glsl: Mark program as using dFdy if coarse/fine variant is used

Signed-off-by: Chris Forbes <[email protected]>
Reviewed-by: Matt Turner <[email protected]>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/glsl/ir_set_program_inouts.cpp b/src/glsl/ir_set_program_inouts.cpp
index 5163eb215df..97ead750aee 100644
--- a/src/glsl/ir_set_program_inouts.cpp
+++ b/src/glsl/ir_set_program_inouts.cpp
@@ -306,7 +306,9 @@ ir_visitor_status
 ir_set_program_inouts_visitor::visit_enter(ir_expression *ir)
 {
    if (this->shader_stage == MESA_SHADER_FRAGMENT &&
-       ir->operation == ir_unop_dFdy) {
+       (ir->operation == ir_unop_dFdy ||
+        ir->operation == ir_unop_dFdy_coarse ||
+        ir->operation == ir_unop_dFdy_fine)) {
       gl_fragment_program *fprog = (gl_fragment_program *) prog;
       fprog->UsesDFdy = true;
    }