FGFS-4.1/OpenSceneGraph
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Added new virtual reseveElements, setElement, getElment and addElement methods to DrawElements

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to make is easier to write code that can work on DrawElementUByte, UShort or UInt.

Changed the osgTerrain::GeometryTechnique so that it automatically chooses 
the use of DrawElementUShort or DrawElementsUInt accordining to the size of the tile.
This commit is contained in:
Robert Osfield
2009-03-25 11:17:21 +00:00
parent 36b3907d79
commit 20ad246896
4 changed files with 112 additions and 43 deletions
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21
include/osg/PrimitiveSet
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@@ -449,6 +449,12 @@ class DrawElements : public PrimitiveSet
{
if (_ebo.valid()) _ebo->releaseGLObjects(state);
}
virtual void reserveElements(unsigned int numIndices) = 0;
virtual void setElement(unsigned int, unsigned int) = 0;
virtual unsigned int getElement(unsigned int) = 0;
virtual void addElement(unsigned int) = 0;
protected:
@@ -526,6 +532,11 @@ class OSG_EXPORT DrawElementsUByte : public DrawElements, public VectorGLubyte
_rangeModifiedCount = _modifiedCount;
}
virtual void reserveElements(unsigned int numIndices) { reserve(numIndices); }
virtual void setElement(unsigned int i, unsigned int v) { (*this)[i] = v; }
virtual unsigned int getElement(unsigned int i) { return (*this)[i]; }
virtual void addElement(unsigned int v) { push_back(GLubyte(v)); }
protected:
virtual ~DrawElementsUByte();
@@ -601,6 +612,11 @@ class OSG_EXPORT DrawElementsUShort : public DrawElements, public VectorGLushort
_rangeModifiedCount = _modifiedCount;
}
virtual void reserveElements(unsigned int numIndices) { reserve(numIndices); }
virtual void setElement(unsigned int i, unsigned int v) { (*this)[i] = v; }
virtual unsigned int getElement(unsigned int i) { return (*this)[i]; }
virtual void addElement(unsigned int v) { push_back(GLushort(v)); }
protected:
virtual ~DrawElementsUShort();
@@ -676,6 +692,11 @@ class OSG_EXPORT DrawElementsUInt : public DrawElements, public VectorGLuint
_rangeModifiedCount = _modifiedCount;
}
virtual void reserveElements(unsigned int numIndices) { reserve(numIndices); }
virtual void setElement(unsigned int i, unsigned int v) { (*this)[i] = v; }
virtual unsigned int getElement(unsigned int i) { return (*this)[i]; }
virtual void addElement(unsigned int v) { push_back(GLuint(v)); }
protected:
virtual ~DrawElementsUInt();