On 24 February 2017 at 14:30, Werner Modenbach <[email protected]> wrote: > that's great. It works with the shader you suggested. > Strange is, that just using vertex color doesn't work. It seems alpha is set > to transparent (0). > Also a texture is set but only alpha has a meaning. Texture color is black. > That looks odd to me.
If you build the OSG against the GL3 core profile it maps the texture format to GL_RED rather than GL_ALPHA as the later is no longer supported. The graphics hardware doesn't expand GL_RED in the same way as GL_ALPHA so it can cause problems. It's a bit of pain having GL pull the rug from GL_ALPHA as it has a particularly useful mapping. Potentially one could use texture swizzle to get round this but it's not support on all GL versions. Robert. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
