1 Reply Latest reply on Jan 5, 2009 3:02 PM by Kevin Goldsmith

    Max execution time per pixel causing rendering differences between GPUs

    T Beddard Level 1
      Is there a maximum execution time different graphics cards will process each pixel as part of the shader? When running the Raytracing script ( http://www.adobe.com/cfusion/exchange/index.cfm?event=extensionDetail&loc=en_us&extid=1634 018 ) on my Macbook Pro (256MB ATI Radeon X1600) then many pixels come out grey or black as the loop per pixel that is tracing the ray takes longer than some built in execution limit.

      I first noticed this with a filter I've been working on which looks fine on my alu iMac (512MB Nvidia GeForce 8800 GS) but rubbish on the Macbook Pro or older iMacs.

      Are there ways around this limit like splitting long for or while loops into smaller chunks, or is it just a hardwired max execution time per pixel?