On Monday, March 02, 2015 02:33:31 PM Ilia Mirkin wrote: > On Mon, Mar 2, 2015 at 2:32 PM, Jason Ekstrand <ja...@jlekstrand.net> wrote: > > > > > > On Mon, Mar 2, 2015 at 11:18 AM, Ilia Mirkin <imir...@alum.mit.edu> wrote: > >> > >> Hmmm... I was just looking at this code in connection to attepmting to > >> enable ARB_texture_stencil8, and it _seems_ like that should be if > >> (ARB_texture_stencil8) -- I didn't see what in ARB_stencil_texturing > >> had to do with being able to have a GL_STENCIL_INDEX* internal > >> format... > > > > > > I just pushed it because it does fix a bug... However, you do raise a good > > point. Maybe we should change the i965 driver to use GL_STENCIL_INDEX for > > the internal format for our internal stencil buffers. > > How do you end up with a GL_STENCIL_INDEX internal format in the first > place? Without ARB_texture_stencil8 that's not a thing, is it?
Eric added a ctx->Driver.BindRenderbufferTexImage hook which takes a (non-texture) renderbuffer and wraps it in a fake texture image. We use this in Meta's BlitFramebuffer implementation to be able to blit from non-texture renderbuffers. i965 also has a custom meta blit path for stencil, which uses the same approach. Thus, stencil textures :)
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