6 Replies Latest reply: Dec 27, 2008 10:18 AM by klsteven-vBdprK RSS

    Pictures look different in OpenGL/non-OpenGL mode

    klsteven-vBdprK Community Member
      I made a test:
      -turn OpenGL on
      -Make an "empty" sRGB picture (or any other RGB) (lets call the picture "testpic").
      -make a black/white gradient across the whole picture.
      -make a screenshot (lets call it "A" and save it)
      -close pictures
      -turn off OpenGL
      -open "testpic"
      -make a screenshot (lets call it "B" and save it)
      -close pictures and turn OGL on or off (doesn`t matter)

      -now open "A" and "B" and put them into one picture (as layer1 and layer2)
      -put layer2 in "difference"- mode

      What you see should be totally black, because there should not be any difference between "A" and "B" (which are layer1 and layer2 now), because those are screenshots of one and the
      same file. But I DO NOT see only black. There ARE differences!

      So here we have another OpenGL problem: One and the same file looks different when displayed with or without OpenGL!

      Geforce8600GT/512MB with latest driver / Vista32bit
      "OpenGL on" in this test means:
      All OpenGL options are turned on with exception of:
      "forcebilinear interpolation" and "vertical synchronization"