> 2008/6/23 Roderick Colenbrander <[EMAIL PROTECTED]>: > > Hi, > > > > I don't think we should implement it this way. For instance on GeforceFX > cards blending is performed in software. Not too long ago (before 1.0) I > also sent a patch for this e.g. by doing an extension check. I think I > checked for ARB_color_buffer_float in combination with half pixel support. > > > The format already requires ARB_HALF_FLOAT_PIXEL, which is supported > by GF FX. The format also requires ARB_TEXTURE_FLOAT to work properly, > which as far as I can see from the list at Delphi3D isn't supported by > GF FX. The next patch adds this extension check. Wrt > ARB_COLOR_BUFFER_FLOAT, I'm not sure how it would imply post ps > blending support?
The extension itself doesn't imply it but since it isn't supported on hardware like the GeforceFX which doesn't offer it. Further Ati offers blending on Radeon >= 9500 GPUs and offers the extension ARB_COLOR_BUFFER_FLOAT. Not sure if they offer half pixel though. Roderick -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer
