Re: [Mesa-dev] [PATCH v2] mesa/meta: Use interpolateAtOffset for 16x MSAA copy blit

On 09/29/2015 07:57 AM, Neil Roberts wrote: > Previously there was a problem in i965 where if 16x MSAA is used then > some of the sample positions are exactly on the 0 x or y axis. When > the MSAA copy blit shader interpolates the texture coordinates at > these sample positions it was possible

Re: [Mesa-dev] [PATCH v2] mesa/meta: Use interpolateAtOffset for 16x MSAA copy blit

Ian Romanick writes: >> To fix that this patch makes it use interpolateAtOffset in the blit >> shader whenever 16x MSAA is used and the GL_ARB_gpu_shader5 extension >> is available. This forces it to interpolate the texture coordinates at >> the pixel center to avoid these

Re: [Mesa-dev] [PATCH v2] mesa/meta: Use interpolateAtOffset for 16x MSAA copy blit

Bump. Does anybody have some time to review this patch? I think it's the only one holding up landing 16x MSAA support. The following three only have an ack-by but I'm hoping it is reasonable to just push the branch with that. i965/meta: Support 16x MSAA in the meta stencil blit

[Mesa-dev] [PATCH v2] mesa/meta: Use interpolateAtOffset for 16x MSAA copy blit

Previously there was a problem in i965 where if 16x MSAA is used then some of the sample positions are exactly on the 0 x or y axis. When the MSAA copy blit shader interpolates the texture coordinates at these sample positions it was possible that it would jump to a neighboring texel due to