It relies on the force_glsl_abs_sqrt driconf option.

Signed-off-by: Samuel Pitoiset <samuel.pitoi...@gmail.com>
---
 src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp 
b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 0757d141fc..e22c77bf3a 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -6982,6 +6982,10 @@ st_link_shader(struct gl_context *ctx, struct 
gl_shader_program *prog)
          lower_discard(ir);
       }
 
+      if (ctx->Const.ForceGLSLAbsSqrt) {
+         lower_sqrt(ir);
+      }
+
       if (ctx->Const.GLSLOptimizeConservatively) {
          /* Do it once and repeat only if there's unsupported control flow. */
          do {
-- 
2.12.0

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