Hello Robert!
I've fixed bug with loading of compressed texture to texture array!
With best regards,
Konstantin Sinitsyn!
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#include <osg/GLExtensions>
#include <osg/Texture2DArray>
#include <osg/State>
#include <osg/ImageSequence>
#include <osg/Notify>
#include <string.h>
using namespace osg;
Texture2DArray::Texture2DArray():
_textureWidth(0),
_textureHeight(0),
_textureDepth(0),
_numMipmapLevels(0)
{
}
Texture2DArray::Texture2DArray(const Texture2DArray& text,const CopyOp& copyop):
Texture(text,copyop),
_textureWidth(text._textureWidth),
_textureHeight(text._textureHeight),
_textureDepth(text._textureDepth),
_numMipmapLevels(text._numMipmapLevels),
_subloadCallback(text._subloadCallback)
{
// copy all images by iterating through all of them
for (int i=0; i < text._textureDepth; i++)
{
_images.push_back(copyop(text._images[i].get()));
_modifiedCount.push_back(ImageModifiedCount());
}
}
Texture2DArray::~Texture2DArray()
{
}
int Texture2DArray::compare(const StateAttribute& sa) const
{
// check the types are equal and then create the rhs variable
// used by the COMPARE_StateAttribute_Parameter macro's below.
COMPARE_StateAttribute_Types(Texture2DArray,sa)
bool noImages = true;
for (int n=0; n < _textureDepth; n++)
{
if (noImages && _images[n].valid()) noImages = false;
if (noImages && rhs._images[n].valid()) noImages = false;
if (_images[n]!=rhs._images[n]) // smart pointer comparison.
{
if (_images[n].valid())
{
if (rhs._images[n].valid())
{
int result = _images[n]->compare(*rhs._images[n]);
if (result!=0) return result;
}
else
{
return 1; // valid lhs._image is greater than null.
}
}
else if (rhs._images[n].valid())
{
return -1; // valid rhs._image is greater than null.
}
}
}
if (noImages)
{
int result = compareTextureObjects(rhs);
if (result!=0) return result;
}
int result = compareTexture(rhs);
if (result!=0) return result;
// compare each parameter in turn against the rhs.
COMPARE_StateAttribute_Parameter(_textureWidth)
COMPARE_StateAttribute_Parameter(_textureHeight)
COMPARE_StateAttribute_Parameter(_textureDepth)
COMPARE_StateAttribute_Parameter(_subloadCallback)
return 0; // passed all the above comparison macro's, must be equal.
}
void Texture2DArray::setImage(unsigned int layer, Image* image)
{
// check if the layer exceeds the texture depth
if (static_cast<int>(layer) >= _textureDepth)
{
// print warning and do nothing
notify(WARN)<<"Warning: Texture2DArray::setImage(..) failed, the given
layer number is bigger then the size of the texture array."<<std::endl;
return;
}
if (_images[layer] == image) return;
unsigned numImageSequencesBefore = 0;
for (unsigned int i=0; i<getNumImages(); ++i)
{
osg::ImageSequence* is =
dynamic_cast<osg::ImageSequence*>(_images[i].get());
if (is) ++numImageSequencesBefore;
}
// set image
_images[layer] = image;
_modifiedCount[layer].setAllElementsTo(0);
// find out if we need to reset the update callback to handle the animation
of ImageSequence
unsigned numImageSequencesAfter = 0;
for (unsigned int i=0; i<getNumImages(); ++i)
{
osg::ImageSequence* is =
dynamic_cast<osg::ImageSequence*>(_images[i].get());
if (is) ++numImageSequencesAfter;
}
if (numImageSequencesBefore>0)
{
if (numImageSequencesAfter==0)
{
setUpdateCallback(0);
setDataVariance(osg::Object::STATIC);
}
}
else if (numImageSequencesAfter>0)
{
setUpdateCallback(new ImageSequence::UpdateCallback());
setDataVariance(osg::Object::DYNAMIC);
}
}
void Texture2DArray::setTextureSize(int width, int height, int depth)
{
// set dimensions
_textureWidth = width;
_textureHeight = height;
setTextureDepth(depth);
}
void Texture2DArray::setTextureDepth(int depth)
{
// if we decrease the number of layers, then delete non-used
if (depth < _textureDepth)
{
_images.resize(depth);
_modifiedCount.resize(depth);
}
// if we increase the array, then add new empty elements
if (depth > _textureDepth)
{
_images.resize(depth, ref_ptr<Image>(0));
_modifiedCount.resize(depth, ImageModifiedCount());
}
// resize the texture array
_textureDepth = depth;
}
Image* Texture2DArray::getImage(unsigned int layer)
{
return _images[layer].get();
}
const Image* Texture2DArray::getImage(unsigned int layer) const
{
return _images[layer].get();
}
bool Texture2DArray::imagesValid() const
{
if (_textureDepth < 1) return false;
for (int n=0; n < _textureDepth; n++)
{
if (!_images[n].valid() || !_images[n]->data())
return false;
}
return true;
}
void Texture2DArray::computeInternalFormat() const
{
if (imagesValid()) computeInternalFormatWithImage(*_images[0]);
else computeInternalFormatType();
}
void Texture2DArray::apply(State& state) const
{
// get the contextID (user defined ID of 0 upwards) for the
// current OpenGL context.
const unsigned int contextID = state.getContextID();
const Extensions* extensions = getExtensions(contextID,true);
// if not supported, then return
if (!extensions->isTexture2DArraySupported() ||
!extensions->isTexture3DSupported())
{
notify(WARN)<<"Warning: Texture2DArray::apply(..) failed, 2D texture
arrays are not support by OpenGL driver."<<std::endl;
return;
}
// get the texture object for the current contextID.
TextureObject* textureObject = getTextureObject(contextID);
// if we already have an texture object, then
if (textureObject != 0)
{
// bind texture object
textureObject->bind();
// if texture parameters changed, then reset them
if (getTextureParameterDirty(state.getContextID()))
applyTexParameters(GL_TEXTURE_2D_ARRAY_EXT,state);
// if subload is specified, then use it to subload the images to GPU
memory
if (_subloadCallback.valid())
{
_subloadCallback->subload(*this,state);
}
else
{
// for each image of the texture array do
for (GLsizei n=0; n < _textureDepth; n++)
{
osg::Image* image = _images[n].get();
// if image content is modified, then upload it to the GPU
memory
if (image && getModifiedCount(n,contextID) !=
image->getModifiedCount())
{
applyTexImage2DArray_subload(state, image, _textureWidth,
_textureHeight, n, _internalFormat, _numMipmapLevels);
getModifiedCount(n,contextID) = image->getModifiedCount();
}
}
}
}
// there is no texture object, but exists a subload callback, so use it to
upload images
else if (_subloadCallback.valid())
{
// generate texture (i.e. glGenTexture) and apply parameters
_textureObjectBuffer[contextID] = textureObject =
generateTextureObject(contextID, GL_TEXTURE_2D_ARRAY_EXT);
textureObject->bind();
applyTexParameters(GL_TEXTURE_2D_ARRAY_EXT, state);
_subloadCallback->load(*this,state);
}
// nothing before, but we have valid images, so do manual upload and create
texture object manually
// TODO: we assume _images[0] is valid, however this may not be always the
case
// some kind of checking for the first valid image is required (Art,
may 2008)
else if (imagesValid())
{
// compute the internal texture format, this set the _internalFormat to
an appropriate value.
computeInternalFormat();
// compute the dimensions of the texture.
computeRequiredTextureDimensions(state,*_images[0],_textureWidth,
_textureHeight, _numMipmapLevels);
// create texture object
textureObject = generateTextureObject(
contextID,GL_TEXTURE_2D_ARRAY_EXT,_numMipmapLevels,_internalFormat,_textureWidth,_textureHeight,_textureDepth,0);
// bind texture
textureObject->bind();
applyTexParameters(GL_TEXTURE_2D_ARRAY_EXT, state);
// first we need to allocate the texture memory
extensions->glTexImage3D( GL_TEXTURE_2D_ARRAY_EXT, 0, _internalFormat,
_textureWidth, _textureHeight, _textureDepth,
_borderWidth,
_sourceFormat ? _sourceFormat : _internalFormat,
_sourceType ? _sourceType : GL_UNSIGNED_BYTE,
0);
// now for each layer we upload it into the memory
for (GLsizei n=0; n<_textureDepth; n++)
{
// if image is valid then upload it to the texture memory
osg::Image* image = _images[n].get();
if (image)
{
// now load the image data into the memory, this will also
check if image do have valid properties
applyTexImage2DArray_subload(state, image, _textureWidth,
_textureHeight, n, _internalFormat, _numMipmapLevels);
getModifiedCount(n,contextID) = image->getModifiedCount();
}
}
textureObject->setAllocated(_numMipmapLevels,_internalFormat,_textureWidth,_textureHeight,_textureDepth,0);
_textureObjectBuffer[contextID] = textureObject;
// no idea what this for ;-)
if (_unrefImageDataAfterApply && areAllTextureObjectsLoaded())
{
Texture2DArray* non_const_this = const_cast<Texture2DArray*>(this);
for (int n=0; n<_textureDepth; n++)
{
if (_images[n].valid() && _images[n]->getDataVariance()==STATIC)
{
non_const_this->_images[n] = 0;
}
}
}
}
// No images present, but dimensions are set. So create empty texture
else if ( (_textureWidth > 0) && (_textureHeight > 0) && (_textureDepth >
0) && (_internalFormat!=0) )
{
// generate texture
_textureObjectBuffer[contextID] = textureObject = generateTextureObject(
contextID,
GL_TEXTURE_2D_ARRAY_EXT,_numMipmapLevels,_internalFormat,_textureWidth,_textureHeight,_textureDepth,0);
textureObject->bind();
applyTexParameters(GL_TEXTURE_2D_ARRAY_EXT,state);
extensions->glTexImage3D( GL_TEXTURE_2D_ARRAY_EXT, 0, _internalFormat,
_textureWidth, _textureHeight, _textureDepth,
_borderWidth,
_sourceFormat ? _sourceFormat : _internalFormat,
_sourceType ? _sourceType : GL_UNSIGNED_BYTE,
0);
}
// nothing before, so just unbind the texture target
else
{
glBindTexture( GL_TEXTURE_2D_ARRAY_EXT, 0 );
}
// if texture object is now valid and we have to allocate mipmap levels,
then
if (textureObject != 0 && _texMipmapGenerationDirtyList[contextID])
{
generateMipmap(state);
}
}
void Texture2DArray::applyTexImage2DArray_subload(State& state, Image* image,
GLsizei inwidth, GLsizei inheight, GLsizei indepth, GLint inInternalFormat,
GLsizei& numMipmapLevels) const
{
// if we don't have a valid image we can't create a texture!
if (!imagesValid())
return;
// get the contextID (user defined ID of 0 upwards) for the
// current OpenGL context.
const unsigned int contextID = state.getContextID();
const Extensions* extensions = getExtensions(contextID,true);
const Texture::Extensions* texExtensions =
Texture::getExtensions(contextID,true);
GLenum target = GL_TEXTURE_2D_ARRAY_EXT;
// compute the internal texture format, this set the _internalFormat to an
appropriate value.
computeInternalFormat();
// select the internalFormat required for the texture.
// bool compressed = isCompressedInternalFormat(_internalFormat);
bool compressed_image =
isCompressedInternalFormat((GLenum)image->getPixelFormat());
// if the required layer is exceeds the maximum allowed layer sizes
if (indepth > extensions->maxLayerCount())
{
// we give a warning and do nothing
notify(WARN)<<"Warning:
Texture2DArray::applyTexImage2DArray_subload(..) the given layer number exceeds
the maximum number of supported layers."<<std::endl;
return;
}
//Rescale if resize hint is set or NPOT not supported or dimensions exceed
max size
if( _resizeNonPowerOfTwoHint ||
!texExtensions->isNonPowerOfTwoTextureSupported(_min_filter)
|| inwidth > extensions->max2DSize()
|| inheight > extensions->max2DSize())
image->ensureValidSizeForTexturing(extensions->max2DSize());
// image size or format has changed, this is not allowed, hence return
if (image->s()!=inwidth ||
image->t()!=inheight ||
image->getInternalTextureFormat()!=inInternalFormat )
{
notify(WARN)<<"Warning:
Texture2DArray::applyTexImage2DArray_subload(..) given image do have wrong
dimension or internal format."<<std::endl;
return;
}
glPixelStorei(GL_UNPACK_ALIGNMENT,image->getPacking());
// if no special mipmapping is required, then
if( _min_filter == LINEAR || _min_filter == NEAREST )
{
numMipmapLevels = 1;
// upload non-compressed image
if (!compressed_image)
{
extensions->glTexSubImage3D( target, 0,
0, 0, indepth,
inwidth, inheight, 1,
(GLenum)image->getPixelFormat(),
(GLenum)image->getDataType(),
image->data() );
}
// if we support compression and image is compressed, then
else if (extensions->isCompressedTexImage3DSupported())
{
// notify(WARN)<<"glCompressedTexImage3D "<<inwidth<<",
"<<inheight<<", "<<indepth<<std::endl;
numMipmapLevels = 1;
GLint blockSize, size;
getCompressedSize(_internalFormat, inwidth, inheight, 1,
blockSize,size);
extensions->glCompressedTexSubImage3D(target, 0,
0, 0, indepth,
inwidth, inheight, 1,
(GLenum)image->getPixelFormat(),
size,
image->data());
}
// we want to use mipmapping, so enable it
}else
{
// image does not provide mipmaps, so we have to create them
if(!image->isMipmap())
{
notify(WARN)<<"Warning:
Texture2DArray::applyTexImage2DArray_subload(..) automagic mipmap generation is
currently not implemented. Check texture's min/mag filters."<<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();
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, indepth,
width, height, 1,
(GLenum)image->getPixelFormat(),
(GLenum)image->getDataType(),
image->getMipmapData(k));
width >>= 1;
height >>= 1;
}
}
}
}
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 Extensions* extensions = getExtensions(contextID,true);
// 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
{
notify(WARN)<<"Warning: Texture2DArray::copyTexSubImage2DArray(..)
failed, cannot not copy to a non existant 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);
if (textureObject && _textureWidth != 0 && _textureHeight != 0 &&
_textureDepth != 0)
{
const Extensions* extensions = getExtensions(contextID,true);
// const Texture::Extensions* texExtensions =
Texture::getExtensions(contextID,true);
// 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;
extensions->glTexImage3D( GL_TEXTURE_2D_ARRAY_EXT, k,
_internalFormat,
width, height, _textureDepth, _borderWidth,
_sourceFormat ? _sourceFormat : _internalFormat,
_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);
}
}
typedef buffered_value< ref_ptr<Texture2DArray::Extensions> >
BufferedExtensions;
static BufferedExtensions s_extensions;
Texture2DArray::Extensions* Texture2DArray::getExtensions(unsigned int
contextID,bool createIfNotInitalized)
{
if (!s_extensions[contextID] && createIfNotInitalized)
s_extensions[contextID] = new Extensions(contextID);
return s_extensions[contextID].get();
}
void Texture2DArray::setExtensions(unsigned int contextID,Extensions*
extensions)
{
s_extensions[contextID] = extensions;
}
Texture2DArray::Extensions::Extensions(unsigned int contextID)
{
setupGLExtensions(contextID);
}
Texture2DArray::Extensions::Extensions(const Extensions& rhs):
Referenced()
{
_isTexture3DSupported = rhs._isTexture3DSupported;
_isTexture2DArraySupported = rhs._isTexture2DArraySupported;
_max2DSize = rhs._max2DSize;
_maxLayerCount = rhs._maxLayerCount;
_glTexImage3D = rhs._glTexImage3D;
_glTexSubImage3D = rhs._glTexSubImage3D;
_glCopyTexSubImage3D = rhs._glCopyTexSubImage3D;
_glCompressedTexImage3D = rhs._glCompressedTexImage3D;
_glCompressedTexSubImage3D = rhs._glCompressedTexSubImage3D;;
}
void Texture2DArray::Extensions::lowestCommonDenominator(const Extensions& rhs)
{
if (!rhs._isTexture3DSupported) _isTexture3DSupported =
false;
if (!rhs._isTexture2DArraySupported) _isTexture2DArraySupported
= false;
if (rhs._max2DSize<_max2DSize) _max2DSize = rhs._max2DSize;
if (rhs._maxLayerCount<_maxLayerCount) _maxLayerCount =
rhs._maxLayerCount;
if (!rhs._glTexImage3D) _glTexImage3D = 0;
if (!rhs._glTexSubImage3D) _glTexSubImage3D = 0;
if (!rhs._glCompressedTexImage3D) _glTexImage3D = 0;
if (!rhs._glCompressedTexSubImage3D) _glTexSubImage3D = 0;
if (!rhs._glCopyTexSubImage3D) _glCopyTexSubImage3D = 0;
}
void Texture2DArray::Extensions::setupGLExtensions(unsigned int contextID)
{
_isTexture3DSupported =
isGLExtensionSupported(contextID,"GL_EXT_texture3D");
_isTexture2DArraySupported =
isGLExtensionSupported(contextID,"GL_EXT_texture_array");
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &_max2DSize);
glGetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS_EXT, &_maxLayerCount);
setGLExtensionFuncPtr(_glTexImage3D, "glTexImage3D","glTexImage3DEXT");
setGLExtensionFuncPtr(_glTexSubImage3D,
"glTexSubImage3D","glTexSubImage3DEXT");
setGLExtensionFuncPtr(_glCompressedTexImage3D,
"glCompressedTexImage3D","glCompressedTexImage3DARB");
setGLExtensionFuncPtr(_glCompressedTexSubImage3D,
"glCompressedTexSubImage3D","glCompressedTexSubImage3DARB");
setGLExtensionFuncPtr(_glCopyTexSubImage3D,
"glCopyTexSubImage3D","glCopyTexSubImage3DEXT");
}
void Texture2DArray::Extensions::glTexImage3D( GLenum target, GLint level,
GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint
border, GLenum format, GLenum type, const GLvoid *pixels) const
{
if (_glTexImage3D)
{
_glTexImage3D( target, level, internalFormat, width, height, depth,
border, format, type, pixels);
}
else
{
notify(WARN)<<"Error: glTexImage3D not supported by OpenGL
driver"<<std::endl;
}
}
void Texture2DArray::Extensions::glTexSubImage3D( GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height,
GLsizei depth, GLenum format, GLenum type, const GLvoid *pixels) const
{
if (_glTexSubImage3D)
{
_glTexSubImage3D( target, level, xoffset, yoffset, zoffset, width,
height, depth, format, type, pixels);
}
else
{
notify(WARN)<<"Error: glTexSubImage3D not supported by OpenGL
driver"<<std::endl;
}
}
void Texture2DArray::Extensions::glCompressedTexImage3D(GLenum target, GLint
level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLsizei imageSize, const GLvoid *data) const
{
if (_glCompressedTexImage3D)
{
_glCompressedTexImage3D(target, level, internalformat, width, height,
depth, border, imageSize, data);
}
else
{
notify(WARN)<<"Error: glCompressedTexImage3D not supported by OpenGL
driver"<<std::endl;
}
}
void Texture2DArray::Extensions::glCompressedTexSubImage3D( GLenum target,
GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width,
GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const GLvoid
*data ) const
{
if (_glCompressedTexSubImage3D)
{
_glCompressedTexSubImage3D(target, level, xoffset, yoffset, zoffset,
width, height, depth, format, imageSize, data);
}
else
{
notify(WARN)<<"Error: glCompressedTexImage2D not supported by OpenGL
driver"<<std::endl;
}
}
void Texture2DArray::Extensions::glCopyTexSubImage3D( GLenum target, GLint
level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei
width, GLsizei height ) const
{
if (_glCopyTexSubImage3D)
{
_glCopyTexSubImage3D(target, level, xoffset, yoffset, zoffset, x, y,
width, height);
}
else
{
notify(WARN)<<"Error: glCopyTexSubImage3D not supported by OpenGL
driver"<<std::endl;
}
}
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