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nak: Use suld.constant when ACCESS_CAN_REORDER is set

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This is way faster than suld.sys, which is what we're using today.  So
far I haven't seen it matter for anything but texel buffers but it
likely helps some app somewhere.

Backport-to: 25.0
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33612>
This commit is contained in:
Faith Ekstrand 2025-02-18 19:06:37 -06:00
parent 5762586c6d
commit ffdc0d8e98
1 changed files with 20 additions and 2 deletions
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22
src/nouveau/compiler/nak/from_nir.rs
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@ -2338,6 +2338,15 @@ impl<'a> ShaderFromNir<'a> {
let coord = self.get_image_coord(intrin, dim); let coord = self.get_image_coord(intrin, dim);
// let sample = self.get_src(&srcs[2]); // let sample = self.get_src(&srcs[2]);
let mem_order = if intrin.intrinsic
== nir_intrinsic_load_global_constant
|| (intrin.access() & ACCESS_CAN_REORDER) != 0
{
MemOrder::Constant
} else {
MemOrder::Strong(MemScope::System)
};
let comps = intrin.num_components; let comps = intrin.num_components;
assert!(intrin.def.bit_size() == 32); assert!(intrin.def.bit_size() == 32);
assert!(comps == 1 || comps == 2 || comps == 4); assert!(comps == 1 || comps == 2 || comps == 4);
@ -2348,7 +2357,7 @@ impl<'a> ShaderFromNir<'a> {
dst: dst.into(), dst: dst.into(),
fault: Dst::None, fault: Dst::None,
image_dim: dim, image_dim: dim,
mem_order: MemOrder::Strong(MemScope::System), mem_order,
mem_eviction_priority: self mem_eviction_priority: self
.get_eviction_priority(intrin.access()), .get_eviction_priority(intrin.access()),
mask: (1 << comps) - 1, mask: (1 << comps) - 1,
@ -2363,6 +2372,15 @@ impl<'a> ShaderFromNir<'a> {
let coord = self.get_image_coord(intrin, dim); let coord = self.get_image_coord(intrin, dim);
// let sample = self.get_src(&srcs[2]); // let sample = self.get_src(&srcs[2]);
let mem_order = if intrin.intrinsic
== nir_intrinsic_load_global_constant
|| (intrin.access() & ACCESS_CAN_REORDER) != 0
{
MemOrder::Constant
} else {
MemOrder::Strong(MemScope::System)
};
let comps = intrin.num_components; let comps = intrin.num_components;
assert!(intrin.def.bit_size() == 32); assert!(intrin.def.bit_size() == 32);
assert!(comps == 5); assert!(comps == 5);
@ -2374,7 +2392,7 @@ impl<'a> ShaderFromNir<'a> {
dst: dst.into(), dst: dst.into(),
fault: fault.into(), fault: fault.into(),
image_dim: dim, image_dim: dim,
mem_order: MemOrder::Strong(MemScope::System), mem_order,
mem_eviction_priority: self mem_eviction_priority: self
.get_eviction_priority(intrin.access()), .get_eviction_priority(intrin.access()),
mask: (1 << (comps - 1)) - 1, mask: (1 << (comps - 1)) - 1,