To render 3d object loadded into Qt3d what free engine should i use ?
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m using Qt3d to load 3d models , now i want to be able to render them to image but render in high quality image output , do i need to use rendering engine ? which you recommend that is free to use and i could embed in to the application
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Qt3D uses OpenGL so you would normally render to the framebuffer and capture that. There is even a "Qt example":http://doc.qt.nokia.com/latest/opengl-grabber.html that shows how to do this.
To improve quality you need to render the scene with "better" settings - be they shaders, multisampling buffers, multiple passes etc. That is up to you to do though and it depends what you man by "high quality".
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well how can i get for example reflection effect
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"Let me google that for you":http://lmgtfy.com/?q=opengl+reflection
