FGFS-4.1/OpenSceneGraph
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Changed the return types of makeCurrent to bool, and added a bool GraphicsContext::releaseContext method

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along with implementations in osgViewer.
This commit is contained in:
Robert Osfield
2007-01-08 19:29:59 +00:00
parent 4a5eda6522
commit 16d1c00a3d
18 changed files with 221 additions and 126 deletions
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25
include/osg/GraphicsContext
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@@ -219,15 +219,18 @@ class OSG_EXPORT GraphicsContext : public Referenced
/** Make this graphics context current.
* Implementated by first aquiring a lock of the GraphicsContext mutex, and then doing a call to makeCurrentImplementation(). */
void makeCurrent();
* Implementated by calling makeCurrentImplementation().
* Returns true on success. */
bool makeCurrent();
/** 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);
* Implementated by calling makeContextCurrentImplementation().
* Returns true on success. */
bool makeContextCurrent(GraphicsContext* readContext);
/** Release the graphics context by unlocking the GraphicsContext mutex.*/
void releaseContext();
/** Release the graphics context.
* Returns true on success. */
bool releaseContext();
/** Return true if the current thread has this OpenGL graphics context.*/
inline bool isCurrent() const { return _threadOfLastMakeCurrent == OpenThreads::Thread::CurrentThread(); }
@@ -264,11 +267,14 @@ class OSG_EXPORT GraphicsContext : public Referenced
/** Make this graphics context current implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual void makeCurrentImplementation() = 0;
virtual bool makeCurrentImplementation() = 0;
/** Make this graphics context current with specified read context implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual void makeContextCurrentImplementation(GraphicsContext* readContext) = 0;
virtual bool makeContextCurrentImplementation(GraphicsContext* readContext) = 0;
/** Release the graphics context implementation.*/
virtual bool releaseContextImplementation() = 0;
/** Pure virtual, Bind the graphics context to associated texture implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
@@ -278,6 +284,8 @@ class OSG_EXPORT GraphicsContext : public Referenced
* Pure virtual - must be implemented by Concrate implementations of GraphicsContext. */
virtual void swapBuffersImplementation() = 0;
/** resized method should be called when the underlying window has been resized and the GraphicsWindow and associated Cameras must
be updated to keep in sync with the new size. */
void resized(int x, int y, int width, int height)
@@ -332,7 +340,6 @@ class OSG_EXPORT GraphicsContext : public Referenced
Vec4 _clearColor;
GLbitfield _clearMask;
OpenThreads::Mutex _mutex;
OpenThreads::Thread* _threadOfLastMakeCurrent;
typedef std::list< ref_ptr<GraphicsOperation> > OperationQueue;