Make sure video player is initialized for each video renderable

modules/video/include/screenspacevideo.h

@@ -40,6 +40,7 @@ class ScreenSpaceVideo : public ScreenSpaceRenderable {
 public:
     ScreenSpaceVideo(const ghoul::Dictionary& dictionary);
 
+    bool initializeGL() override;
     bool deinitializeGL() override;
     void update() override;
     void render() override;

modules/video/include/videoplayer.h

@@ -51,6 +51,8 @@ public:
     VideoPlayer(const ghoul::Dictionary& dictionary);
     ~VideoPlayer();
 
+    void initialize();
+
     // Video interaction
     void pause();
     void play();

modules/video/src/renderablevideosphere.cpp

@@ -224,6 +224,8 @@ void RenderableVideoSphere::initializeGL() {
     );
 
     ghoul::opengl::updateUniformLocations(*_shader, _uniformCache, UniformNames);
+
+    _videoPlayer.initialize();
 }
 
 void RenderableVideoSphere::deinitializeGL() {

modules/video/src/screenspacevideo.cpp

@@ -88,6 +88,12 @@ void ScreenSpaceVideo::render() {
     ScreenSpaceRenderable::render();
 }
 
+bool ScreenSpaceVideo::initializeGL() {
+    _videoPlayer.initialize();
+
+    return ScreenSpaceRenderable::initializeGL();
+}
+
 bool ScreenSpaceVideo::deinitializeGL() {
     _videoPlayer.destroy();
 

modules/video/src/videoplayer.cpp

@@ -360,6 +360,9 @@ void VideoPlayer::stepFrameBackward() {
     commandAsyncMpv(cmd);
 }
 
+void VideoPlayer::initialize() {
+    initializeMpv();
+}
 
 void VideoPlayer::initializeMpv() {
     _mpvHandle = mpv_create();

modules/video/src/videotileprovider.cpp

@@ -138,7 +138,7 @@ int VideoTileProvider::minLevel() {
 }
 
 int VideoTileProvider::maxLevel() {
-    // This is the level where above the tile is marked as unavailable and is no longer 
+    // This is the level where above the tile is marked as unavailable and is no longer
     // displayed. Since we want to display the tiles at all times we set the max level
     return 1337;
 }
@@ -147,7 +147,9 @@ float VideoTileProvider::noDataValueAsFloat() {
     return std::numeric_limits<float>::min();
 }
 
-void VideoTileProvider::internalInitialize() {}
+void VideoTileProvider::internalInitialize() {
+    _videoPlayer.initialize();
+}
 
 VideoTileProvider::~VideoTileProvider() {}