148 lines
4.3 KiB
C++
148 lines
4.3 KiB
C++
/* -*-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.
|
|
*/
|
|
|
|
#ifndef OSG_GRAPHICSTHREAD
|
|
#define OSG_GRAPHICSTHREAD 1
|
|
|
|
#include <osg/OperationThread>
|
|
#include <osg/State>
|
|
|
|
namespace osg {
|
|
|
|
class GraphicsContext;
|
|
|
|
/** GraphicsThread is a helper class for running OpenGL GraphicsOperation within a single thread assigned to a specific GraphicsContext.*/
|
|
class OSG_EXPORT GraphicsThread : public osg::OperationThread
|
|
{
|
|
public:
|
|
|
|
GraphicsThread();
|
|
|
|
/** Run does the graphics thread run loop.*/
|
|
virtual void run();
|
|
};
|
|
|
|
struct OSG_EXPORT GraphicsOperation : public Operation
|
|
{
|
|
GraphicsOperation(const std::string& name, bool keep):
|
|
Operation(name,keep) {}
|
|
|
|
/** Override the standard Operation operator and dynamic cast object to a GraphicsContext,
|
|
* on success call operation()(GraphicsContext*).*/
|
|
virtual void operator () (Object* object);
|
|
|
|
virtual void operator () (GraphicsContext* context) = 0;
|
|
|
|
/** Resize any per context GLObject buffers to specified size. */
|
|
virtual void resizeGLObjectBuffers(unsigned int /*maxSize*/) {}
|
|
|
|
/** If State is non-zero, this function releases any associated OpenGL objects for
|
|
* the specified graphics context. Otherwise, releases OpenGL objects
|
|
* for all graphics contexts. */
|
|
virtual void releaseGLObjects(osg::State* = 0) const {}
|
|
};
|
|
|
|
|
|
/** SwapBufferOperation calls swap buffers on the GraphicsContext.*/
|
|
struct OSG_EXPORT SwapBuffersOperation : public GraphicsOperation
|
|
{
|
|
SwapBuffersOperation():
|
|
osg::Referenced(true),
|
|
GraphicsOperation("SwapBuffers",true) {}
|
|
|
|
virtual void operator () (GraphicsContext* context);
|
|
};
|
|
|
|
/** BarrierOperation allows one to synchronize multiple GraphicsThreads with each other.*/
|
|
struct OSG_EXPORT BarrierOperation : public Operation, public OpenThreads::Barrier
|
|
{
|
|
enum PreBlockOp
|
|
{
|
|
NO_OPERATION,
|
|
GL_FLUSH,
|
|
GL_FINISH
|
|
};
|
|
|
|
BarrierOperation(int numThreads, PreBlockOp op=NO_OPERATION, bool keep=true):
|
|
osg::Referenced(true),
|
|
Operation("Barrier", keep),
|
|
OpenThreads::Barrier(numThreads),
|
|
_preBlockOp(op) {}
|
|
|
|
virtual void release();
|
|
|
|
virtual void operator () (Object* object);
|
|
|
|
PreBlockOp _preBlockOp;
|
|
};
|
|
|
|
/** ReleaseContext_Block_MakeCurrentOperation releases the context for another thread to acquire,
|
|
* then blocks waiting for context to be released, once the block is release the context is re-acquired.*/
|
|
struct OSG_EXPORT ReleaseContext_Block_MakeCurrentOperation : public GraphicsOperation, public RefBlock
|
|
{
|
|
ReleaseContext_Block_MakeCurrentOperation():
|
|
osg::Referenced(true),
|
|
GraphicsOperation("ReleaseContext_Block_MakeCurrent", false) {}
|
|
|
|
virtual void release();
|
|
|
|
virtual void operator () (GraphicsContext* context);
|
|
};
|
|
|
|
struct OSG_EXPORT BlockAndFlushOperation : public GraphicsOperation, public OpenThreads::Block
|
|
{
|
|
BlockAndFlushOperation();
|
|
|
|
virtual void release();
|
|
|
|
virtual void operator () (GraphicsContext*);
|
|
};
|
|
|
|
|
|
struct OSG_EXPORT FlushDeletedGLObjectsOperation : public GraphicsOperation
|
|
{
|
|
FlushDeletedGLObjectsOperation(double availableTime, bool keep=false);
|
|
|
|
virtual void operator () (GraphicsContext*);
|
|
|
|
double _availableTime;
|
|
};
|
|
|
|
class OSG_EXPORT RunOperations : public osg::GraphicsOperation
|
|
{
|
|
public:
|
|
|
|
RunOperations():
|
|
osg::GraphicsOperation("RunOperation",true) {}
|
|
|
|
virtual void operator () (osg::GraphicsContext* context);
|
|
|
|
};
|
|
|
|
class OSG_EXPORT EndOfDynamicDrawBlock : public OpenThreads::BlockCount, public osg::State::DynamicObjectRenderingCompletedCallback
|
|
{
|
|
public:
|
|
|
|
EndOfDynamicDrawBlock(unsigned int);
|
|
|
|
void completed(osg::State* state);
|
|
|
|
protected:
|
|
|
|
~EndOfDynamicDrawBlock() {}
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|