D3D11_FILL_WIREFRAME order of magnitude slower with 3xx.xx drivers?

Graphics and GPU Programming Programming

Started by sensate December 09, 2012 10:48 PM

1 comment, last by sensate 11 years, 3 months ago

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December 09, 2012 10:48 PM

Has anyone else noticed that D3D11_FILL_WIREFRAME is an order of magnitude slower on 3xx.xx drivers for 480, 580 and 680 cards no matter what the render state is?
The nvidia drivers have become so incredibly unstable in wireframe on consumer cards that I resorted to geometry shaders for reasonable performance several months ago. I was merely curious.

Pixels are not little squares (and voxels are not little cubes).

http://alvyray.com/Memos/CG/Microsoft/6_pixel.pdf

http://www.derkreature.com

http://www.github.com/derkreature

https://vimeo.com/mdavidsonflux

MJP

20,295

December 09, 2012 11:59 PM

I never noticed any performance issues, but I definitely noticed that something changed 301.46 that made wireframe render differently. At work we have a suite of automated tests that use image comparisons to check for failures, and all of our tests with wireframe and line rendering failed when we updated our drivers.

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