Swizzling is implemented by the hardware. Nouveau doesn't implement it directly -- we just blit from a linear surface into a swizzled surface. Ideally you should be able to ignore swizzling entirely. However if an application uploads pre-swizzled data, you have to deal with it. This isn't possible with GL/DX, by the way... but obviously the driver embedded in an application can do it if it chooses. Nouveau never does. https://envytools.readthedocs.io/en/latest/hw/memory/g80-surface.html#blocklinear-surfaces Has an example of how blocklinear texture swizzling is done by the hardware as a function of the various parameters. Cheers, -ilia On Wed, Sep 19, 2018 at 7:26 PM, Fernando Sahmkow <fsahmkow27@xxxxxxxxx> wrote: > Thanks for the last info it was truely helpful. > > Anyways, I'm currently trying to implement 3D textures into yuzu, as far as > I know they are twiddled in a different manner to 2D textures. Could one of > you guys point me in the right direction? I've been meddling around: > https://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/nouveau/nv50/nv50_tex.c > but I can't see where the swizzling actualy takes place. > > _______________________________________________ > Nouveau mailing list > Nouveau@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/nouveau > _______________________________________________ Nouveau mailing list Nouveau@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/nouveau
