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66 lines
2.8 KiB
66 lines
2.8 KiB
From e413264fab376f043d4dce73fc528cac6c3466a0 Mon Sep 17 00:00:00 2001
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From: Adam Williamson <awilliam@redhat.com>
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Date: Wed, 6 Oct 2021 10:20:58 -0700
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Subject: [PATCH] Fix wrong cursor hotspot under Wayland on VMs
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This backports the key parts of 998bbf4 to the 5.22 branch,
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where the code is substantially different. It solves a problem
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where the click point is slightly offset from the position
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indicated by the displayed cursor when running on Wayland in
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many VM configurations (e.g. qemu with qxl or virtio GPU).
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Signed-off-by: Adam Williamson <awilliam@redhat.com>
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---
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src/plugins/platforms/drm/drm_output.cpp | 12 +++++++++---
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src/plugins/platforms/drm/drm_output.h | 2 +-
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2 files changed, 10 insertions(+), 4 deletions(-)
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diff --git a/src/plugins/platforms/drm/drm_output.cpp b/src/plugins/platforms/drm/drm_output.cpp
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index 917bb857d..7ee387219 100644
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--- a/src/plugins/platforms/drm/drm_output.cpp
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+++ b/src/plugins/platforms/drm/drm_output.cpp
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@@ -102,10 +102,15 @@ bool DrmOutput::hideCursor()
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return drmModeSetCursor(m_gpu->fd(), m_crtc->id(), 0, 0, 0) == 0;
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}
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-bool DrmOutput::showCursor(DrmDumbBuffer *c)
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+bool DrmOutput::showCursor(DrmDumbBuffer *c, const QPoint &hotspot)
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{
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const QSize &s = c->size();
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- if (drmModeSetCursor(m_gpu->fd(), m_crtc->id(), c->handle(), s.width(), s.height()) == 0) {
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+ int ret = drmModeSetCursor2(m_gpu->fd(), m_crtc->id(), c->handle(), s.width(), s.height(), hotspot.x(), hotspot.y());
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+ if (ret == ENOTSUP) {
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+ // for NVIDIA case that does not support drmModeSetCursor2
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+ ret = drmModeSetCursor(m_gpu->fd(), m_crtc->id(), c->handle(), s.width(), s.height());
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+ }
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+ if (ret == 0) {
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if (RenderLoopPrivate::get(m_renderLoop)->presentMode == RenderLoopPrivate::SyncMode::Adaptive
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&& isCursorVisible()) {
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m_renderLoop->scheduleRepaint();
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@@ -122,7 +127,8 @@ bool DrmOutput::showCursor()
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return false;
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}
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- const bool ret = showCursor(m_cursor[m_cursorIndex].data());
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+ const Cursor * const cursor = Cursors::self()->currentCursor();
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+ const bool ret = showCursor(m_cursor[m_cursorIndex].data(), logicalToNativeMatrix(cursor->rect(), scale(), transform()).map(cursor->hotspot()));
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if (!ret) {
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qCDebug(KWIN_DRM) << "DrmOutput::showCursor(DrmDumbBuffer) failed";
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return ret;
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diff --git a/src/plugins/platforms/drm/drm_output.h b/src/plugins/platforms/drm/drm_output.h
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index 1f89f9064..af46c88a0 100644
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--- a/src/plugins/platforms/drm/drm_output.h
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+++ b/src/plugins/platforms/drm/drm_output.h
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@@ -45,7 +45,7 @@ public:
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///queues deleting the output after a page flip has completed.
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void teardown();
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void releaseGbm();
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- bool showCursor(DrmDumbBuffer *buffer);
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+ bool showCursor(DrmDumbBuffer *buffer, const QPoint &hotspot);
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bool showCursor();
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bool hideCursor();
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bool updateCursor();
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--
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2.32.0
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