FGFS-4.1/OpenSceneGraph
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Implementated new dirty buffer mechansim for BufferObjects to make it more efficient

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Robert Osfield
2007-04-30 12:18:27 +00:00
parent efb52dfab9
commit d625a5e114
11 changed files with 104 additions and 37 deletions
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19
include/osg/BufferObject
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@@ -122,9 +122,18 @@ class OSG_EXPORT BufferObject : public Object
extensions->glBindBuffer(_target,0);
}
inline void dirty() { _compiledList.setAllElementsTo(0); }
bool isDirty(unsigned int contextID) const { return _compiledList[contextID]==0; }
virtual bool needsCompile(unsigned int contextID) const = 0;
virtual void compileBuffer(State& state) const = 0;
inline void compileBuffer(unsigned int contextID, State& state) const
{
if (isDirty(contextID)) compileBufferImplementation(state);
}
virtual void compileBufferImplementation(State& state) const = 0;
void releaseBuffer(State* state) const;
@@ -215,8 +224,10 @@ class OSG_EXPORT BufferObject : public Object
virtual ~BufferObject();
typedef osg::buffered_value<GLuint> GLObjectList;
typedef osg::buffered_value<unsigned int> CompiledList;
mutable GLObjectList _bufferObjectList;
mutable CompiledList _compiledList;
GLenum _target;
GLenum _usage;
@@ -248,7 +259,7 @@ class OSG_EXPORT VertexBufferObject : public BufferObject
virtual bool needsCompile(unsigned int contextID) const;
virtual void compileBuffer(State& state) const;
virtual void compileBufferImplementation(State& state) const;
protected:
@@ -282,7 +293,7 @@ class OSG_EXPORT ElementsBufferObject : public BufferObject
virtual bool needsCompile(unsigned int contextID) const;
virtual void compileBuffer(State& state) const;
virtual void compileBufferImplementation(State& state) const;
protected:
@@ -314,7 +325,7 @@ class OSG_EXPORT PixelBufferObject : public BufferObject
virtual bool needsCompile(unsigned int contextID) const;
virtual void compileBuffer(State& state) const;
virtual void compileBufferImplementation(State& state) const;
protected: