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https://github.com/EmbarkStudios/rust-gpu.git
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Add low-level atomic instructions
This commit is contained in:
BeastLe9enD
Eduard-Mihai Burtescu
parent
a9ae4d235b
commit
6387d2156f
@ -11,12 +11,14 @@ use crate::{
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#[cfg(target_arch = "spirv")]
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use core::arch::asm;
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mod atomic;
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mod barrier;
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mod demote_to_helper_invocation_ext;
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mod derivative;
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mod primitive;
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mod ray_tracing;
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pub use atomic::*;
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pub use barrier::*;
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pub use demote_to_helper_invocation_ext::*;
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pub use derivative::*;
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@ -226,29 +228,6 @@ pub fn signed_max<T: SignedInteger>(a: T, b: T) -> T {
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unsafe { call_glsl_op_with_ints::<_, 42>(a, b) }
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}
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/// Atomically increment an integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicIIncrement")]
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pub unsafe fn atomic_i_increment<I: Integer, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut I,
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) -> I {
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let mut old = I::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%old = OpAtomicIIncrement _ {ptr} %scope %semantics",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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}
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old
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}
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/// Index into an array without bounds checking.
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///
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/// The main purpose of this trait is to work around the fact that the regular `get_unchecked*`
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487
crates/spirv-std/src/arch/atomic.rs
Normal file
487
crates/spirv-std/src/arch/atomic.rs
Normal file
@ -0,0 +1,487 @@
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#[cfg(target_arch = "spirv")]
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use core::arch::asm;
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use crate::{
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float::Float,
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integer::{Integer, SignedInteger, UnsignedInteger},
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scalar::Scalar,
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};
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/// Atomically load a scalar and return the value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicLoad")]
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#[inline]
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pub unsafe fn atomic_load<T: Scalar, const SCOPE: u32, const SEMANTICS: u32>(ptr: &T) -> T {
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let mut result = T::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%result = OpAtomicLoad _ {ptr} %scope %semantics",
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"OpStore {result} %result",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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result = in(reg) &mut result
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}
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result
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}
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/// Atomically store a scalar.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicStore")]
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#[inline]
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pub unsafe fn atomic_store<T: Scalar, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut T,
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value: T,
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) {
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"OpAtomicStore {ptr} %scope %semantics %value",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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value = in(reg) &value
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}
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}
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/// Atomically exchange a scalar and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicExchange")]
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#[inline]
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pub unsafe fn atomic_exchange<T: Scalar, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut T,
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value: T,
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) -> T {
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let mut old = T::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"%old = OpAtomicExchange _ {ptr} %scope %semantics %value",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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value = in(reg) &value
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}
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old
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}
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/// Atomically compare and exchange an integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicCompareExchange")]
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#[inline]
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pub unsafe fn atomic_compare_exchange<
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I: Integer,
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const SCOPE: u32,
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const EQUAL: u32,
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const UNEQUAL: u32,
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>(
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ptr: &mut I,
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value: I,
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comparator: I,
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) -> I {
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let mut old = I::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%equal = OpConstant %u32 {equal}",
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"%unequal = OpConstant %u32 {unequal}",
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"%value = OpLoad _ {value}",
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"%comparator = OpLoad _ {comparator}",
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"%old = OpAtomicCompareExchange _ {ptr} %scope %equal %unequal %value %comparator",
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"OpStore {old} %old",
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scope = const SCOPE,
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equal = const EQUAL,
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unequal = const UNEQUAL,
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ptr = in(reg) ptr,
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value = in(reg) &value,
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comparator = in(reg) &comparator,
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old = in(reg) &mut old,
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}
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old
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}
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/// Atomically increment an integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicIIncrement")]
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#[inline]
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pub unsafe fn atomic_i_increment<I: Integer, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut I,
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) -> I {
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let mut old = I::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%old = OpAtomicIIncrement _ {ptr} %scope %semantics",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old
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}
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old
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}
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/// Atomically decrement an integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicIDecrement")]
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#[inline]
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pub unsafe fn atomic_i_decrement<I: Integer, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut I,
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) -> I {
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let mut old = I::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%old = OpAtomicIDecrement _ {ptr} %scope %semantics",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old
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}
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old
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}
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/// Atomically add an integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicIAdd")]
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#[inline]
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pub unsafe fn atomic_i_add<I: Integer, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut I,
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value: I,
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) -> I {
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let mut old = I::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"%old = OpAtomicIAdd _ {ptr} %scope %semantics %value",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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value = in(reg) &value
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}
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old
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}
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/// Atomically sub an integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicISub")]
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#[inline]
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pub unsafe fn atomic_i_sub<I: Integer, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut I,
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value: I,
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) -> I {
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let mut old = I::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"%old = OpAtomicISub _ {ptr} %scope %semantics %value",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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value = in(reg) &value
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}
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old
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}
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/// Atomically min a signed integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicSMin")]
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#[inline]
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pub unsafe fn atomic_s_min<S: SignedInteger, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut S,
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value: S,
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) -> S {
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let mut old = S::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"%old = OpAtomicSMin _ {ptr} %scope %semantics %value",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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value = in(reg) &value
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}
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old
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}
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/// Atomically min an unsigned integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicUMin")]
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#[inline]
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pub unsafe fn atomic_u_min<U: UnsignedInteger, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut U,
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value: U,
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) -> U {
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let mut old = U::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"%old = OpAtomicUMin _ {ptr} %scope %semantics %value",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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value = in(reg) &value
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}
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old
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}
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/// Atomically max a signed integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicSMax")]
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#[inline]
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pub unsafe fn atomic_s_max<S: SignedInteger, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut S,
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value: S,
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) -> S {
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let mut old = S::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"%old = OpAtomicSMax _ {ptr} %scope %semantics %value",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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value = in(reg) &value
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}
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old
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}
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/// Atomically max an unsigned integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicUMax")]
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#[inline]
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pub unsafe fn atomic_u_max<U: UnsignedInteger, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut U,
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value: U,
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) -> U {
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let mut old = U::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"%old = OpAtomicUMax _ {ptr} %scope %semantics %value",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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value = in(reg) &value
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}
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old
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}
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/// Atomically and an integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicAnd")]
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#[inline]
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pub unsafe fn atomic_and<I: Integer, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut I,
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value: I,
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) -> I {
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let mut old = I::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"%old = OpAtomicAnd _ {ptr} %scope %semantics %value",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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value = in(reg) &value
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}
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old
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}
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/// Atomically or an integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicOr")]
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#[inline]
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pub unsafe fn atomic_or<I: Integer, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut I,
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value: I,
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) -> I {
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let mut old = I::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"%old = OpAtomicOr _ {ptr} %scope %semantics %value",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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value = in(reg) &value
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}
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old
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}
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/// Atomically xor an integer and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicXor")]
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#[inline]
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pub unsafe fn atomic_xor<I: Integer, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut I,
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value: I,
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) -> I {
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let mut old = I::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"%old = OpAtomicXor _ {ptr} %scope %semantics %value",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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value = in(reg) &value
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}
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old
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}
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/// Atomically min a float and return the old value.
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#[spirv_std_macros::gpu_only]
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#[doc(alias = "OpAtomicFMinEXT")]
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#[inline]
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pub unsafe fn atomic_f_min_ext<F: Float, const SCOPE: u32, const SEMANTICS: u32>(
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ptr: &mut F,
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value: F,
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) -> F {
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let mut old = F::default();
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asm! {
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"%u32 = OpTypeInt 32 0",
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"%scope = OpConstant %u32 {scope}",
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"%semantics = OpConstant %u32 {semantics}",
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"%value = OpLoad _ {value}",
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"%old = OpAtomicFMinEXT _ {ptr} %scope %semantics %value",
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"OpStore {old} %old",
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scope = const SCOPE,
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semantics = const SEMANTICS,
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ptr = in(reg) ptr,
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old = in(reg) &mut old,
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value = in(reg) &value
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||||
}
|
||||
|
||||
old
|
||||
}
|
||||
|
||||
/// Atomically max a float and return the old value.
|
||||
#[spirv_std_macros::gpu_only]
|
||||
#[doc(alias = "OpAtomicFMaxEXT")]
|
||||
#[inline]
|
||||
pub unsafe fn atomic_f_max_ext<F: Float, const SCOPE: u32, const SEMANTICS: u32>(
|
||||
ptr: &mut F,
|
||||
value: F,
|
||||
) -> F {
|
||||
let mut old = F::default();
|
||||
|
||||
asm! {
|
||||
"%u32 = OpTypeInt 32 0",
|
||||
"%scope = OpConstant %u32 {scope}",
|
||||
"%semantics = OpConstant %u32 {semantics}",
|
||||
"%value = OpLoad _ {value}",
|
||||
"%old = OpAtomicFMaxEXT _ {ptr} %scope %semantics %value",
|
||||
"OpStore {old} %old",
|
||||
scope = const SCOPE,
|
||||
semantics = const SEMANTICS,
|
||||
ptr = in(reg) ptr,
|
||||
old = in(reg) &mut old,
|
||||
value = in(reg) &value
|
||||
}
|
||||
|
||||
old
|
||||
}
|
||||
|
||||
/// Atomically add a float and return the old value.
|
||||
#[spirv_std_macros::gpu_only]
|
||||
#[doc(alias = "OpAtomicFAddEXT")]
|
||||
#[inline]
|
||||
pub unsafe fn atomic_f_add_ext<F: Float, const SCOPE: u32, const SEMANTICS: u32>(
|
||||
ptr: &mut F,
|
||||
value: F,
|
||||
) -> F {
|
||||
let mut old = F::default();
|
||||
|
||||
asm! {
|
||||
"%u32 = OpTypeInt 32 0",
|
||||
"%scope = OpConstant %u32 {scope}",
|
||||
"%semantics = OpConstant %u32 {semantics}",
|
||||
"%value = OpLoad _ {value}",
|
||||
"%old = OpAtomicFMaxEXT _ {ptr} %scope %semantics %value",
|
||||
"OpStore {old} %old",
|
||||
scope = const SCOPE,
|
||||
semantics = const SEMANTICS,
|
||||
ptr = in(reg) ptr,
|
||||
old = in(reg) &mut old,
|
||||
value = in(reg) &value
|
||||
}
|
||||
|
||||
old
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user