WidgetSpriteVideo overlapping

[eugene.litvinov]

I try realize next logic: I have two gui elements, two WidgetSpriteVideo - I need place one over next, and set to next widget alpha 0.5f. So I need blend to WidgetSpriteVideo (see screenshot)

 

I have question: is it possible to change alpha of one gui element?

 

I try to arrange WidgetSpriteVideo one over second:

 

WidgetVBox mainPanel = new WidgetVBox(gui);
gui.addChild(mainPanel, 0);

WidgetSpriteVideo facePanel_1 = new WidgetSpriteVideo(gui, "samples/widgets/videos/winter.ogv");
mainPanel.addChild(facePanel_1, GUI_ALIGN_BACKGROUND);

WidgetSpriteVideo facePanel_2 = new WidgetSpriteVideo(gui, "samples/widgets/videos/sanctuary.ogv");
mainPanel.addChild(facePanel_2, GUI_ALIGN_OVERLAP);

 

This is work fine when added to engine.getGui().

Then I try to add this on skinned mesh:

Node facePanelNode = engine.editor.getNodeByName("robotFacePanel");

ObjectGuiMesh objectGuiMesh = node_cast(facePanelNode);

Gui gui = objectGuiMesh.getGui();

WidgetVBox mainPanel = new WidgetVBox(gui);
gui.addChild(mainPanel, 0);

facePanel_1 = new WidgetSpriteVideo(gui, "samples/widgets/videos/winter.ogv");
mainPanel.addChild(facePanel_1, GUI_ALIGN_BACKGROUND);

facePanel_2 = new WidgetSpriteVideo(gui, "samples/widgets/videos/sanctuary.ogv");
mainPanel.addChild(facePanel_2, GUI_ALIGN_OVERLAP);

But in this case one WidgetSpriteVideo not cover second, see screenshot:

 

Is it some another technique when we work with ObjectGuiMesh instead of Gui?

[frustum]

Try to set alpha-blending on sprite:

 

sprite.setBlendFunc(GUI_BLEND_SRC_ALPHA,GUI_BLEND_ONE_MINUS_SRC_ALPHA);
sprite.setColor(vec4(1.0f,1.0f,1.0f,0.5f));