Thank you very much for this guide, I intend to use it in the future.
I have a question about running the exploit on 2.1. Is the Spider exploit fairly reliable for 2.1 or would you recommend purchasing a copy of Cubic Ninja?
You actually found the problem you just had one more step to fix it.
Open the file libsf2d/source/sf2d.c in a text editor and search for "GPU_KEEP" and change it to "GPU_STENCIL_KEEP" three times, same as in that link you found:
- GPU_SetStencilOp(GPU_KEEP, GPU_KEEP, GPU_KEEP);
+...