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glsl: Add builtin barrier() function 

[jordan.l.justen@intel.com: Add CS support]
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Chris Forbes 2014-09-07 19:29:50 +12:00 committed by Jordan Justen
parent e7f628c2fc
commit 86855365b4
1 changed files with 18 additions and 0 deletions
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18
src/glsl/builtin_functions.cpp
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@ -410,6 +410,13 @@ fp64(const _mesa_glsl_parse_state *state)
return state->has_double();
}
static bool
barrier_supported(const _mesa_glsl_parse_state *state)
{
return state->stage == MESA_SHADER_COMPUTE;
/* TODO: || stage->state == MESA_SHADER_TESS_CTRL; */
}
/** @} */
/******************************************************************************/
@ -654,6 +661,7 @@ private:
const glsl_type *stream_type);
ir_function_signature *_EndStreamPrimitive(builtin_available_predicate avail,
const glsl_type *stream_type);
B0(barrier)
B2(textureQueryLod);
B1(textureQueryLevels);
@ -1933,6 +1941,7 @@ builtin_builder::create_builtins()
_EndStreamPrimitive(gs_streams, glsl_type::uint_type),
_EndStreamPrimitive(gs_streams, glsl_type::int_type),
NULL);
add_function("barrier", _barrier(), NULL);
add_function("textureQueryLOD",
_textureQueryLod(glsl_type::sampler1D_type, glsl_type::float_type),
@ -4295,6 +4304,15 @@ builtin_builder::_EndStreamPrimitive(builtin_available_predicate avail,
return sig;
}
ir_function_signature *
builtin_builder::_barrier()
{
MAKE_SIG(glsl_type::void_type, barrier_supported, 0);
body.emit(new(mem_ctx) ir_barrier());
return sig;
}
ir_function_signature *
builtin_builder::_textureQueryLod(const glsl_type *sampler_type,
const glsl_type *coord_type)