diff options
author | Simon Ser <contact@emersion.fr> | 2021-11-24 21:42:08 +0100 |
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committer | Simon Zeni <simon@bl4ckb0ne.ca> | 2021-11-26 16:40:53 +0000 |
commit | 83d78f9fd415a1110e888b3c5f9cc9fb79627217 (patch) | |
tree | 5e857f7ae986b99aa8d086f393e12a70cff6457b /include/wlr/render/allocator.h | |
parent | ef1669d33e15134e09d30c6989d53773629fd9ba (diff) |
render: add DMA-BUF docs
Document some of the assumptions for DMA-BUF buffer sharing and
modifiers.
Diffstat (limited to 'include/wlr/render/allocator.h')
-rw-r--r-- | include/wlr/render/allocator.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/wlr/render/allocator.h b/include/wlr/render/allocator.h index 3caeffa0..3150e36c 100644 --- a/include/wlr/render/allocator.h +++ b/include/wlr/render/allocator.h @@ -51,6 +51,18 @@ void wlr_allocator_destroy(struct wlr_allocator *alloc); * * When the caller is done with it, they must unreference it by calling * wlr_buffer_drop. + * + * The `format` passed in indicates the format to use and the list of + * acceptable modifiers. The order in which modifiers are listed is not + * significant. + * + * When running with legacy drivers which don't support explicit modifiers, the + * allocator must recognize two modifiers: INVALID (for implicit tiling and/or + * compression) and LINEAR. + * + * The allocator must return a buffer using one of the modifiers listed. In + * particular, allocators must not return a buffer with an implicit modifier + * unless the user has allowed it by passing INVALID in the modifier list. */ struct wlr_buffer *wlr_allocator_create_buffer(struct wlr_allocator *alloc, int width, int height, const struct wlr_drm_format *format); |