Hi Robert, I have found a minor bug with image scaling. I have a texture that is 1024x768 that is being resized to 1024x1024 for a Texture2D. Texture::applyTexImage2D_load() detects the need to resize and tries to do so through gluScaleImage(), which is implemented in src/osg/glu/libutil/mipmap.cpp.
All that works great for most of my images, but this image is greyscale with alpha. GL spec deprecates GL_LUMINANCE_ALPHA and requires use of GL_RG for these images types. But the code in gluScaleImage() does not respect GL_RG (though it supports many other formats). This patch treats GL_RG identically to GL_LUMINANCE; a simple 2 element format. After this patch, my image shows up fine. Mipmap.cpp supports many other similar types, like GL_RED. Risk of this change seems pretty low. PR is up at https://github.com/openscenegraph/OpenSceneGraph/pull/566 Thanks, - Dan _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
