When I render a cube and texture it I end up with white edges along the cube. I've checked the vertex and texture coordinates and they look fine to me. My texture is a power of 2. It is a texture map containing 4x4 textures in which each texture is 16x16 pixels. Does anyone have any suggestions?
I guess you are experiencing texture bleeding. You can solve it by either using GL_CLAMP on your textures or adjusting slightly your UV coordinates to 0.0005 and 0.0095 (for instance) instead of 0 and 1 to compensate for the texture sampling artifacts.
来源：https://stackoverflow.com/questions/5201115/white-edges-appearing-at-edge-of-cube