| Commit message (Collapse) | Author | Age | Files | Lines |
|---|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
vega pixels runs the same scripts as tui --dump and writes each frame as
an image: the view's cells (only those on screen are evaluated) become
glyphs, each drawn once per size with the exact area of its curves, in its
tone's colour on its row's background. No page, no scene in between. A
1920x1350 grid takes 12 ms a frame here, writing the image included.
Symbol files carry the font's line now (format 3: ascent and descent where
format 2 kept zeros), the cell height and baseline; and the build tool takes
fonts in order, later ones filling the codes earlier ones lack: a CJK font
alone drew ambiguous-width arrows two cells wide in a one-cell grid, which
the new check caught, so a monospace Latin font comes first and Hangul after.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Each size's symbols are drawn on the CPU into one 8-bit atlas, every pixel
the exact area its curves cover, and text is a quad per glyph reading it.
A 1080p page of 11,382 glyphs composes in 1.07 ms at 16 px (it took 525 ms
computing coverage per fragment), and the composed pixels are the CPU
raster's exactly (worst difference 0 for DejaVu's ASCII, 1 for Noto's
11,172 Hangul syllables).
Computing coverage on the GPU lost on both counts: a compute pass filling
the atlas took 5-13x longer than one Cortex-A76 core (35 against 2.7 ms at
16 px), and its faster sorting-network form computed whole rows wrongly
under this Mesa V3D. Coverage now has one implementation, in C, and the
shaders only compose. vega_symbol_raster takes a row stride to draw into
the atlas in place.
|
|
|
src/ held two parts, the surfaces that show modules to people and the
symbol format with its CPU and GPU drawing. As in Pure (design 009), top
level directories are now the parts, and the README says what each builds.
|
