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backends/drm: only use atomic gamma size with AMS

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For some reason the property exists with legacy, too. If you try to set
legacy gamma with atomic gamma size it'll fail
This commit is contained in:
Xaver Hugl 2021-12-11 23:43:32 +01:00
parent 58e5a5c9f7
commit 3fb14035cd
1 changed files with 5 additions and 3 deletions
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8
src/backends/drm/drm_object_crtc.cpp
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@ -86,9 +86,11 @@ void DrmCrtc::setNext(const QSharedPointer<DrmBuffer> &buffer)
int DrmCrtc::gammaRampSize() const
{
// limit atomic gamma ramp to 4096 to work around https://gitlab.freedesktop.org/drm/intel/-/issues/3916
if (auto prop = getProp(PropertyIndex::Gamma_LUT_Size); prop && prop->current() <= 4096) {
return prop->current();
if (gpu()->atomicModeSetting()) {
// limit atomic gamma ramp to 4096 to work around https://gitlab.freedesktop.org/drm/intel/-/issues/3916
if (auto prop = getProp(PropertyIndex::Gamma_LUT_Size); prop && prop->current() <= 4096) {
return prop->current();
}
}
return m_crtc->gamma_size;
}