mesa: Expose GLSL interpolation qualifiers in gl_fragment_program.

This patch makes GLSL interpolation qualifiers visible to drivers via
the array InterpQualifier[] in gl_fragment_program, so that they can
easily be used by driver back-ends to select the correct interpolation
mode.

Previous to this patch, the GLSL compiler was using the enum
ir_variable_interpolation to represent interpolation types.  Rather
than make a duplicate enum in core mesa to represent the same thing, I
moved the enum into mtypes.h and renamed it to be more consistent with
the other enums defined there.

Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/glsl/ir_reader.cpp b/src/glsl/ir_reader.cpp
index afb06b3beff..e3a3ed97d3a 100644
--- a/src/glsl/ir_reader.cpp
+++ b/src/glsl/ir_reader.cpp
@@ -405,11 +405,11 @@ ir_reader::read_declaration(s_expression *expr)
       } else if (strcmp(qualifier->value(), "inout") == 0) {
 	 var->mode = ir_var_inout;
       } else if (strcmp(qualifier->value(), "smooth") == 0) {
-	 var->interpolation = ir_var_smooth;
+	 var->interpolation = INTERP_QUALIFIER_SMOOTH;
       } else if (strcmp(qualifier->value(), "flat") == 0) {
-	 var->interpolation = ir_var_flat;
+	 var->interpolation = INTERP_QUALIFIER_FLAT;
       } else if (strcmp(qualifier->value(), "noperspective") == 0) {
-	 var->interpolation = ir_var_noperspective;
+	 var->interpolation = INTERP_QUALIFIER_NOPERSPECTIVE;
       } else {
 	 ir_read_error(expr, "unknown qualifier: %s", qualifier->value());
 	 return NULL;