Mesa (master): glsl: add intrinsics for ARB_shader_group_vote and ARB_shader_ballot

[Nicolai Hähnle]

Module: Mesa
Branch: master
Commit: 99941a97241e550985e8e5624e4959835eb0cd6b
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=99941a97241e550985e8e5624e4959835eb0cd6b

Author: Nicolai Hähnle <nicolai.haehnle at amd.com>
Date:   Wed Apr 19 10:08:25 2017 +0200

glsl: add intrinsics for ARB_shader_group_vote and ARB_shader_ballot

These operations are currently implemented as IR expressions. However,
they cannot be transformed and moved in the way that other IR
expressions can because they have non-trivial interactions with
control-flow.

Reviewed-by: Timothy Arceri <tarceri at itsqueeze.com>
Reviewed-by: Marek Olšák <marek.olsak at amd.com>

---

 src/compiler/glsl/ir.h                     | 7 +++++++
 src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 6 ++++++
 2 files changed, 13 insertions(+)

diff --git a/src/compiler/glsl/ir.h b/src/compiler/glsl/ir.h
index d7a81c5196..9ab4df7219 100644
--- a/src/compiler/glsl/ir.h
+++ b/src/compiler/glsl/ir.h
@@ -1098,6 +1098,13 @@ enum ir_intrinsic_id {
    ir_intrinsic_memory_barrier_image,
    ir_intrinsic_memory_barrier_shared,
 
+   ir_intrinsic_vote_all,
+   ir_intrinsic_vote_any,
+   ir_intrinsic_vote_eq,
+   ir_intrinsic_ballot,
+   ir_intrinsic_read_invocation,
+   ir_intrinsic_read_first_invocation,
+
    ir_intrinsic_shared_load,
    ir_intrinsic_shared_store = MAKE_INTRINSIC_FOR_TYPE(store, shared),
    ir_intrinsic_shared_atomic_add = MAKE_INTRINSIC_FOR_TYPE(atomic_add, shared),
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 8ca90f6c43..85a55afb37 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -3994,6 +3994,12 @@ glsl_to_tgsi_visitor::visit(ir_call *ir)
       return;
    }
 
+   case ir_intrinsic_vote_all:
+   case ir_intrinsic_vote_any:
+   case ir_intrinsic_vote_eq:
+   case ir_intrinsic_ballot:
+   case ir_intrinsic_read_first_invocation:
+   case ir_intrinsic_read_invocation:
    case ir_intrinsic_invalid:
    case ir_intrinsic_generic_load:
    case ir_intrinsic_generic_store: