From: Kenneth Graunke Date: Wed, 18 May 2016 06:16:14 +0000 (-0700) Subject: nir: Fix fddy swizzles in nir_lower_wpos_ytransform(). X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=287f099db170132518b75142de8580fd252fde45;p=mesa.git nir: Fix fddy swizzles in nir_lower_wpos_ytransform(). The original value might have been swizzled. That's taken care of in the fmul source - we don't want to reswizzle it again. Fixes validation failures in glsl-derivs-varyings on a branch of mine which uses this pass in i965. Signed-off-by: Kenneth Graunke Reviewed-by: Rob Clark --- diff --git a/src/compiler/nir/nir_lower_wpos_ytransform.c b/src/compiler/nir/nir_lower_wpos_ytransform.c index 5546788f9fd..41f85544246 100644 --- a/src/compiler/nir/nir_lower_wpos_ytransform.c +++ b/src/compiler/nir/nir_lower_wpos_ytransform.c @@ -252,6 +252,9 @@ lower_fddy(lower_wpos_ytransform_state *state, nir_alu_instr *fddy) nir_instr_rewrite_src(&fddy->instr, &fddy->src[0].src, nir_src_for_ssa(pt)); + + for (unsigned i = 0; i < 4; i++) + fddy->src[0].swizzle[i] = MIN2(i, pt->num_components - 1); } static bool