[Bug 105670] [regression][hang] Trine1EE hangs GPU after loading screen on Mesa3D-17.3 and later

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105670

--- Comment #17 from Timothy Arceri <t_arceri at yahoo.com.au> ---
We still need to create a piglit test for this but here is the fix for NIR
also:

https://patchwork.freedesktop.org/patch/212882/

It seems once the loop in unrolled NIR then optimises this whole shader down
to:

        vec4 32 ssa_0 = load_const (0x00000000 /* 0.000000 */, 0x00000000 /*
0.000000 */, 0x00000000 /* 0.000000 */, 0x00000000 /* 0.000000 */)
        intrinsic store_var (ssa_0) (ps_out) (15) /* wrmask=xyzw */
        /* succs: block_0 */
        block block_0:

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