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spirv: Split the vtn_emit_scoped_memory_barrier() logic

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We are about to add support for scoped control+memory barriers. Let's
move the convert from SPIRV to NIR enums logic in helpers so we can
easily re-use them.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4900>
This commit is contained in:
Boris Brezillon
2020-04-23 14:16:43 +02:00
committed by Marge Bot
parent d3c937c0e4
commit 94438a64bf
1 changed files with 31 additions and 6 deletions
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37
src/compiler/spirv/spirv_to_nir.c
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@@ -1991,9 +1991,9 @@ vtn_split_barrier_semantics(struct vtn_builder *b,
*after |= SpvMemorySemanticsMakeAvailableMask | storage_semantics;
}
static void
vtn_emit_scoped_memory_barrier(struct vtn_builder *b, SpvScope scope,
SpvMemorySemanticsMask semantics)
static nir_memory_semantics
vtn_mem_semantics_to_nir_mem_semantics(struct vtn_builder *b,
SpvMemorySemanticsMask semantics)
{
nir_memory_semantics nir_semantics = 0;
@@ -2050,6 +2050,13 @@ vtn_emit_scoped_memory_barrier(struct vtn_builder *b, SpvScope scope,
nir_semantics |= NIR_MEMORY_MAKE_VISIBLE;
}
return nir_semantics;
}
static nir_variable_mode
vtn_mem_sematics_to_nir_var_modes(struct vtn_builder *b,
SpvMemorySemanticsMask semantics)
{
/* Vulkan Environment for SPIR-V says "SubgroupMemory, CrossWorkgroupMemory,
* and AtomicCounterMemory are ignored".
*/
@@ -2075,10 +2082,12 @@ vtn_emit_scoped_memory_barrier(struct vtn_builder *b, SpvScope scope,
modes |= nir_var_shader_out;
}
/* No barrier to add. */
if (nir_semantics == 0 || modes == 0)
return;
return modes;
}
static nir_scope
vtn_scope_to_nir_scope(struct vtn_builder *b, SpvScope scope)
{
nir_scope nir_scope;
switch (scope) {
case SpvScopeDevice:
@@ -2113,6 +2122,22 @@ vtn_emit_scoped_memory_barrier(struct vtn_builder *b, SpvScope scope,
vtn_fail("Invalid memory scope");
}
return nir_scope;
}
static void
vtn_emit_scoped_memory_barrier(struct vtn_builder *b, SpvScope scope,
SpvMemorySemanticsMask semantics)
{
nir_variable_mode modes = vtn_mem_sematics_to_nir_var_modes(b, semantics);
nir_memory_semantics nir_semantics =
vtn_mem_semantics_to_nir_mem_semantics(b, semantics);
/* No barrier to add. */
if (nir_semantics == 0 || modes == 0)
return;
nir_scope nir_scope = vtn_scope_to_nir_scope(b, scope);
nir_intrinsic_instr *intrin =
nir_intrinsic_instr_create(b->shader, nir_intrinsic_scoped_memory_barrier);
nir_intrinsic_set_memory_semantics(intrin, nir_semantics);