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backends/drm: add workaround for an amdgpu adaptive sync cursor bug

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See https://gitlab.freedesktop.org/drm/amd/-/issues/3034 for details
This commit is contained in:
Xaver Hugl 2024-01-18 16:18:38 +01:00
parent 14749e91e9
commit 3d21e41bc9
1 changed files with 6 additions and 0 deletions
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6
src/backends/drm/drm_pipeline.cpp
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@ -264,8 +264,14 @@ DrmPipeline::Error DrmPipeline::prepareAtomicPresentation(DrmAtomicCommit *commi
return Error::None;
}
static const bool s_vrrCursorWorkaround = qEnvironmentVariableIntValue("KWIN_DRM_NO_VRR_CURSOR_WORKAROUND") == 0;
void DrmPipeline::prepareAtomicCursor(DrmAtomicCommit *commit)
{
if (s_vrrCursorWorkaround && m_pending.presentationMode != PresentationMode::VSync) {
// trigger a pageflip on the primary plane, as a workaround for https://gitlab.freedesktop.org/drm/amd/-/issues/3034
commit->addProperty(m_pending.crtc->primaryPlane()->srcX, 0);
}
auto plane = m_pending.crtc->cursorPlane();
const auto layer = cursorLayer();
plane->set(commit, QPoint(0, 0), gpu()->cursorSize(), QRect(layer->position().toPoint(), gpu()->cursorSize()));