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ScreenPanelNative: Don't try to render the framebuffer if the emulator is not actually active.

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This fixes an issue where the window draws with a gray background in macOS, and is see-through on Wayland-based desktops.
This commit is contained in:
Nadia Holmquist Pedersen
2021-12-09 01:57:02 +01:00
parent 14c6bba21f
commit f1c9b42b45
2 changed files with 24 additions and 15 deletions
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38
src/frontend/qt_sdl/main.cpp
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@ -714,6 +714,11 @@ bool EmuThread::emuIsRunning()
return (EmuRunning == 1);
}
bool EmuThread::emuIsActive()
{
return (RunningSomething == 1);
}
void ScreenHandler::screenSetupLayout(int w, int h)
{
@ -942,26 +947,29 @@ void ScreenPanelNative::paintEvent(QPaintEvent* event)
// fill background
painter.fillRect(event->rect(), QColor::fromRgb(0, 0, 0));
emuThread->FrontBufferLock.lock();
int frontbuf = emuThread->FrontBuffer;
if (!GPU::Framebuffer[frontbuf][0] || !GPU::Framebuffer[frontbuf][1])
if (emuThread->emuIsActive())
{
emuThread->FrontBufferLock.lock();
int frontbuf = emuThread->FrontBuffer;
if (!GPU::Framebuffer[frontbuf][0] || !GPU::Framebuffer[frontbuf][1])
{
emuThread->FrontBufferLock.unlock();
return;
}
memcpy(screen[0].scanLine(0), GPU::Framebuffer[frontbuf][0], 256 * 192 * 4);
memcpy(screen[1].scanLine(0), GPU::Framebuffer[frontbuf][1], 256 * 192 * 4);
emuThread->FrontBufferLock.unlock();
return;
}
memcpy(screen[0].scanLine(0), GPU::Framebuffer[frontbuf][0], 256*192*4);
memcpy(screen[1].scanLine(0), GPU::Framebuffer[frontbuf][1], 256*192*4);
emuThread->FrontBufferLock.unlock();
painter.setRenderHint(QPainter::SmoothPixmapTransform, Config::ScreenFilter != 0);
painter.setRenderHint(QPainter::SmoothPixmapTransform, Config::ScreenFilter!=0);
QRect screenrc(0, 0, 256, 192);
QRect screenrc(0, 0, 256, 192);
for (int i = 0; i < numScreens; i++)
{
painter.setTransform(screenTrans[i]);
painter.drawImage(screenrc, screen[screenKind[i]]);
for (int i = 0; i < numScreens; i++)
{
painter.setTransform(screenTrans[i]);
painter.drawImage(screenrc, screen[screenKind[i]]);
}
}
OSD::Update(nullptr);