void AtomicCounterBufferBinding::readData(osg::State & state, osg::UIntArray & uintArray) const
{
if (!_bufferObject) return;
GLBufferObject* bo = _bufferObject->getOrCreateGLBufferObject( state.getContextID() );
if (!bo) return;
GLint previousID = 0;
glGetIntegerv(GL_ATOMIC_COUNTER_BUFFER_BINDING, &previousID);
if (static_cast<GLuint>(previousID) != bo->getGLObjectID())
bo->_extensions->glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, bo->getGLObjectID());
GLubyte* src = (GLubyte*)bo->_extensions->glMapBuffer(GL_ATOMIC_COUNTER_BUFFER,
GL_READ_ONLY_ARB);
if(src)
{
size_t size = osg::minimum<int>(_size, uintArray.getTotalDataSize());
memcpy((void*) &(uintArray.front()), src+_offset, size);
bo->_extensions->glUnmapBuffer(GL_ATOMIC_COUNTER_BUFFER);
}
if (static_cast<GLuint>(previousID) != bo->getGLObjectID())
bo->_extensions->glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, static_cast<GLuint>(previousID));
}
void Validator::apply(osg::State& state) const
{
if (!_effect) return;
if (_effect->_tech_selected[state.getContextID()] == 0) {
Effect::Technique_list::iterator i;
int j = 0;
for (i=_effect->_techs.begin(); i!=_effect->_techs.end(); ++i, ++j) {
if ((*i)->validate(state)) {
_effect->_sel_tech[state.getContextID()] = j;
_effect->_tech_selected[state.getContextID()] = 1;
return;
}
}
OSG_WARN << "Warning: osgFX::Validator: could not find any techniques compatible with the current OpenGL context" << std::endl;
}
}
bool Technique::validate(osg::State& state) const
{
typedef std::vector<std::string> String_list;
String_list extensions;
getRequiredExtensions(extensions);
for (String_list::const_iterator i=extensions.begin(); i!=extensions.end(); ++i) {
if (!osg::isGLExtensionSupported(state.getContextID(),i->c_str())) return false;
}
return true;
}
std::string DepthPeelBin::createFileName( osg::State& state, int pass, bool depth )
{
unsigned int contextID = state.getContextID();
int frameNumber = state.getFrameStamp()->getFrameNumber();
std::ostringstream ostr;
ostr << std::setfill( '0' );
ostr << "f" << std::setw( 6 ) << frameNumber <<
"_c" << std::setw( 2 ) << contextID << "_";
ostr << "peel_part" << _partitionNumber;
if( pass == -1 )
ostr << "_a";
else
ostr << "_b" << std::setw( 2 ) << pass;
if( depth )
ostr << "_z";
ostr << ".png";
return( ostr.str() );
}
void
DepthPeelBin::PerContextInfo::cleanup( const osg::State& state )
{
TRACEDUMP(" PerContextInfo::cleanup");
glDeleteTextures( 3, _depthTex );
_depthTex[ 0 ] = _depthTex[ 1 ] = _depthTex[ 2 ] = 0;
glDeleteTextures( 1, &_colorTex );
_colorTex = 0;
osg::FBOExtensions* fboExt( osg::FBOExtensions::instance( state.getContextID(), true ) );
osgwTools::glBindFramebuffer( fboExt, GL_FRAMEBUFFER_EXT, 0 );
osgwTools::glDeleteFramebuffers( fboExt, 1, &_fbo );
_fbo = 0;
_glDeleteQueries( 1, &_queryID );
_queryID = 0;
_init = false;
}
void Font::Glyph::draw(osg::State& state) const
{
GLuint& globj = _globjList[state.getContextID()];
// call the globj if already set otherwise compile and execute.
if( globj != 0 )
{
glCallList( globj );
}
else
{
globj = glGenLists( 1 );
glNewList( globj, GL_COMPILE_AND_EXECUTE );
glPixelStorei(GL_UNPACK_ALIGNMENT,getPacking());
glDrawPixels(s(), t(),
(GLenum)getPixelFormat(),
(GLenum)getDataType(),
data() );
glEndList();
}
}
void GlyphTexture::apply(osg::State& state) const
{
// get the contextID (user defined ID of 0 upwards) for the
// current OpenGL context.
const unsigned int contextID = state.getContextID();
if (contextID>=_glyphsToSubload.size())
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
// graphics context is beyond the number of glyphsToSubloads, so
// we must now copy the glyph list across, this is a potential
// threading issue though is multiple applies are happening the
// same time on this object - to avoid this condition number of
// graphics contexts should be set before create text.
for(unsigned int i=_glyphsToSubload.size();i<=contextID;++i)
{
GlyphPtrList& glyphPtrs = _glyphsToSubload[i];
for(GlyphRefList::const_iterator itr=_glyphs.begin();
itr!=_glyphs.end();
++itr)
{
glyphPtrs.push_back(itr->get());
}
}
}
const Extensions* extensions = getExtensions(contextID,true);
bool generateMipMapSupported = extensions->isGenerateMipMapSupported();
// get the texture object for the current contextID.
TextureObject* textureObject = getTextureObject(contextID);
bool newTextureObject = (textureObject == 0);
if (newTextureObject)
{
GLint maxTextureSize = 256;
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
if (maxTextureSize < getTextureWidth() || maxTextureSize < getTextureHeight())
{
OSG_WARN<<"Warning: osgText::Font texture size of ("<<getTextureWidth()<<", "<<getTextureHeight()<<") too large, unable to create font texture."<<std::endl;
OSG_WARN<<" Maximum supported by hardward by native OpenGL implementation is ("<<maxTextureSize<<","<<maxTextureSize<<")."<<std::endl;
OSG_WARN<<" Please set OSG_MAX_TEXTURE_SIZE lenvironment variable to "<<maxTextureSize<<" and re-run application."<<std::endl;
return;
}
// being bound for the first time, need to allocate the texture
_textureObjectBuffer[contextID] = textureObject = osg::Texture::generateTextureObject(
this, contextID,GL_TEXTURE_2D,1,GL_ALPHA,getTextureWidth(), getTextureHeight(),1,0);
textureObject->bind();
applyTexParameters(GL_TEXTURE_2D,state);
// need to look at generate mip map extension if mip mapping required.
switch(_min_filter)
{
case NEAREST_MIPMAP_NEAREST:
case NEAREST_MIPMAP_LINEAR:
case LINEAR_MIPMAP_NEAREST:
case LINEAR_MIPMAP_LINEAR:
if (generateMipMapSupported)
{
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_TRUE);
}
else glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, LINEAR);
break;
default:
// not mip mapping so no problems.
break;
}
unsigned int imageDataSize = getTextureHeight()*getTextureWidth();
unsigned char* imageData = new unsigned char[imageDataSize];
for(unsigned int i=0; i<imageDataSize; ++i)
{
imageData[i] = 0;
}
// allocate the texture memory.
glTexImage2D( GL_TEXTURE_2D, 0, GL_ALPHA,
getTextureWidth(), getTextureHeight(), 0,
GL_ALPHA,
GL_UNSIGNED_BYTE,
imageData );
delete [] imageData;
}
else
{
// reuse texture by binding.
textureObject->bind();
if (getTextureParameterDirty(contextID))
{
applyTexParameters(GL_TEXTURE_2D,state);
}
}
static const GLubyte* s_renderer = 0;
static bool s_subloadAllGlyphsTogether = false;
if (!s_renderer)
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
s_renderer = glGetString(GL_RENDERER);
OSG_INFO<<"glGetString(GL_RENDERER)=="<<s_renderer<<std::endl;
if (s_renderer && strstr((const char*)s_renderer,"IMPACT")!=0)
{
// we're running on an Octane, so need to work around its
// subloading bugs by loading all at once.
s_subloadAllGlyphsTogether = true;
}
if (s_renderer &&
((strstr((const char*)s_renderer,"Radeon")!=0) ||
(strstr((const char*)s_renderer,"RADEON")!=0) ||
(strstr((const char*)s_renderer,"ALL-IN-WONDER")!=0)))
{
// we're running on an ATI, so need to work around its
// subloading bugs by loading all at once.
s_subloadAllGlyphsTogether = true;
}
if (s_renderer && strstr((const char*)s_renderer,"Sun")!=0)
{
// we're running on an solaris x server, so need to work around its
// subloading bugs by loading all at once.
s_subloadAllGlyphsTogether = true;
}
const char* str = getenv("OSG_TEXT_INCREMENTAL_SUBLOADING");
if (str)
{
s_subloadAllGlyphsTogether = strcmp(str,"OFF")==0 || strcmp(str,"Off")==0 || strcmp(str,"off")==0;
}
}
// now subload the glyphs that are outstanding for this graphics context.
GlyphPtrList& glyphsWereSubloading = _glyphsToSubload[contextID];
if (!glyphsWereSubloading.empty() || newTextureObject)
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
if (!s_subloadAllGlyphsTogether)
{
if (newTextureObject)
{
for(GlyphRefList::const_iterator itr=_glyphs.begin();
itr!=_glyphs.end();
++itr)
{
(*itr)->subload();
}
}
else // just subload the new entries.
{
// default way of subloading as required.
//std::cout<<"subloading"<<std::endl;
for(GlyphPtrList::iterator itr=glyphsWereSubloading.begin();
itr!=glyphsWereSubloading.end();
++itr)
{
(*itr)->subload();
}
}
// clear the list since we have now subloaded them.
glyphsWereSubloading.clear();
}
else
{
OSG_INFO<<"osgText::Font loading all glyphs as a single subload."<<std::endl;
// Octane has bugs in OGL driver which mean that subloads smaller
// than 32x32 produce errors, and also cannot handle general alignment,
// so to get round this copy all glyphs into a temporary image and
// then subload the whole lot in one go.
int tsize = getTextureHeight() * getTextureWidth();
unsigned char *local_data = new unsigned char[tsize];
memset( local_data, 0L, tsize);
for(GlyphRefList::const_iterator itr=_glyphs.begin();
itr!=_glyphs.end();
++itr)
{
//(*itr)->subload();
// Rather than subloading to graphics, we'll write the values
// of the glyphs into some intermediate data and subload the
// whole thing at the end
for( int t = 0; t < (*itr)->t(); t++ )
{
for( int s = 0; s < (*itr)->s(); s++ )
{
int sindex = (t*(*itr)->s()+s);
int dindex =
((((*itr)->getTexturePositionY()+t) * getTextureWidth()) +
((*itr)->getTexturePositionX()+s));
const unsigned char *sptr = &(*itr)->data()[sindex];
unsigned char *dptr = &local_data[dindex];
(*dptr) = (*sptr);
}
}
}
// clear the list since we have now subloaded them.
glyphsWereSubloading.clear();
// Subload the image once
glTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0,
getTextureWidth(),
getTextureHeight(),
GL_ALPHA, GL_UNSIGNED_BYTE, local_data );
delete [] local_data;
}
}
else
{
// OSG_INFO << "no need to subload "<<std::endl;
}
// if (generateMipMapTurnedOn)
// {
// glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_FALSE);
// }
}
void VertexArrayState::setArray(ArrayDispatch* vad, osg::State& state, const osg::Array* new_array)
{
if (new_array)
{
if (!vad->active)
{
vad->active = true;
_activeDispatchers.push_back(vad);
}
if (vad->array==0)
{
GLBufferObject* vbo = isVertexBufferObjectSupported() ? new_array->getOrCreateGLBufferObject(state.getContextID()) : 0;
if (vbo)
{
bindVertexBufferObject(vbo);
vad->enable_and_dispatch(state, new_array, vbo);
}
else
{
unbindVertexBufferObject();
vad->enable_and_dispatch(state, new_array);
}
}
else if (new_array!=vad->array || new_array->getModifiedCount()!=vad->modifiedCount)
{
GLBufferObject* vbo = isVertexBufferObjectSupported() ? new_array->getOrCreateGLBufferObject(state.getContextID()) : 0;
if (vbo)
{
bindVertexBufferObject(vbo);
vad->dispatch(state, new_array, vbo);
}
else
{
unbindVertexBufferObject();
vad->dispatch(state, new_array);
}
}
vad->array = new_array;
vad->modifiedCount = new_array->getModifiedCount();
}
else if (vad->array)
{
disable(vad, state);
}
}
void Shader::compileShader( osg::State& state ) const
{
PerContextShader* pcs = getPCS( state.getContextID() );
if( pcs ) pcs->compileShader( state );
}
void
SparseTexture2DArray::apply( osg::State& state ) const
{
// get the contextID (user defined ID of 0 upwards) for the
// current OpenGL context.
const unsigned int contextID = state.getContextID();
Texture::TextureObjectManager* tom = Texture::getTextureObjectManager(contextID).get();
//ElapsedTime elapsedTime(&(tom->getApplyTime()));
tom->getNumberApplied()++;
const Extensions* extensions = getExtensions(contextID,true);
// if not supported, then return
if (!extensions->isTexture2DArraySupported() || !extensions->isTexture3DSupported())
{
OSG_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 (textureObject && _textureDepth>0)
{
const osg::Image* image = firstValidImage();
if (image && getModifiedCount(0, contextID) != image->getModifiedCount())
{
// compute the internal texture format, this set the _internalFormat to an appropriate value.
computeInternalFormat();
GLsizei new_width, new_height, new_numMipmapLevels;
// compute the dimensions of the texture.
computeRequiredTextureDimensions(state, *image, new_width, new_height, new_numMipmapLevels);
if (!textureObject->match(GL_TEXTURE_2D_ARRAY_EXT, new_numMipmapLevels, _internalFormat, new_width, new_height, 1, _borderWidth))
{
Texture::releaseTextureObject(contextID, _textureObjectBuffer[contextID].get());
_textureObjectBuffer[contextID] = 0;
textureObject = 0;
}
}
}
// if we already have an texture object, then
if (textureObject)
{
// 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
// GW: this means we have to "dirty" an image before setting it!
if (image && getModifiedCount(n,contextID) != image->getModifiedCount())
{
applyTexImage2DArray_subload(state, image, _textureWidth, _textureHeight, n, _internalFormat, _numMipmapLevels);
getModifiedCount(n,contextID) = image->getModifiedCount();
}
}
}
}
// nothing before, but we have valid images, so do manual upload and create texture object manually
else if ( firstValidImage() != 0L ) // if (imagesValid())
{
// compute the internal texture format, this set the _internalFormat to an appropriate value.
computeInternalFormat();
// compute the dimensions of the texture.
osg::Image* firstImage = firstValidImage();
computeRequiredTextureDimensions(state, *firstImage, _textureWidth, _textureHeight, _numMipmapLevels);
// create texture object
textureObject = generateTextureObject(
this, contextID,GL_TEXTURE_2D_ARRAY_EXT,_numMipmapLevels,_internalFormat,_textureWidth,_textureHeight,_textureDepth,0);
// bind texture
textureObject->bind();
applyTexParameters(GL_TEXTURE_2D_ARRAY_EXT, state);
_textureObjectBuffer[contextID] = textureObject;
// First we need to allocate the texture memory
int sourceFormat = _sourceFormat ? _sourceFormat : _internalFormat;
if( isCompressedInternalFormat( sourceFormat ) &&
sourceFormat == _internalFormat &&
extensions->isCompressedTexImage3DSupported() )
{
extensions->glCompressedTexImage3D( GL_TEXTURE_2D_ARRAY_EXT, 0, _internalFormat,
_textureWidth, _textureHeight, _textureDepth, _borderWidth,
firstImage->getImageSizeInBytes() * _textureDepth,
0);
}
else
{
// Override compressed source format with safe GL_RGBA value which not generate error
// We can safely do this as source format is not important when source data is NULL
if( isCompressedInternalFormat( sourceFormat ) )
sourceFormat = GL_RGBA;
extensions->glTexImage3D( GL_TEXTURE_2D_ARRAY_EXT, 0, _internalFormat,
_textureWidth, _textureHeight, _textureDepth, _borderWidth,
sourceFormat, _sourceType ? _sourceType : GL_UNSIGNED_BYTE,
0);
}
// For certain we have to manually allocate memory for mipmaps if images are compressed
// if not allocated OpenGL will produce errors on mipmap upload.
// I have not tested if this is neccessary for plain texture formats but
// common sense suggests its required as well.
if( _min_filter != LINEAR && _min_filter != NEAREST && firstImage->isMipmap() )
allocateMipmap( state );
// 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();
}
}
const Texture::Extensions* texExtensions = Texture::getExtensions(contextID,true);
// source images have no mipmamps but we could generate them...
if( _min_filter != LINEAR && _min_filter != NEAREST && !firstImage->isMipmap() &&
_useHardwareMipMapGeneration && texExtensions->isGenerateMipMapSupported() )
{
_numMipmapLevels = osg::Image::computeNumberOfMipmapLevels( _textureWidth, _textureHeight );
generateMipmap( state );
}
textureObject->setAllocated(_numMipmapLevels,_internalFormat,_textureWidth,_textureHeight,_textureDepth,0);
// unref image data?
if (isSafeToUnrefImageData(state))
{
SparseTexture2DArray* non_const_this = const_cast<SparseTexture2DArray*>(this);
for (int n=0; n<_textureDepth; n++)
{
if (_images[n].valid() && _images[n]->getDataVariance()==STATIC)
{
non_const_this->_images[n] = NULL;
}
}
}
}
// 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(
this, 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);
}
}
// replaces the same func in the superclass
void
SparseTexture2DArray::applyTexImage2DArray_subload(osg::State& state, osg::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
OSG_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 )
{
OSG_WARN<<"Warning: Texture2DArray::applyTexImage2DArray_subload(..) given image do have wrong dimension or internal format."<<std::endl;
return;
}
glPixelStorei(GL_UNPACK_ALIGNMENT,image->getPacking());
bool useHardwareMipmapGeneration =
!image->isMipmap() && _useHardwareMipMapGeneration && texExtensions->isGenerateMipMapSupported();
// 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 )
{
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())
{
// OSG_WARN<<"glCompressedTexImage3D "<<inwidth<<", "<<inheight<<", "<<indepth<<std::endl;
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() )
{
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, indepth,
width, height, 1,
(GLenum)image->getPixelFormat(),
(GLenum)image->getDataType(),
image->getMipmapData(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, 1, blockSize,size);
// state.checkGLErrors("before extensions->glCompressedTexSubImage3D(");
extensions->glCompressedTexSubImage3D(target, k, 0, 0, indepth,
width, height, 1,
(GLenum)image->getPixelFormat(),
size,
image->getMipmapData(k));
// state.checkGLErrors("after extensions->glCompressedTexSubImage3D(");
width >>= 1;
height >>= 1;
}
}
}
void
MPGeometry::renderPrimitiveSets(osg::State& state,
bool usingVBOs) const
{
// check the map frame to see if it's up to date
if ( _frame.needsSync() )
{
// this lock protects a MapFrame sync when we have multiple DRAW threads.
Threading::ScopedMutexLock exclusive( _frameSyncMutex );
if ( _frame.needsSync() && _frame.sync() ) // always double check
{
// This should only happen is the layer ordering changes;
// If layers are added or removed, the Tile gets rebuilt and
// the point is moot.
std::vector<Layer> reordered;
const ImageLayerVector& layers = _frame.imageLayers();
reordered.reserve( layers.size() );
for( ImageLayerVector::const_iterator i = layers.begin(); i != layers.end(); ++i )
{
std::vector<Layer>::iterator j = std::find( _layers.begin(), _layers.end(), i->get()->getUID() );
if ( j != _layers.end() )
reordered.push_back( *j );
}
_layers.swap( reordered );
}
}
unsigned layersDrawn = 0;
// access the GL extensions interface for the current GC:
osg::ref_ptr<osg::GL2Extensions> ext = osg::GL2Extensions::Get( state.getContextID(), true );
const osg::Program::PerContextProgram* pcp = state.getLastAppliedProgramObject();
// cannot store these in the object since there could be multiple GCs (and multiple
// PerContextPrograms) at large
GLint tileKeyLocation;
GLint opacityLocation;
GLint uidLocation;
GLint orderLocation;
GLint texMatParentLocation;
// The PCP can change (especially in a VirtualProgram environment). So we do need to
// requery the uni locations each time unfortunately. TODO: explore optimizations.
if ( pcp )
{
tileKeyLocation = pcp->getUniformLocation( _tileKeyUniformNameID );
opacityLocation = pcp->getUniformLocation( _opacityUniformNameID );
uidLocation = pcp->getUniformLocation( _uidUniformNameID );
orderLocation = pcp->getUniformLocation( _orderUniformNameID );
texMatParentLocation = pcp->getUniformLocation( _texMatParentUniformNameID );
}
// apply the tilekey uniform once.
ext->glUniform4fv( tileKeyLocation, 1, _tileKeyValue.ptr() );
// activate the tile coordinate set - same for all layers
state.setTexCoordPointer( _imageUnit+1, _tileCoords.get() );
if ( _layers.size() > 0 )
{
float prev_opacity = -1.0f;
float prev_alphaThreshold = -1.0f;
// first bind any shared layers
// TODO: optimize by pre-storing shared indexes
for(unsigned i=0; i<_layers.size(); ++i)
{
const Layer& layer = _layers[i];
// a "shared" layer binds to a secondary texture unit so that other layers
// can see it and use it.
if ( layer._imageLayer->isShared() )
{
int sharedUnit = layer._imageLayer->shareImageUnit().get();
{
state.setActiveTextureUnit( sharedUnit );
state.setTexCoordPointer( sharedUnit, layer._texCoords.get() );
// bind the texture for this layer to the active share unit.
layer._tex->apply( state );
// no texture LOD blending for shared layers for now. maybe later.
}
}
}
// track the active image unit.
int activeImageUnit = -1;
// interate over all the image layers
//glDepthMask(GL_TRUE);
for(unsigned i=0; i<_layers.size(); ++i)
{
// if ( i > 0 )
// glDepthMask(GL_FALSE);
const Layer& layer = _layers[i];
if ( layer._imageLayer->getVisible() )
{
// activate the visible unit if necessary:
if ( activeImageUnit != _imageUnit )
{
state.setActiveTextureUnit( _imageUnit );
activeImageUnit = _imageUnit;
}
// bind the texture for this layer:
layer._tex->apply( state );
// if we're using a parent texture for blending, activate that now
if ( layer._texParent.valid() )
{
state.setActiveTextureUnit( _imageUnitParent );
activeImageUnit = _imageUnitParent;
layer._texParent->apply( state );
}
// bind the texture coordinates for this layer.
// TODO: can probably optimize this by sharing or using texture matrixes.
// State::setTexCoordPointer does some redundant work under the hood.
state.setTexCoordPointer( _imageUnit, layer._texCoords.get() );
// apply uniform values:
if ( pcp )
{
// apply opacity:
float opacity = layer._imageLayer->getOpacity();
if ( opacity != prev_opacity )
{
ext->glUniform1f( opacityLocation, (GLfloat)opacity );
prev_opacity = opacity;
}
// assign the layer UID:
ext->glUniform1i( uidLocation, (GLint)layer._layerID );
// assign the layer order:
ext->glUniform1i( orderLocation, (GLint)layersDrawn );
// assign the parent texture matrix
if ( layer._texParent.valid() )
{
ext->glUniformMatrix4fv( texMatParentLocation, 1, GL_FALSE, layer._texMatParent.ptr() );
}
}
// draw the primitive sets.
for(unsigned int primitiveSetNum=0; primitiveSetNum!=_primitives.size(); ++primitiveSetNum)
{
const osg::PrimitiveSet* primitiveset = _primitives[primitiveSetNum].get();
primitiveset->draw(state, usingVBOs);
}
++layersDrawn;
}
}
// prevent texture leakage
// TODO: find a way to remove this to speed things up
glBindTexture( GL_TEXTURE_2D, 0 );
}
// if we didn't draw anything, draw the raw tiles anyway with no texture.
if ( layersDrawn == 0 )
{
ext->glUniform1f( opacityLocation, (GLfloat)1.0f );
ext->glUniform1i( uidLocation, (GLint)-1 );
ext->glUniform1i( orderLocation, (GLint)0 );
// draw the primitives themselves.
for(unsigned int primitiveSetNum=0; primitiveSetNum!=_primitives.size(); ++primitiveSetNum)
{
const osg::PrimitiveSet* primitiveset = _primitives[primitiveSetNum].get();
primitiveset->draw(state, usingVBOs);
}
}
}
void
VirtualProgram::apply( osg::State& state ) const
{
if (_shaderMap.empty() && !_inheritSet)
{
// If there's no data in the VP, and never has been, unload any existing program.
// NOTE: OSG's State processor creates a "global default attribute" for each type.
// Sine we have no way of knowing whether the user created the VP or OSG created it
// as the default fallback, we use the "_inheritSet" flag to differeniate. This
// prevents any shader leakage from a VP-enabled node.
const unsigned int contextID = state.getContextID();
const osg::GL2Extensions* extensions = osg::GL2Extensions::Get(contextID,true);
if( ! extensions->isGlslSupported() ) return;
extensions->glUseProgram( 0 );
state.setLastAppliedProgramObject(0);
return;
}
// first, find and collect all the VirtualProgram attributes:
ShaderMap accumShaderMap;
AttribBindingList accumAttribBindings;
AttribAliasMap accumAttribAliases;
// Build the active shader map up to this point:
if ( _inherit )
{
accumulateShaders(state, _mask, accumShaderMap, accumAttribBindings, accumAttribAliases);
}
// next add the local shader components to the map, respecting the override values:
{
Threading::ScopedReadLock readonly(_dataModelMutex);
for( ShaderMap::const_iterator i = _shaderMap.begin(); i != _shaderMap.end(); ++i )
{
if ( i->second.accept(state) )
{
addToAccumulatedMap( accumShaderMap, i->first, i->second );
}
}
const AttribBindingList& abl = this->getAttribBindingList();
accumAttribBindings.insert( abl.begin(), abl.end() );
#ifdef USE_ATTRIB_ALIASES
const AttribAliasMap& aliases = this->getAttribAliases();
accumAttribAliases.insert( aliases.begin(), aliases.end() );
#endif
}
// next, assemble a list of the shaders in the map so we can use it as our
// program cache key.
// (Note: at present, the "cache key" does not include any information on the vertex
// attribute bindings. Technically it should, but in practice this might not be an
// issue; it is unlikely one would have two identical shader programs with different
// bindings.)
ShaderVector vec;
vec.reserve( accumShaderMap.size() );
for( ShaderMap::iterator i = accumShaderMap.begin(); i != accumShaderMap.end(); ++i )
{
ShaderEntry& entry = i->second;
if ( i->second.accept(state) )
{
vec.push_back( entry._shader.get() );
}
}
// see if there's already a program associated with this list:
osg::ref_ptr<osg::Program> program;
// look up the program:
{
Threading::ScopedReadLock shared( _programCacheMutex );
ProgramMap::const_iterator p = _programCache.find( vec );
if ( p != _programCache.end() )
{
program = p->second.get();
}
}
// if not found, lock and build it:
if ( !program.valid() )
{
// build a new set of accumulated functions, to support the creation of main()
ShaderComp::FunctionLocationMap accumFunctions;
accumulateFunctions( state, accumFunctions );
// now double-check the program cache, and failing that, build the
// new shader Program.
{
Threading::ScopedWriteLock exclusive( _programCacheMutex );
// double-check: look again ito negate race conditions
ProgramMap::const_iterator p = _programCache.find( vec );
if ( p != _programCache.end() )
{
program = p->second.get();
}
else
{
ShaderVector keyVector;
//OE_NOTICE << LC << "Building new Program for VP " << getName() << std::endl;
program = buildProgram(
getName(),
state,
accumFunctions,
accumShaderMap,
accumAttribBindings,
accumAttribAliases,
_template.get(),
keyVector);
// global sharing.
s_programRepo.share(program);
// finally, put own new program in the cache.
_programCache[ keyVector ] = program;
}
}
}
// finally, apply the program attribute.
if ( program.valid() )
{
const unsigned int contextID = state.getContextID();
const osg::GL2Extensions* extensions = osg::GL2Extensions::Get(contextID,true);
osg::Program::PerContextProgram* pcp = program->getPCP( contextID );
bool useProgram = state.getLastAppliedProgramObject() != pcp;
#ifdef DEBUG_APPLY_COUNTS
{
// debugging
static int s_framenum = 0;
static Threading::Mutex s_mutex;
static std::map< const VirtualProgram*, std::pair<int,int> > s_counts;
Threading::ScopedMutexLock lock(s_mutex);
int framenum = state.getFrameStamp()->getFrameNumber();
if ( framenum > s_framenum )
{
OE_NOTICE << LC << "Applies in last frame: " << std::endl;
for(std::map<const VirtualProgram*,std::pair<int,int> >::iterator i = s_counts.begin(); i != s_counts.end(); ++i)
{
std::pair<int,int>& counts = i->second;
OE_NOTICE << LC << " "
<< i->first->getName() << " : " << counts.second << "/" << counts.first << std::endl;
}
s_framenum = framenum;
s_counts.clear();
}
s_counts[this].first++;
if ( useProgram )
s_counts[this].second++;
}
#endif
if ( useProgram )
{
if( pcp->needsLink() )
program->compileGLObjects( state );
if( pcp->isLinked() )
{
if( osg::isNotifyEnabled(osg::INFO) )
pcp->validateProgram();
pcp->useProgram();
state.setLastAppliedProgramObject( pcp );
}
else
{
// program not usable, fallback to fixed function.
extensions->glUseProgram( 0 );
state.setLastAppliedProgramObject(0);
OE_WARN << LC << "Program link failure!" << std::endl;
}
}
//program->apply( state );
#if 0 // test code for detecting race conditions
for(int i=0; i<10000; ++i) {
state.setLastAppliedProgramObject(0L);
program->apply( state );
}
#endif
}
}
void
VirtualProgram::apply( osg::State& state ) const
{
if (_shaderMap.empty() && !_inheritSet)
{
// If there's no data in the VP, and never has been, unload any existing program.
// NOTE: OSG's State processor creates a "global default attribute" for each type.
// Sine we have no way of knowing whether the user created the VP or OSG created it
// as the default fallback, we use the "_inheritSet" flag to differeniate. This
// prevents any shader leakage from a VP-enabled node.
const unsigned int contextID = state.getContextID();
const osg::GL2Extensions* extensions = osg::GL2Extensions::Get(contextID,true);
if( ! extensions->isGlslSupported() ) return;
extensions->glUseProgram( 0 );
state.setLastAppliedProgramObject(0);
return;
}
// first, find and collect all the VirtualProgram attributes:
ShaderMap accumShaderMap;
AttribBindingList accumAttribBindings;
AttribAliasMap accumAttribAliases;
if ( _inherit )
{
const StateHack::AttributeVec* av = StateHack::GetAttributeVec( state, this );
if ( av && av->size() > 0 )
{
// find the deepest VP that doesn't inherit:
unsigned start = 0;
for( start = (int)av->size()-1; start > 0; --start )
{
const VirtualProgram* vp = dynamic_cast<const VirtualProgram*>( (*av)[start].first );
if ( vp && (vp->_mask & _mask) && vp->_inherit == false )
break;
}
// collect shaders from there to here:
for( unsigned i=start; i<av->size(); ++i )
{
const VirtualProgram* vp = dynamic_cast<const VirtualProgram*>( (*av)[i].first );
if ( vp && (vp->_mask && _mask) )
{
ShaderMap vpShaderMap;
vp->getShaderMap( vpShaderMap );
for( ShaderMap::const_iterator i = vpShaderMap.begin(); i != vpShaderMap.end(); ++i )
{
addToAccumulatedMap( accumShaderMap, i->first, i->second );
}
const AttribBindingList& abl = vp->getAttribBindingList();
accumAttribBindings.insert( abl.begin(), abl.end() );
#ifdef USE_ATTRIB_ALIASES
const AttribAliasMap& aliases = vp->getAttribAliases();
accumAttribAliases.insert( aliases.begin(), aliases.end() );
#endif
}
}
}
}
// next add the local shader components to the map, respecting the override values:
{
Threading::ScopedReadLock readonly(_dataModelMutex);
for( ShaderMap::const_iterator i = _shaderMap.begin(); i != _shaderMap.end(); ++i )
{
addToAccumulatedMap( accumShaderMap, i->first, i->second );
}
const AttribBindingList& abl = this->getAttribBindingList();
accumAttribBindings.insert( abl.begin(), abl.end() );
#ifdef USE_ATTRIB_ALIASES
const AttribAliasMap& aliases = this->getAttribAliases();
accumAttribAliases.insert( aliases.begin(), aliases.end() );
#endif
}
if ( true ) //even with nothing in the map, we still want mains! -gw //accumShaderMap.size() )
{
// next, assemble a list of the shaders in the map so we can use it as our
// program cache key.
// (Note: at present, the "cache key" does not include any information on the vertex
// attribute bindings. Technically it should, but in practice this might not be an
// issue; it is unlikely one would have two identical shader programs with different
// bindings.)
ShaderVector vec;
vec.reserve( accumShaderMap.size() );
for( ShaderMap::iterator i = accumShaderMap.begin(); i != accumShaderMap.end(); ++i )
{
ShaderEntry& entry = i->second;
vec.push_back( entry.first.get() );
}
// see if there's already a program associated with this list:
osg::ref_ptr<osg::Program> program;
// look up the program:
{
Threading::ScopedReadLock shared( _programCacheMutex );
ProgramMap::const_iterator p = _programCache.find( vec );
if ( p != _programCache.end() )
{
program = p->second.get();
}
}
// if not found, lock and build it:
if ( !program.valid() )
{
// build a new set of accumulated functions, to support the creation of main()
ShaderComp::FunctionLocationMap accumFunctions;
accumulateFunctions( state, accumFunctions );
// now double-check the program cache, and failing that, build the
// new shader Program.
{
Threading::ScopedWriteLock exclusive( _programCacheMutex );
// double-check: look again ito negate race conditions
ProgramMap::const_iterator p = _programCache.find( vec );
if ( p != _programCache.end() )
{
program = p->second.get();
}
else
{
ShaderVector keyVector;
//OE_NOTICE << LC << "Building new Program for VP " << getName() << std::endl;
program = buildProgram(
getName(),
state,
accumFunctions,
accumShaderMap,
accumAttribBindings,
accumAttribAliases,
_template.get(),
keyVector);
// finally, put own new program in the cache.
_programCache[ keyVector ] = program;
}
}
}
// finally, apply the program attribute.
if ( program.valid() )
{
program->apply( state );
#if 0 // test code for detecting race conditions
for(int i=0; i<10000; ++i) {
state.setLastAppliedProgramObject(0L);
program->apply( state );
}
#endif
}
}
}
void
DepthPeelBin::PerContextInfo::init( const osg::State& state, const GLsizei width, const GLsizei height )
{
TRACEDUMP("PerContextInfo::init");
_width = width;
_height = height;
// Create two depth buffers; First two are ping-pong buffers for each pass.
// The third is the persistent depth buffer from the opaque pass.
glGenTextures( 3, _depthTex );
UTIL_GL_ERROR_CHECK( "DepthPeelBin PerContext Depth Tex" );
int idx;
for( idx=0; idx<3; idx++ )
{
glBindTexture( GL_TEXTURE_2D, _depthTex[ idx ] );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_DEPTH_TEXTURE_MODE_ARB, GL_ALPHA );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC_ARB, GL_LEQUAL ); // Alpha == 1.0 if R [func] texel.
glTexImage2D( GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, _width, _height,
0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL );
}
glGenTextures( 1, &_colorTex );
UTIL_GL_ERROR_CHECK( "DepthPeelBin PerContextInfo Color Tex" );
glBindTexture( GL_TEXTURE_2D, _colorTex );
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, _width, _height,
0, GL_RGBA, GL_UNSIGNED_BYTE, NULL );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
glBindTexture( GL_TEXTURE_2D, 0 );
osg::FBOExtensions* fboExt( osg::FBOExtensions::instance( state.getContextID(), true ) );
osgwTools::glGenFramebuffers( fboExt, 1, &_fbo );
osgwTools::glBindFramebuffer( fboExt, GL_FRAMEBUFFER_EXT, _fbo );
osgwTools::glFramebufferTexture2D( fboExt, GL_DRAW_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, _colorTex, 0 );
UTIL_GL_ERROR_CHECK( "DepthPeenBin PerContextInfo" );
osg::setGLExtensionFuncPtr( _glGenQueries, "glGenQueries", "glGenQueriesARB");
osg::setGLExtensionFuncPtr( _glDeleteQueries, "glDeleteQueries", "glDeleteQueriesARB");
osg::setGLExtensionFuncPtr( _glBeginQuery, "glBeginQuery", "glBeginQueryARB");
osg::setGLExtensionFuncPtr( _glEndQuery, "glEndQuery", "glEndQueryARB");
osg::setGLExtensionFuncPtr( _glGetQueryObjectiv, "glGetQueryObjectiv","glGetQueryObjectivARB");
osg::setGLExtensionFuncPtr( _glGetFramebufferAttachmentParameteriv, "glGetFramebufferAttachmentParameteriv","glGetFramebufferAttachmentParameterivEXT");
_glGenQueries( 1, &_queryID );
UTIL_GL_ERROR_CHECK( "DepthPeelBin PerContextInfo end" );
UTIL_GL_FBO_ERROR_CHECK( "DepthPeelBin PerContextInfo end", fboExt );
_init = true;
}
void
MPGeometry::renderPrimitiveSets(osg::State& state,
bool usingVBOs) const
{
// check the map frame to see if it's up to date
if ( _frame.needsSync() )
{
// this lock protects a MapFrame sync when we have multiple DRAW threads.
Threading::ScopedMutexLock exclusive( _frameSyncMutex );
if ( _frame.needsSync() && _frame.sync() ) // always double check
{
// This should only happen is the layer ordering changes;
// If layers are added or removed, the Tile gets rebuilt and
// the point is moot.
std::vector<Layer> reordered;
const ImageLayerVector& layers = _frame.imageLayers();
reordered.reserve( layers.size() );
for( ImageLayerVector::const_iterator i = layers.begin(); i != layers.end(); ++i )
{
std::vector<Layer>::iterator j = std::find( _layers.begin(), _layers.end(), i->get()->getUID() );
if ( j != _layers.end() )
reordered.push_back( *j );
}
_layers.swap( reordered );
}
}
unsigned layersDrawn = 0;
osg::ref_ptr<osg::GL2Extensions> ext = osg::GL2Extensions::Get( state.getContextID(), true );
const osg::Program::PerContextProgram* pcp = state.getLastAppliedProgramObject();
GLint opacityLocation;
GLint uidLocation;
GLint orderLocation;
GLint texMatParentLocation;
// yes, it's possible that the PCP is not set up yet.
// TODO: can we optimize this so we don't need to get uni locations every time?
if ( pcp )
{
opacityLocation = pcp->getUniformLocation( _opacityUniform->getNameID() );
uidLocation = pcp->getUniformLocation( _layerUIDUniform->getNameID() );
orderLocation = pcp->getUniformLocation( _layerOrderUniform->getNameID() );
texMatParentLocation = pcp->getUniformLocation( _texMatParentUniform->getNameID() );
}
// activate the tile coordinate set - same for all layers
state.setTexCoordPointer( _imageUnit+1, _tileCoords.get() );
if ( _layers.size() > 0 )
{
float prev_opacity = -1.0f;
float prev_alphaThreshold = -1.0f;
// first bind any shared layers
// TODO: optimize by pre-storing shared indexes
for(unsigned i=0; i<_layers.size(); ++i)
{
const Layer& layer = _layers[i];
// a "shared" layer binds to a secondary texture unit so that other layers
// can see it and use it.
if ( layer._imageLayer->isShared() )
{
int sharedUnit = layer._imageLayer->shareImageUnit().get();
{
state.setActiveTextureUnit( sharedUnit );
state.setTexCoordPointer( sharedUnit, layer._texCoords.get() );
// bind the texture for this layer to the active share unit.
layer._tex->apply( state );
// no texture LOD blending for shared layers for now. maybe later.
}
}
}
// track the active image unit.
int activeImageUnit = -1;
// interate over all the image layers
for(unsigned i=0; i<_layers.size(); ++i)
{
const Layer& layer = _layers[i];
if ( layer._imageLayer->getVisible() )
{
// activate the visible unit if necessary:
if ( activeImageUnit != _imageUnit )
{
state.setActiveTextureUnit( _imageUnit );
activeImageUnit = _imageUnit;
}
// bind the texture for this layer:
layer._tex->apply( state );
// if we're using a parent texture for blending, activate that now
if ( layer._texParent.valid() )
{
state.setActiveTextureUnit( _imageUnitParent );
activeImageUnit = _imageUnitParent;
layer._texParent->apply( state );
}
// bind the texture coordinates for this layer.
// TODO: can probably optimize this by sharing or using texture matrixes.
// State::setTexCoordPointer does some redundant work under the hood.
state.setTexCoordPointer( _imageUnit, layer._texCoords.get() );
// apply uniform values:
if ( pcp )
{
// apply opacity:
float opacity = layer._imageLayer->getOpacity();
if ( opacity != prev_opacity )
{
_opacityUniform->set( opacity );
_opacityUniform->apply( ext, opacityLocation );
prev_opacity = opacity;
}
// assign the layer UID:
_layerUIDUniform->set( layer._layerID );
_layerUIDUniform->apply( ext, uidLocation );
// assign the layer order:
_layerOrderUniform->set( (int)layersDrawn );
_layerOrderUniform->apply( ext, orderLocation );
// assign the parent texture matrix
if ( layer._texParent.valid() )
{
_texMatParentUniform->set( layer._texMatParent );
_texMatParentUniform->apply( ext, texMatParentLocation );
}
}
// draw the primitive sets.
for(unsigned int primitiveSetNum=0; primitiveSetNum!=_primitives.size(); ++primitiveSetNum)
{
const osg::PrimitiveSet* primitiveset = _primitives[primitiveSetNum].get();
primitiveset->draw(state, usingVBOs);
}
++layersDrawn;
}
}
// prevent texture leakage
glBindTexture( GL_TEXTURE_2D, 0 );
}
// if we didn't draw anything, draw the raw tiles anyway with no texture.
if ( layersDrawn == 0 )
{
_opacityUniform->set( 1.0f );
_opacityUniform->apply( ext, opacityLocation );
_layerUIDUniform->set( (int)-1 ); // indicates a non-textured layer
_layerUIDUniform->apply( ext, uidLocation );
_layerOrderUniform->set( (int)0 );
_layerOrderUniform->apply( ext, orderLocation );
// draw the primitives themselves.
for(unsigned int primitiveSetNum=0; primitiveSetNum!=_primitives.size(); ++primitiveSetNum)
{
const osg::PrimitiveSet* primitiveset = _primitives[primitiveSetNum].get();
primitiveset->draw(state, usingVBOs);
}
}
}
void
MPGeometry::renderPrimitiveSets(osg::State& state,
bool renderColor,
bool usingVBOs) const
{
// check the map frame to see if it's up to date
if ( _frame.needsSync() )
{
// this lock protects a MapFrame sync when we have multiple DRAW threads.
Threading::ScopedMutexLock exclusive( _frameSyncMutex );
if ( _frame.needsSync() && _frame.sync() ) // always double check
{
// This should only happen is the layer ordering changes;
// If layers are added or removed, the Tile gets rebuilt and
// the point is moot.
std::vector<Layer> reordered;
const ImageLayerVector& layers = _frame.imageLayers();
reordered.reserve( layers.size() );
for( ImageLayerVector::const_iterator i = layers.begin(); i != layers.end(); ++i )
{
std::vector<Layer>::iterator j = std::find( _layers.begin(), _layers.end(), i->get()->getUID() );
if ( j != _layers.end() )
reordered.push_back( *j );
}
_layers.swap( reordered );
}
}
unsigned layersDrawn = 0;
// access the GL extensions interface for the current GC:
const osg::Program::PerContextProgram* pcp = 0L;
#if OSG_MIN_VERSION_REQUIRED(3,3,3)
osg::ref_ptr<osg::GLExtensions> ext;
#else
osg::ref_ptr<osg::GL2Extensions> ext;
#endif
unsigned contextID;
if (_supportsGLSL)
{
contextID = state.getContextID();
#if OSG_MIN_VERSION_REQUIRED(3,3,3)
ext = osg::GLExtensions::Get(contextID, true);
#else
ext = osg::GL2Extensions::Get( contextID, true );
#endif
pcp = state.getLastAppliedProgramObject();
}
// cannot store these in the object since there could be multiple GCs (and multiple
// PerContextPrograms) at large
GLint tileKeyLocation = -1;
GLint birthTimeLocation = -1;
GLint opacityLocation = -1;
GLint uidLocation = -1;
GLint orderLocation = -1;
GLint texMatParentLocation = -1;
GLint minRangeLocation = -1;
GLint maxRangeLocation = -1;
// The PCP can change (especially in a VirtualProgram environment). So we do need to
// requery the uni locations each time unfortunately. TODO: explore optimizations.
if ( pcp )
{
tileKeyLocation = pcp->getUniformLocation( _tileKeyUniformNameID );
birthTimeLocation = pcp->getUniformLocation( _birthTimeUniformNameID );
opacityLocation = pcp->getUniformLocation( _opacityUniformNameID );
uidLocation = pcp->getUniformLocation( _uidUniformNameID );
orderLocation = pcp->getUniformLocation( _orderUniformNameID );
texMatParentLocation = pcp->getUniformLocation( _texMatParentUniformNameID );
minRangeLocation = pcp->getUniformLocation( _minRangeUniformNameID );
maxRangeLocation = pcp->getUniformLocation( _maxRangeUniformNameID );
}
// apply the tilekey uniform once.
if ( tileKeyLocation >= 0 )
{
ext->glUniform4fv( tileKeyLocation, 1, _tileKeyValue.ptr() );
}
// set the "birth time" - i.e. the time this tile last entered the scene in the current GC.
if ( birthTimeLocation >= 0 )
{
PerContextData& pcd = _pcd[contextID];
if ( pcd.birthTime < 0.0f )
{
const osg::FrameStamp* stamp = state.getFrameStamp();
if ( stamp )
{
pcd.birthTime = stamp->getReferenceTime();
}
}
ext->glUniform1f( birthTimeLocation, pcd.birthTime );
}
// activate the tile coordinate set - same for all layers
if ( renderColor )
{
state.setTexCoordPointer( _imageUnit+1, _tileCoords.get() );
}
#ifndef OSG_GLES2_AVAILABLE
if ( renderColor )
{
// emit a default terrain color since we're not binding a color array:
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
}
#endif
// activate the elevation texture if there is one. Same for all layers.
//if ( _elevTex.valid() )
//{
// state.setActiveTextureUnit( 2 );
// state.setTexCoordPointer( 1, _tileCoords.get() ); // necessary?? since we do it above
// _elevTex->apply( state );
// // todo: probably need an elev texture matrix as well. -gw
//}
// track the active image unit.
int activeImageUnit = -1;
// remember whether we applied a parent texture.
bool usedTexParent = false;
if ( _layers.size() > 0 )
{
float prev_opacity = -1.0f;
// first bind any shared layers. We still have to do this even if we are
// in !renderColor mode b/c these textures could be used by vertex shaders
// to alter the geometry.
int sharedLayers = 0;
if ( pcp )
{
for(unsigned i=0; i<_layers.size(); ++i)
{
const Layer& layer = _layers[i];
// a "shared" layer binds to a secondary texture unit so that other layers
// can see it and use it.
if ( layer._imageLayer->isShared() )
{
++sharedLayers;
int sharedUnit = layer._imageLayer->shareImageUnit().get();
{
state.setActiveTextureUnit( sharedUnit );
state.setTexCoordPointer( sharedUnit, layer._texCoords.get() );
// bind the texture for this layer to the active share unit.
layer._tex->apply( state );
// Shared layers need a texture matrix since the terrain engine doesn't
// provide a "current texture coordinate set" uniform (i.e. oe_layer_texc)
GLint texMatLocation = 0;
texMatLocation = pcp->getUniformLocation( layer._texMatUniformID );
if ( texMatLocation >= 0 )
{
ext->glUniformMatrix4fv( texMatLocation, 1, GL_FALSE, layer._texMat.ptr() );
}
}
}
}
}
if (renderColor)
{
// find the first opaque layer, top-down, and start there:
unsigned first = 0;
for(first = _layers.size()-1; first > 0; --first)
{
const Layer& layer = _layers[first];
if (layer._opaque &&
//Color filters can modify the opacity
layer._imageLayer->getColorFilters().empty() &&
layer._imageLayer->getVisible() &&
layer._imageLayer->getOpacity() >= 1.0f)
{
break;
}
}
// interate over all the image layers
for(unsigned i=first; i<_layers.size(); ++i)
{
const Layer& layer = _layers[i];
if ( layer._imageLayer->getVisible() && layer._imageLayer->getOpacity() > 0.0f )
{
// activate the visible unit if necessary:
if ( activeImageUnit != _imageUnit )
{
state.setActiveTextureUnit( _imageUnit );
activeImageUnit = _imageUnit;
}
// bind the texture for this layer:
layer._tex->apply( state );
// in FFP mode, we need to enable the GL mode for texturing:
if ( !pcp ) //!_supportsGLSL)
{
state.applyMode(GL_TEXTURE_2D, true);
}
// if we're using a parent texture for blending, activate that now
if ( texMatParentLocation >= 0 && layer._texParent.valid() )
{
state.setActiveTextureUnit( _imageUnitParent );
activeImageUnit = _imageUnitParent;
layer._texParent->apply( state );
usedTexParent = true;
}
// bind the texture coordinates for this layer.
// TODO: can probably optimize this by sharing or using texture matrixes.
// State::setTexCoordPointer does some redundant work under the hood.
state.setTexCoordPointer( _imageUnit, layer._texCoords.get() );
// apply uniform values:
if ( pcp )
{
// apply opacity:
if ( opacityLocation >= 0 )
{
float opacity = layer._imageLayer->getOpacity();
if ( opacity != prev_opacity )
{
ext->glUniform1f( opacityLocation, (GLfloat)opacity );
prev_opacity = opacity;
}
}
// assign the layer UID:
if ( uidLocation >= 0 )
{
ext->glUniform1i( uidLocation, (GLint)layer._layerID );
}
// assign the layer order:
if ( orderLocation >= 0 )
{
ext->glUniform1i( orderLocation, (GLint)layersDrawn );
}
// assign the parent texture matrix
if ( texMatParentLocation >= 0 && layer._texParent.valid() )
{
ext->glUniformMatrix4fv( texMatParentLocation, 1, GL_FALSE, layer._texMatParent.ptr() );
}
// assign the min range
if ( minRangeLocation >= 0 )
{
ext->glUniform1f( minRangeLocation, layer._imageLayer->getImageLayerOptions().minVisibleRange().get() );
}
// assign the max range
if ( maxRangeLocation >= 0 )
{
ext->glUniform1f( maxRangeLocation, layer._imageLayer->getImageLayerOptions().maxVisibleRange().get() );
}
}
// draw the primitive sets.
for(unsigned int primitiveSetNum=0; primitiveSetNum!=_primitives.size(); ++primitiveSetNum)
{
const osg::PrimitiveSet* primitiveset = _primitives[primitiveSetNum].get();
if ( primitiveset )
{
primitiveset->draw(state, usingVBOs);
}
else
{
OE_WARN << LC << "Strange, MPGeometry had a 0L primset" << std::endl;
}
}
++layersDrawn;
}
}
}
}
// if we didn't draw anything, draw the raw tiles anyway with no texture.
if ( layersDrawn == 0 )
{
if ( pcp )
{
if ( opacityLocation >= 0 )
ext->glUniform1f( opacityLocation, (GLfloat)1.0f );
if ( uidLocation >= 0 )
ext->glUniform1i( uidLocation, (GLint)-1 );
if ( orderLocation >= 0 )
ext->glUniform1i( orderLocation, (GLint)0 );
}
// draw the primitives themselves.
for(unsigned int primitiveSetNum=0; primitiveSetNum!=_primitives.size(); ++primitiveSetNum)
{
const osg::PrimitiveSet* primitiveset = _primitives[primitiveSetNum].get();
primitiveset->draw(state, usingVBOs);
}
}
else // at least one textured layer was drawn:
{
// prevent texture leakage
// TODO: find a way to remove this to speed things up
if ( renderColor )
{
glBindTexture( GL_TEXTURE_2D, 0 );
// if a parent texture was applied, need to disable both.
if ( usedTexParent )
{
state.setActiveTextureUnit(
activeImageUnit != _imageUnitParent ? _imageUnitParent :
_imageUnit );
glBindTexture( GL_TEXTURE_2D, 0);
}
}
}
}
void
VirtualProgram::apply( osg::State& state ) const
{
if (_shaderMap.empty() && !_inheritSet)
{
// If there's no data in the VP, and never has been, unload any existing program.
// NOTE: OSG's State processor creates a "global default attribute" for each type.
// Sine we have no way of knowing whether the user created the VP or OSG created it
// as the default fallback, we use the "_inheritSet" flag to differeniate. This
// prevents any shader leakage from a VP-enabled node.
const unsigned int contextID = state.getContextID();
const osg::GL2Extensions* extensions = osg::GL2Extensions::Get(contextID,true);
if( ! extensions->isGlslSupported() ) return;
extensions->glUseProgram( 0 );
state.setLastAppliedProgramObject(0);
return;
}
// first, find and collect all the VirtualProgram attributes:
ShaderMap accumShaderMap;
AttribBindingList accumAttribBindings;
AttribAliasMap accumAttribAliases;
if ( _inherit )
{
const StateHack::AttributeVec* av = StateHack::GetAttributeVec( state, this );
if ( av && av->size() > 0 )
{
// find the deepest VP that doesn't inherit:
unsigned start = 0;
for( start = (int)av->size()-1; start > 0; --start )
{
const VirtualProgram* vp = dynamic_cast<const VirtualProgram*>( (*av)[start].first );
if ( vp && (vp->_mask & _mask) && vp->_inherit == false )
break;
}
// collect shaders from there to here:
for( unsigned i=start; i<av->size(); ++i )
{
const VirtualProgram* vp = dynamic_cast<const VirtualProgram*>( (*av)[i].first );
if ( vp && (vp->_mask && _mask) )
{
for( ShaderMap::const_iterator i = vp->_shaderMap.begin(); i != vp->_shaderMap.end(); ++i )
{
addToAccumulatedMap( accumShaderMap, i->first, i->second );
}
const AttribBindingList& abl = vp->getAttribBindingList();
accumAttribBindings.insert( abl.begin(), abl.end() );
const AttribAliasMap& aliases = vp->getAttribAliases();
accumAttribAliases.insert( aliases.begin(), aliases.end() );
}
}
}
}
// next add the local shader components to the map, respecting the override values:
for( ShaderMap::const_iterator i = _shaderMap.begin(); i != _shaderMap.end(); ++i )
{
addToAccumulatedMap( accumShaderMap, i->first, i->second );
}
const AttribBindingList& abl = this->getAttribBindingList();
accumAttribBindings.insert( abl.begin(), abl.end() );
const AttribAliasMap& aliases = this->getAttribAliases();
accumAttribAliases.insert( aliases.begin(), aliases.end() );
if ( true ) //even with nothing in the map, we still want mains! -gw //accumShaderMap.size() )
{
// next, assemble a list of the shaders in the map so we can use it as our
// program cache key.
// (Note: at present, the "cache key" does not include any information on the vertex
// attribute bindings. Technically it should, but in practice this might not be an
// issue; it is unlikely one would have two identical shader programs with different
// bindings.)
ShaderVector vec;
vec.reserve( accumShaderMap.size() );
for( ShaderMap::iterator i = accumShaderMap.begin(); i != accumShaderMap.end(); ++i )
{
ShaderEntry& entry = i->second;
vec.push_back( entry.first.get() );
}
// see if there's already a program associated with this list:
osg::Program* program = 0L;
// look up the program:
{
Threading::ScopedReadLock shared( _programCacheMutex );
ProgramMap::const_iterator p = _programCache.find( vec );
if ( p != _programCache.end() )
{
program = p->second.get();
}
}
// if not found, lock and build it:
if ( !program )
{
Threading::ScopedWriteLock exclusive( _programCacheMutex );
// look again in case of contention:
ProgramMap::const_iterator p = _programCache.find( vec );
if ( p != _programCache.end() )
{
program = p->second.get();
}
else
{
VirtualProgram* nc = const_cast<VirtualProgram*>(this);
program = nc->buildProgram( state, accumShaderMap, accumAttribBindings, accumAttribAliases);
}
}
// finally, apply the program attribute.
program->apply( state );
}
}