From: Iago Toral Quiroga <itoral@igalia.com>
Date: Fri, 19 Jan 2018 08:17:06 +0000 (+0100)
Subject: intel/compiler: fix first_component for 64-bit types on vertex inputs
X-Git-Tag: upstream/18.1.0~1708
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4917d383212b45c946a1311fcaeff6f7ab7b80b1;p=platform%2Fupstream%2Fmesa.git

intel/compiler: fix first_component for 64-bit types on vertex inputs

Divide it by two as we do for other stages. This is because the
component layout qualifier is always in 32-bit units.

Fixes issues in a new CTS test (still WIP):
KHR-GL45.enhanced_layouts.varying_double_components

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
---

diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp
index 0d77564..7a6346a 100644
--- a/src/intel/compiler/brw_fs_nir.cpp
+++ b/src/intel/compiler/brw_fs_nir.cpp
@@ -2420,6 +2420,9 @@ fs_visitor::nir_emit_vs_intrinsic(const fs_builder &bld,
       assert(const_offset && "Indirect input loads not allowed");
       src = offset(src, bld, const_offset->u32[0]);
 
+      if (type_sz(type) == 8)
+         first_component /= 2;
+
       for (unsigned j = 0; j < num_components; j++) {
          bld.MOV(offset(dest, bld, j), offset(src, bld, j + first_component));
       }