diff options
| author | Iago Toral Quiroga <[email protected]> | 2017-07-21 08:32:24 +0200 |
|---|---|---|
| committer | Emil Velikov <[email protected]> | 2017-08-03 00:19:06 +0100 |
| commit | ce731e11465ededae4eb1e61391a3c6c3f1abfbf (patch) | |
| tree | ec320484694677ee905701103cf61e4ea072af7e | |
| parent | 4bfe327622eec10f5edcc4a3cdcbcd3e869f9910 (diff) | |
anv: only expose up to 28 vertex attributes
The EU limit of 128 GRFs should allow 32 vertex elements of 4 GRFs.
However, the maximum allowed value of "Vertex URB Entry Read Length"
in SIMD8 is 15. And 15 * 8 = 120 gives us a limit of 30 vertex elements.
Because we also need to reserve a vertex buffer to upload
VertexIndex/InstanceIndex and another to upload DrawID when needed,
we can only expose 28.
Cc: "17.2" <[email protected]>
Reviewed-by: Lionel Landwerlin <[email protected]>
(cherry picked from commit 31f1863ace73d31a579e5c36252a957818ad09cf)
| -rw-r--r-- | src/intel/vulkan/anv_private.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h index ad82c77ec15..8eeb12349cf 100644 --- a/src/intel/vulkan/anv_private.h +++ b/src/intel/vulkan/anv_private.h @@ -87,7 +87,7 @@ struct gen_l3_config; */ #define ANV_HZ_FC_VAL 1.0f -#define MAX_VBS 31 +#define MAX_VBS 28 #define MAX_SETS 8 #define MAX_RTS 8 #define MAX_VIEWPORTS 16 |