[Bug 105271] WebGL2 shader crashes i965_dri.so 17.3.3

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Feb 28 02:07:00 UTC 2018


https://bugs.freedesktop.org/show_bug.cgi?id=105271

--- Comment #2 from Timothy Arceri <t_arceri at yahoo.com.au> ---
This looks like a buggy shader to me.

Inside one of the loops it contains:

((v687 / (((true ? (0 + ((v687) + 0)) : (- 63176))

Where for the first iteration of the loop v687 == 0 so we end up with:

0 / 0

My guess is GLSL IR just happened to optimise away this expression before
constant folding tried to evaluate the constants expression.

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