glsl/types: add new subroutine type (v3.2)

This type will be used to store the name of subroutine types

as in subroutine void myfunc(void);
will store myfunc into a subroutine type.

This is required to the parser can identify a subroutine
type in a uniform decleration as a valid type, and also for
looking up the type later.

Also add contains_subroutine method.

v2: handle subroutine to int comparisons, needed
for lowering pass.
v3: do subroutine to int with it's own IR
operation to avoid hacking on asserts (Kayden)
v3.1: fix warnings in this patch, fix nir,
fix tgsi
v3.2: fixup tests

Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Chris Forbes <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

tests: fix warnings

1 files changed, 6 insertions, 0 deletions

diff --git a/src/glsl/ir_builder.cpp b/src/glsl/ir_builder.cpp
index e44b05c991c..cd03859cac0 100644
--- a/src/glsl/ir_builder.cpp
+++ b/src/glsl/ir_builder.cpp
@@ -338,6 +338,12 @@ sign(operand a)
    return expr(ir_unop_sign, a);
 }
 
+ir_expression *
+subr_to_int(operand a)
+{
+   return expr(ir_unop_subroutine_to_int, a);
+}
+
 ir_expression*
 equal(operand a, operand b)
 {