Hi all, I have solved the issues with the complex textures. In the end, I had to write a new image plugin that loads files with OpenGL texure data (much like the KTX format).
There seem to be some issues with OSG's texture loading code, more specifically, with how internalFormat and format are computed. In my case, I needed an unsigned 8-bit integer texture. This corresponds to internalFormat = GL_R8UI, format = GL_RED_INTEGER, type = GL_UNSIGNED_BYTE. With existing texture plugins, there does not seem to be a way to accomplish this. For example, when loading a PNG 8-bit grayscale image, type = GL_UNSIGNED_BYTE, but format will be GL_LUMINANCE. Even when overriding internalFormat = GL_R8UI in the input file, format will still be GL_LUMINANCE rather than GL_RED_INTEGER, leading to an OpenGL error. I solved this problem by embedding the format in the image and writing a new image plugin (much like the KTX format), and then overriding intermalFormat from the input file. Another solution would be making OSG's texture loading code smarter (e.g., when internalFormat = GL_R8UI then format could be set automatically to GL_RED_INTEGER), or to expose a way to ovverride both internalFormat and format from the input file. I am still having issues with the OSG file format, for which I cannot find any docs. Can anyone please tell me how I "include" an external OBJ file in my main OSG file? I just want a node that loads geometry from a file. Best regards, ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=33522#33522 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
