[Interest] Qt3D: Why DepthBuffer is required to be cleared to draw a simple triangle?

Midori Yakumo macrobull.acg.0 at gmail.com
Sun Jul 10 16:57:45 CEST 2016

In this QML code:

I want to draw a triangle like this C++ code:

I found that I have to clear both color and depth buffer, that's weird:

activeFrameGraph: ClearBuffers { buffers: ClearBuffers.ColorDepthBuffer //
Why not ColorBuffer only??? clearColor: Qt.rgba(0.2, 0.3, 0.3, 1.0)
RenderSurfaceSelector { } }
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