[Bf-cycles] Possible faster (x2) Viewport Border rendering complex scenes
David Black
db4tech at yahoo.co.uk
Sun Apr 14 19:08:26 CEST 2013
Hi Brecht,
*Possible Faster Viewport Border Rendering Complex Scenes:*
Nothing to do with my previously mentioned half resolution option for
faster Viewport rendering.
There may be a way to speed up viewport border rendering for complex
scenes. While preforming some tests, I noticed on complex scenes, where
only a small area of the viewport is selected for border rendering,
there is a huge render speed difference dependent on what is displayed
in the rest of the viewport presently not being rendered. Tested in
camera view with 2 GTX 580's and on a Laptop with a GTX580m.
*Test Method:*
Selected a small region (top right) of the viewport for border
rendering on a complex scene, moved the same region around different
parts of the viewport and noticed a huge render speed up when complex
areas of the scene not presently being rendered are moved outside of the
viewport view.
It seems solid OpenGL drawing the rest of a complex scene while border
region is rendering is the culprit, could having the rest of the scene
draw in wireframe mode only, instead of solid, outside of the border
render region provide a faster viewport border render for everyone?
*Results:**
**Border render small square top right of viewport complex scene:*
2 GTX 580 16 seconds, GTX 580m 32 seconds
*Same border region moved to bottom left of viewport:*
2 GTX 580 5 seconds, GTX 580m 14 seconds
Thank you for your time,
David
--
3d-designs-davidblack.blogspot.com
<http://www.3d-designs-davidblack.blogspot.com>
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