14 Replies Latest reply on May 30, 2014 8:11 AM by hjeldin

    textureProjOffset on HD4000

    hjeldin

      Hello everyone,

      i've encountered an odd bug on my Intel HD4000.

      Using textureProjOffset in a GLSL shader to sample the shadow texture on different locations leads to some very bad results both in performance AND image quality: rendering drops from 20ms/frame to 50-60 ms/frame and most of the time, shadows are projected just wrong or not projected at all.

       

      I notice that this problem is not present on my other setup with HD4600, nor on my discrete card (nvidia GT750M SLI).

       

      Drivers are updated, reference hardware is a last generation Mac Mini with Windows 7 x64.