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platforms/wayland: Present buffers even if nothing has been changed

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Present buffers event if nothing has been changed on the screen because
we want to receive the frame callback.
This commit is contained in:
Vlad Zahorodnii 2020-11-20 12:33:57 +02:00
parent 58cb4de1b8
commit bc9df67c79
1 changed files with 0 additions and 16 deletions
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16
plugins/platforms/wayland/egl_wayland_backend.cpp
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@ -378,22 +378,6 @@ void EglWaylandBackend::endFrame(int screenId, const QRegion &renderedRegion, co
{ {
EglWaylandOutput *output = m_outputs[screenId]; EglWaylandOutput *output = m_outputs[screenId];
QRegion damage = damagedRegion.intersected(output->m_waylandOutput->geometry()); QRegion damage = damagedRegion.intersected(output->m_waylandOutput->geometry());
if (damage.isEmpty()) {
// If the damaged region of a window is fully occluded, the only
// rendering done, if any, will have been to repair a reused back
// buffer, making it identical to the front buffer.
//
// In this case we won't post the back buffer. Instead we'll just
// set the buffer age to 1, so the repaired regions won't be
// rendered again in the next frame.
if (!renderedRegion.intersected(output->m_waylandOutput->geometry()).isEmpty()) {
glFlush();
}
output->m_bufferAge = 1;
return;
}
presentOnSurface(output, damage); presentOnSurface(output, damage);
if (supportsBufferAge()) { if (supportsBufferAge()) {