ggml-org/llama.cpp b12220

on GitHub

metal : make ggml_tri select instead of scaling by the comparison (#30711)

• metal: make ggml_tri select instead of scaling by the comparison

The kernel multiplied by the 0/1 comparison, which turns a +-inf outside the triangle into NaN, while the CPU kernel writes a plain zero there. Select, like the CPU does.

Adds test_tri_special, which puts +-inf into the cells that have to be discarded, for all four triangle types. It fails against the previous kernel and passes with this change.

• Just trim down the repetitive comments.