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BUGZ-1119: workaround for race condition crash in QML rendering

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This commit is contained in:
Brad Davis 2019-08-13 15:47:59 -07:00
parent 03e3f38ff1
commit 3e862950a8
1 changed files with 9 additions and 2 deletions
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11
libraries/qml/src/qml/impl/RenderEventHandler.cpp
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@ -136,7 +136,6 @@ void RenderEventHandler::qmlRender(bool sceneGraphSync) {
resize();
if (_currentSize != QSize()) {
PROFILE_RANGE(render_qml_gl, "render");
GLuint texture = SharedObject::getTextureCache().acquireTexture(_currentSize);
@ -148,7 +147,15 @@ void RenderEventHandler::qmlRender(bool sceneGraphSync) {
} else {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
_shared->setRenderTarget(_fbo, _currentSize);
_shared->_renderControl->render();
// workaround for https://highfidelity.atlassian.net/browse/BUGZ-1119
{
// Serialize QML rendering because of a crash caused by Qt bug
// https://bugreports.qt.io/browse/QTBUG-77469
static std::mutex qmlRenderMutex;
std::unique_lock<std::mutex> qmlRenderLock{ qmlRenderMutex };
_shared->_renderControl->render();
}
}
_shared->_lastRenderTime = usecTimestampNow();
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);