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-rw-r--r--pixman/refactor33
1 files changed, 25 insertions, 8 deletions
diff --git a/pixman/refactor b/pixman/refactor
index 9c05f20..52fceab 100644
--- a/pixman/refactor
+++ b/pixman/refactor
@@ -295,12 +295,6 @@ Possibly interesting additions:
compositing, the whole thing ends up being equivalent to the
output kernel from above.
- - Glyph polygons
-
- If glyphs could be given as polygons, they could be
- positioned and rasterized more accurately. The glyph
- structure would need subpixel positioning though.
-
- Color space conversion
The complete model here is that each surface has a color
@@ -316,6 +310,17 @@ Possibly interesting additions:
with color spaces? Presumably dithering should happen in linear
intensity space).
+ - Floating point surfaces, 16, 32 and possibly 64 bit per
+ channel.
+
+ Maybe crack:
+
+ - Glyph polygons
+
+ If glyphs could be given as polygons, they could be
+ positioned and rasterized more accurately. The glyph
+ structure would need subpixel positioning though.
+
- Luminance vs. coverage for the alpha channel
Whether the alpha channel should be interpreted as luminance
@@ -324,8 +329,20 @@ Possibly interesting additions:
also be considered whether it should be possible to have
both channels in the same drawable.
- - Floating point surfaces, 16, 32 and possibly 64 bit per
- channel.
+ - Alternative for component alpha
+
+ - Set component-alpha on the output image.
+
+ - This means each of the components are sampled
+ independently and composited in the corresponding
+ channel only.
+
+ - Have 3 x oversampled mask
+
+ - Scale it down by 3 horizontally, with [ 1/3, 1/3, 1/3 ]
+ resampling filter.
+
+ Is this equivalent to just using a component alpha mask?
Incompatible changes: