[vtk-developers] Re:Modifications to vtkOpenGLPolyDataMapper.cxx vtkOpenGLProperty.cxx

[Sebastien BARRE]

At 11/7/2002 06:21 PM, John Biddiscombe wrote:
>Here's the code (I hope I've got the right ones!)

I ran sphere-bench:

   - GeForce 4 MX
   - intel running Windows NT 5.1
   - VTK 4.1.1 (rev: 1.1390, 2002/11/07 03:45:10)
   - Win32OpenGL
   - Visual is 1600x1200, truecolor/truecolor/32
   - Tcl/Tk 8.4.0
   - window was 1000 x 1000

No diff when surface shading is enabled. I performed the following test in 
wireframe mode:

a) Current CVS

     32x32  :  115.1 kpolys/s
     64x64  :  264.4 kpolys/s
     96x96  :  541.0 kpolys/s
    128x128 :  967.1 kpolys/s
    256x256 : 1548.9 kpolys/s

b) With your patch

     32x32  :  115.1 kpolys/s
     64x64  :  157.2 kpolys/s
     96x96  :  154.6 kpolys/s
    128x128 :  161.1 kpolys/s
    256x256 :  162.4 kpolys/s

Perf hit is huge, backing up what you said.
I don't think we should go this way.

--
Sebastien Barre