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backend/drm: use drmModeFormatModifierBlobIterNext

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This avoids open-coding our own logic. The resulting code is more
readable.

References: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/146
This commit is contained in:
Simon Ser 2021-11-03 16:44:42 +01:00 committed by Simon Zeni
parent 4377b55292
commit a15c327718
2 changed files with 4 additions and 12 deletions
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14
backend/drm/drm.c
View file

@ -142,17 +142,9 @@ static bool add_plane(struct wlr_drm_backend *drm,
goto error;
}
struct drm_format_modifier_blob *data = blob->data;
uint32_t *fmts = (uint32_t *)((char *)data + data->formats_offset);
struct drm_format_modifier *mods = (struct drm_format_modifier *)
((char *)data + data->modifiers_offset);
for (uint32_t i = 0; i < data->count_modifiers; ++i) {
for (int j = 0; j < 64; ++j) {
if (mods[i].formats & ((uint64_t)1 << j)) {
wlr_drm_format_set_add(&p->formats,
fmts[j + mods[i].offset], mods[i].modifier);
}
}
drmModeFormatModifierIterator iter = {0};
while (drmModeFormatModifierBlobIterNext(blob, &iter)) {
wlr_drm_format_set_add(&p->formats, iter.fmt, iter.mod);
}
drmModeFreePropertyBlob(blob);

2
meson.build
View file

@ -104,7 +104,7 @@ wayland_server = dependency('wayland-server',
default_options: wayland_project_options,
)
drm = dependency('libdrm', version: '>=2.4.105')
drm = dependency('libdrm', version: '>=2.4.108')
gbm = dependency('gbm', version: '>=17.1.0')
xkbcommon = dependency('xkbcommon')
udev = dependency('libudev')