Mesa (master): glsl: treat lowp as mediump when lowering builtins

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Module: Mesa
Branch: master
Commit: 9c14a87839d2937e07f69418285bbfc3c5b3e629
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=9c14a87839d2937e07f69418285bbfc3c5b3e629

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Mon May  4 21:52:09 2020 -0400

glsl: treat lowp as mediump when lowering builtins

This seems to have been missed.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Reviewed-by: Rob Clark <robdclark at chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5002>

---

 src/compiler/glsl/lower_precision.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/compiler/glsl/lower_precision.cpp b/src/compiler/glsl/lower_precision.cpp
index 332cd50cc7a..9ba1efafa01 100644
--- a/src/compiler/glsl/lower_precision.cpp
+++ b/src/compiler/glsl/lower_precision.cpp
@@ -646,8 +646,10 @@ find_precision_visitor::visit_enter(ir_call *ir)
 
    if (!ir->callee->is_builtin() ||
        ir->return_deref == NULL ||
-       ir->return_deref->variable_referenced()->data.precision !=
-       GLSL_PRECISION_MEDIUM)
+       (ir->return_deref->variable_referenced()->data.precision !=
+        GLSL_PRECISION_MEDIUM &&
+        ir->return_deref->variable_referenced()->data.precision !=
+        GLSL_PRECISION_LOW))
       return visit_continue;
 
    ir->callee = map_builtin(ir->callee);