Am 29.01.2015 um 11:17 schrieb Robert Osfield:
Hi Sebastian,
I have just re-read this thread and feel the time is right for me to
do a review of your changes. Could you provide me with your latest
changes?
See attached files.
It more or less allows to create an own StateAttribute which in my case
holds the defines etc.
As for the framework I built around this to add includes etc. : It
relies on boost/string etc. so it won't be of direct use.
As a general note, the current work I'm doing is focussing on passing
#define's into Shaders to toggle on/off features and provide defaults
via osg::StateSet::setDefine(..) style API, as well also allow GLSL
Shaders themselves to specify what they require via #pragam statements
in the GLSL shaders. The new functionality could reduce the need for
shader composer. I'm optimistic for many users the approach I'm
working on will be simple to use and fit in well with how
osg::Program/osg::Shader's have been used in application so far.
Now that would be great! Indeed this is what I tried to emulate with the
ShaderComposition. The changes that I did, where required to do things
like adding glBindFragment at the states. I deferred setting up state
like this by reimplementing the getOrCreateProgram virtual function of
the ShaderComposer. But this would be totally obsolete then.
Maybe it can totally replace my approach and provide some test-bed for
the new approach.
Will there be some mechanism creating a new program object when add a
define somewhere below an existing program, like the shader composition did?
Also i'd like to undefine on the way/ remove a define/ clear the
define-set somewhere in the hierarchy, will this be covered by ON/OFF,
OVERRIDE/PROTECTED mechanism of the state-attribute?
For example:
Group (with osg::Program X in stateset)
| |
| stateset A with define dA ->program with code of X and defines dA
| |
| ...
| stateset B with define dB -> program with code of X and defines dA & dB
|
stateset C with define dC -> program with code of X and define C
Cheers
Sebastian
I will start a new thread today or tomorrow on the topic of my work,
but first I need to flesh out a bit more of the design and
implementation so I can illustrate what I'm talking about with actual
OSG and GLSL code.
Cheers,
Robert.
On 5 February 2014 at 12:01, Sebastian Messerschmidt
<[email protected]
<mailto:[email protected]>> wrote:
Hi Robert,
maybe this one has gone below your radar. Can you please check on it?
I've developed this a bit more and found out that I had to provide
my own compare function to get rid of the additional program being
constructed.
If there are no objections from your side I'd like to prepare a
submission.
cheers
Sebastian
Hi Robert,
I've done my best to follow your instructions. See attached
changes vs. trunk.
The shadercomposition example still works as expected.
Comparing the outputs however, an additional program is build,
and I'm quite clueless, if my refactoring is correct (see
attached outputs)
I'd appreciate some advices here.
Hi Sebastian,
On 27 November 2013 11:26, Sebastian Messerschmidt
<[email protected]
<mailto:[email protected]>> wrote:
Okay I can try to refactor it, but I'm not 100% sure if I
got you right. Would the caching attribute
(last_applied_shadercomponent) still be used then?
I'm thinking last_applied_shadercomponent would be redundent and
could be removed.
Also do you mean by "get the last applied StateAttribute's
from the AttributeStack" to use the last_applied_attribute
member?
Yes, use last_applied_attribute instead
of last_applied_shadercomponent. The code associated with the
later could be completely removed from osg::State so would
simply it a little.
Simplifying code and providing greater extensibility sounds like
a good design change to me :-)
Robert.
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
* Copyright (C) 2010-10-21 VIRES Simulationstechnologie GmbH
*
* 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.
*/
/*
* mod: Holger Helmich 2010-10-21
*/
#include <osg/ShaderComposer>
#include <osg/Notify>
using namespace osg;
ShaderComposer::ShaderComposer()
{
OSG_INFO<<"ShaderComposer::ShaderComposer() "<<this<<std::endl;
}
ShaderComposer::ShaderComposer(const ShaderComposer& sa, const CopyOp& copyop):
Object(sa, copyop)
{
OSG_INFO<<"ShaderComposer::ShaderComposer(const ShaderComposer&, const
CopyOp& copyop) "<<this<<std::endl;
}
ShaderComposer::~ShaderComposer()
{
OSG_INFO<<"ShaderComposer::~ShaderComposer() "<<this<<std::endl;
}
void ShaderComposer::releaseGLObjects(osg::State* state)
{
_programMap.clear();
_shaderMainMap.clear();
}
osg::Program* ShaderComposer::getOrCreateProgram(const ShaderComponents&
shaderComponents)
{
ProgramMap::iterator itr = _programMap.find(shaderComponents);
if (itr != _programMap.end())
{
// OSG_NOTICE<<"ShaderComposer::getOrCreateProgram(..) using cached
Program"<<std::endl;
return itr->second.get();
}
// strip out vertex shaders
Shaders vertexShaders;
Shaders tessControlShaders;
Shaders tessEvaluationShaders;
Shaders geometryShaders;
Shaders fragmentShaders;
Shaders computeShaders;
OSG_INFO<<"ShaderComposer::getOrCreateProgram(shaderComponents.size()=="<<shaderComponents.size()<<std::endl;
for(ShaderComponents::const_iterator itr = shaderComponents.begin();
itr != shaderComponents.end();
++itr)
{
const ShaderComponent* sc = (*itr)->getShaderComponent();
for(unsigned int i=0; i<sc->getNumShaders(); ++i)
{
const Shader* shader = sc->getShader(i);
switch(shader->getType())
{
case(Shader::VERTEX):
vertexShaders.push_back(shader);
break;
case(Shader::TESSCONTROL):
tessControlShaders.push_back(shader);
break;
case(Shader::TESSEVALUATION):
tessEvaluationShaders.push_back(shader);
break;
case(Shader::GEOMETRY):
geometryShaders.push_back(shader);
break;
case(Shader::FRAGMENT):
fragmentShaders.push_back(shader);
break;
case(Shader::COMPUTE):
computeShaders.push_back(shader);
break;
case(Shader::UNDEFINED):
OSG_WARN<<"Warning:
ShaderCompose::getOrCreateProgam(ShaderComponts) encounterd invalid
Shader::Type."<<std::endl;
break;
}
}
}
osg::ref_ptr<osg::Program> program = new osg::Program;
if (!vertexShaders.empty())
{
addShaderToProgram(program.get(), vertexShaders);
}
if (!geometryShaders.empty())
{
addShaderToProgram(program.get(), geometryShaders);
}
if (!fragmentShaders.empty())
{
addShaderToProgram(program.get(), fragmentShaders);
}
if (!computeShaders.empty())
{
addShaderToProgram(program.get(), computeShaders);
}
// assign newly created program to map.
_programMap[shaderComponents] = program;
OSG_INFO<<"ShaderComposer::getOrCreateProgram(..) created new
Program"<<std::endl;
return program.get();
}
void ShaderComposer::addShaderToProgram(Program* program, const Shaders&
shaders)
{
ShaderMainMap::iterator itr = _shaderMainMap.find(shaders);
if (itr == _shaderMainMap.end())
{
// no vertex shader in map yet, need to compose a new main shader
osg::Shader* mainShader = composeMain(shaders);
_shaderMainMap[shaders] = mainShader;
program->addShader(mainShader);
}
else
{
program->addShader(itr->second.get());
}
for(Shaders::const_iterator itr = shaders.begin();
itr != shaders.end();
++itr)
{
Shader* shader = const_cast<Shader*>(*itr);
if (!(shader->getShaderSource().empty()) || shader->getShaderBinary())
{
program->addShader(shader);
}
}
}
osg::Shader* ShaderComposer::composeMain(const Shaders& shaders)
{
OSG_INFO<<"ShaderComposer::composeMain(Shaders)
shaders.size()=="<<shaders.size()<<std::endl;
// collect the shader type and the code injection from each of the
contributing shaders
Shader::Type type = Shader::UNDEFINED;
Shader::CodeInjectionMap codeInjectionMap;
for(Shaders::const_iterator itr = shaders.begin();
itr != shaders.end();
++itr)
{
const Shader* shader = *itr;
if (type == Shader::UNDEFINED)
{
type = shader->getType();
}
else if (type != shader->getType())
{
OSG_WARN<<"Warning:ShaderComposer::composeMain() mixing different
types of Shaders prohibited."<<std::endl;
continue;
}
const Shader::CodeInjectionMap& cim = shader->getCodeInjectionMap();
for(Shader::CodeInjectionMap::const_iterator citr = cim.begin();
citr != cim.end();
++citr)
{
codeInjectionMap.insert(*citr);
}
}
// collect together the different parts of the main shader
std::string before_main;
std::string in_main;
std::string after_main;
for(Shader::CodeInjectionMap::iterator citr = codeInjectionMap.begin();
citr != codeInjectionMap.end();
++citr)
{
float position = citr->first;
if (position<0.0) before_main += citr->second;
else if (position<=1.0) in_main += citr->second;
else after_main += citr->second;
}
// assembly the final main shader source
std::string full_source;
full_source += before_main;
full_source += std::string("void main(void)\n");
full_source += std::string("{\n");
full_source += in_main;
full_source += std::string("}\n");
full_source += after_main;
ref_ptr<Shader> mainShader = new Shader(type, full_source);
OSG_INFO<<"type =="<<type<<std::endl;
OSG_INFO<<"full_source == "<<std::endl<<full_source<<std::endl;
OSG_INFO<<"end of
ShaderComposer::composeMain(Shaders)"<<std::endl<<std::endl;
_shaderMainMap[shaders] = mainShader;
return mainShader.get();
}
/* -*-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 <sstream>
#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;
}
_currentActiveTextureUnit=0;
_currentClientActiveTextureUnit=0;
_currentVBO = 0;
_currentEBO = 0;
_currentPBO = 0;
_isSecondaryColorSupportResolved = false;
_isSecondaryColorSupported = false;
_isFogCoordSupportResolved = false;
_isFogCoordSupported = false;
_isVertexBufferObjectSupportResolved = false;
_isVertexBufferObjectSupported = 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;
_dynamicObjectCount = 0;
_glMaxTextureCoords = 1;
_glMaxTextureUnits = 1;
_maxTexturePoolSize = 0;
_maxBufferObjectPoolSize = 0;
_glBeginEndAdapter.setState(this);
_arrayDispatchers.setState(this);
_graphicsCostEstimator = new GraphicsCostEstimator;
_startTick = 0;
_gpuTick = 0;
_gpuTimestamp = 0;
_timestampBits = 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::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()
{
#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 0
// 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 Unfirom'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::Texture::getTextureObjectManager(getContextID())->setMaxTexturePoolSize(size);
OSG_INFO<<"osg::State::_maxTexturePoolSize="<<_maxTexturePoolSize<<std::endl;
}
void State::setMaxBufferObjectPoolSize(unsigned int size)
{
_maxBufferObjectPoolSize = size;
osg::GLBufferObjectManager::getGLBufferObjectManager(getContextID())->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());
}
// 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());
}
// 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());
applyAttributeList(_attributeMap,dstate->getAttributeList());
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);
}
}
// 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);
// go through all active StateAttribute's, applying where appropriate.
applyAttributeMap(_attributeMap);
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_attribute &&
as.last_applied_attribute->getShaderComponent())
{
shaderComponents.push_back(const_cast<osg::StateAttribute*>(as.last_applied_attribute));
}
}
_currentShaderCompositionProgram =
_shaderComposer->getOrCreateProgram(shaderComponents);
}
if (_currentShaderCompositionProgram)
{
Program::PerContextProgram* pcp =
_currentShaderCompositionProgram->getPCP(_contextID);
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","attribute vec4 ");
setUpVertexAttribAlias(_normalAlias, slot++,
"gl_Normal","osg_Normal","attribute vec3 ");
setUpVertexAttribAlias(_colorAlias, slot++,
"gl_Color","osg_Color","attribute 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(), "attribute vec4 ");
}
setUpVertexAttribAlias(_secondaryColorAlias, slot++,
"gl_SecondaryColor","osg_SecondaryColor","attribute vec4 ");
setUpVertexAttribAlias(_fogCoordAlias, slot++,
"gl_FogCoord","osg_FogCoord","attribute float ");
}
else
{
setUpVertexAttribAlias(_vertexAlias,0,
"gl_Vertex","osg_Vertex","attribute vec4 ");
setUpVertexAttribAlias(_normalAlias, 2,
"gl_Normal","osg_Normal","attribute vec3 ");
setUpVertexAttribAlias(_colorAlias, 3,
"gl_Color","osg_Color","attribute vec4 ");
setUpVertexAttribAlias(_secondaryColorAlias, 4,
"gl_SecondaryColor","osg_SecondaryColor","attribute vec4 ");
setUpVertexAttribAlias(_fogCoordAlias, 5,
"gl_FogCoord","osg_FogCoord","attribute 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(), "attribute vec4 ");
}
}
}
void State::disableAllVertexArrays()
{
disableVertexPointer();
disableTexCoordPointersAboveAndIncluding(0);
disableVertexAttribPointersAboveAndIncluding(0);
disableColorPointer();
disableFogCoordPointer();
disableNormalPointer();
disableSecondaryColorPointer();
}
void State::dirtyAllVertexArrays()
{
dirtyVertexPointer();
dirtyTexCoordPointersAboveAndIncluding(0);
dirtyVertexAttribPointersAboveAndIncluding(0);
dirtyColorPointer();
dirtyFogCoordPointer();
dirtyNormalPointer();
dirtySecondaryColorPointer();
}
void State::setInterleavedArrays( GLenum format, GLsizei stride, const GLvoid*
pointer)
{
disableAllVertexArrays();
#if defined(OSG_GL_VERTEX_ARRAY_FUNCS_AVAILABLE) &&
!defined(OSG_GLES1_AVAILABLE)
glInterleavedArrays( format, stride, pointer);
#else
OSG_NOTICE<<"Warning: State::setInterleavedArrays(..) not
implemented."<<std::endl;
#endif
// the crude way, assume that all arrays have been effected so dirty them
and
// disable them...
dirtyAllVertexArrays();
}
void State::initializeExtensionProcs()
{
if (_extensionProcsInitialized) return;
_glExtensions = new GLExtensions(_contextID);
GLExtensions::Set(_contextID, _glExtensions.get());
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)
{
glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS,&_glMaxTextureUnits);
if(OSG_GLES2_FEATURES)
_glMaxTextureCoords = _glMaxTextureUnits;
else
glGetIntegerv(GL_MAX_TEXTURE_COORDS,&_glMaxTextureCoords);
}
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);
}
}
bool State::setClientActiveTextureUnit( unsigned int unit )
{
if (unit!=_currentClientActiveTextureUnit)
{
if (_glClientActiveTexture && unit < (unsigned int)_glMaxTextureCoords)
{
_glClientActiveTexture(GL_TEXTURE0+unit);
_currentClientActiveTextureUnit = unit;
}
else
{
return unit==0;
}
}
return true;
}
void State::setFogCoordPointer(GLenum type, GLsizei stride, const GLvoid *ptr,
GLboolean normalized)
{
#ifdef OSG_GL_VERTEX_ARRAY_FUNCS_AVAILABLE
if (_useVertexAttributeAliasing)
{
setVertexAttribPointer(_fogCoordAlias._location, 1, type, normalized,
stride, ptr);
}
else
{
if (_glFogCoordPointer)
{
if (!_fogArray._enabled || _fogArray._dirty)
{
_fogArray._enabled = true;
glEnableClientState(GL_FOG_COORDINATE_ARRAY);
}
//if (_fogArray._pointer!=ptr || _fogArray._dirty)
{
_fogArray._pointer=ptr;
_glFogCoordPointer( type, stride, ptr );
}
_fogArray._lazy_disable = false;
_fogArray._dirty = false;
}
}
#else
setVertexAttribPointer(_fogCoordAlias._location, 1, type, normalized,
stride, ptr);
#endif
}
void State::setSecondaryColorPointer( GLint size, GLenum type,
GLsizei stride, const GLvoid *ptr,
GLboolean normalized )
{
#ifdef OSG_GL_VERTEX_ARRAY_FUNCS_AVAILABLE
if (_useVertexAttributeAliasing)
{
setVertexAttribPointer(_secondaryColorAlias._location, size, type,
normalized, stride, ptr);
}
else
{
if (_glSecondaryColorPointer)
{
if (!_secondaryColorArray._enabled || _secondaryColorArray._dirty)
{
_secondaryColorArray._enabled = true;
glEnableClientState(GL_SECONDARY_COLOR_ARRAY);
}
//if (_secondaryColorArray._pointer!=ptr ||
_secondaryColorArray._dirty)
{
_secondaryColorArray._pointer=ptr;
_glSecondaryColorPointer( size, type, stride, ptr );
}
_secondaryColorArray._lazy_disable = false;
_secondaryColorArray._dirty = false;
_secondaryColorArray._normalized = normalized;
}
}
#else
setVertexAttribPointer(_secondaryColorAlias._location, size, type,
normalized, stride, ptr);
#endif
}
/** wrapper around
glEnableVertexAttribArrayARB(index);glVertexAttribPointerARB(..);
* note, only updates values that change.*/
void State::setVertexAttribPointer( unsigned int index,
GLint size, GLenum type, GLboolean
normalized,
GLsizei stride, const GLvoid *ptr )
{
if (_glVertexAttribPointer)
{
//
OSG_NOTICE<<"State::setVertexAttribPointer("<<index<<",...)"<<std::endl;
if ( index >= _vertexAttribArrayList.size())
_vertexAttribArrayList.resize(index+1);
EnabledArrayPair& eap = _vertexAttribArrayList[index];
if (!eap._enabled || eap._dirty)
{
eap._enabled = true;
// OSG_NOTICE<<" _glEnableVertexAttribArray( "<<index<<"
)"<<std::endl;
_glEnableVertexAttribArray( index );
}
//if (eap._pointer != ptr || eap._normalized!=normalized || eap._dirty)
{
// OSG_NOTICE<<" _glVertexAttribPointer( "<<index<<"
)"<<std::endl;
_glVertexAttribPointer( index, size, type, normalized, stride, ptr
);
eap._pointer = ptr;
eap._normalized = normalized;
}
eap._lazy_disable = false;
eap._dirty = false;
}
}
/** wrapper around
glEnableVertexAttribArrayARB(index);glVertexAttribIPointer(..);
* note, only updates values that change.*/
void State::setVertexAttribIPointer( unsigned int index,
GLint size, GLenum type,
GLsizei stride, const GLvoid *ptr )
{
if (_glVertexAttribIPointer)
{
//
OSG_NOTICE<<"State::setVertexAttribIPointer("<<index<<",...)"<<std::endl;
if ( index >= _vertexAttribArrayList.size())
_vertexAttribArrayList.resize(index+1);
EnabledArrayPair& eap = _vertexAttribArrayList[index];
if (!eap._enabled || eap._dirty)
{
eap._enabled = true;
// OSG_NOTICE<<" _glEnableVertexAttribArray( "<<index<<"
)"<<std::endl;
_glEnableVertexAttribArray( index );
}
//if (eap._pointer != ptr || eap._dirty)
{
// OSG_NOTICE<<" _glVertexAttribIPointer( "<<index<<"
)"<<std::endl;
_glVertexAttribIPointer( index, size, type, stride, ptr );
eap._pointer = ptr;
eap._normalized = false;
}
eap._lazy_disable = false;
eap._dirty = false;
}
}
/** wrapper around
glEnableVertexAttribArrayARB(index);glVertexAttribLPointer(..);
* note, only updates values that change.*/
void State::setVertexAttribLPointer( unsigned int index,
GLint size, GLenum type,
GLsizei stride, const GLvoid *ptr )
{
if (_glVertexAttribLPointer)
{
//
OSG_NOTICE<<"State::setVertexAttribLPointer("<<index<<",...)"<<std::endl;
if ( index >= _vertexAttribArrayList.size())
_vertexAttribArrayList.resize(index+1);
EnabledArrayPair& eap = _vertexAttribArrayList[index];
if (!eap._enabled || eap._dirty)
{
eap._enabled = true;
// OSG_NOTICE<<" _glEnableVertexAttribArray( "<<index<<"
)"<<std::endl;
_glEnableVertexAttribArray( index );
}
//if (eap._pointer != ptr || eap._dirty)
{
// OSG_NOTICE<<" _glVertexAttribLPointer( "<<index<<"
)"<<std::endl;
_glVertexAttribLPointer( index, size, type, stride, ptr );
eap._pointer = ptr;
eap._normalized = false;
}
eap._lazy_disable = false;
eap._dirty = false;
}
}
/** wrapper around DisableVertexAttribArrayARB(index);
* note, only updates values that change.*/
void State::disableVertexAttribPointer( unsigned int index )
{
if (_glDisableVertexAttribArray)
{
if ( index >= _vertexAttribArrayList.size())
_vertexAttribArrayList.resize(index+1);
EnabledArrayPair& eap = _vertexAttribArrayList[index];
if (eap._enabled || eap._dirty)
{
eap._enabled = false;
eap._dirty = false;
// OSG_NOTICE<<" _glDisableVertexAttribArray( "<<index<<"
)"<<std::endl;
_glDisableVertexAttribArray( index );
}
}
}
void State::disableVertexAttribPointersAboveAndIncluding( unsigned int index )
{
if (_glDisableVertexAttribArray)
{
while (index<_vertexAttribArrayList.size())
{
EnabledArrayPair& eap = _vertexAttribArrayList[index];
if (eap._enabled || eap._dirty)
{
eap._enabled = false;
eap._dirty = false;
// OSG_NOTICE<<"
State::disableVertexAttribPointersAboveAndIncluding():
_glDisableVertexAttribArray( "<<index<<" )"<<std::endl;
_glDisableVertexAttribArray( index );
}
++index;
}
}
}
void State::lazyDisablingOfVertexAttributes()
{
// OSG_NOTICE<<"lazyDisablingOfVertexAttributes()"<<std::endl;
if (!_useVertexAttributeAliasing)
{
_vertexArray._lazy_disable = true;
_normalArray._lazy_disable = true;
_colorArray._lazy_disable = true;
_secondaryColorArray._lazy_disable = true;
_fogArray._lazy_disable = true;
for(EnabledTexCoordArrayList::iterator itr = _texCoordArrayList.begin();
itr != _texCoordArrayList.end();
++itr)
{
itr->_lazy_disable = true;
}
}
for(EnabledVertexAttribArrayList::iterator itr =
_vertexAttribArrayList.begin();
itr != _vertexAttribArrayList.end();
++itr)
{
itr->_lazy_disable = true;
}
}
void State::applyDisablingOfVertexAttributes()
{
//OSG_NOTICE<<"start of applyDisablingOfVertexAttributes()"<<std::endl;
if (!_useVertexAttributeAliasing)
{
if (_vertexArray._lazy_disable) disableVertexPointer();
if (_normalArray._lazy_disable) disableNormalPointer();
if (_colorArray._lazy_disable) disableColorPointer();
if (_secondaryColorArray._lazy_disable) disableSecondaryColorPointer();
if (_fogArray._lazy_disable) disableFogCoordPointer();
for(unsigned int i=0; i<_texCoordArrayList.size(); ++i)
{
if (_texCoordArrayList[i]._lazy_disable) disableTexCoordPointer(i);
}
}
for(unsigned int i=0; i<_vertexAttribArrayList.size(); ++i)
{
if (_vertexAttribArrayList[i]._lazy_disable)
disableVertexAttribPointer(i);
}
// OSG_NOTICE<<"end of applyDisablingOfVertexAttributes()"<<std::endl;
}
bool State::computeSecondaryColorSupported() const
{
_isSecondaryColorSupportResolved = true;
_isSecondaryColorSupported =
osg::isGLExtensionSupported(_contextID,"GL_EXT_secondary_color");
return _isSecondaryColorSupported;
}
bool State::computeFogCoordSupported() const
{
_isFogCoordSupportResolved = true;
_isFogCoordSupported =
osg::isGLExtensionSupported(_contextID,"GL_EXT_fog_coord");
return _isFogCoordSupported;
}
bool State::computeVertexBufferObjectSupported() const
{
_isVertexBufferObjectSupportResolved = true;
_isVertexBufferObjectSupported = OSG_GLES2_FEATURES || OSG_GL3_FEATURES ||
osg::isGLExtensionSupported(_contextID,"GL_ARB_vertex_buffer_object");
return _isVertexBufferObjectSupported;
}
bool State::checkGLErrors(const char* str) 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<<"'";
}
else
{
OSG_NOTIFY(WARN)<<"Warning: detected OpenGL error number 0x" <<
std::hex << errorNo << std::dec;
}
if (str)
{
OSG_NOTIFY(WARN)<<" at "<<str<< std::endl;
}
else
{
OSG_NOTIFY(WARN)<<" in osg::State."<< 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& declarationPrefix)
{
if (replace(source, originalStr, newStr))
{
source.insert(declPos, 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;
// 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 )
{
// 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;
}
if (_useVertexAttributeAliasing)
{
State_Utils::replaceAndInsertDeclaration(source, declPos,
_vertexAlias._glName, _vertexAlias._osgName,
_vertexAlias._declaration);
State_Utils::replaceAndInsertDeclaration(source, declPos,
_normalAlias._glName, _normalAlias._osgName,
_normalAlias._declaration);
State_Utils::replaceAndInsertDeclaration(source, declPos,
_colorAlias._glName, _colorAlias._osgName,
_colorAlias._declaration);
State_Utils::replaceAndInsertDeclaration(source, declPos,
_secondaryColorAlias._glName, _secondaryColorAlias._osgName,
_secondaryColorAlias._declaration);
State_Utils::replaceAndInsertDeclaration(source, declPos,
_fogCoordAlias._glName, _fogCoordAlias._osgName,
_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, texCoordAlias._declaration);
}
}
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 ");
}
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;
}
}
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