From 7a9a54b5c81d3e64a5e5fa2bf52b14b3acf28c2f Mon Sep 17 00:00:00 2001 From: Jordan Justen Date: Mon, 18 Jan 2016 09:53:44 -0800 Subject: [PATCH] nir: Add atomic operations on variables This allows us to first generate atomic operations for shared variables using these opcodes, and then later we can lower those to the shared atomics intrinsics with nir_lower_io. Signed-off-by: Jordan Justen --- src/glsl/nir/nir_intrinsics.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/src/glsl/nir/nir_intrinsics.h b/src/glsl/nir/nir_intrinsics.h index 78c25707dc9..b6996ee3f47 100644 --- a/src/glsl/nir/nir_intrinsics.h +++ b/src/glsl/nir/nir_intrinsics.h @@ -194,6 +194,33 @@ INTRINSIC(image_samples, 0, ARR(), true, 1, 1, 0, INTRINSIC(vulkan_resource_index, 1, ARR(1), true, 1, 0, 3, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) +/* + * variable atomic intrinsics + * + * All of these variable atomic memory operations read a value from memory, + * compute a new value using one of the operations below, write the new value + * to memory, and return the original value read. + * + * All operations take 1 source except CompSwap that takes 2. These sources + * represent: + * + * 0: The data parameter to the atomic function (i.e. the value to add + * in shared_atomic_add, etc). + * 1: For CompSwap only: the second data parameter. + * + * All operations take 1 variable deref. + */ +INTRINSIC(var_atomic_add, 1, ARR(1), true, 1, 1, 0, 0) +INTRINSIC(var_atomic_imin, 1, ARR(1), true, 1, 1, 0, 0) +INTRINSIC(var_atomic_umin, 1, ARR(1), true, 1, 1, 0, 0) +INTRINSIC(var_atomic_imax, 1, ARR(1), true, 1, 1, 0, 0) +INTRINSIC(var_atomic_umax, 1, ARR(1), true, 1, 1, 0, 0) +INTRINSIC(var_atomic_and, 1, ARR(1), true, 1, 1, 0, 0) +INTRINSIC(var_atomic_or, 1, ARR(1), true, 1, 1, 0, 0) +INTRINSIC(var_atomic_xor, 1, ARR(1), true, 1, 1, 0, 0) +INTRINSIC(var_atomic_exchange, 1, ARR(1), true, 1, 1, 0, 0) +INTRINSIC(var_atomic_comp_swap, 2, ARR(1, 1), true, 1, 1, 0, 0) + /* * SSBO atomic intrinsics * -- 2.30.2