In the attached file I have added support for #extension in shaders, GLSL
requires definitions to happen after the optional #extension.
Also what is the currently preferred method of submitting code? I have some
code that adds support for uint64+int64 uniform types + an example that uses
bindless textures.
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=69957#69957
/* -*-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/State>
#include <osg/Texture>
#include <osg/Notify>
#include <osg/GLU>
#include <osg/GLExtensions>
#include <osg/Drawable>
#include <osg/ApplicationUsage>
#include <osg/ContextData>
#include <sstream>
#include <algorithm>
#ifndef GL_MAX_TEXTURE_COORDS
#define GL_MAX_TEXTURE_COORDS 0x8871
#endif
#ifndef GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS
#define GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D
#endif
#ifndef GL_MAX_TEXTURE_UNITS
#define GL_MAX_TEXTURE_UNITS 0x84E2
#endif
using namespace std;
using namespace osg;
static ApplicationUsageProxy
State_e0(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_GL_ERROR_CHECKING
<type>","ONCE_PER_ATTRIBUTE | ON | on enables fine grained checking,
ONCE_PER_FRAME enables coarse grained checking");
State::State():
Referenced(true)
{
_graphicsContext = 0;
_contextID = 0;
_shaderCompositionEnabled = false;
_shaderCompositionDirty = true;
_shaderComposer = new ShaderComposer;
_currentShaderCompositionProgram = 0L;
_identity = new osg::RefMatrix(); // default RefMatrix constructs to
identity.
_initialViewMatrix = _identity;
_projection = _identity;
_modelView = _identity;
_modelViewCache = new osg::RefMatrix;
#if !defined(OSG_GL_FIXED_FUNCTION_AVAILABLE)
_useModelViewAndProjectionUniforms = true;
_useVertexAttributeAliasing = true;
#else
_useModelViewAndProjectionUniforms = false;
_useVertexAttributeAliasing = false;
#endif
_modelViewMatrixUniform = new
Uniform(Uniform::FLOAT_MAT4,"osg_ModelViewMatrix");
_projectionMatrixUniform = new
Uniform(Uniform::FLOAT_MAT4,"osg_ProjectionMatrix");
_modelViewProjectionMatrixUniform = new
Uniform(Uniform::FLOAT_MAT4,"osg_ModelViewProjectionMatrix");
_normalMatrixUniform = new Uniform(Uniform::FLOAT_MAT3,"osg_NormalMatrix");
resetVertexAttributeAlias();
_abortRenderingPtr = NULL;
_checkGLErrors = ONCE_PER_FRAME;
const char* str = getenv("OSG_GL_ERROR_CHECKING");
if (str && (strcmp(str,"ONCE_PER_ATTRIBUTE")==0 || strcmp(str,"ON")==0 ||
strcmp(str,"on")==0))
{
_checkGLErrors = ONCE_PER_ATTRIBUTE;
}
else if(str && (strcmp(str, "OFF") == 0 || strcmp(str, "off") == 0))
{
_checkGLErrors = NEVER_CHECK_GL_ERRORS;
}
_currentActiveTextureUnit=0;
_currentClientActiveTextureUnit=0;
_currentPBO = 0;
_isSecondaryColorSupported = false;
_isFogCoordSupported = false;
_isVertexBufferObjectSupported = false;
_isVertexArrayObjectSupported = false;
_forceVertexBufferObject = false;
_forceVertexArrayObject = false;
_lastAppliedProgramObject = 0;
_extensionProcsInitialized = false;
_glClientActiveTexture = 0;
_glActiveTexture = 0;
_glFogCoordPointer = 0;
_glSecondaryColorPointer = 0;
_glVertexAttribPointer = 0;
_glVertexAttribIPointer = 0;
_glVertexAttribLPointer = 0;
_glEnableVertexAttribArray = 0;
_glDisableVertexAttribArray = 0;
_glDrawArraysInstanced = 0;
_glDrawElementsInstanced = 0;
_glMultiTexCoord4f = 0;
_glVertexAttrib4fv = 0;
_glVertexAttrib4f = 0;
_glBindBuffer = 0;
_dynamicObjectCount = 0;
_glMaxTextureCoords = 1;
_glMaxTextureUnits = 1;
_maxTexturePoolSize = 0;
_maxBufferObjectPoolSize = 0;
_arrayDispatchers.setState(this);
_graphicsCostEstimator = new GraphicsCostEstimator;
_startTick = 0;
_gpuTick = 0;
_gpuTimestamp = 0;
_timestampBits = 0;
_vas = 0;
}
State::~State()
{
// delete the GLExtensions object associated with this osg::State.
if (_glExtensions)
{
GLExtensions::Set(_contextID, 0);
_glExtensions = 0;
}
//_texCoordArrayList.clear();
//_vertexAttribArrayList.clear();
}
void State::initializeExtensionProcs()
{
if (_extensionProcsInitialized) return;
const char* vendor = (const char*) glGetString( GL_VENDOR );
if (vendor)
{
std::string str_vendor(vendor);
std::replace(str_vendor.begin(), str_vendor.end(), ' ', '_');
OSG_INFO<<"GL_VENDOR = ["<<str_vendor<<"]"<<std::endl;
_defineMap.map[str_vendor].defineVec.push_back(osg::StateSet::DefinePair("1",osg::StateAttribute::ON));
_defineMap.map[str_vendor].changed = true;
_defineMap.changed = true;
}
_glExtensions = new GLExtensions(_contextID);
GLExtensions::Set(_contextID, _glExtensions.get());
_isSecondaryColorSupported =
osg::isGLExtensionSupported(_contextID,"GL_EXT_secondary_color");
_isFogCoordSupported =
osg::isGLExtensionSupported(_contextID,"GL_EXT_fog_coord");
_isVertexBufferObjectSupported = OSG_GLES2_FEATURES || OSG_GL3_FEATURES ||
osg::isGLExtensionSupported(_contextID,"GL_ARB_vertex_buffer_object");
_isVertexArrayObjectSupported = _glExtensions->isVAOSupported;
const DisplaySettings* ds = getDisplaySettings() ? getDisplaySettings() :
osg::DisplaySettings::instance().get();
_forceVertexArrayObject = _isVertexArrayObjectSupported &&
(ds->getVertexBufferHint()==DisplaySettings::VERTEX_ARRAY_OBJECT);
_forceVertexBufferObject = _forceVertexArrayObject ||
(_isVertexBufferObjectSupported &&
(ds->getVertexBufferHint()==DisplaySettings::VERTEX_BUFFER_OBJECT));
OSG_NOTICE<<"_forceVertexArrayObject =
"<<_forceVertexArrayObject<<std::endl;
OSG_NOTICE<<"_forceVertexBufferObject =
"<<_forceVertexBufferObject<<std::endl;
// Set up up global VertexArrayState object
_globalVertexArrayState = new VertexArrayState(this);
_globalVertexArrayState->assignAllDispatchers();
// if (_useVertexArrayObject)
_globalVertexArrayState->generateVertexArrayObject();
setCurrentToGloabalVertexArrayState();
setGLExtensionFuncPtr(_glClientActiveTexture,"glClientActiveTexture","glClientActiveTextureARB");
setGLExtensionFuncPtr(_glActiveTexture,
"glActiveTexture","glActiveTextureARB");
setGLExtensionFuncPtr(_glFogCoordPointer,
"glFogCoordPointer","glFogCoordPointerEXT");
setGLExtensionFuncPtr(_glSecondaryColorPointer,
"glSecondaryColorPointer","glSecondaryColorPointerEXT");
setGLExtensionFuncPtr(_glVertexAttribPointer,
"glVertexAttribPointer","glVertexAttribPointerARB");
setGLExtensionFuncPtr(_glVertexAttribIPointer, "glVertexAttribIPointer");
setGLExtensionFuncPtr(_glVertexAttribLPointer,
"glVertexAttribLPointer","glVertexAttribPointerARB");
setGLExtensionFuncPtr(_glEnableVertexAttribArray,
"glEnableVertexAttribArray","glEnableVertexAttribArrayARB");
setGLExtensionFuncPtr(_glMultiTexCoord4f,
"glMultiTexCoord4f","glMultiTexCoord4fARB");
setGLExtensionFuncPtr(_glVertexAttrib4f, "glVertexAttrib4f");
setGLExtensionFuncPtr(_glVertexAttrib4fv, "glVertexAttrib4fv");
setGLExtensionFuncPtr(_glDisableVertexAttribArray,
"glDisableVertexAttribArray","glDisableVertexAttribArrayARB");
setGLExtensionFuncPtr(_glBindBuffer, "glBindBuffer","glBindBufferARB");
setGLExtensionFuncPtr(_glDrawArraysInstanced,
"glDrawArraysInstanced","glDrawArraysInstancedARB","glDrawArraysInstancedEXT");
setGLExtensionFuncPtr(_glDrawElementsInstanced,
"glDrawElementsInstanced","glDrawElementsInstancedARB","glDrawElementsInstancedEXT");
if (osg::getGLVersionNumber() >= 2.0 ||
osg::isGLExtensionSupported(_contextID, "GL_ARB_vertex_shader") ||
OSG_GLES2_FEATURES || OSG_GL3_FEATURES)
{
glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS,&_glMaxTextureUnits);
#ifdef OSG_GL_FIXED_FUNCTION_AVAILABLE
glGetIntegerv(GL_MAX_TEXTURE_COORDS, &_glMaxTextureCoords);
#else
_glMaxTextureCoords = _glMaxTextureUnits;
#endif
}
else if ( osg::getGLVersionNumber() >= 1.3 ||
osg::isGLExtensionSupported(_contextID,"GL_ARB_multitexture") ||
osg::isGLExtensionSupported(_contextID,"GL_EXT_multitexture") ||
OSG_GLES1_FEATURES)
{
GLint maxTextureUnits = 0;
glGetIntegerv(GL_MAX_TEXTURE_UNITS,&maxTextureUnits);
_glMaxTextureUnits = maxTextureUnits;
_glMaxTextureCoords = maxTextureUnits;
}
else
{
_glMaxTextureUnits = 1;
_glMaxTextureCoords = 1;
}
if (_glExtensions->isARBTimerQuerySupported)
{
const GLubyte* renderer = glGetString(GL_RENDERER);
std::string rendererString = renderer ? (const char*)renderer : "";
if (rendererString.find("Radeon")!=std::string::npos ||
rendererString.find("RADEON")!=std::string::npos ||
rendererString.find("FirePro")!=std::string::npos)
{
// AMD/ATI drivers are producing an invalid enumerate error on the
// glGetQueryiv(GL_TIMESTAMP, GL_QUERY_COUNTER_BITS_ARB, &bits);
// call so work around it by assuming 64 bits for counter.
setTimestampBits(64);
//setTimestampBits(0);
}
else
{
GLint bits = 0;
_glExtensions->glGetQueryiv(GL_TIMESTAMP,
GL_QUERY_COUNTER_BITS_ARB, &bits);
setTimestampBits(bits);
}
}
_extensionProcsInitialized = true;
if (_graphicsCostEstimator.valid())
{
RenderInfo renderInfo(this,0);
_graphicsCostEstimator->calibrate(renderInfo);
}
}
void State::releaseGLObjects()
{
// release any GL objects held by the shader composer
_shaderComposer->releaseGLObjects(this);
// release any StateSet's on the stack
for(StateSetStack::iterator itr = _stateStateStack.begin();
itr != _stateStateStack.end();
++itr)
{
(*itr)->releaseGLObjects(this);
}
_modeMap.clear();
_textureModeMapList.clear();
// release any cached attributes
for(AttributeMap::iterator aitr = _attributeMap.begin();
aitr != _attributeMap.end();
++aitr)
{
AttributeStack& as = aitr->second;
if (as.global_default_attribute.valid())
{
as.global_default_attribute->releaseGLObjects(this);
}
}
_attributeMap.clear();
// release any cached texture attributes
for(TextureAttributeMapList::iterator itr =
_textureAttributeMapList.begin();
itr != _textureAttributeMapList.end();
++itr)
{
AttributeMap& attributeMap = *itr;
for(AttributeMap::iterator aitr = attributeMap.begin();
aitr != attributeMap.end();
++aitr)
{
AttributeStack& as = aitr->second;
if (as.global_default_attribute.valid())
{
as.global_default_attribute->releaseGLObjects(this);
}
}
}
_textureAttributeMapList.clear();
}
void State::reset()
{
OSG_NOTICE<<std::endl<<"State::reset() ***************************
"<<std::endl;
#if 1
for(ModeMap::iterator mitr=_modeMap.begin();
mitr!=_modeMap.end();
++mitr)
{
ModeStack& ms = mitr->second;
ms.valueVec.clear();
ms.last_applied_value = !ms.global_default_value;
ms.changed = true;
}
#else
_modeMap.clear();
#endif
_modeMap[GL_DEPTH_TEST].global_default_value = true;
_modeMap[GL_DEPTH_TEST].changed = true;
// go through all active StateAttribute's, setting to change to force
update,
// the idea is to leave only the global defaults left.
for(AttributeMap::iterator aitr=_attributeMap.begin();
aitr!=_attributeMap.end();
++aitr)
{
AttributeStack& as = aitr->second;
as.attributeVec.clear();
as.last_applied_attribute = NULL;
as.last_applied_shadercomponent = NULL;
as.changed = true;
}
// we can do a straight clear, we arn't interested in GL_DEPTH_TEST
defaults in texture modes.
for(TextureModeMapList::iterator tmmItr=_textureModeMapList.begin();
tmmItr!=_textureModeMapList.end();
++tmmItr)
{
tmmItr->clear();
}
// empty all the texture attributes as per normal attributes, leaving only
the global defaults left.
for(TextureAttributeMapList::iterator
tamItr=_textureAttributeMapList.begin();
tamItr!=_textureAttributeMapList.end();
++tamItr)
{
AttributeMap& attributeMap = *tamItr;
// go through all active StateAttribute's, setting to change to force
update.
for(AttributeMap::iterator aitr=attributeMap.begin();
aitr!=attributeMap.end();
++aitr)
{
AttributeStack& as = aitr->second;
as.attributeVec.clear();
as.last_applied_attribute = NULL;
as.last_applied_shadercomponent = NULL;
as.changed = true;
}
}
_stateStateStack.clear();
_modelView = _identity;
_projection = _identity;
dirtyAllVertexArrays();
#if 1
// reset active texture unit values and call OpenGL
// note, this OpenGL op precludes the use of State::reset() without a
// valid graphics context, therefore the new implementation below
// is preferred.
setActiveTextureUnit(0);
#else
// reset active texture unit values without calling OpenGL
_currentActiveTextureUnit = 0;
_currentClientActiveTextureUnit = 0;
#endif
_shaderCompositionDirty = true;
_currentShaderCompositionUniformList.clear();
_lastAppliedProgramObject = 0;
// what about uniforms??? need to clear them too...
// go through all active Uniform's, setting to change to force update,
// the idea is to leave only the global defaults left.
for(UniformMap::iterator uitr=_uniformMap.begin();
uitr!=_uniformMap.end();
++uitr)
{
UniformStack& us = uitr->second;
us.uniformVec.clear();
}
}
void State::setInitialViewMatrix(const osg::RefMatrix* matrix)
{
if (matrix) _initialViewMatrix = matrix;
else _initialViewMatrix = _identity;
_initialInverseViewMatrix.invert(*_initialViewMatrix);
}
void State::setMaxTexturePoolSize(unsigned int size)
{
_maxTexturePoolSize = size;
osg::get<TextureObjectManager>(_contextID)->setMaxTexturePoolSize(size);
OSG_INFO<<"osg::State::_maxTexturePoolSize="<<_maxTexturePoolSize<<std::endl;
}
void State::setMaxBufferObjectPoolSize(unsigned int size)
{
_maxBufferObjectPoolSize = size;
osg::get<GLBufferObjectManager>(_contextID)->setMaxGLBufferObjectPoolSize(_maxBufferObjectPoolSize);
OSG_INFO<<"osg::State::_maxBufferObjectPoolSize="<<_maxBufferObjectPoolSize<<std::endl;
}
void State::pushStateSet(const StateSet* dstate)
{
_stateStateStack.push_back(dstate);
if (dstate)
{
pushModeList(_modeMap,dstate->getModeList());
// iterator through texture modes.
unsigned int unit;
const StateSet::TextureModeList& ds_textureModeList =
dstate->getTextureModeList();
for(unit=0;unit<ds_textureModeList.size();++unit)
{
pushModeList(getOrCreateTextureModeMap(unit),ds_textureModeList[unit]);
}
pushAttributeList(_attributeMap,dstate->getAttributeList());
// iterator through texture attributes.
const StateSet::TextureAttributeList& ds_textureAttributeList =
dstate->getTextureAttributeList();
for(unit=0;unit<ds_textureAttributeList.size();++unit)
{
pushAttributeList(getOrCreateTextureAttributeMap(unit),ds_textureAttributeList[unit]);
}
pushUniformList(_uniformMap,dstate->getUniformList());
pushDefineList(_defineMap,dstate->getDefineList());
}
// OSG_NOTICE<<"State::pushStateSet()"<<_stateStateStack.size()<<std::endl;
}
void State::popAllStateSets()
{
//
OSG_NOTICE<<"State::popAllStateSets()"<<_stateStateStack.size()<<std::endl;
while (!_stateStateStack.empty()) popStateSet();
applyProjectionMatrix(0);
applyModelViewMatrix(0);
_lastAppliedProgramObject = 0;
}
void State::popStateSet()
{
// OSG_NOTICE<<"State::popStateSet()"<<_stateStateStack.size()<<std::endl;
if (_stateStateStack.empty()) return;
const StateSet* dstate = _stateStateStack.back();
if (dstate)
{
popModeList(_modeMap,dstate->getModeList());
// iterator through texture modes.
unsigned int unit;
const StateSet::TextureModeList& ds_textureModeList =
dstate->getTextureModeList();
for(unit=0;unit<ds_textureModeList.size();++unit)
{
popModeList(getOrCreateTextureModeMap(unit),ds_textureModeList[unit]);
}
popAttributeList(_attributeMap,dstate->getAttributeList());
// iterator through texture attributes.
const StateSet::TextureAttributeList& ds_textureAttributeList =
dstate->getTextureAttributeList();
for(unit=0;unit<ds_textureAttributeList.size();++unit)
{
popAttributeList(getOrCreateTextureAttributeMap(unit),ds_textureAttributeList[unit]);
}
popUniformList(_uniformMap,dstate->getUniformList());
popDefineList(_defineMap,dstate->getDefineList());
}
// remove the top draw state from the stack.
_stateStateStack.pop_back();
}
void State::insertStateSet(unsigned int pos,const StateSet* dstate)
{
StateSetStack tempStack;
// first pop the StateSet above the position we need to insert at
while (_stateStateStack.size()>pos)
{
tempStack.push_back(_stateStateStack.back());
popStateSet();
}
// push our new stateset
pushStateSet(dstate);
// push back the original ones
for(StateSetStack::reverse_iterator itr = tempStack.rbegin();
itr != tempStack.rend();
++itr)
{
pushStateSet(*itr);
}
}
void State::removeStateSet(unsigned int pos)
{
if (pos >= _stateStateStack.size())
{
OSG_NOTICE<<"Warning: State::removeStateSet("<<pos<<") out of
range"<<std::endl;
return;
}
// record the StateSet above the one we intend to remove
StateSetStack tempStack;
while (_stateStateStack.size()-1>pos)
{
tempStack.push_back(_stateStateStack.back());
popStateSet();
}
// remove the intended StateSet as well
popStateSet();
// push back the original ones that were above the remove StateSet
for(StateSetStack::reverse_iterator itr = tempStack.rbegin();
itr != tempStack.rend();
++itr)
{
pushStateSet(*itr);
}
}
void State::captureCurrentState(StateSet& stateset) const
{
// empty the stateset first.
stateset.clear();
for(ModeMap::const_iterator mitr=_modeMap.begin();
mitr!=_modeMap.end();
++mitr)
{
// note GLMode = mitr->first
const ModeStack& ms = mitr->second;
if (!ms.valueVec.empty())
{
stateset.setMode(mitr->first,ms.valueVec.back());
}
}
for(AttributeMap::const_iterator aitr=_attributeMap.begin();
aitr!=_attributeMap.end();
++aitr)
{
const AttributeStack& as = aitr->second;
if (!as.attributeVec.empty())
{
stateset.setAttribute(const_cast<StateAttribute*>(as.attributeVec.back().first));
}
}
}
void State::apply(const StateSet* dstate)
{
if (_checkGLErrors==ONCE_PER_ATTRIBUTE) checkGLErrors("start of
State::apply(StateSet*)");
// equivalent to:
//pushStateSet(dstate);
//apply();
//popStateSet();
//return;
if (dstate)
{
// push the stateset on the stack so it can be querried from within
StateAttribute
_stateStateStack.push_back(dstate);
_currentShaderCompositionUniformList.clear();
// apply all texture state and modes
const StateSet::TextureModeList& ds_textureModeList =
dstate->getTextureModeList();
const StateSet::TextureAttributeList& ds_textureAttributeList =
dstate->getTextureAttributeList();
unsigned int unit;
unsigned int unitMax = maximum(static_cast<unsigned
int>(ds_textureModeList.size()),static_cast<unsigned
int>(ds_textureAttributeList.size()));
unitMax = maximum(static_cast<unsigned
int>(unitMax),static_cast<unsigned int>(_textureModeMapList.size()));
unitMax = maximum(static_cast<unsigned
int>(unitMax),static_cast<unsigned int>(_textureAttributeMapList.size()));
for(unit=0;unit<unitMax;++unit)
{
if (unit<ds_textureModeList.size())
applyModeListOnTexUnit(unit,getOrCreateTextureModeMap(unit),ds_textureModeList[unit]);
else if (unit<_textureModeMapList.size())
applyModeMapOnTexUnit(unit,_textureModeMapList[unit]);
if (unit<ds_textureAttributeList.size())
applyAttributeListOnTexUnit(unit,getOrCreateTextureAttributeMap(unit),ds_textureAttributeList[unit]);
else if (unit<_textureAttributeMapList.size())
applyAttributeMapOnTexUnit(unit,_textureAttributeMapList[unit]);
}
const Program::PerContextProgram* previousLastAppliedProgramObject =
_lastAppliedProgramObject;
applyModeList(_modeMap,dstate->getModeList());
#if 1
pushDefineList(_defineMap, dstate->getDefineList());
#else
applyDefineList(_defineMap, dstate->getDefineList());
#endif
applyAttributeList(_attributeMap,dstate->getAttributeList());
if ((_lastAppliedProgramObject!=0) &&
(previousLastAppliedProgramObject==_lastAppliedProgramObject) &&
_defineMap.changed)
{
// OSG_NOTICE<<"State::apply(StateSet*) Program already applied
("<<(previousLastAppliedProgramObject==_lastAppliedProgramObject)<<") and
_defineMap.changed= "<<_defineMap.changed<<std::endl;
_lastAppliedProgramObject->getProgram()->apply(*this);
}
if (_shaderCompositionEnabled)
{
if (previousLastAppliedProgramObject == _lastAppliedProgramObject
|| _lastAppliedProgramObject==0)
{
// No program has been applied by the StateSet stack so assume
shader composition is required
applyShaderComposition();
}
}
if (dstate->getUniformList().empty())
{
if (_currentShaderCompositionUniformList.empty())
applyUniformMap(_uniformMap);
else applyUniformList(_uniformMap,
_currentShaderCompositionUniformList);
}
else
{
if (_currentShaderCompositionUniformList.empty())
applyUniformList(_uniformMap, dstate->getUniformList());
else
{
// need top merge uniforms lists, but cheat for now by just
applying both.
_currentShaderCompositionUniformList.insert(dstate->getUniformList().begin(),
dstate->getUniformList().end());
applyUniformList(_uniformMap,
_currentShaderCompositionUniformList);
}
}
#if 1
popDefineList(_defineMap, dstate->getDefineList());
#endif
// pop the stateset from the stack
_stateStateStack.pop_back();
}
else
{
// no incoming stateset, so simply apply state.
apply();
}
if (_checkGLErrors==ONCE_PER_ATTRIBUTE) checkGLErrors("end of
State::apply(StateSet*)");
}
void State::apply()
{
if (_checkGLErrors==ONCE_PER_ATTRIBUTE) checkGLErrors("start of
State::apply()");
_currentShaderCompositionUniformList.clear();
// apply all texture state and modes
unsigned int unit;
unsigned int unitMax =
maximum(_textureModeMapList.size(),_textureAttributeMapList.size());
for(unit=0;unit<unitMax;++unit)
{
if (unit<_textureModeMapList.size())
applyModeMapOnTexUnit(unit,_textureModeMapList[unit]);
if (unit<_textureAttributeMapList.size())
applyAttributeMapOnTexUnit(unit,_textureAttributeMapList[unit]);
}
// go through all active OpenGL modes, enabling/disable where
// appropriate.
applyModeMap(_modeMap);
const Program::PerContextProgram* previousLastAppliedProgramObject =
_lastAppliedProgramObject;
// go through all active StateAttribute's, applying where appropriate.
applyAttributeMap(_attributeMap);
if ((_lastAppliedProgramObject!=0) &&
(previousLastAppliedProgramObject==_lastAppliedProgramObject) &&
_defineMap.changed)
{
//OSG_NOTICE<<"State::apply() Program already applied
("<<(previousLastAppliedProgramObject==_lastAppliedProgramObject)<<") and
_defineMap.changed= "<<_defineMap.changed<<std::endl;
if (_lastAppliedProgramObject)
_lastAppliedProgramObject->getProgram()->apply(*this);
}
if (_shaderCompositionEnabled)
{
applyShaderComposition();
}
if (_currentShaderCompositionUniformList.empty())
applyUniformMap(_uniformMap);
else applyUniformList(_uniformMap, _currentShaderCompositionUniformList);
if (_checkGLErrors==ONCE_PER_ATTRIBUTE) checkGLErrors("end of
State::apply()");
}
void State::applyShaderComposition()
{
if (_shaderCompositionEnabled)
{
if (_shaderCompositionDirty)
{
// if (isNotifyEnabled(osg::INFO)) print(notify(osg::INFO));
// build lits of current ShaderComponents
ShaderComponents shaderComponents;
// OSG_NOTICE<<"State::applyShaderComposition() :
_attributeMap.size()=="<<_attributeMap.size()<<std::endl;
for(AttributeMap::iterator itr = _attributeMap.begin();
itr != _attributeMap.end();
++itr)
{
// OSG_NOTICE<<" itr->first="<<itr->first.first<<",
"<<itr->first.second<<std::endl;
AttributeStack& as = itr->second;
if (as.last_applied_shadercomponent)
{
shaderComponents.push_back(const_cast<ShaderComponent*>(as.last_applied_shadercomponent));
}
}
_currentShaderCompositionProgram =
_shaderComposer->getOrCreateProgram(shaderComponents);
}
if (_currentShaderCompositionProgram)
{
Program::PerContextProgram* pcp =
_currentShaderCompositionProgram->getPCP(*this);
if (_lastAppliedProgramObject != pcp)
applyAttribute(_currentShaderCompositionProgram);
}
}
}
void State::haveAppliedMode(StateAttribute::GLMode
mode,StateAttribute::GLModeValue value)
{
haveAppliedMode(_modeMap,mode,value);
}
void State::haveAppliedMode(StateAttribute::GLMode mode)
{
haveAppliedMode(_modeMap,mode);
}
void State::haveAppliedAttribute(const StateAttribute* attribute)
{
haveAppliedAttribute(_attributeMap,attribute);
}
void State::haveAppliedAttribute(StateAttribute::Type type, unsigned int member)
{
haveAppliedAttribute(_attributeMap,type,member);
}
bool State::getLastAppliedMode(StateAttribute::GLMode mode) const
{
return getLastAppliedMode(_modeMap,mode);
}
const StateAttribute* State::getLastAppliedAttribute(StateAttribute::Type type,
unsigned int member) const
{
return getLastAppliedAttribute(_attributeMap,type,member);
}
void State::haveAppliedTextureMode(unsigned int unit,StateAttribute::GLMode
mode,StateAttribute::GLModeValue value)
{
haveAppliedMode(getOrCreateTextureModeMap(unit),mode,value);
}
void State::haveAppliedTextureMode(unsigned int unit,StateAttribute::GLMode
mode)
{
haveAppliedMode(getOrCreateTextureModeMap(unit),mode);
}
void State::haveAppliedTextureAttribute(unsigned int unit,const StateAttribute*
attribute)
{
haveAppliedAttribute(getOrCreateTextureAttributeMap(unit),attribute);
}
void State::haveAppliedTextureAttribute(unsigned int unit,StateAttribute::Type
type, unsigned int member)
{
haveAppliedAttribute(getOrCreateTextureAttributeMap(unit),type,member);
}
bool State::getLastAppliedTextureMode(unsigned int unit,StateAttribute::GLMode
mode) const
{
if (unit>=_textureModeMapList.size()) return false;
return getLastAppliedMode(_textureModeMapList[unit],mode);
}
const StateAttribute* State::getLastAppliedTextureAttribute(unsigned int
unit,StateAttribute::Type type, unsigned int member) const
{
if (unit>=_textureAttributeMapList.size()) return NULL;
return getLastAppliedAttribute(_textureAttributeMapList[unit],type,member);
}
void State::haveAppliedMode(ModeMap& modeMap,StateAttribute::GLMode
mode,StateAttribute::GLModeValue value)
{
ModeStack& ms = modeMap[mode];
ms.last_applied_value = value & StateAttribute::ON;
// will need to disable this mode on next apply so set it to changed.
ms.changed = true;
}
/** mode has been set externally, update state to reflect this setting.*/
void State::haveAppliedMode(ModeMap& modeMap,StateAttribute::GLMode mode)
{
ModeStack& ms = modeMap[mode];
// don't know what last applied value is can't apply it.
// assume that it has changed by toggle the value of last_applied_value.
ms.last_applied_value = !ms.last_applied_value;
// will need to disable this mode on next apply so set it to changed.
ms.changed = true;
}
/** attribute has been applied externally, update state to reflect this
setting.*/
void State::haveAppliedAttribute(AttributeMap& attributeMap,const
StateAttribute* attribute)
{
if (attribute)
{
AttributeStack& as = attributeMap[attribute->getTypeMemberPair()];
as.last_applied_attribute = attribute;
// will need to update this attribute on next apply so set it to
changed.
as.changed = true;
}
}
void State::haveAppliedAttribute(AttributeMap&
attributeMap,StateAttribute::Type type, unsigned int member)
{
AttributeMap::iterator itr =
attributeMap.find(StateAttribute::TypeMemberPair(type,member));
if (itr!=attributeMap.end())
{
AttributeStack& as = itr->second;
as.last_applied_attribute = 0L;
// will need to update this attribute on next apply so set it to
changed.
as.changed = true;
}
}
bool State::getLastAppliedMode(const ModeMap& modeMap,StateAttribute::GLMode
mode) const
{
ModeMap::const_iterator itr = modeMap.find(mode);
if (itr!=modeMap.end())
{
const ModeStack& ms = itr->second;
return ms.last_applied_value;
}
else
{
return false;
}
}
const StateAttribute* State::getLastAppliedAttribute(const AttributeMap&
attributeMap,StateAttribute::Type type, unsigned int member) const
{
AttributeMap::const_iterator itr =
attributeMap.find(StateAttribute::TypeMemberPair(type,member));
if (itr!=attributeMap.end())
{
const AttributeStack& as = itr->second;
return as.last_applied_attribute;
}
else
{
return NULL;
}
}
void State::dirtyAllModes()
{
for(ModeMap::iterator mitr=_modeMap.begin();
mitr!=_modeMap.end();
++mitr)
{
ModeStack& ms = mitr->second;
ms.last_applied_value = !ms.last_applied_value;
ms.changed = true;
}
for(TextureModeMapList::iterator tmmItr=_textureModeMapList.begin();
tmmItr!=_textureModeMapList.end();
++tmmItr)
{
for(ModeMap::iterator mitr=tmmItr->begin();
mitr!=tmmItr->end();
++mitr)
{
ModeStack& ms = mitr->second;
ms.last_applied_value = !ms.last_applied_value;
ms.changed = true;
}
}
}
void State::dirtyAllAttributes()
{
for(AttributeMap::iterator aitr=_attributeMap.begin();
aitr!=_attributeMap.end();
++aitr)
{
AttributeStack& as = aitr->second;
as.last_applied_attribute = 0;
as.changed = true;
}
for(TextureAttributeMapList::iterator
tamItr=_textureAttributeMapList.begin();
tamItr!=_textureAttributeMapList.end();
++tamItr)
{
AttributeMap& attributeMap = *tamItr;
for(AttributeMap::iterator aitr=attributeMap.begin();
aitr!=attributeMap.end();
++aitr)
{
AttributeStack& as = aitr->second;
as.last_applied_attribute = 0;
as.changed = true;
}
}
}
Polytope State::getViewFrustum() const
{
Polytope cv;
cv.setToUnitFrustum();
cv.transformProvidingInverse((*_modelView)*(*_projection));
return cv;
}
void State::resetVertexAttributeAlias(bool compactAliasing, unsigned int
numTextureUnits)
{
_texCoordAliasList.clear();
_attributeBindingList.clear();
if (compactAliasing)
{
unsigned int slot = 0;
setUpVertexAttribAlias(_vertexAlias, slot++,
"gl_Vertex","osg_Vertex","vec4 ");
setUpVertexAttribAlias(_normalAlias, slot++,
"gl_Normal","osg_Normal","vec3 ");
setUpVertexAttribAlias(_colorAlias, slot++,
"gl_Color","osg_Color","vec4 ");
_texCoordAliasList.resize(numTextureUnits);
for(unsigned int i=0; i<_texCoordAliasList.size(); i++)
{
std::stringstream gl_MultiTexCoord;
std::stringstream osg_MultiTexCoord;
gl_MultiTexCoord<<"gl_MultiTexCoord"<<i;
osg_MultiTexCoord<<"osg_MultiTexCoord"<<i;
setUpVertexAttribAlias(_texCoordAliasList[i], slot++,
gl_MultiTexCoord.str(), osg_MultiTexCoord.str(), "vec4 ");
}
setUpVertexAttribAlias(_secondaryColorAlias, slot++,
"gl_SecondaryColor","osg_SecondaryColor","vec4 ");
setUpVertexAttribAlias(_fogCoordAlias, slot++,
"gl_FogCoord","osg_FogCoord","float ");
}
else
{
setUpVertexAttribAlias(_vertexAlias,0, "gl_Vertex","osg_Vertex","vec4
");
setUpVertexAttribAlias(_normalAlias, 2, "gl_Normal","osg_Normal","vec3
");
setUpVertexAttribAlias(_colorAlias, 3, "gl_Color","osg_Color","vec4 ");
setUpVertexAttribAlias(_secondaryColorAlias, 4,
"gl_SecondaryColor","osg_SecondaryColor","vec4 ");
setUpVertexAttribAlias(_fogCoordAlias, 5,
"gl_FogCoord","osg_FogCoord","float ");
unsigned int base = 8;
_texCoordAliasList.resize(numTextureUnits);
for(unsigned int i=0; i<_texCoordAliasList.size(); i++)
{
std::stringstream gl_MultiTexCoord;
std::stringstream osg_MultiTexCoord;
gl_MultiTexCoord<<"gl_MultiTexCoord"<<i;
osg_MultiTexCoord<<"osg_MultiTexCoord"<<i;
setUpVertexAttribAlias(_texCoordAliasList[i], base+i,
gl_MultiTexCoord.str(), osg_MultiTexCoord.str(), "vec4 ");
}
}
}
void State::disableAllVertexArrays()
{
disableVertexPointer();
disableColorPointer();
disableFogCoordPointer();
disableNormalPointer();
disableSecondaryColorPointer();
disableTexCoordPointersAboveAndIncluding(0);
disableVertexAttribPointersAboveAndIncluding(0);
}
void State::dirtyAllVertexArrays()
{
OSG_INFO<<"State::dirtyAllVertexArrays()"<<std::endl;
}
bool State::setClientActiveTextureUnit( unsigned int unit )
{
// if (true)
if (_currentClientActiveTextureUnit!=unit)
{
// OSG_NOTICE<<"State::setClientActiveTextureUnit( "<<unit<<")
done"<<std::endl;
_glClientActiveTexture(GL_TEXTURE0+unit);
_currentClientActiveTextureUnit = unit;
}
else
{
//OSG_NOTICE<<"State::setClientActiveTextureUnit( "<<unit<<") not
required."<<std::endl;
}
return true;
}
unsigned int State::getClientActiveTextureUnit() const
{
return _currentClientActiveTextureUnit;
}
bool State::checkGLErrors(const char* str1, const char* str2) const
{
GLenum errorNo = glGetError();
if (errorNo!=GL_NO_ERROR)
{
osg::NotifySeverity notifyLevel = NOTICE; // WARN;
const char* error = (char*)gluErrorString(errorNo);
if (error)
{
OSG_NOTIFY(notifyLevel)<<"Warning: detected OpenGL error '" <<
error<<"'";
}
else
{
OSG_NOTIFY(notifyLevel)<<"Warning: detected OpenGL error number 0x"
<< std::hex << errorNo << std::dec;
}
if (str1 || str2)
{
OSG_NOTIFY(notifyLevel)<<" at";
if (str1) { OSG_NOTIFY(notifyLevel)<<" "<<str1; }
if (str2) { OSG_NOTIFY(notifyLevel)<<" "<<str2; }
}
else
{
OSG_NOTIFY(notifyLevel)<<" in osg::State.";
}
OSG_NOTIFY(notifyLevel)<< std::endl;
return true;
}
return false;
}
bool State::checkGLErrors(StateAttribute::GLMode mode) const
{
GLenum errorNo = glGetError();
if (errorNo!=GL_NO_ERROR)
{
const char* error = (char*)gluErrorString(errorNo);
if (error)
{
OSG_NOTIFY(WARN)<<"Warning: detected OpenGL error '"<< error <<"'
after applying GLMode 0x"<<hex<<mode<<dec<< std::endl;
}
else
{
OSG_NOTIFY(WARN)<<"Warning: detected OpenGL error number 0x"<<
std::hex << errorNo <<" after applying GLMode 0x"<<hex<<mode<<dec<< std::endl;
}
return true;
}
return false;
}
bool State::checkGLErrors(const StateAttribute* attribute) const
{
GLenum errorNo = glGetError();
if (errorNo!=GL_NO_ERROR)
{
const char* error = (char*)gluErrorString(errorNo);
if (error)
{
OSG_NOTIFY(WARN)<<"Warning: detected OpenGL error '"<< error <<"'
after applying attribute "<<attribute->className()<<" "<<attribute<< std::endl;
}
else
{
OSG_NOTIFY(WARN)<<"Warning: detected OpenGL error number 0x"<<
std::hex << errorNo <<" after applying attribute "<<attribute->className()<<"
"<<attribute<< std::dec << std::endl;
}
return true;
}
return false;
}
void State::applyModelViewAndProjectionUniformsIfRequired()
{
if (!_lastAppliedProgramObject) return;
if (_modelViewMatrixUniform.valid())
_lastAppliedProgramObject->apply(*_modelViewMatrixUniform);
if (_projectionMatrixUniform)
_lastAppliedProgramObject->apply(*_projectionMatrixUniform);
if (_modelViewProjectionMatrixUniform)
_lastAppliedProgramObject->apply(*_modelViewProjectionMatrixUniform);
if (_normalMatrixUniform)
_lastAppliedProgramObject->apply(*_normalMatrixUniform);
}
namespace State_Utils
{
bool replace(std::string& str, const std::string& original_phrase, const
std::string& new_phrase)
{
// Prevent infinite loop : if original_phrase is empty, do nothing and
return false
if (original_phrase.empty()) return false;
bool replacedStr = false;
std::string::size_type pos = 0;
while((pos=str.find(original_phrase, pos))!=std::string::npos)
{
std::string::size_type endOfPhrasePos = pos+original_phrase.size();
if (endOfPhrasePos<str.size())
{
char c = str[endOfPhrasePos];
if ((c>='0' && c<='9') ||
(c>='a' && c<='z') ||
(c>='A' && c<='Z'))
{
pos = endOfPhrasePos;
continue;
}
}
replacedStr = true;
str.replace(pos, original_phrase.size(), new_phrase);
}
return replacedStr;
}
void replaceAndInsertDeclaration(std::string& source,
std::string::size_type declPos, const std::string& originalStr, const
std::string& newStr, const std::string& qualifier, const std::string&
declarationPrefix)
{
if (replace(source, originalStr, newStr))
{
source.insert(declPos, qualifier + declarationPrefix + newStr +
std::string(";\n"));
}
}
}
bool State::convertVertexShaderSourceToOsgBuiltIns(std::string& source) const
{
OSG_INFO<<"State::convertShaderSourceToOsgBuiltIns()"<<std::endl;
OSG_INFO<<"++Before Converted source
"<<std::endl<<source<<std::endl<<"++++++++"<<std::endl;
std::string attributeQualifier("attribute ");
// find the first legal insertion point for replacement declarations. GLSL
requires that nothing
// precede a "#verson" compiler directive, so we must insert new
declarations after it.
std::string::size_type declPos = source.rfind( "#version " );
if ( declPos != std::string::npos )
{
declPos = source.find(" ", declPos); // move to the first space after
"#version"
declPos = source.find_first_not_of(std::string(" "), declPos); // skip
all the spaces until you reach the version number
std::string versionNumber(source, declPos, 3);
int glslVersion = atoi(versionNumber.c_str());
OSG_INFO<<"shader version found: "<< glslVersion <<std::endl;
if (glslVersion >= 130) attributeQualifier = "in ";
// found the string, now find the next linefeed and set the insertion
point after it.
declPos = source.find( '\n', declPos );
declPos = declPos != std::string::npos ? declPos+1 : source.length();
}
else
{
declPos = 0;
}
std::string::size_type extPos = source.rfind( "#extension " );
if ( extPos != std::string::npos )
{
// found the string, now find the next linefeed and set the insertion
point after it.
declPos = source.find( '\n', extPos );
declPos = declPos != std::string::npos ? declPos+1 : source.length();
}
if (_useModelViewAndProjectionUniforms)
{
// replace ftransform as it only works with built-ins
State_Utils::replace(source, "ftransform()",
"gl_ModelViewProjectionMatrix * gl_Vertex");
// replace built in uniform
State_Utils::replaceAndInsertDeclaration(source, declPos,
"gl_ModelViewMatrix", "osg_ModelViewMatrix", "uniform ", "mat4 ");
State_Utils::replaceAndInsertDeclaration(source, declPos,
"gl_ModelViewProjectionMatrix", "osg_ModelViewProjectionMatrix", "uniform ",
"mat4 ");
State_Utils::replaceAndInsertDeclaration(source, declPos,
"gl_ProjectionMatrix", "osg_ProjectionMatrix", "uniform ", "mat4 ");
State_Utils::replaceAndInsertDeclaration(source, declPos,
"gl_NormalMatrix", "osg_NormalMatrix", "uniform ", "mat3 ");
}
if (_useVertexAttributeAliasing)
{
State_Utils::replaceAndInsertDeclaration(source, declPos,
_vertexAlias._glName, _vertexAlias._osgName,
attributeQualifier, _vertexAlias._declaration);
State_Utils::replaceAndInsertDeclaration(source, declPos,
_normalAlias._glName, _normalAlias._osgName,
attributeQualifier, _normalAlias._declaration);
State_Utils::replaceAndInsertDeclaration(source, declPos,
_colorAlias._glName, _colorAlias._osgName,
attributeQualifier, _colorAlias._declaration);
State_Utils::replaceAndInsertDeclaration(source, declPos,
_secondaryColorAlias._glName, _secondaryColorAlias._osgName,
attributeQualifier, _secondaryColorAlias._declaration);
State_Utils::replaceAndInsertDeclaration(source, declPos,
_fogCoordAlias._glName, _fogCoordAlias._osgName,
attributeQualifier, _fogCoordAlias._declaration);
for (size_t i=0; i<_texCoordAliasList.size(); i++)
{
const VertexAttribAlias& texCoordAlias = _texCoordAliasList[i];
State_Utils::replaceAndInsertDeclaration(source, declPos,
texCoordAlias._glName, texCoordAlias._osgName, attributeQualifier,
texCoordAlias._declaration);
}
}
OSG_INFO<<"-------- Converted source
"<<std::endl<<source<<std::endl<<"----------------"<<std::endl;
return true;
}
void State::setUpVertexAttribAlias(VertexAttribAlias& alias, GLuint location,
const std::string glName, const std::string osgName, const std::string&
declaration)
{
alias = VertexAttribAlias(location, glName, osgName, declaration);
_attributeBindingList[osgName] = location;
// OSG_NOTICE<<"State::setUpVertexAttribAlias("<<location<<" "<<glName<<"
"<<osgName<<")"<<std::endl;
}
void State::applyProjectionMatrix(const osg::RefMatrix* matrix)
{
if (_projection!=matrix)
{
if (matrix)
{
_projection=matrix;
}
else
{
_projection=_identity;
}
if (_useModelViewAndProjectionUniforms)
{
if (_projectionMatrixUniform.valid())
_projectionMatrixUniform->set(*_projection);
updateModelViewAndProjectionMatrixUniforms();
}
#ifdef OSG_GL_MATRICES_AVAILABLE
glMatrixMode( GL_PROJECTION );
glLoadMatrix(_projection->ptr());
glMatrixMode( GL_MODELVIEW );
#endif
}
}
void State::loadModelViewMatrix()
{
if (_useModelViewAndProjectionUniforms)
{
if (_modelViewMatrixUniform.valid())
_modelViewMatrixUniform->set(*_modelView);
updateModelViewAndProjectionMatrixUniforms();
}
#ifdef OSG_GL_MATRICES_AVAILABLE
glLoadMatrix(_modelView->ptr());
#endif
}
void State::applyModelViewMatrix(const osg::RefMatrix* matrix)
{
if (_modelView!=matrix)
{
if (matrix)
{
_modelView=matrix;
}
else
{
_modelView=_identity;
}
loadModelViewMatrix();
}
}
void State::applyModelViewMatrix(const osg::Matrix& matrix)
{
_modelViewCache->set(matrix);
_modelView = _modelViewCache;
loadModelViewMatrix();
}
#include <osg/io_utils>
void State::updateModelViewAndProjectionMatrixUniforms()
{
if (_modelViewProjectionMatrixUniform.valid())
_modelViewProjectionMatrixUniform->set((*_modelView) * (*_projection));
if (_normalMatrixUniform.valid())
{
Matrix mv(*_modelView);
mv.setTrans(0.0, 0.0, 0.0);
Matrix matrix;
matrix.invert(mv);
Matrix3 normalMatrix(matrix(0,0), matrix(1,0), matrix(2,0),
matrix(0,1), matrix(1,1), matrix(2,1),
matrix(0,2), matrix(1,2), matrix(2,2));
_normalMatrixUniform->set(normalMatrix);
}
}
void State::drawQuads(GLint first, GLsizei count, GLsizei primCount)
{
// OSG_NOTICE<<"State::drawQuads("<<first<<", "<<count<<")"<<std::endl;
unsigned int array = first % 4;
unsigned int offsetFirst = ((first-array) / 4) * 6;
unsigned int numQuads = (count/4);
unsigned int numIndices = numQuads * 6;
unsigned int endOfIndices = offsetFirst+numIndices;
if (endOfIndices<65536)
{
IndicesGLushort& indices = _quadIndicesGLushort[array];
if (endOfIndices >= indices.size())
{
// we need to expand the _indexArray to be big enough to cope with
all the quads required.
unsigned int numExistingQuads = indices.size()/6;
unsigned int numRequiredQuads = endOfIndices/6;
indices.reserve(endOfIndices);
for(unsigned int i=numExistingQuads; i<numRequiredQuads; ++i)
{
unsigned int base = i*4 + array;
indices.push_back(base);
indices.push_back(base+1);
indices.push_back(base+3);
indices.push_back(base+1);
indices.push_back(base+2);
indices.push_back(base+3);
// OSG_NOTICE<<" adding quad indices ("<<base<<")"<<std::endl;
}
}
// if (array!=0) return;
// OSG_NOTICE<<" glDrawElements(GL_TRIANGLES, "<<numIndices<<",
GL_UNSIGNED_SHORT, "<<&(indices[base])<<")"<<std::endl;
glDrawElementsInstanced(GL_TRIANGLES, numIndices, GL_UNSIGNED_SHORT,
&(indices[offsetFirst]), primCount);
}
else
{
IndicesGLuint& indices = _quadIndicesGLuint[array];
if (endOfIndices >= indices.size())
{
// we need to expand the _indexArray to be big enough to cope with
all the quads required.
unsigned int numExistingQuads = indices.size()/6;
unsigned int numRequiredQuads = endOfIndices/6;
indices.reserve(endOfIndices);
for(unsigned int i=numExistingQuads; i<numRequiredQuads; ++i)
{
unsigned int base = i*4 + array;
indices.push_back(base);
indices.push_back(base+1);
indices.push_back(base+3);
indices.push_back(base+1);
indices.push_back(base+2);
indices.push_back(base+3);
// OSG_NOTICE<<" adding quad indices ("<<base<<")"<<std::endl;
}
}
// if (array!=0) return;
// OSG_NOTICE<<" glDrawElements(GL_TRIANGLES, "<<numIndices<<",
GL_UNSIGNED_SHORT, "<<&(indices[base])<<")"<<std::endl;
glDrawElementsInstanced(GL_TRIANGLES, numIndices, GL_UNSIGNED_INT,
&(indices[offsetFirst]), primCount);
}
}
void State::ModeStack::print(std::ostream& fout) const
{
fout<<" valid = "<<valid<<std::endl;
fout<<" changed = "<<changed<<std::endl;
fout<<" last_applied_value = "<<last_applied_value<<std::endl;
fout<<" global_default_value = "<<global_default_value<<std::endl;
fout<<" valueVec { "<<std::endl;
for(ModeStack::ValueVec::const_iterator itr = valueVec.begin();
itr != valueVec.end();
++itr)
{
if (itr!=valueVec.begin()) fout<<", ";
fout<<*itr;
}
fout<<" }"<<std::endl;
}
void State::AttributeStack::print(std::ostream& fout) const
{
fout<<" changed = "<<changed<<std::endl;
fout<<" last_applied_attribute = "<<last_applied_attribute;
if (last_applied_attribute) fout<<",
"<<last_applied_attribute->className()<<",
"<<last_applied_attribute->getName()<<std::endl;
fout<<" last_applied_shadercomponent =
"<<last_applied_shadercomponent<<std::endl;
if (last_applied_shadercomponent) fout<<",
"<<last_applied_shadercomponent->className()<<",
"<<last_applied_shadercomponent->getName()<<std::endl;
fout<<" global_default_attribute =
"<<global_default_attribute.get()<<std::endl;
fout<<" attributeVec { ";
for(AttributeVec::const_iterator itr = attributeVec.begin();
itr != attributeVec.end();
++itr)
{
if (itr!=attributeVec.begin()) fout<<", ";
fout<<"("<<itr->first<<", "<<itr->second<<")";
}
fout<<" }"<<std::endl;
}
void State::UniformStack::print(std::ostream& fout) const
{
fout<<" UniformVec { ";
for(UniformVec::const_iterator itr = uniformVec.begin();
itr != uniformVec.end();
++itr)
{
if (itr!=uniformVec.begin()) fout<<", ";
fout<<"("<<itr->first<<", "<<itr->second<<")";
}
fout<<" }"<<std::endl;
}
void State::print(std::ostream& fout) const
{
#if 0
GraphicsContext* _graphicsContext;
unsigned int _contextID;
bool _shaderCompositionEnabled;
bool _shaderCompositionDirty;
osg::ref_ptr<ShaderComposer> _shaderComposer;
#endif
#if 0
osg::Program* _currentShaderCompositionProgram;
StateSet::UniformList _currentShaderCompositionUniformList;
#endif
#if 0
ref_ptr<FrameStamp> _frameStamp;
ref_ptr<const RefMatrix> _identity;
ref_ptr<const RefMatrix> _initialViewMatrix;
ref_ptr<const RefMatrix> _projection;
ref_ptr<const RefMatrix> _modelView;
ref_ptr<RefMatrix> _modelViewCache;
bool _useModelViewAndProjectionUniforms;
ref_ptr<Uniform> _modelViewMatrixUniform;
ref_ptr<Uniform> _projectionMatrixUniform;
ref_ptr<Uniform> _modelViewProjectionMatrixUniform;
ref_ptr<Uniform> _normalMatrixUniform;
Matrix _initialInverseViewMatrix;
ref_ptr<DisplaySettings> _displaySettings;
bool* _abortRenderingPtr;
CheckForGLErrors _checkGLErrors;
bool _useVertexAttributeAliasing;
VertexAttribAlias _vertexAlias;
VertexAttribAlias _normalAlias;
VertexAttribAlias _colorAlias;
VertexAttribAlias _secondaryColorAlias;
VertexAttribAlias _fogCoordAlias;
VertexAttribAliasList _texCoordAliasList;
Program::AttribBindingList _attributeBindingList;
#endif
fout<<"ModeMap _modeMap {"<<std::endl;
for(ModeMap::const_iterator itr = _modeMap.begin();
itr != _modeMap.end();
++itr)
{
fout<<" GLMode="<<itr->first<<", ModeStack {"<<std::endl;
itr->second.print(fout);
fout<<" }"<<std::endl;
}
fout<<"}"<<std::endl;
fout<<"AttributeMap _attributeMap {"<<std::endl;
for(AttributeMap::const_iterator itr = _attributeMap.begin();
itr != _attributeMap.end();
++itr)
{
fout<<" TypeMemberPaid=("<<itr->first.first<<",
"<<itr->first.second<<") AttributeStack {"<<std::endl;
itr->second.print(fout);
fout<<" }"<<std::endl;
}
fout<<"}"<<std::endl;
fout<<"UniformMap _uniformMap {"<<std::endl;
for(UniformMap::const_iterator itr = _uniformMap.begin();
itr != _uniformMap.end();
++itr)
{
fout<<" name="<<itr->first<<", UniformStack {"<<std::endl;
itr->second.print(fout);
fout<<" }"<<std::endl;
}
fout<<"}"<<std::endl;
fout<<"StateSetStack _stateSetStack {"<<std::endl;
for(StateSetStack::const_iterator itr = _stateStateStack.begin();
itr != _stateStateStack.end();
++itr)
{
fout<<(*itr)->getName()<<" "<<*itr<<std::endl;
}
fout<<"}"<<std::endl;
}
void State::frameCompleted()
{
if (getTimestampBits())
{
GLint64 timestamp;
_glExtensions->glGetInteger64v(GL_TIMESTAMP, ×tamp);
setGpuTimestamp(osg::Timer::instance()->tick(), timestamp);
//OSG_NOTICE<<"State::frameCompleted() setting time stamp.
timestamp="<<timestamp<<std::endl;
}
}
bool State::DefineMap::updateCurrentDefines()
{
currentDefines.clear();
for(DefineStackMap::const_iterator itr = map.begin();
itr != map.end();
++itr)
{
const DefineStack::DefineVec& dv = itr->second.defineVec;
if (!dv.empty())
{
const StateSet::DefinePair& dp = dv.back();
if (dp.second & osg::StateAttribute::ON)
{
currentDefines[itr->first] = dp;
}
}
}
changed = false;
return true;
}
std::string State::getDefineString(const osg::ShaderDefines& shaderDefines)
{
if (_defineMap.changed) _defineMap.updateCurrentDefines();
const StateSet::DefineList& currentDefines = _defineMap.currentDefines;
ShaderDefines::const_iterator sd_itr = shaderDefines.begin();
StateSet::DefineList::const_iterator cd_itr = currentDefines.begin();
std::string shaderDefineStr;
while(sd_itr != shaderDefines.end() && cd_itr != currentDefines.end())
{
if ((*sd_itr) < cd_itr->first) ++sd_itr;
else if (cd_itr->first < (*sd_itr)) ++cd_itr;
else
{
const StateSet::DefinePair& dp = cd_itr->second;
shaderDefineStr += "#define ";
shaderDefineStr += cd_itr->first;
if (!dp.first.empty())
{
if (dp.first[0]!='(') shaderDefineStr += " ";
shaderDefineStr += dp.first;
}
#ifdef WIN32
shaderDefineStr += "\r\n";
#else
shaderDefineStr += "\n";
#endif
++sd_itr;
++cd_itr;
}
}
return shaderDefineStr;
}
bool State::supportsShaderRequirements(const osg::ShaderDefines&
shaderRequirements)
{
if (shaderRequirements.empty()) return true;
if (_defineMap.changed) _defineMap.updateCurrentDefines();
const StateSet::DefineList& currentDefines = _defineMap.currentDefines;
for(ShaderDefines::const_iterator sr_itr = shaderRequirements.begin();
sr_itr != shaderRequirements.end();
++sr_itr)
{
if (currentDefines.find(*sr_itr)==currentDefines.end()) return false;
}
return true;
}
bool State::supportsShaderRequirement(const std::string& shaderRequirement)
{
if (_defineMap.changed) _defineMap.updateCurrentDefines();
const StateSet::DefineList& currentDefines = _defineMap.currentDefines;
return (currentDefines.find(shaderRequirement)!=currentDefines.end());
}
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