From: Stephane Jaeger (stephane.jaeger++at++imag.fr)
Date: 04/11/2001 04:51:23
Hi,
I am currently rendering a scene with one channel and using a texture of
the previously rendered scene with another channel. To update my
texture, I use the pfTexture->subload method to read the backbuffer
after the first channel's rendering. In the meantime I'd like to blur my
texture in a very fast way. Therefore I thought It would be fine to use
the GL_CONVOLUTION_2D_EXT OpenGl extension as described in Angus
Dorbie's web site. The trouble is that it seems this extension needs a
glReadPixel to operate whereas I am using a pfTexture->subload. I d like
to keep the subload since I think it's the fastest way to transfer the
framebuffer to a texture, yet I don t know how to handle the
GL_CONVOLUTION_2D_EXT. Does anybody have any idea about this ? How to
improve/save performance ?
Thanks,
Stephane
This archive was generated by hypermail 2b29 : Wed Apr 11 2001 - 04:51:30 PDT