748 lines
26 KiB
C++
748 lines
26 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/Texture2DArray>
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#include <osg/State>
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#include <osg/Notify>
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#include <string.h>
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//#define DO_TIMING
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using namespace osg;
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Texture2DArray::Texture2DArray():
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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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Texture2DArray::Texture2DArray(const Texture2DArray& text,const CopyOp& copyop):
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Texture(text,copyop),
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_textureWidth(text._textureWidth),
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_textureHeight(text._textureHeight),
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_textureDepth(0),
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_numMipmapLevels(text._numMipmapLevels),
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_subloadCallback(text._subloadCallback)
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{
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setTextureDepth(text._textureDepth);
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for(unsigned int i = 0; i<static_cast<unsigned int>(_images.size()); ++i)
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{
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setImage(i, copyop(text._images[i].get()));
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}
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}
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Texture2DArray::~Texture2DArray()
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{
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for(unsigned int i = 0; i<static_cast<unsigned int>(_images.size()); ++i)
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{
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setImage(i, NULL);
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}
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}
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int Texture2DArray::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(Texture2DArray,sa)
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if (_images.size()<rhs._images.size()) return -1;
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if (_images.size()>rhs._images.size()) return 1;
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bool noImages = true;
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for (unsigned int n=0; n < static_cast<unsigned int>(_images.size()); n++)
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{
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if (noImages && _images[n].valid()) noImages = false;
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if (noImages && rhs._images[n].valid()) noImages = false;
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if (_images[n]!=rhs._images[n]) // smart pointer comparison.
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{
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if (_images[n].valid())
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{
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if (rhs._images[n].valid())
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{
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int result = _images[n]->compare(*rhs._images[n]);
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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._images[n].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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}
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if (noImages)
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{
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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 Texture2DArray::setImage(unsigned int layer, Image* image)
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{
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if (layer>= static_cast<unsigned int>(_images.size()))
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{
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// _images vector not large enough to contain layer so expand it.
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_images.resize(layer+1);
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_modifiedCount.resize(layer+1);
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}
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else
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{
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// do not need to replace already assigned images
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if (_images[layer] == image) return;
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}
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unsigned numImageRequireUpdateBefore = 0;
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for (unsigned int i=0; i<getNumImages(); ++i)
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{
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if (_images[i].valid() && _images[i]->requiresUpdateCall()) ++numImageRequireUpdateBefore;
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}
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if (_images[layer].valid())
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{
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_images[layer]->removeClient(this);
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}
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// set image
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_images[layer] = image;
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_modifiedCount[layer].setAllElementsTo(0);
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if (_images[layer].valid())
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{
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_images[layer]->addClient(this);
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}
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// find out if we need to reset the update callback to handle the animation of image
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unsigned numImageRequireUpdateAfter = 0;
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for (unsigned int i=0; i<getNumImages(); ++i)
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{
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if (_images[i].valid() && _images[i]->requiresUpdateCall()) ++numImageRequireUpdateAfter;
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}
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if (numImageRequireUpdateBefore>0)
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{
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if (numImageRequireUpdateAfter==0)
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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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}
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else if (numImageRequireUpdateAfter>0)
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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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Image* Texture2DArray::getImage(unsigned int layer)
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{
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return (layer<static_cast<unsigned int>(_images.size())) ? _images[layer].get() : 0;
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}
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const Image* Texture2DArray::getImage(unsigned int layer) const
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{
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return (layer<static_cast<unsigned int>(_images.size())) ? _images[layer].get() : 0;
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}
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bool Texture2DArray::imagesValid() const
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{
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if (_images.empty()) return false;
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for(Images::const_iterator itr = _images.begin();
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itr != _images.end();
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++itr)
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{
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if (!(itr->valid()) || !((*itr)->valid())) return false;
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}
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return true;
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}
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void Texture2DArray::setTextureSize(int width, int height, int depth)
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{
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// set dimensions
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_textureWidth = width;
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_textureHeight = height;
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setTextureDepth(depth);
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}
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void Texture2DArray::setTextureDepth(int depth)
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{
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// if we decrease the number of layers, then delete non-used
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if (depth < static_cast<int>(_images.size()))
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{
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_images.resize(depth);
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_modifiedCount.resize(depth);
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}
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// resize the texture array
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_textureDepth = depth;
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}
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void Texture2DArray::computeInternalFormat() const
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{
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if (imagesValid()) computeInternalFormatWithImage(*_images[0]);
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else computeInternalFormatType();
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}
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GLsizei Texture2DArray::computeTextureDepth() const
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{
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GLsizei textureDepth = _textureDepth;
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if (textureDepth==0)
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{
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for(Images::const_iterator itr = _images.begin();
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itr != _images.end();
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++itr)
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{
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const osg::Image* image = itr->get();
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if (image) textureDepth += image->r();
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}
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}
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return textureDepth;
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}
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void Texture2DArray::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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const GLExtensions* extensions = state.get<GLExtensions>();
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// if not supported, then return
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if (!extensions->isTexture2DArraySupported || !extensions->isTexture3DSupported)
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{
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OSG_WARN<<"Warning: Texture2DArray::apply(..) failed, 2D texture arrays are 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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GLsizei textureDepth = computeTextureDepth();
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if (textureObject && textureDepth>0)
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{
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const osg::Image* image = (_images.size()>0) ? _images[0].get() : 0;
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if (image && getModifiedCount(0, 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_numMipmapLevels;
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// compute the dimensions of the texture.
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computeRequiredTextureDimensions(state, *image, new_width, new_height, new_numMipmapLevels);
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if (!textureObject->match(GL_TEXTURE_2D_ARRAY_EXT, new_numMipmapLevels, _internalFormat, new_width, new_height, textureDepth, _borderWidth))
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{
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_textureObjectBuffer[contextID]->release();
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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 we already have an texture object, then
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if (textureObject)
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{
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// bind texture object
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textureObject->bind();
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// if subload is specified, then use it to subload the images to GPU memory
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if (_subloadCallback.valid())
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{
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applyTexParameters(GL_TEXTURE_2D_ARRAY,state);
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_subloadCallback->subload(*this,state);
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}
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else
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{
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bool applyParameters = true;
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GLsizei n = 0;
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for(Images::const_iterator itr = _images.begin();
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itr != _images.end();
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++itr)
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{
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osg::Image* image = itr->get();
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if (image)
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{
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if (getModifiedCount(n,contextID) != image->getModifiedCount())
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{
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getModifiedCount(n,contextID) = image->getModifiedCount();
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if (applyParameters)
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{
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applyTexParameters(GL_TEXTURE_2D_ARRAY,state);
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applyParameters = false;
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}
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applyTexImage2DArray_subload(state, image, n, _textureWidth, _textureHeight, image->r(), _internalFormat, _numMipmapLevels);
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}
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n += image->r();
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}
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}
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}
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// if texture parameters changed, then reset them
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if (getTextureParameterDirty(state.getContextID()))
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applyTexParameters(GL_TEXTURE_2D_ARRAY,state);
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}
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// there is no texture object, but exists a subload callback, so use it to upload images
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else if (_subloadCallback.valid())
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{
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// generate texture (i.e. glGenTexture) and apply parameters
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textureObject = generateAndAssignTextureObject(contextID, GL_TEXTURE_2D_ARRAY_EXT);
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textureObject->bind();
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applyTexParameters(GL_TEXTURE_2D_ARRAY_EXT, state);
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_subloadCallback->load(*this,state);
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}
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// nothing before, but we have valid images, so do manual upload and create texture object manually
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// TODO: we assume _images[0] is valid, however this may not be always the case
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// some kind of checking for the first valid image is required (Art, may 2008)
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else if (imagesValid())
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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,*_images[0],_textureWidth, _textureHeight, _numMipmapLevels);
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// create texture object
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textureObject = generateAndAssignTextureObject(
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contextID, GL_TEXTURE_2D_ARRAY_EXT,_numMipmapLevels, _internalFormat, _textureWidth, _textureHeight, textureDepth,0);
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// bind texture
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textureObject->bind();
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applyTexParameters(GL_TEXTURE_2D_ARRAY_EXT, state);
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// First we need to allocate the texture memory
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int sourceFormat = _sourceFormat ? _sourceFormat : _internalFormat;
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if( isCompressedInternalFormat( sourceFormat ) &&
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sourceFormat == _internalFormat &&
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extensions->isCompressedTexImage3DSupported() )
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{
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extensions->glCompressedTexImage3D( GL_TEXTURE_2D_ARRAY_EXT, 0, _internalFormat,
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_textureWidth, _textureHeight, textureDepth, _borderWidth,
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_images[0]->getImageSizeInBytes() * textureDepth,
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0);
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}
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else
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{
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// Override compressed source format with safe GL_RGBA value which not generate error
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// We can safely do this as source format is not important when source data is NULL
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if( isCompressedInternalFormat( sourceFormat ) )
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sourceFormat = GL_RGBA;
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extensions->glTexImage3D( GL_TEXTURE_2D_ARRAY_EXT, 0, _internalFormat,
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_textureWidth, _textureHeight, textureDepth, _borderWidth,
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sourceFormat, _sourceType ? _sourceType : GL_UNSIGNED_BYTE,
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0);
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}
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// For certain we have to manually allocate memory for mipmaps if images are compressed
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// if not allocated OpenGL will produce errors on mipmap upload.
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// I have not tested if this is necessary for plain texture formats but
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// common sense suggests its required as well.
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if( _min_filter != LINEAR && _min_filter != NEAREST && _images[0]->isMipmap() )
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{
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allocateMipmap( state );
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}
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GLsizei n = 0;
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for(Images::const_iterator itr = _images.begin();
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itr != _images.end();
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++itr)
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{
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osg::Image* image = itr->get();
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if (image)
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{
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if (getModifiedCount(n,contextID) != image->getModifiedCount())
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{
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getModifiedCount(n,contextID) = image->getModifiedCount();
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applyTexImage2DArray_subload(state, image, n, _textureWidth, _textureHeight, image->r(), _internalFormat, _numMipmapLevels);
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}
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n += image->r();
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}
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}
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// source images have no mipmamps but we could generate them...
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if( _min_filter != LINEAR && _min_filter != NEAREST && !_images[0]->isMipmap() &&
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_useHardwareMipMapGeneration && extensions->isGenerateMipMapSupported )
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{
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_numMipmapLevels = Image::computeNumberOfMipmapLevels( _textureWidth, _textureHeight );
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generateMipmap( state );
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}
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textureObject->setAllocated(_numMipmapLevels, _internalFormat, _textureWidth, _textureHeight, textureDepth,0);
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// unref image data?
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if (isSafeToUnrefImageData(state))
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{
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Texture2DArray* non_const_this = const_cast<Texture2DArray*>(this);
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for(Images::iterator itr = non_const_this->_images.begin();
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itr != non_const_this->_images.end();
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++itr)
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{
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osg::Image* image = itr->get();
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if (image && image->getDataVariance()==STATIC)
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{
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*itr = NULL;
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}
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}
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}
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}
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// No images present, but dimensions are set. So create empty texture
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else if ( (_textureWidth > 0) && (_textureHeight > 0) && (_textureDepth > 0) && (_internalFormat!=0) )
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{
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// generate texture
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textureObject = generateAndAssignTextureObject(
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contextID, GL_TEXTURE_2D_ARRAY_EXT,_numMipmapLevels,_internalFormat, _textureWidth, _textureHeight, _textureDepth,0);
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textureObject->bind();
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applyTexParameters(GL_TEXTURE_2D_ARRAY_EXT,state);
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extensions->glTexImage3D( GL_TEXTURE_2D_ARRAY_EXT, 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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}
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// nothing before, so just unbind the texture target
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else
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{
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glBindTexture( GL_TEXTURE_2D_ARRAY_EXT, 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 Texture2DArray::applyTexImage2DArray_subload(State& state, Image* image, GLsizei layer, GLsizei inwidth, GLsizei inheight, GLsizei indepth, GLint inInternalFormat, 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 (!imagesValid())
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return;
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#ifdef DO_TIMING
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osg::Timer_t start_tick = osg::Timer::instance()->tick();
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OSG_NOTICE<<"Texture2DArray::applyTexImage2DArray_subload() = "<<(void*)image<<std::endl;
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#endif
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const unsigned int contextID = state.getContextID();
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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 GLExtensions* extensions = state.get<GLExtensions>();
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GLenum target = GL_TEXTURE_2D_ARRAY_EXT;
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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 the required layer is exceeds the maximum allowed layer sizes
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if (indepth > extensions->maxLayerCount)
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{
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// we give a warning and do nothing
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OSG_WARN<<"Warning: Texture2DArray::applyTexImage2DArray_subload(..) the given layer number exceeds the maximum number of supported layers."<<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 || !extensions->isNonPowerOfTwoTextureSupported(_min_filter)
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|| inwidth > extensions->max2DSize
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|| inheight > extensions->max2DSize)
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image->ensureValidSizeForTexturing(extensions->max2DSize);
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// image size or format has changed, this is not allowed, hence return
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if (image->s()!=inwidth ||
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image->t()!=inheight ||
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image->getInternalTextureFormat()!=inInternalFormat )
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{
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OSG_WARN<<"Warning: Texture2DArray::applyTexImage2DArray_subload(..) given image do have wrong dimension or internal format."<<std::endl;
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return;
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}
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glPixelStorei(GL_UNPACK_ALIGNMENT,image->getPacking());
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#if !defined(OSG_GLES1_AVAILABLE) && !defined(OSG_GLES2_AVAILABLE)
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glPixelStorei(GL_UNPACK_ROW_LENGTH,image->getRowLength());
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#endif
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bool mipmappingRequired = _min_filter != LINEAR && _min_filter != NEAREST;
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bool useHardwareMipMapGeneration = mipmappingRequired && !image->isMipmap();
|
|
unsigned char* dataPtr = (unsigned char*)image->data();
|
|
|
|
GLBufferObject* pbo = image->getOrCreateGLBufferObject(contextID);
|
|
if (pbo)
|
|
{
|
|
state.bindPixelBufferObject(pbo);
|
|
dataPtr = reinterpret_cast<unsigned char*>(pbo->getOffset(image->getBufferIndex()));
|
|
|
|
}
|
|
else
|
|
{
|
|
pbo = 0;
|
|
}
|
|
|
|
#ifdef DO_TIMING
|
|
OSG_NOTICE<<" Texture2DArray::applyTexImage2DArray_subload() pbo="<<pbo<<", before copy time = "<<osg::Timer::instance()->delta_m(start_tick,osg::Timer::instance()->tick())<<"ms"<<std::endl;
|
|
start_tick = osg::Timer::instance()->tick();
|
|
#endif
|
|
|
|
// if no special mipmapping is required, then
|
|
if( _min_filter == LINEAR || _min_filter == NEAREST || useHardwareMipMapGeneration )
|
|
{
|
|
if( _min_filter == LINEAR || _min_filter == NEAREST )
|
|
numMipmapLevels = 1;
|
|
else //Hardware Mipmap Generation
|
|
numMipmapLevels = image->getNumMipmapLevels();
|
|
|
|
// upload non-compressed image
|
|
if ( !compressed_image )
|
|
{
|
|
//OSG_NOTICE<<"Texture2DArray::applyTexImage2DArray_subload()"<<std::endl;
|
|
#if 1
|
|
extensions->glTexSubImage3D( target, 0,
|
|
0, 0, layer,
|
|
inwidth, inheight, indepth,
|
|
(GLenum)image->getPixelFormat(),
|
|
(GLenum)image->getDataType(),
|
|
dataPtr );
|
|
#endif
|
|
}
|
|
|
|
// if we support compression and image is compressed, then
|
|
else if (extensions->isCompressedTexImage3DSupported())
|
|
{
|
|
// OSG_WARN<<"glCompressedTexImage3D "<<inwidth<<", "<<inheight<<", "<<indepth<<std::endl;
|
|
|
|
GLint blockSize, size;
|
|
getCompressedSize(_internalFormat, inwidth, inheight, 1, blockSize,size);
|
|
|
|
extensions->glCompressedTexSubImage3D(target, 0,
|
|
0, 0, layer,
|
|
inwidth, inheight, indepth,
|
|
(GLenum)image->getPixelFormat(),
|
|
size,
|
|
dataPtr);
|
|
}
|
|
|
|
// we want to use mipmapping, so enable it
|
|
}
|
|
else
|
|
{
|
|
// image does not provide mipmaps, so we have to create them
|
|
if( !image->isMipmap() )
|
|
{
|
|
numMipmapLevels = 1;
|
|
OSG_WARN<<"Warning: Texture2DArray::applyTexImage2DArray_subload(..) mipmap layer not passed, and auto mipmap generation turned off or not available. Check texture's min/mag filters & hardware mipmap generation."<<std::endl;
|
|
|
|
// the image object does provide mipmaps, so upload the in the certain levels of a layer
|
|
}
|
|
else
|
|
{
|
|
numMipmapLevels = image->getNumMipmapLevels();
|
|
|
|
int width = image->s();
|
|
int height = image->t();
|
|
|
|
if( !compressed_image )
|
|
{
|
|
|
|
for( GLsizei k = 0 ; k < numMipmapLevels && (width || height ) ;k++)
|
|
{
|
|
if (width == 0)
|
|
width = 1;
|
|
if (height == 0)
|
|
height = 1;
|
|
|
|
extensions->glTexSubImage3D( target, k, 0, 0, layer,
|
|
width, height, indepth,
|
|
(GLenum)image->getPixelFormat(),
|
|
(GLenum)image->getDataType(),
|
|
dataPtr + image->getMipmapOffset(k));
|
|
|
|
width >>= 1;
|
|
height >>= 1;
|
|
}
|
|
}
|
|
else if (extensions->isCompressedTexImage3DSupported())
|
|
{
|
|
GLint blockSize,size;
|
|
for( GLsizei k = 0 ; k < numMipmapLevels && (width || height) ;k++)
|
|
{
|
|
if (width == 0)
|
|
width = 1;
|
|
if (height == 0)
|
|
height = 1;
|
|
|
|
getCompressedSize(image->getInternalTextureFormat(), width, height, indepth, blockSize,size);
|
|
|
|
// state.checkGLErrors("before extensions->glCompressedTexSubImage3D(");
|
|
|
|
extensions->glCompressedTexSubImage3D(target, k, 0, 0, layer,
|
|
width, height, indepth,
|
|
(GLenum)image->getPixelFormat(),
|
|
size,
|
|
dataPtr + image->getMipmapOffset(k));
|
|
|
|
// state.checkGLErrors("after extensions->glCompressedTexSubImage3D(");
|
|
|
|
width >>= 1;
|
|
height >>= 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if (pbo)
|
|
{
|
|
state.unbindPixelBufferObject();
|
|
}
|
|
#ifdef DO_TIMING
|
|
OSG_NOTICE<<" Texture2DArray::applyTexImage2DArray_subload() pbo="<<pbo<<", copy time = "<<osg::Timer::instance()->delta_m(start_tick,osg::Timer::instance()->tick())<<"ms"<<std::endl;
|
|
#endif
|
|
}
|
|
|
|
|
|
void Texture2DArray::copyTexSubImage2DArray(State& state, int xoffset, int yoffset, int zoffset, int x, int y, int width, int height )
|
|
{
|
|
const unsigned int contextID = state.getContextID();
|
|
const GLExtensions* extensions = state.get<GLExtensions>();
|
|
|
|
// get the texture object for the current contextID.
|
|
TextureObject* textureObject = getTextureObject(contextID);
|
|
|
|
// if texture object is valid
|
|
if (textureObject != 0)
|
|
{
|
|
textureObject->bind();
|
|
|
|
applyTexParameters(GL_TEXTURE_2D_ARRAY_EXT,state);
|
|
extensions->glCopyTexSubImage3D( GL_TEXTURE_2D_ARRAY_EXT, 0, xoffset,yoffset,zoffset, x, y, width, height);
|
|
|
|
// inform state that this texture is the current one bound.
|
|
state.haveAppliedTextureAttribute(state.getActiveTextureUnit(), this);
|
|
|
|
}
|
|
else
|
|
{
|
|
OSG_WARN<<"Warning: Texture2DArray::copyTexSubImage2DArray(..) failed, cannot not copy to a non existent texture."<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Texture2DArray::allocateMipmap(State& state) const
|
|
{
|
|
const unsigned int contextID = state.getContextID();
|
|
|
|
// get the texture object for the current contextID.
|
|
TextureObject* textureObject = getTextureObject(contextID);
|
|
|
|
GLsizei textureDepth = computeTextureDepth();
|
|
|
|
if (textureObject && _textureWidth != 0 && _textureHeight != 0 && textureDepth != 0)
|
|
{
|
|
const GLExtensions* extensions = state.get<GLExtensions>();
|
|
|
|
int safeSourceFormat = _sourceFormat ? _sourceFormat : _internalFormat;
|
|
|
|
// Make sure source format does not contain compressed formats value (like DXT3)
|
|
// they are invalid when passed to glTexImage3D source format parameter
|
|
if( isCompressedInternalFormat( safeSourceFormat ) )
|
|
{
|
|
if( safeSourceFormat != _internalFormat || !extensions->isCompressedTexImage3DSupported() )
|
|
safeSourceFormat = GL_RGBA;
|
|
}
|
|
|
|
// bind texture
|
|
textureObject->bind();
|
|
|
|
// compute number of mipmap levels
|
|
int width = _textureWidth;
|
|
int height = _textureHeight;
|
|
int numMipmapLevels = Image::computeNumberOfMipmapLevels(width, height);
|
|
|
|
// we do not reallocate the level 0, since it was already allocated
|
|
width >>= 1;
|
|
height >>= 1;
|
|
|
|
for( GLsizei k = 1; k < numMipmapLevels && (width || height); k++)
|
|
{
|
|
if (width == 0)
|
|
width = 1;
|
|
if (height == 0)
|
|
height = 1;
|
|
|
|
if( isCompressedInternalFormat(safeSourceFormat) )
|
|
{
|
|
int size = 0, blockSize = 0;
|
|
|
|
getCompressedSize( _internalFormat, width, height, textureDepth, blockSize, size);
|
|
|
|
extensions->glCompressedTexImage3D( GL_TEXTURE_2D_ARRAY_EXT, k, _internalFormat,
|
|
width, height, _textureDepth, _borderWidth,
|
|
size,
|
|
NULL);
|
|
}
|
|
else
|
|
{
|
|
extensions->glTexImage3D( GL_TEXTURE_2D_ARRAY_EXT, k, _internalFormat,
|
|
width, height, textureDepth, _borderWidth,
|
|
safeSourceFormat, _sourceType ? _sourceType : GL_UNSIGNED_BYTE,
|
|
NULL);
|
|
}
|
|
|
|
width >>= 1;
|
|
height >>= 1;
|
|
}
|
|
|
|
// inform state that this texture is the current one bound.
|
|
state.haveAppliedTextureAttribute(state.getActiveTextureUnit(), this);
|
|
}
|
|
}
|