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drm: add AQ_NO_MODIFIERS to try to mitigate hardware limitations (#77)

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Ikalco 2024-09-05 19:00:39 -05:00 committed by GitHub
parent aac97a1fd1
commit a8eb8ae014
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2 changed files with 9 additions and 3 deletions
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1
docs/env.md
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@ -7,6 +7,7 @@ Unless specified otherwise, a variable is enabled if and only if it's set to `1`
`AQ_DRM_DEVICES` -> Set an explicit list of DRM devices (GPUs) to use. It's a colon-separated list of paths, with the first being the primary. E.g. `/dev/dri/card1:/dev/dri/card0`
`AQ_NO_ATOMIC` -> Disables drm atomic modesetting
`AQ_MGPU_NO_EXPLICIT` -> Disables explicit syncing on mgpu buffers
`AQ_NO_MODIFIERS` -> Disables modifiers for DRM buffers
### Debugging

7
src/backend/drm/DRM.cpp
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@ -382,9 +382,14 @@ bool Aquamarine::CDRMBackend::checkFeatures() {
}
drmProps.supportsAsyncCommit = drmGetCap(gpu->fd, DRM_CAP_ASYNC_PAGE_FLIP, &cap) == 0 && cap == 1;
drmProps.supportsAddFb2Modifiers = drmGetCap(gpu->fd, DRM_CAP_ADDFB2_MODIFIERS, &cap) == 0 && cap == 1;
drmProps.supportsTimelines = drmGetCap(gpu->fd, DRM_CAP_SYNCOBJ_TIMELINE, &cap) == 0 && cap == 1;
if (envEnabled("AQ_NO_MODIFIERS")) {
backend->log(AQ_LOG_WARNING, "drm: AQ_NO_MODIFIERS enabled, disabling modifiers for DRM buffers.");
drmProps.supportsAddFb2Modifiers = false;
} else
drmProps.supportsAddFb2Modifiers = drmGetCap(gpu->fd, DRM_CAP_ADDFB2_MODIFIERS, &cap) == 0 && cap == 1;
if (envEnabled("AQ_NO_ATOMIC")) {
backend->log(AQ_LOG_WARNING, "drm: AQ_NO_ATOMIC enabled, using the legacy drm iface");
impl = makeShared<CDRMLegacyImpl>(self.lock());