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backends/drm: drop explicit modifiers completely if no output config works

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Removing modifiers one by one creates a huge amount of combinations that
can make KWin hang for a long time in some cases. Instead of doing that,
leave it up to Mesa to pick a modifier when a setup doesn't work, which
will generally result in the least amount of bandwidth used and should be
able to power all output combinations.
This commit is contained in:
Xaver Hugl 2022-09-02 13:40:58 +02:00
parent 6bb4ebdf04
commit f70caec4b3
1 changed files with 4 additions and 3 deletions
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7
src/backends/drm/drm_pipeline.cpp
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@ -504,11 +504,12 @@ bool DrmPipeline::pruneModifier()
return false; return false;
} }
auto &modifiers = m_pending.formats[m_pending.layer->currentBuffer()->buffer()->format()]; auto &modifiers = m_pending.formats[m_pending.layer->currentBuffer()->buffer()->format()];
if (modifiers.count() <= 1) { if (modifiers.empty()) {
return false; return false;
} } else {
modifiers.removeOne(m_pending.layer->currentBuffer()->buffer()->modifier()); modifiers.clear();
return true; return true;
}
} }
bool DrmPipeline::needsModeset() const bool DrmPipeline::needsModeset() const