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panfrost: Use PIPE_CAP_VERTEX_ATTRIB_ELEMENT_ALIGNED_ONLY

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..instead of 4BYTE_ALIGNED_ONLY. This is more correct and avoids
needless repacking. Noticed in Firefox, which was hitting the vbuf
translate path.

Fixes: e03622e50f ("panfrost: Set STRIDE_4BYTE_ALIGNED_ONLY")
Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19761>
This commit is contained in:
Alyssa Rosenzweig 2022-10-30 21:24:34 -04:00 • committed by Marge Bot
parent 42212a9bfd
commit c567e5528f
1 changed files with 10 additions and 2 deletions
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12
src/gallium/drivers/panfrost/pan_screen.c
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@ -210,8 +210,16 @@ panfrost_get_param(struct pipe_screen *screen, enum pipe_cap param)
case PIPE_CAP_QUERY_TIMESTAMP:
return is_gl3;
/* TODO: Where does this req come from in practice? */
case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
/* The hardware requires element alignment for data conversion to work
* as expected. If data conversion is not required, this restriction is
* lifted on Midgard at a performance penalty. We conservatively
* require element alignment for vertex buffers, using u_vbuf to
* translate to match the hardware requirement.
*
* This is less heavy-handed than the 4BYTE_ALIGNED_ONLY caps, which
* would needlessly require alignment even for 8-bit formats.
*/
case PIPE_CAP_VERTEX_ATTRIB_ELEMENT_ALIGNED_ONLY:
return 1;
case PIPE_CAP_MAX_TEXTURE_2D_SIZE: