Vertex shader leaks and corrupts stuff until it segfaults

[leilei-]

In the leidev branch i've realized how bad the vertex shader code has become after cleaning up some of my deprecated shader stuff. Problem is, debugging gdb with it leads to a segfault in other parts in the code (like bots), when there's obvious visual symptoms of a memory issue:

• Dynamic light texture sometimes gets corrupted

• Whiteimage sometimes gets corrupted

• in a debug build, tcMod atlas effects pick the wrong subimage (smoke images becoming shockwave images)