diff options
| author | Louis-Francis Ratté-Boulianne <[email protected]> | 2019-10-12 00:05:03 -0400 |
|---|---|---|
| committer | Marge Bot <[email protected]> | 2020-03-03 12:28:23 +0000 |
| commit | 00746fa2dab0b55b113e3543420b79f01f91e5c1 (patch) | |
| tree | 2c1ef09a59f7285360366aff9508ab24b3b8c000 /src/mesa | |
| parent | 8b361df9cf73aae45fff7f766da46d585d903c92 (diff) | |
glsl/linker: add DisableTransformFeedbackPacking workaround
Some drivers (e.g. Panfrost) don't support packing of varyings when
used for transform feedback. This new constant ensures that any
varying used for xfb is aligned at the start of a slot and won't be
packed with other varyings.
Scenarios where transform feedback declarations are related to an
array element or a struct member will be handled in a subsequent
patch.
Signed-off-by: Louis-Francis Ratté-Boulianne <[email protected]>
Signed-off-by: Tomeu Vizoso <[email protected]> (Fix order of arguments to varying_matches())
Reviewed-by: Alyssa Rosenzweig <[email protected]>
Acked-by: Daniel Stone <[email protected]>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/2433>
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/main/mtypes.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h index 6d18d2f5de5..91fc71cfcfd 100644 --- a/src/mesa/main/mtypes.h +++ b/src/mesa/main/mtypes.h @@ -3975,6 +3975,15 @@ struct gl_constants GLboolean DisableVaryingPacking; /** + * Disable varying packing if used for transform feedback. This is needed + * for some drivers (e.g. Panfrost) where transform feedback requires + * unpacked varyings. + * + * This variable is mutually exlusive with DisableVaryingPacking. + */ + GLboolean DisableTransformFeedbackPacking; + + /** * UBOs and SSBOs can be packed tightly by the OpenGL implementation when * layout is set as shared (the default) or packed. However most Mesa drivers * just use STD140 for these layouts. This flag allows drivers to use STD430 |