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bflatasticandClaude Opus 5.5
9d85d4f116
Cause: Auto dropped to Half below 75 % magnification, so text between 50 % and 75 % was rendered with fewer pixels than the screen shows and looked soft. Below 100 % the frame texture was minified with a plain bilinear sampler and no mip levels (Full at 46 % skipped most frame pixels), so edges stair-stepped. Fix: - Auto renders the pixels the magnification needs, as in After Effects: the coarsest whole factor that still gives every screen pixel a rendered one (Full above 50 %, Half down to 33.3 %, Third down to 25 %, Quarter below). - GPU frames: the display texture carries a full mip chain, each level the 2 x 2 mean of the one above (display.wgsl `mip`, same bind group layout as `display`), sampled trilinearly with Viewer Zoom Quality More Accurate (Faster keeps the nearest pixel of the full-size frame). - CPU frames (egui-wgpu textures have no mips): uploaded averaged down by the whole factor that leaves about one texel per screen pixel, the same box average as the texture-limit fit (#201), re-uploaded when the magnification calls for another factor; drawn with texture coordinates that keep each texel over its pixels when the size isn't a multiple. Show Channel / exposure textures follow. Tests: gpu tests::display_frames_are_mipmapped (level count and level 1 = 2 x 2 means of level 0), viewer_tools auto_resolution_follows_the_magnification (60 % was Half) and minified_frames_keep_their_texels_in_place. Co-Authored-By: Claude Opus 5.5 <[email protected]>