Splitting COLRv1 content out

HinTak · Jul 27, 2023 · df4919c · df4919c
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diff --git a/skia-adventure/COLRv1.md b/skia-adventure/COLRv1.md
@@ -0,0 +1,73 @@
+This is a patch to adds 3 other OT-SVG hooks to FreeType2-demos. There is an extension on top of it, to
+add COLRv1 rendering, too.
+
+The COLRv1 extension currently has a limitation - it works by over-writing
+the SVG rendering with a toggle key, so it depends on the font having a SVG table. In one without, it overwrites
+the glyh rendering and does gray. (Hope to fix). So it is convenient that both Rsvg and Adobe SVG rendering are flawed.
+[Adobe SVG Native](https://github.com/adobe/svg-native-viewer/issues/185) , and [Rsvg issue](https://gitlab.gnome.org/GNOME/librsvg/-/issues/997).
+
+It is a toggle-key to toggle SVG<->COLRv1 rendering ("z" for "color layered glyphs" as for COLRv0),
+and overloads the palette toggle key ("C" for switching palettes for color-blind-friendiness in glyf mode)
+to switch CPAL entries. Binaries at the [FontVal binary archive](https://github.com/FontVal-extras/binary-archive/) ).
+
+## Skia COLRv1 Rendering
+
+Skia COLRv1:
+
+![Skia COLRv1](screenshots/ftgrid-colrv1.png)
+
+The glyf data:
+
+![Glyph](screenshots/ftgrid-glyf.png)
+
+Skia COLRv1 to Alpha channel:
+
+![Skia to Alpha](screenshots/ftgrid-kAlpha.png)
+
+Skia COLRv1 to Gray:
+
+![Skia to Gray](screenshots/ftgrid-kGray.png)
+
+## COLRv1 Glyphs vs SVG Glyphs, both rendered via Skia
+
+Skia COLRv1:
+
+![Skia COLRv1](screenshots/ftgrid-colrv1.png)
+
+Skia SVG:
+
+![Skia COLRv1](screenshots/ftgrid-SVG.png)
+
+Difficult to tell the difference by the naked eye. Here is the programmatic highlights (with ImageMagick's `compare`):
+
+![Skia COLRv1](screenshots/ftgrid-diff.png)
+
+## COLRv1 palettes
+
+index 0:
+
+![palette 0](screenshots/ftgrid-palette0.png)
+
+index 1:
+
+![palette 1](screenshots/ftgrid-palette1.png)
+
+index 2:
+
+![palette 2](screenshots/ftgrid-palette2.png)
+
+index 3:
+
+![palette 3](screenshots/ftgrid-palette3.png)
+
+index 4:
+
+![palette 4](screenshots/ftgrid-palette4.png)
+
+index 5:
+
+![palette 5](screenshots/ftgrid-palette5.png)
+
+index 6:
+
+![palette 6](screenshots/ftgrid-palette6.png)
diff --git a/skia-adventure/README.md b/skia-adventure/README.md
@@ -39,64 +39,3 @@ More screenshots about SVG Native in [the directory above](../svg-native/).
 Inkscape also have problems with this SVG ( https://gitlab.com/inkscape/inbox/-/issues/8857 , moved from
 https://gitlab.com/inkscape/inkscape/-/issues/4423 )
 
-## Skia COLRv1 Rendering
-
-Skia COLRv1:
-
-![Skia COLRv1](screenshots/ftgrid-colrv1.png)
-
-The glyf data:
-
-![Glyph](screenshots/ftgrid-glyf.png)
-
-Skia COLRv1 to Alpha channel:
-
-![Skia to Alpha](screenshots/ftgrid-kAlpha.png)
-
-Skia COLRv1 to Gray:
-
-![Skia to Gray](screenshots/ftgrid-kGray.png)
-
-## COLRv1 Glyphs vs SVG Glyphs, both rendered via Skia
-
-Skia COLRv1:
-
-![Skia COLRv1](screenshots/ftgrid-colrv1.png)
-
-Skia SVG:
-
-![Skia COLRv1](screenshots/ftgrid-SVG.png)
-
-Difficult to tell the difference by the naked eye. Here is the programmatic highlights (with ImageMagick's `compare`):
-
-![Skia COLRv1](screenshots/ftgrid-diff.png)
-
-## COLRv1 palettes
-
-index 0:
-
-![palette 0](screenshots/ftgrid-palette0.png)
-
-index 1:
-
-![palette 1](screenshots/ftgrid-palette1.png)
-
-index 2:
-
-![palette 2](screenshots/ftgrid-palette2.png)
-
-index 3:
-
-![palette 3](screenshots/ftgrid-palette3.png)
-
-index 4:
-
-![palette 4](screenshots/ftgrid-palette4.png)
-
-index 5:
-
-![palette 5](screenshots/ftgrid-palette5.png)
-
-index 6:
-
-![palette 6](screenshots/ftgrid-palette6.png)