diff options
| author | Iago Toral Quiroga <[email protected]> | 2015-06-01 09:40:39 +0200 |
|---|---|---|
| committer | Samuel Iglesias Gonsalvez <[email protected]> | 2015-09-25 08:39:23 +0200 |
| commit | 9d5c0be5d518a0ac7381ebe40b1fa2bef9839bdf (patch) | |
| tree | 91bd7852d9e6112f01380cadaf96fcf63d770ccd /src/glsl/nir/nir_intrinsics.h | |
| parent | d2719b6e4f6bdbbd29ac66903d3d9dad9bd01386 (diff) | |
nir: Implement lowered SSBO atomic intrinsics
The original GLSL IR intrinsics have been lowered to an internal
version that accepts a block index and an offset instead of a
SSBO reference.
v2 (Connor):
- Document the sources used by the atomic intrinsics.
Reviewed-by: Connor Abbott <[email protected]>
Reviewed-by: Kristian Høgsberg <[email protected]>
Diffstat (limited to 'src/glsl/nir/nir_intrinsics.h')
| -rw-r--r-- | src/glsl/nir/nir_intrinsics.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/glsl/nir/nir_intrinsics.h b/src/glsl/nir/nir_intrinsics.h index 8cab7ea0ae0..06f1b02383a 100644 --- a/src/glsl/nir/nir_intrinsics.h +++ b/src/glsl/nir/nir_intrinsics.h @@ -156,6 +156,32 @@ INTRINSIC(image_size, 0, ARR(), true, 4, 1, 0, INTRINSIC(image_samples, 0, ARR(), true, 1, 1, 0, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) +/* + * SSBO atomic intrinsics + * + * All of the SSBO 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 3 sources except CompSwap that takes 4. These + * sources represent: + * + * 0: The SSBO buffer index. + * 1: The offset into the SSBO buffer of the variable that the atomic + * operation will operate on. + * 2: The data parameter to the atomic function (i.e. the value to add + * in ssbo_atomic_add, etc). + * 3: For CompSwap only: the second data parameter. + */ +INTRINSIC(ssbo_atomic_add, 3, ARR(1, 1, 1), true, 1, 0, 0, 0) +INTRINSIC(ssbo_atomic_min, 3, ARR(1, 1, 1), true, 1, 0, 0, 0) +INTRINSIC(ssbo_atomic_max, 3, ARR(1, 1, 1), true, 1, 0, 0, 0) +INTRINSIC(ssbo_atomic_and, 3, ARR(1, 1, 1), true, 1, 0, 0, 0) +INTRINSIC(ssbo_atomic_or, 3, ARR(1, 1, 1), true, 1, 0, 0, 0) +INTRINSIC(ssbo_atomic_xor, 3, ARR(1, 1, 1), true, 1, 0, 0, 0) +INTRINSIC(ssbo_atomic_exchange, 3, ARR(1, 1, 1), true, 1, 0, 0, 0) +INTRINSIC(ssbo_atomic_comp_swap, 4, ARR(1, 1, 1, 1), true, 1, 0, 0, 0) + #define SYSTEM_VALUE(name, components, num_indices) \ INTRINSIC(load_##name, 0, ARR(), true, components, 0, num_indices, \ NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) |