FGFS-4.1/OpenSceneGraph
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Various updates to support the new GraphicsThread class.

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This commit is contained in:
Robert Osfield
2005-08-18 20:17:51 +00:00
parent 717a6dcf14
commit 51faa7e43a
9 changed files with 82 additions and 100 deletions
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61
include/osg/GraphicsContext
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@@ -15,10 +15,7 @@
#define OSG_GRAPHICSCONTEXT 1
#include <osg/State>
#include <OpenThreads/Thread>
#include <list>
#include <osg/GraphicsThread>
namespace osg {
@@ -144,57 +141,44 @@ class OSG_EXPORT GraphicsContext : public Referenced
/** Return true if the graphics context has been realised and is ready to use.*/
virtual bool isRealized() const = 0;
/** Release the graphics context.*/
virtual void release() = 0;
/** close the graphics context.*/
virtual void close() = 0;
/** Make this graphics context current.*/
virtual void makeCurrent() = 0;
/** Make this graphics context current.
* Implementated by first aquiring a lock of the GraphicsContext mutex, and then doing a call to makeCurrentImplementation(). */
void makeCurrent();
/** Make this graphics context current with specified read context.*/
virtual void makeContextCurrent(GraphicsContext* readContext) = 0;
/** Make this graphics context current with specified read context.
* Implementated by first aquiring a lock of the GraphicsContext mutex, and then doing a call to makeContextCurrentImplementation(). */
void makeContextCurrent(GraphicsContext* readContext);
virtual void releaseContext() = 0;
/** Release the graphics context by unlocking the GraphicsContext mutex.*/
void releaseContext();
/** Return true if the current thread has this OpenGL graphics context.*/
inline bool isCurrent() const { return _threadOfLastMakeCurrent == OpenThreads::Thread::CurrentThread(); }
/** Make this graphics context current.*/
virtual void makeCurrentImplementation() = 0;
/** Make this graphics context current with specified read context.*/
virtual void makeContextCurrentImplementation(GraphicsContext* readContext) = 0;
/** Bind the graphics context to associated texture.*/
virtual void bindPBufferToTexture(GLenum buffer) = 0;
/** swap the front and back buffers.*/
virtual void swapBuffers() = 0;
public:
struct GraphicsOperation : public Referenced
{
virtual void operator () (GraphicsContext& context) {}
};
class GraphicsThread : public Referenced, OpenThreads::Thread
{
public:
GraphicsThread() {}
typedef std::list< ref_ptr<GraphicsOperation> > OperationList;
void add(GraphicsOperation* operation);
virtual void run();
protected:
virtual ~GraphicsThread() {}
OpenThreads::Mutex _runListMutex;
OperationList _operations;
};
/** Assign a graphics thread to the graphics context, so that the thread handles all OpenGL operations.*/
void setGraphicsThread(GraphicsThread* gt) { _graphicsThread = gt; }
/** Get the graphics thread assigned the graphics context.*/
GraphicsThread* getGraphicsThread() { return _graphicsThread.get(); }
/** Get the const graphics thread assigned the graphics context.*/
const GraphicsThread* getGraphicsThread() const { return _graphicsThread.get(); }
protected:
@@ -205,6 +189,7 @@ class OSG_EXPORT GraphicsContext : public Referenced
ref_ptr<Traits> _traits;
ref_ptr<State> _state;
OpenThreads::Mutex _mutex;
OpenThreads::Thread* _threadOfLastMakeCurrent;
ref_ptr<GraphicsThread> _graphicsThread;