Hello Gerrit,
short question about the meaning of the following Geometry core
attribut: useAttribCalls
It has the same documentation string as useVAO attribute: ' Flag to
activate caching the geometry inside a VAO.'
It is used in the CSM examples but I only found one reference in
Geometry::drawPrimitives (OSGGeometryGLHandler.inl)
// Quick solution must be cleaned up.
if(_sfUseAttribCalls.getValue() == true)
{
usesShader = true;
}
#ifdef OSG_OGL_VERTEXATTRIB_FUNCS
else
{
if(pEnv->getActiveShader() != 0)
{
if((pEnv->getRequiredOGLFeature() &
HardwareContext::HasAttribAliasing) == 0x0000)
{
usesShader = true;
}
else
{
usesShader = (pEnv->getWindow()->getOGLFeatures() &
HardwareContext::HasAttribAliasing ) !=
0x0000;
}
}
}
#endif
which does not help much.
Can you give a quick idea behind this attribute and its use pattern?
Best,
Johannes
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