screenshot issue when rendering with OSPRay
In ParaView 5.4.0 with OSPRay 1.3.1, when rendering with OSPRay, if you try to save a screen capture larger than the current framebuffer, the resulting image is garbled. Dave DeMarle reports that a change to accumulation / progressive refinement in 5.4.0 is the root cause:
Yes it is the accumulation/progressive refinement in 5.4.0 that broke it. I just need to take tiling into account in vtkOSPRayRendererNode.cxx where I calculate canReuse to get a first order fix and maybe temporarily increase samples per pixel to accommodate for droppiing to to 1 pass when saving images.