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glsl: Add new barrier functions for compute shaders

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When these functions are called in GLSL code, we create an intrinsic
function call:

 * groupMemoryBarrier => __intrinsic_group_memory_barrier
 * memoryBarrierAtomicCounter => __intrinsic_memory_barrier_atomic_counter
 * memoryBarrierBuffer => __intrinsic_memory_barrier_buffer
 * memoryBarrierImage => __intrinsic_memory_barrier_image
 * memoryBarrierShared => __intrinsic_memory_barrier_shared

v2:
 * Consolidate with memoryBarrier function/intrinsic creation (curro)

v3:
 * Instead of add_memory_barrier_function, add an intrinsic_name
   parameter to _memory_barrier (curro)

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
This commit is contained in:
Jordan Justen
2015-10-09 14:16:05 -07:00
parent 6bad554d98
commit 91f188710a
1 changed files with 49 additions and 6 deletions
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55
src/glsl/builtin_functions.cpp
View File

@@ -458,10 +458,16 @@ fp64(const _mesa_glsl_parse_state *state)
return state->has_double();
}
static bool
compute_shader(const _mesa_glsl_parse_state *state)
{
return state->stage == MESA_SHADER_COMPUTE;
}
static bool
barrier_supported(const _mesa_glsl_parse_state *state)
{
return state->stage == MESA_SHADER_COMPUTE ||
return compute_shader(state) ||
state->stage == MESA_SHADER_TESS_CTRL;
}
@@ -785,8 +791,8 @@ private:
ir_function_signature *_memory_barrier_intrinsic(
builtin_available_predicate avail);
ir_function_signature *_memory_barrier(
builtin_available_predicate avail);
ir_function_signature *_memory_barrier(const char *intrinsic_name,
builtin_available_predicate avail);
ir_function_signature *_shader_clock_intrinsic(builtin_available_predicate avail,
const glsl_type *type);
@@ -963,6 +969,21 @@ builtin_builder::create_intrinsics()
add_function("__intrinsic_memory_barrier",
_memory_barrier_intrinsic(shader_image_load_store),
NULL);
add_function("__intrinsic_group_memory_barrier",
_memory_barrier_intrinsic(compute_shader),
NULL);
add_function("__intrinsic_memory_barrier_atomic_counter",
_memory_barrier_intrinsic(compute_shader),
NULL);
add_function("__intrinsic_memory_barrier_buffer",
_memory_barrier_intrinsic(compute_shader),
NULL);
add_function("__intrinsic_memory_barrier_image",
_memory_barrier_intrinsic(compute_shader),
NULL);
add_function("__intrinsic_memory_barrier_shared",
_memory_barrier_intrinsic(compute_shader),
NULL);
add_function("__intrinsic_shader_clock",
_shader_clock_intrinsic(shader_clock,
@@ -2754,7 +2775,28 @@ builtin_builder::create_builtins()
add_image_functions(true);
add_function("memoryBarrier",
_memory_barrier(shader_image_load_store),
_memory_barrier("__intrinsic_memory_barrier",
shader_image_load_store),
NULL);
add_function("groupMemoryBarrier",
_memory_barrier("__intrinsic_group_memory_barrier",
compute_shader),
NULL);
add_function("memoryBarrierAtomicCounter",
_memory_barrier("__intrinsic_memory_barrier_atomic_counter",
compute_shader),
NULL);
add_function("memoryBarrierBuffer",
_memory_barrier("__intrinsic_memory_barrier_buffer",
compute_shader),
NULL);
add_function("memoryBarrierImage",
_memory_barrier("__intrinsic_memory_barrier_image",
compute_shader),
NULL);
add_function("memoryBarrierShared",
_memory_barrier("__intrinsic_memory_barrier_shared",
compute_shader),
NULL);
add_function("clock2x32ARB",
@@ -5264,10 +5306,11 @@ builtin_builder::_memory_barrier_intrinsic(builtin_available_predicate avail)
}
ir_function_signature *
builtin_builder::_memory_barrier(builtin_available_predicate avail)
builtin_builder::_memory_barrier(const char *intrinsic_name,
builtin_available_predicate avail)
{
MAKE_SIG(glsl_type::void_type, avail, 0);
body.emit(call(shader->symbols->get_function("__intrinsic_memory_barrier"),
body.emit(call(shader->symbols->get_function(intrinsic_name),
NULL, sig->parameters));
return sig;
}