[Bug 66731] texture issues in xonotic with llvm+sb and offset mapping

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66731

--- Comment #1 from Vadim Girlin <ptpzz at yandex.ru> ---
Created attachment 82247
  --> https://bugs.freedesktop.org/attachment.cgi?id=82247&action=edit
shader dump

Looks like it's llvm backend's issue, I'm attaching the dump of the failing
shader.

As far as I know, SET_GRADIENTS_x instructions should be in the same TEX clause
with SAMPLE_G instructions that use corresponding gradients. SB ignores
SET_GRADIENTS_x instructions in separate clauses and this makes the problem
more noticeable.

IIRC there was also piglit test failing due to this problem with llvm backend.

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