mesa: hook up core bits of GL_ARB_shader_group_vote

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/compiler/glsl/builtin_functions.cpp b/src/compiler/glsl/builtin_functions.cpp
index edd02bb..db0dcb6 100644
--- a/src/compiler/glsl/builtin_functions.cpp
+++ b/src/compiler/glsl/builtin_functions.cpp
@@ -528,6 +528,12 @@ barrier_supported(const _mesa_glsl_parse_state *state)
           state->stage == MESA_SHADER_TESS_CTRL;
 }
 
+static bool
+vote(const _mesa_glsl_parse_state *state)
+{
+   return state->ARB_shader_group_vote_enable;
+}
+
 /** @} */
 
 /******************************************************************************/
@@ -853,6 +859,8 @@ private:
    ir_function_signature *_shader_clock(builtin_available_predicate avail,
                                         const glsl_type *type);
 
+   ir_function_signature *_vote(enum ir_expression_operation opcode);
+
 #undef B0
 #undef B1
 #undef B2
@@ -2935,6 +2943,10 @@ builtin_builder::create_builtins()
                               glsl_type::uvec2_type),
                 NULL);
 
+   add_function("anyInvocationARB", _vote(ir_unop_vote_any), NULL);
+   add_function("allInvocationsARB", _vote(ir_unop_vote_all), NULL);
+   add_function("allInvocationsEqualARB", _vote(ir_unop_vote_eq), NULL);
+
 #undef F
 #undef FI
 #undef FIUD
@@ -5576,6 +5588,16 @@ builtin_builder::_shader_clock(builtin_available_predicate avail,
    return sig;
 }
 
+ir_function_signature *
+builtin_builder::_vote(enum ir_expression_operation opcode)
+{
+   ir_variable *value = in_var(glsl_type::bool_type, "value");
+
+   MAKE_SIG(glsl_type::bool_type, vote, 1, value);
+   body.emit(ret(expr(opcode, value)));
+   return sig;
+}
+
 /** @} */
 
 /******************************************************************************/