mesa: remove the UsesDFdy flag

Seems the last user of this was removed in 08bc74e69.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

1 files changed, 2 insertions, 17 deletions

diff --git a/src/compiler/glsl/ir_set_program_inouts.cpp b/src/compiler/glsl/ir_set_program_inouts.cpp
index 48ed3c5..f5b36df 100644
--- a/src/compiler/glsl/ir_set_program_inouts.cpp
+++ b/src/compiler/glsl/ir_set_program_inouts.cpp
@@ -26,8 +26,8 @@
  *
  * Sets the InputsRead and OutputsWritten of Mesa programs.
  *
- * Additionally, for fragment shaders, sets the InterpQualifier array, the
- * IsCentroid and IsSample bitfields, and the UsesDFdy flag.
+ * Additionally, for fragment shaders, sets the InterpQualifier array, and the
+ * IsCentroid and IsSample bitfields.
  *
  * Mesa programs (gl_program, not gl_shader_program) have a set of
  * flags indicating which varyings are read and written.  Computing
@@ -58,7 +58,6 @@ public:
 
    virtual ir_visitor_status visit_enter(ir_dereference_array *);
    virtual ir_visitor_status visit_enter(ir_function_signature *);
-   virtual ir_visitor_status visit_enter(ir_expression *);
    virtual ir_visitor_status visit_enter(ir_discard *);
    virtual ir_visitor_status visit_enter(ir_texture *);
    virtual ir_visitor_status visit(ir_dereference_variable *);
@@ -412,19 +411,6 @@ ir_set_program_inouts_visitor::visit_enter(ir_function_signature *ir)
 }
 
 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_coarse ||
-        ir->operation == ir_unop_dFdy_fine)) {
-      gl_fragment_program *fprog = (gl_fragment_program *) prog;
-      fprog->UsesDFdy = true;
-   }
-   return visit_continue;
-}
-
-ir_visitor_status
 ir_set_program_inouts_visitor::visit_enter(ir_discard *)
 {
    /* discards are only allowed in fragment shaders. */
@@ -462,7 +448,6 @@ do_set_program_inouts(exec_list *instructions, struct gl_program *prog,
       memset(fprog->InterpQualifier, 0, sizeof(fprog->InterpQualifier));
       fprog->IsCentroid = 0;
       fprog->IsSample = 0;
-      fprog->UsesDFdy = false;
       fprog->UsesKill = false;
    }
    visit_list_elements(&v, instructions);