Keith Whitwell wrote: > Roland Scheidegger wrote: >> Keith Whitwell wrote: >> I think Rune is rather refering to the fact that you can't change (not >> with "legal" means at least) the constant you got with >> _mesa_add_unnamed_constant. > > Ah right. I missed that. > >> I think there exist at least 2 solutions for that. The clean way would >> probably be to add some more INTERNAL_STATE (like i965 driver uses) so >> you use _mesa_add_state_reference instead, in this case mesa's shader >> code would need to update program parameter based on the drawable >> information - I'm not sure if accessing a driver's drawable >> information there would get messy). The easier solution would probably >> be to just directly manipulate the ParameterValues entry associated >> with the constant you added, easy though it might be considered >> somewhat hackish. Just don't forget you not only have to update the >> "constant" within r300UpdateWindow (if the currently bound fp requires >> it), but also when the active fp is switched to another one (and make >> sure that a parameter upload is actually triggered if it not already >> is upon drawable changes). > > I think the parameter approach is probably the right one. This would > require that there be a callback into the driver to get this state, and > more importantly, the driver would have to set a bit in ctx->NewState > (perhaps _NEW_BUFFERS) to indicate that a statechange has occurred which > would affect that internal state atom.
Thank you. I've hit a bit of a problem: I was planning to have state flags returned from a callback make_state_flags(). something like: ctx->Driver.GetGenericStateFlags(state); The problem being that the context ctx is not a parameter in make_state_flags(). Is there smart way of solving this? Rune Petersen ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
