view parallel/persp/etc. (start)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33687 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
RGBA instead of ALPHA for textures

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33688 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e