[Bug 82463] i965: Using EWA algorithm for isotropic case

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82463

--- Comment #17 from Iago Toral <itoral at igalia.com> ---
(In reply to Iago Toral from comment #16)
> Created attachment 114249 [details]
> texgrad piglit test rendering result (with patches)
> 
> This shows the result (in master) of the piglit test:
                            ^^^^^^
                            I meant with master + the 2 patches attached here

> bin/arb_shader_texture_lod-texgrad -auto -fbo
> 
> Rendering with texture and textureGrad are not the same. If we remove patch
> 1/2 so that we don't lower textureGrad to compute LOD manually, then both
> renderings look like the one on the left, which are different from the
> renderings we obtain with master.

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