[osg-users] HDR 32bit

OSG@dvp.co.il osg at dvp.co.il
Mon Sep 24 05:41:32 PDT 2007


I experienced similar result when I read the float data from the texture using 32 bit, but only rendering to 32 bit shouldn't decrease the FR that much. What card do u use and what interpolation do u set for the texture? (I think u must use NEAREST with GL_RGBA32F_ARB).
  ----- Original Message ----- 
  From: Benoit bossavit 
  To: OpenSceneGraph Users 
  Sent: Monday, September 24, 2007 2:25 PM
  Subject: [osg-users] HDR 32bit


  Hi all,
  I'm trying HDRR. My application (osg v1.2) turn in real time (>60fps) using FBO with texture 16bits (GL_RGBA16F_ARB), but when I try with FBO 32bits(GL_RGBA32F_ARB) my frame rate is null. Is it normal loosing almost all performances? :s 
  There is a minimal hardware configuration to do HDR32? There is something to do more than change the internal format of texture attached with FBO?
  If someone have an answer :)

  Thanks you

  bnua



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