161246d864
This approach unifies much of the code handling the clean up of OpenGL graphics data, avoids lots of local mutexes and static variables that were previously required, and enables the clean up scheme to be easily extended by users providing their own GraphicsObjectManager subclasses. git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@15130 16af8721-9629-0410-8352-f15c8da7e697
136 lines
4.2 KiB
C++
136 lines
4.2 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2010 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*
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* Texture2DMultisample codes Copyright (C) 2010 Marcin Hajder
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* Thanks to to my company http://www.ai.com.pl for allowing me free this work.
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*/
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#include <osg/GLExtensions>
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#include <osg/Texture2DMultisample>
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#include <osg/State>
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#include <osg/Notify>
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using namespace osg;
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Texture2DMultisample::Texture2DMultisample():
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_textureWidth(0),
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_textureHeight(0),
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_numSamples(1),
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_fixedsamplelocations(GL_FALSE)
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{
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}
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Texture2DMultisample::Texture2DMultisample(GLsizei numSamples, GLboolean fixedsamplelocations):
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_textureWidth(0),
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_textureHeight(0),
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_numSamples(numSamples),
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_fixedsamplelocations(fixedsamplelocations)
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{
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}
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Texture2DMultisample::Texture2DMultisample(const Texture2DMultisample& text,const CopyOp& copyop):
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Texture(text,copyop),
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_textureWidth(text._textureWidth),
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_textureHeight(text._textureHeight),
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_numSamples(text._numSamples),
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_fixedsamplelocations(text._fixedsamplelocations)
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{
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}
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Texture2DMultisample::~Texture2DMultisample()
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{
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}
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int Texture2DMultisample::compare(const StateAttribute& sa) const
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{
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// check the types are equal and then create the rhs variable
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// used by the COMPARE_StateAttribute_Parameter macros below.
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COMPARE_StateAttribute_Types(Texture2DMultisample,sa)
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int result = compareTexture(rhs);
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if (result!=0) return result;
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// compare each parameter in turn against the rhs.
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if (_textureWidth != 0 && rhs._textureWidth != 0)
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{
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COMPARE_StateAttribute_Parameter(_textureWidth)
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}
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if (_textureHeight != 0 && rhs._textureHeight != 0)
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{
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COMPARE_StateAttribute_Parameter(_textureHeight)
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}
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if (_numSamples != 0 && rhs._numSamples != 0)
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{
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COMPARE_StateAttribute_Parameter(_numSamples)
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}
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if (_fixedsamplelocations != 0 && rhs._fixedsamplelocations != 0)
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{
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COMPARE_StateAttribute_Parameter(_fixedsamplelocations)
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}
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return 0; // passed all the above comparison macros, must be equal.
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}
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void Texture2DMultisample::apply(State& state) const
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{
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// current OpenGL context.
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const unsigned int contextID = state.getContextID();
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const GLExtensions* extensions = state.get<GLExtensions>();
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if (!extensions->isTextureMultisampledSupported)
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{
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OSG_INFO<<"Texture2DMultisample not supported."<<std::endl;
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return;
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}
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// get the texture object for the current contextID.
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TextureObject* textureObject = getTextureObject(contextID);
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if (textureObject)
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{
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textureObject->bind();
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}
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else if ( (_textureWidth!=0) && (_textureHeight!=0) && (_numSamples!=0) )
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{
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textureObject = generateAndAssignTextureObject(
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contextID,
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getTextureTarget(),
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1,
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_internalFormat,
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_textureWidth,
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_textureHeight,
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1,
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_borderWidth);
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textureObject->bind();
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extensions->glTexImage2DMultisample( getTextureTarget(),
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_numSamples,
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_internalFormat,
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_textureWidth,
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_textureHeight,
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_fixedsamplelocations );
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}
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else
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{
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glBindTexture( getTextureTarget(), 0 );
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}
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}
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void Texture2DMultisample::computeInternalFormat() const
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{
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computeInternalFormatType();
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}
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