48-bit rendering

Bug #625618 reported by Don Reba
16
This bug affects 3 people
Affects Status Importance Assigned to Milestone
Inkscape
New
Wishlist
Unassigned

Bug Description

I use Inkscape to produce graphics for mobile applications. After rendering, the graphics undergo custom dithering to look good on 16-bit screens. Having only 24 bits to dither is limiting. I would be able to produce higher quality content, if Inkscape could render to 48 bits.

Currently using Inkscape 0.48 on Windows Vista Ultimate.

Tags: renderer
su_v (suv-lp)
Changed in inkscape:
importance: Undecided → Wishlist
tags: added: renderer
Revision history for this message
vortexhu (vortexhu) wrote :

I'm personally interested in the 16 bits per channel (or better) output itself so that I can have more precise bitmaps. Adding dithering is quite easy according to the following link, so I'm hoping that the floating-point values can be discretized to 16 bits or even saved as floating-point images:

http://xor0110.wordpress.com/2010/11/29/inkscape-gradients-dithering-hack/

Some of my programs that interact with bitmaps can't calculate the images' gradients (i.e., empirical derivative/slope in two dimensions) on 8-bit exported images because of the flat regions and steps between them with rendered gradients (i.e., the SVG fills) and filters of large size.

If someone does implement this, I would appreciate 16-bit alpha channels as well (so 64 bits per pixel before compression), if it wouldn't be too much additional trouble.

Currently on Windows XP, by the way.

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