2d28026654
In osg::isGLExtensionOrVersionSupported in src/osg/GLExtensions.cpp when using indirect X11 rendering, glGetIntegerv( GL_NUM_EXTENSIONS, &numExt ); is leaving numExt uninitilized causing the following glGetStringi to return NULL when the extension number isn't present. Passing NULL to std::string() then crashes. This is with the following nVidia driver. OpenGL version string: 3.3.0 NVIDIA 256.35 I went ahead and initialized some of the other variables before glGetInitegerv in other files as well. I don't know for sure which ones can fail, so I don't know which are strictly required. "
619 lines
21 KiB
C++
619 lines
21 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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#include <osg/GLExtensions>
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#include <osg/Texture3D>
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#include <osg/State>
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#include <osg/GLU>
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#include <osg/Notify>
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#include <string.h>
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using namespace osg;
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Texture3D::Texture3D():
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_textureWidth(0),
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_textureHeight(0),
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_textureDepth(0),
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_numMipmapLevels(0)
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{
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}
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Texture3D::Texture3D(Image* image):
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_textureWidth(0),
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_textureHeight(0),
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_textureDepth(0),
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_numMipmapLevels(0)
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{
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setImage(image);
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}
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Texture3D::Texture3D(const Texture3D& text,const CopyOp& copyop):
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Texture(text,copyop),
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_image(copyop(text._image.get())),
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_textureWidth(text._textureWidth),
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_textureHeight(text._textureHeight),
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_textureDepth(text._textureDepth),
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_numMipmapLevels(text._numMipmapLevels),
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_subloadCallback(text._subloadCallback)
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{
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}
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Texture3D::~Texture3D()
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{
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}
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int Texture3D::compare(const StateAttribute& sa) const
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{
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// check the types are equal and then create the rhs variable
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// used by the COMPARE_StateAttribute_Parameter macros below.
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COMPARE_StateAttribute_Types(Texture3D,sa)
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if (_image!=rhs._image) // smart pointer comparison.
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{
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if (_image.valid())
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{
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if (rhs._image.valid())
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{
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int result = _image->compare(*rhs._image);
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if (result!=0) return result;
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}
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else
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{
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return 1; // valid lhs._image is greater than null.
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}
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}
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else if (rhs._image.valid())
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{
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return -1; // valid rhs._image is greater than null.
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}
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}
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if (!_image && !rhs._image)
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{
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// no image attached to either Texture2D
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// but could these textures already be downloaded?
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// check the _textureObjectBuffer to see if they have been
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// downloaded
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int result = compareTextureObjects(rhs);
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if (result!=0) return result;
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}
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int result = compareTexture(rhs);
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if (result!=0) return result;
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// compare each parameter in turn against the rhs.
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COMPARE_StateAttribute_Parameter(_textureWidth)
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COMPARE_StateAttribute_Parameter(_textureHeight)
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COMPARE_StateAttribute_Parameter(_textureDepth)
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COMPARE_StateAttribute_Parameter(_subloadCallback)
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return 0; // passed all the above comparison macros, must be equal.
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}
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void Texture3D::setImage(Image* image)
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{
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if (_image == image) return;
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if (_image.valid() && _image->requiresUpdateCall())
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{
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setUpdateCallback(0);
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setDataVariance(osg::Object::STATIC);
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}
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// delete old texture objects.
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dirtyTextureObject();
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_modifiedCount.setAllElementsTo(0);
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_image = image;
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if (_image.valid() && _image->requiresUpdateCall())
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{
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setUpdateCallback(new Image::UpdateCallback());
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setDataVariance(osg::Object::DYNAMIC);
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}
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}
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void Texture3D::computeRequiredTextureDimensions(State& state, const osg::Image& image,GLsizei& inwidth, GLsizei& inheight,GLsizei& indepth, GLsizei& numMipmapLevels) const
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{
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const unsigned int contextID = state.getContextID();
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const Extensions* extensions = getExtensions(contextID,true);
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const Texture::Extensions* texExtensions = Texture::getExtensions(contextID,true);
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int width,height,depth;
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if( !_resizeNonPowerOfTwoHint && texExtensions->isNonPowerOfTwoTextureSupported(_min_filter) )
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{
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width = image.s();
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height = image.t();
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depth = image.r();
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}
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else
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{
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width = Image::computeNearestPowerOfTwo(image.s()-2*_borderWidth)+2*_borderWidth;
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height = Image::computeNearestPowerOfTwo(image.t()-2*_borderWidth)+2*_borderWidth;
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depth = Image::computeNearestPowerOfTwo(image.r()-2*_borderWidth)+2*_borderWidth;
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}
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// cap the size to what the graphics hardware can handle.
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if (width>extensions->maxTexture3DSize()) width = extensions->maxTexture3DSize();
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if (height>extensions->maxTexture3DSize()) height = extensions->maxTexture3DSize();
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if (depth>extensions->maxTexture3DSize()) depth = extensions->maxTexture3DSize();
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inwidth = width;
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inheight = height;
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indepth = depth;
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bool useHardwareMipMapGeneration = !image.isMipmap() && _useHardwareMipMapGeneration && texExtensions->isGenerateMipMapSupported();
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if( _min_filter == LINEAR || _min_filter == NEAREST || useHardwareMipMapGeneration )
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{
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numMipmapLevels = 1;
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}
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else if( image.isMipmap() )
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{
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numMipmapLevels = image.getNumMipmapLevels();
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}
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else
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{
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numMipmapLevels = 0;
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for( ; (width || height || depth) ;++numMipmapLevels)
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{
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if (width == 0)
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width = 1;
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if (height == 0)
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height = 1;
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if (depth == 0)
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depth = 1;
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width >>= 1;
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height >>= 1;
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depth >>= 1;
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}
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}
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}
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void Texture3D::apply(State& state) const
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{
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// get the contextID (user defined ID of 0 upwards) for the
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// current OpenGL context.
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const unsigned int contextID = state.getContextID();
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Texture::TextureObjectManager* tom = Texture::getTextureObjectManager(contextID).get();
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ElapsedTime elapsedTime(&(tom->getApplyTime()));
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tom->getNumberApplied()++;
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const Extensions* extensions = getExtensions(contextID,true);
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if (!extensions->isTexture3DSupported())
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{
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OSG_WARN<<"Warning: Texture3D::apply(..) failed, 3D texturing is not support by OpenGL driver."<<std::endl;
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return;
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}
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// get the texture object for the current contextID.
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TextureObject* textureObject = getTextureObject(contextID);
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if (textureObject)
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{
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if (_image.valid() && getModifiedCount(contextID) != _image->getModifiedCount())
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{
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// compute the internal texture format, this set the _internalFormat to an appropriate value.
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computeInternalFormat();
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GLsizei new_width, new_height, new_depth, new_numMipmapLevels;
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// compute the dimensions of the texture.
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computeRequiredTextureDimensions(state, *_image, new_width, new_height, new_depth, new_numMipmapLevels);
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if (!textureObject->match(GL_TEXTURE_3D, new_numMipmapLevels, _internalFormat, new_width, new_height, new_depth, _borderWidth))
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{
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Texture::releaseTextureObject(contextID, _textureObjectBuffer[contextID].get());
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_textureObjectBuffer[contextID] = 0;
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textureObject = 0;
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}
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}
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}
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if (textureObject)
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{
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// we have a valid image
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textureObject->bind();
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if (getTextureParameterDirty(state.getContextID())) applyTexParameters(GL_TEXTURE_3D,state);
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if (_subloadCallback.valid())
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{
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_subloadCallback->subload(*this,state);
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}
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else if (_image.get() && getModifiedCount(contextID) != _image->getModifiedCount())
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{
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computeRequiredTextureDimensions(state,*_image,_textureWidth, _textureHeight, _textureDepth,_numMipmapLevels);
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applyTexImage3D(GL_TEXTURE_3D,_image.get(),state, _textureWidth, _textureHeight, _textureDepth,_numMipmapLevels);
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// update the modified count to show that it is upto date.
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getModifiedCount(contextID) = _image->getModifiedCount();
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}
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}
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else if (_subloadCallback.valid())
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{
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_textureObjectBuffer[contextID] = textureObject = generateTextureObject(this, contextID,GL_TEXTURE_3D);
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textureObject->bind();
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applyTexParameters(GL_TEXTURE_3D,state);
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_subloadCallback->load(*this,state);
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textureObject->setAllocated(_numMipmapLevels,_internalFormat,_textureWidth,_textureHeight,_textureDepth,0);
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// in theory the following line is redundent, but in practice
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// have found that the first frame drawn doesn't apply the textures
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// unless a second bind is called?!!
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// perhaps it is the first glBind which is not required...
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//glBindTexture( GL_TEXTURE_3D, handle );
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}
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else if (_image.valid() && _image->data())
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{
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// compute the internal texture format, this set the _internalFormat to an appropriate value.
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computeInternalFormat();
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// compute the dimensions of the texture.
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computeRequiredTextureDimensions(state,*_image,_textureWidth, _textureHeight, _textureDepth,_numMipmapLevels);
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textureObject = generateTextureObject(this, contextID,GL_TEXTURE_3D);
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textureObject->bind();
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applyTexParameters(GL_TEXTURE_3D,state);
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applyTexImage3D(GL_TEXTURE_3D,_image.get(),state, _textureWidth, _textureHeight, _textureDepth,_numMipmapLevels);
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textureObject->setAllocated(_numMipmapLevels,_internalFormat,_textureWidth,_textureHeight,_textureDepth,0);
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// update the modified count to show that it is upto date.
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getModifiedCount(contextID) = _image->getModifiedCount();
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_textureObjectBuffer[contextID] = textureObject;
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// unref image data?
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if (isSafeToUnrefImageData(state) && _image->getDataVariance()==STATIC)
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{
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Texture3D* non_const_this = const_cast<Texture3D*>(this);
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non_const_this->_image = NULL;
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}
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}
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else if ( (_textureWidth!=0) && (_textureHeight!=0) && (_textureDepth!=0) && (_internalFormat!=0) )
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{
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_textureObjectBuffer[contextID] = textureObject = generateTextureObject(
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this, contextID,GL_TEXTURE_3D,_numMipmapLevels,_internalFormat,_textureWidth,_textureHeight,_textureDepth,0);
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textureObject->bind();
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applyTexParameters(GL_TEXTURE_3D,state);
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// no image present, but dimensions at set so lets create the texture
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extensions->glTexImage3D( GL_TEXTURE_3D, 0, _internalFormat,
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_textureWidth, _textureHeight, _textureDepth,
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_borderWidth,
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_sourceFormat ? _sourceFormat : _internalFormat,
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_sourceType ? _sourceType : GL_UNSIGNED_BYTE,
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0);
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if (_readPBuffer.valid())
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{
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_readPBuffer->bindPBufferToTexture(GL_FRONT);
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}
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}
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else
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{
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glBindTexture( GL_TEXTURE_3D, 0 );
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}
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// if texture object is now valid and we have to allocate mipmap levels, then
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if (textureObject != 0 && _texMipmapGenerationDirtyList[contextID])
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{
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generateMipmap(state);
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}
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}
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void Texture3D::computeInternalFormat() const
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{
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if (_image.valid()) computeInternalFormatWithImage(*_image);
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else computeInternalFormatType();
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}
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void Texture3D::applyTexImage3D(GLenum target, Image* image, State& state, GLsizei& inwidth, GLsizei& inheight, GLsizei& indepth, GLsizei& numMipmapLevels) const
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{
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// if we don't have a valid image we can't create a texture!
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if (!image || !image->data())
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return;
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// get the contextID (user defined ID of 0 upwards) for the
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// current OpenGL context.
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const unsigned int contextID = state.getContextID();
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const Extensions* extensions = getExtensions(contextID,true);
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const Texture::Extensions* texExtensions = Texture::getExtensions(contextID,true);
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// compute the internal texture format, this set the _internalFormat to an appropriate value.
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computeInternalFormat();
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// select the internalFormat required for the texture.
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bool compressed = isCompressedInternalFormat(_internalFormat);
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bool compressed_image = isCompressedInternalFormat((GLenum)image->getPixelFormat());
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if (compressed)
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{
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//OSG_WARN<<"Warning::cannot currently use compressed format with 3D textures."<<std::endl;
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//return;
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}
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//Rescale if resize hint is set or NPOT not supported or dimensions exceed max size
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if( _resizeNonPowerOfTwoHint || !texExtensions->isNonPowerOfTwoTextureSupported(_min_filter)
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|| inwidth > extensions->maxTexture3DSize()
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|| inheight > extensions->maxTexture3DSize()
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|| indepth > extensions->maxTexture3DSize() )
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image->ensureValidSizeForTexturing(extensions->maxTexture3DSize());
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glPixelStorei(GL_UNPACK_ALIGNMENT,image->getPacking());
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bool useHardwareMipMapGeneration = !image->isMipmap() && _useHardwareMipMapGeneration && texExtensions->isGenerateMipMapSupported();
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if( _min_filter == LINEAR || _min_filter == NEAREST || useHardwareMipMapGeneration )
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{
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bool hardwareMipMapOn = false;
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if (_min_filter != LINEAR && _min_filter != NEAREST)
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{
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if (useHardwareMipMapGeneration) glTexParameteri(GL_TEXTURE_3D, GL_GENERATE_MIPMAP_SGIS,GL_TRUE);
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hardwareMipMapOn = true;
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}
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numMipmapLevels = 1;
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if (!compressed_image)
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{
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extensions->glTexImage3D( target, 0, _internalFormat,
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inwidth, inheight, indepth,
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_borderWidth,
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(GLenum)image->getPixelFormat(),
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(GLenum)image->getDataType(),
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image->data() );
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}
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else if (extensions->isCompressedTexImage3DSupported())
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{
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// OSG_WARN<<"glCompressedTexImage3D "<<inwidth<<", "<<inheight<<", "<<indepth<<std::endl;
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numMipmapLevels = 1;
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GLint blockSize, size;
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getCompressedSize(_internalFormat, inwidth, inheight, indepth, blockSize,size);
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extensions->glCompressedTexImage3D(target, 0, _internalFormat,
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inwidth, inheight, indepth,
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_borderWidth,
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size,
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image->data());
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}
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if (hardwareMipMapOn) glTexParameteri(GL_TEXTURE_3D, GL_GENERATE_MIPMAP_SGIS,GL_FALSE);
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}
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else
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{
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if(!image->isMipmap())
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{
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numMipmapLevels = 1;
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gluBuild3DMipmaps( extensions->glTexImage3D,
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target, _internalFormat,
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image->s(),image->t(),image->r(),
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(GLenum)image->getPixelFormat(), (GLenum)image->getDataType(),
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image->data() );
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}
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else
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{
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numMipmapLevels = image->getNumMipmapLevels();
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int width = image->s();
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int height = image->t();
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int depth = image->r();
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for( GLsizei k = 0 ; k < numMipmapLevels && (width || height || depth) ;k++)
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{
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if (width == 0)
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width = 1;
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if (height == 0)
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height = 1;
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if (depth == 0)
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depth = 1;
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extensions->glTexImage3D( target, k, _internalFormat,
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width, height, depth, _borderWidth,
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(GLenum)image->getPixelFormat(),
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(GLenum)image->getDataType(),
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image->getMipmapData(k));
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width >>= 1;
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height >>= 1;
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depth >>= 1;
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}
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}
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}
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inwidth = image->s();
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inheight = image->t();
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indepth = image->r();
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}
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void Texture3D::copyTexSubImage3D(State& state, int xoffset, int yoffset, int zoffset, int x, int y, int width, int height )
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{
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const unsigned int contextID = state.getContextID();
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const Extensions* extensions = getExtensions(contextID,true);
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// get the texture object for the current contextID.
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TextureObject* textureObject = getTextureObject(contextID);
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if (textureObject != 0)
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{
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textureObject->bind();
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applyTexParameters(GL_TEXTURE_3D,state);
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extensions->glCopyTexSubImage3D( GL_TEXTURE_3D, 0, xoffset,yoffset,zoffset, x, y, width, height);
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/* Redundant, delete later */
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//glBindTexture( GL_TEXTURE_3D, handle );
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// inform state that this texture is the current one bound.
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state.haveAppliedTextureAttribute(state.getActiveTextureUnit(), this);
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}
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else
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{
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OSG_WARN<<"Warning: Texture3D::copyTexSubImage3D(..) failed, cannot not copy to a non existant texture."<<std::endl;
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}
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}
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void Texture3D::allocateMipmap(State& state) const
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{
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const unsigned int contextID = state.getContextID();
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// get the texture object for the current contextID.
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TextureObject* textureObject = getTextureObject(contextID);
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if (textureObject && _textureWidth != 0 && _textureHeight != 0 && _textureDepth != 0)
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{
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const Extensions* extensions = getExtensions(contextID,true);
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// bind texture
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textureObject->bind();
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// compute number of mipmap levels
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int width = _textureWidth;
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int height = _textureHeight;
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int depth = _textureDepth;
|
|
int numMipmapLevels = Image::computeNumberOfMipmapLevels(width, height, depth);
|
|
|
|
// we do not reallocate the level 0, since it was already allocated
|
|
width >>= 1;
|
|
height >>= 1;
|
|
depth >>= 1;
|
|
|
|
for( GLsizei k = 1; k < numMipmapLevels && (width || height || depth); k++)
|
|
{
|
|
if (width == 0)
|
|
width = 1;
|
|
if (height == 0)
|
|
height = 1;
|
|
if (depth == 0)
|
|
depth = 1;
|
|
|
|
extensions->glTexImage3D( GL_TEXTURE_3D, k, _internalFormat,
|
|
width, height, depth, _borderWidth,
|
|
_sourceFormat ? _sourceFormat : _internalFormat,
|
|
_sourceType ? _sourceType : GL_UNSIGNED_BYTE, NULL);
|
|
|
|
width >>= 1;
|
|
height >>= 1;
|
|
depth >>= 1;
|
|
}
|
|
|
|
// inform state that this texture is the current one bound.
|
|
state.haveAppliedTextureAttribute(state.getActiveTextureUnit(), this);
|
|
}
|
|
}
|
|
|
|
typedef buffered_value< ref_ptr<Texture3D::Extensions> > BufferedExtensions;
|
|
static BufferedExtensions s_extensions;
|
|
|
|
Texture3D::Extensions* Texture3D::getExtensions(unsigned int contextID,bool createIfNotInitalized)
|
|
{
|
|
if (!s_extensions[contextID] && createIfNotInitalized) s_extensions[contextID] = new Extensions(contextID);
|
|
return s_extensions[contextID].get();
|
|
}
|
|
|
|
void Texture3D::setExtensions(unsigned int contextID,Extensions* extensions)
|
|
{
|
|
s_extensions[contextID] = extensions;
|
|
}
|
|
|
|
#ifndef GL_MAX_3D_TEXTURE_SIZE
|
|
#define GL_MAX_3D_TEXTURE_SIZE 0x8073
|
|
#endif
|
|
|
|
Texture3D::Extensions::Extensions(unsigned int contextID)
|
|
{
|
|
setupGLExtensions(contextID);
|
|
}
|
|
|
|
Texture3D::Extensions::Extensions(const Extensions& rhs):
|
|
Referenced()
|
|
{
|
|
_isTexture3DSupported = rhs._isTexture3DSupported;
|
|
_isTexture3DFast = rhs._isTexture3DFast;
|
|
_maxTexture3DSize = rhs._maxTexture3DSize;
|
|
|
|
glTexImage3D = rhs.glTexImage3D;
|
|
glTexSubImage3D = rhs.glTexSubImage3D;
|
|
glCompressedTexImage3D = rhs.glCompressedTexImage3D;
|
|
glCompressedTexSubImage3D = rhs.glCompressedTexSubImage3D;
|
|
glCopyTexSubImage3D = rhs.glCopyTexSubImage3D;
|
|
}
|
|
|
|
void Texture3D::Extensions::lowestCommonDenominator(const Extensions& rhs)
|
|
{
|
|
if (!rhs._isTexture3DSupported) _isTexture3DSupported = false;
|
|
if (!rhs._isTexture3DFast) _isTexture3DFast = false;
|
|
if (rhs._maxTexture3DSize<_maxTexture3DSize) _maxTexture3DSize = rhs._maxTexture3DSize;
|
|
|
|
if (!rhs.glTexImage3D) glTexImage3D = 0;
|
|
if (!rhs.glTexSubImage3D) glTexSubImage3D = 0;
|
|
if (!rhs.glCompressedTexImage3D) glCompressedTexImage3D = 0;
|
|
if (!rhs.glCompressedTexSubImage3D) glCompressedTexSubImage3D = 0;
|
|
if (!rhs.glCopyTexSubImage3D) glCopyTexSubImage3D = 0;
|
|
}
|
|
|
|
void Texture3D::Extensions::setupGLExtensions(unsigned int contextID)
|
|
{
|
|
_isTexture3DFast = OSG_GL3_FEATURES || isGLExtensionSupported(contextID,"GL_EXT_texture3D");
|
|
|
|
if (_isTexture3DFast) _isTexture3DSupported = true;
|
|
else _isTexture3DSupported = strncmp((const char*)glGetString(GL_VERSION),"1.2",3)>=0;
|
|
|
|
_maxTexture3DSize = 0;
|
|
glGetIntegerv(GL_MAX_3D_TEXTURE_SIZE, &_maxTexture3DSize);
|
|
|
|
setGLExtensionFuncPtr(glTexImage3D,"glTexImage3D","glTexImage3DEXT");
|
|
setGLExtensionFuncPtr(glTexSubImage3D,"glTexSubImage3D","glTexSubImage3DEXT");
|
|
setGLExtensionFuncPtr(glCompressedTexImage3D,"glCompressedTexImage3D","glCompressedTexImage3DARB");
|
|
setGLExtensionFuncPtr(glCompressedTexSubImage3D,"glCompressedTexSubImage3D","glCompressedTexSubImage3DARB");
|
|
setGLExtensionFuncPtr(glCopyTexSubImage3D,"glCopyTexSubImage3D","glCopyTexSubImage3DEXT");
|
|
|
|
}
|