diff options
| author | Eduardo Lima Mitev <[email protected]> | 2019-07-10 09:48:21 +0200 |
|---|---|---|
| committer | Rob Clark <[email protected]> | 2019-10-18 21:11:54 +0000 |
| commit | f1d4fadf1bdc399be515fc21bea3c2832e802f3e (patch) | |
| tree | 3c33c78257bbf3a55a873a7765816b05f19af666 /src/compiler/nir/nir.h | |
| parent | 27df3e015bd1c0f74461b05a9f5b8c1a3fdf6ee5 (diff) | |
nir: Add new texop nir_texop_tex_prefetch
This is like nir_texop_tex, but signals that the sampling coordinates
are immutable during the shader stage, in a way that allows the HW
that supports pre-dispatching sampling operations to pre-fetch
the result prior to scheduling the shader stage.
This is introduced to support the feature in Freedreno. Adreno HW
from a4xx supports it.
A NIR pass introduced later in this series will detect sampling
operations that are eligible for pre-dispatch, and replace
nir_texop_tex by this new op, to tell the backend to enable
pre-fetch.
Signed-off-by: Rob Clark <[email protected]>
Reviewed-by: Kristian H. Kristensen <[email protected]>
Diffstat (limited to 'src/compiler/nir/nir.h')
| -rw-r--r-- | src/compiler/nir/nir.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h index 5c98aeefc66..43c904913d6 100644 --- a/src/compiler/nir/nir.h +++ b/src/compiler/nir/nir.h @@ -1736,6 +1736,7 @@ typedef enum { nir_texop_samples_identical, /**< Query whether all samples are definitely * identical. */ + nir_texop_tex_prefetch, /**< Regular texture look-up, eligible for pre-dispatch */ } nir_texop; typedef struct { |