Bug 687731

Summary:	Speed up shadings with a better monotonity check for color conversions
Product:	Ghostscript	Reporter:	Igor Melichev <igor.melichev>
Component:	Graphics Library	Assignee:	Robin Watts <robin.watts>
Status:	IN_PROGRESS ---
Severity:	enhancement	CC:	christinedelight.top85, henry.stiles, shailesh.mistry
Priority:	P3	Keywords:	bountiable
Version:	master
Hardware:	PC
OS:	Windows XP
Customer:		Word Size:	---

Description Igor Melichev 2004-10-06 01:33:03 UTC

Currently is_monotonic returns "don't know" if the inteval covers more than 1 
cell. If the function has a big number of cells cells (64 or more in 1 
dimension) this check appears too conservative, and the shading decomposition 
appears too tiny. An example is the test file of the bug 687713. (This problem 
is not a part of the problem described in 687713).

Comment 1 leonardo 2008-09-05 06:23:55 UTC

The function monotonity chack was done a long ago, but we still need a 
monotonity and linearity check for color conversions. Updating the bug title 
and passing to the owner of color spaces.

Comment 2 Michael Vrhel 2011-06-11 23:47:30 UTC

Another shading bug for Robin to look at and/or close....

Comment 3 Shailesh Mistry 2011-07-12 19:22:09 UTC

Enhancement still missing in Ghostscript 9.03