r_alias.c: try changing the number of components in the VBO setup from 3 to 4 for the normals (even though the 4th component is ignored in the shader), because http://amd-dev.wpengine.netdna-cdn.com/wordpress/media/2012/10/ATI_OpenGL_Programming_and_Optimization_Guide.pdf clearly states that only 4-components GL_BYTE vertex are natively supported.