Hello,
Some android phones have no support for OES_element_index_uint extension that
is required if glDrawElements is to be called with GL_UNSIGNED_INT for element
type.
In OSG 3.4, osgText::Text( ::_quadIndices) uses DrawElementsUInt that will fail
on these devices and no text will appear - tested on Samsung Galaxy Trend 2
SM-G313HN.
When DrawElementsUInt is replaced with DrawElementsUShort it works, although
I'm not sure if this can cause other problems with some fonts.
Fix:
- In include\osgText\Text, line 316:
replace: "osg::ref_ptr< osg::DrawElementsUInt > _quadIndices;"
with: "osg::ref_ptr< osg::DrawElementsUShort > _quadIndices;"
- In src\osgText\Text.cpp, line 2094:
replace: "_quadIndices = new DrawElementsUInt(PrimitiveSet::TRIANGLES);"
with: "_quadIndices = new
DrawElementsUShort(PrimitiveSet::TRIANGLES);"
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=66417#66417
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