glsl/lower_clip_distance: Update symbol table.

This patch modifies the clip distance lowering pass so that the new
symbol it generates (glClipDistanceMESA) is added to the shader's
symbol table.

This will allow a later patch to modify the linker so that it finds
transform feedback varyings using the symbol table rather than having
to iterate through all the declarations in the shader.

Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 6 insertions, 2 deletions

diff --git a/src/glsl/lower_clip_distance.cpp b/src/glsl/lower_clip_distance.cpp
index 0316914714f..09bdc36e169 100644
--- a/src/glsl/lower_clip_distance.cpp
+++ b/src/glsl/lower_clip_distance.cpp
@@ -45,6 +45,7 @@
  * LowerClipDistance flag in gl_shader_compiler_options to true.
  */
 
+#include "glsl_symbol_table.h"
 #include "ir_hierarchical_visitor.h"
 #include "ir.h"
 
@@ -334,11 +335,14 @@ lower_clip_distance_visitor::visit_leave(ir_call *ir)
 
 
 bool
-lower_clip_distance(exec_list *instructions)
+lower_clip_distance(gl_shader *shader)
 {
    lower_clip_distance_visitor v;
 
-   visit_list_elements(&v, instructions);
+   visit_list_elements(&v, shader->ir);
+
+   if (v.new_clip_distance_var)
+      shader->symbols->add_variable(v.new_clip_distance_var);
 
    return v.progress;
 }