER) || (target == DRAW_FRAMEBUFFER) )
|
|
{
|
|
if (_drawBuffers.size() > 0)
|
|
{
|
|
GLExtensions *gl2e = state.get<GLExtensions>();
|
|
if (gl2e && gl2e->glDrawBuffers)
|
|
{
|
|
gl2e->glDrawBuffers(_drawBuffers.size(), &(_drawBuffers[0]));
|
|
}
|
|
else
|
|
{
|
|
OSG_WARN <<"Warning: FrameBufferObject: could not set draw buffers, glDrawBuffers is not supported!" << std::endl;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (dirtyAttachmentList)
|
|
{
|
|
for (AttachmentMap::const_iterator i=_attachments.begin(); i!=_attachments.end(); ++i)
|
|
{
|
|
const FrameBufferAttachment &fa = i->second;
|
|
switch(i->first)
|
|
{
|
|
case(Camera::PACKED_DEPTH_STENCIL_BUFFER):
|
|
if (ext->isPackedDepthStencilSupported)
|
|
{
|
|
fa.attach(state, target, GL_DEPTH_ATTACHMENT_EXT, ext);
|
|
fa.attach(state, target, GL_STENCIL_ATTACHMENT_EXT, ext);
|
|
}
|
|
else
|
|
{
|
|
OSG_WARN <<
|
|
"Warning: FrameBufferObject: could not attach PACKED_DEPTH_STENCIL_BUFFER, "
|
|
"EXT_packed_depth_stencil is not supported!" << std::endl;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
fa.attach(state, target, convertBufferComponentToGLenum(i->first), ext);
|
|
break;
|
|
}
|
|
}
|
|
dirtyAttachmentList = 0;
|
|
}
|
|
|
|
}
|
|
|
|
bool FrameBufferObject::isMultisample() const
|
|
{
|
|
if (_attachments.size())
|
|
{
|
|
// If the FBO is correctly set up then all attachments will be either
|
|
// multisampled or single sampled. Therefore we can just return the
|
|
// result of the first attachment.
|
|
return _attachments.begin()->second.isMultisample();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
int FrameBufferObject::compare(const StateAttribute &sa) const
|
|
{
|
|
COMPARE_StateAttribute_Types(FrameBufferObject, sa);
|
|
COMPARE_StateAttribute_Parameter(_attachments.size());
|
|
AttachmentMap::const_iterator i = _attachments.begin();
|
|
AttachmentMap::const_iterator j = rhs._attachments.begin();
|
|
for (; i!=_attachments.end(); ++i, ++j)
|
|
{
|
|
int cmp = i->second.compare(j->second);
|
|
if (cmp != 0) return cmp;
|
|
}
|
|
return 0;
|
|
}
|