Does render-to-texture work with Pbuffers?

OpenGL Development JOGL Development
#1

I’m trying to write some code which uses a Pbuffer as a fall-back in cases where FBO is not supported (older cards). I am requesting render-to-texture using setPbufferRenderToTexture, however the resulting chosen capabilities are always always indicate render-to-texture is false. Does this capability work on Windows XP platforms?

#2

Your card likely doesn’t support the appropriate extension… http://www.opengl.org/registry/specs/ARB/wgl_render_texture.txt

You’ll need to use one of the old fall backs like glReadPixels()