On 25.08.2011 06:42, Zack Rusin wrote: > On Wednesday, August 24, 2011 10:14:48 PM Bryan Cain wrote: >> Like Dave said, the GLSL->TGSI translator needs to account for this. > Probably not, at least yet. All of those instructions are DX10.1 level > instructions which support splitting of samplers and the underlaying > resource, > we don't support that yet. > >> I'm not sure on how to initialize a resource in TGSI, though. Is there >> a state tracker that uses it that could provide an example? > I don't think any of the open drivers actually implement this scheme quite > yet. The resources are declared using ureg_DECL_resource, the resulting code > would look something like: > DCL RES[0], 2D, FLOAT > > LOAD DST[0], SRC[0], RES[0] > 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 also have an unrelated TGSI question: has it been determined exactly >> what the source regs for TXF should be and what order they should be in? > Two four component integer vectors, first is the coordinate the other is the > offset. I think gpu_program4 specifies that instruction. > > Ultimately I wanted to replace all the texture sampling/fetching/loading > instructions with the DX10.1 variants. There's less of them and they're > cleaner. Drivers which don't support that split could just ignore it. For > various reasons I never finished it so this texture sampling code is quite > frankly half-assed, I'd just use the documented/driver implemented opcodes > and > leave others untouched. > > z > _______________________________________________ > 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
