On 25.08.2011 22:42, Christoph Bumiller wrote: > On 25.08.2011 22:40, Zack Rusin wrote: >> On Thursday, August 25, 2011 04:30:26 PM Christoph Bumiller wrote: >>> Putting the resource type in the resource declaration instead of the >>> instruction isn't necessarily smart considering indirect resource access >>> ... I just hope the person implementing it remembers to provide a base >>> array address so we can identify the type. >>> >>> ( think of something like: LOAD DST[0], SRC[0], RES[ADDR[0].x - 4] ) >>> what's the type of resource -4 ? >> I don't think that's a meaningful objection. What's the sampler of SAMP[-4]? >> What's the source register of SRC[-4] ? In other words bug in a shader is a >> bug in a shader. Also indirect addressing on resources seems silly. > Of course -4 isn't a valid resource, I just meant to emphasize that I > cannot tell at all the resource to be accessed. > ADDR[0].x - 4 should of course be >= 0 and valid. > > And, maybe it seems silly to you, but OpenGL allows it. > > uniform sampler2D tex[4]; > uniform int i; make that "in int i;", so you don't get the idea to emulate it.
> ... = texture(tex[i - 4]); > > Yes. > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/mesa-dev _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
