[gs-cvs] rev 7715 - trunk/gs/src

[stefan at ghostscript.com]

Author: stefan
Date: 2007-02-19 12:22:08 -0800 (Mon, 19 Feb 2007)
New Revision: 7715

Modified:
   trunk/gs/src/gxclimag.c
Log:
Fix for banding of some images not matching non-banding output.
Added check for an invariant that the translation matches in the 
two matrixes used in rendering.  In this case the non-high level image
path is taken.  A better solution would be to a single matrix, as this will
increase the display list size for some files.

Fixes banding differences in:

035-01.ps
148-11.ps
148.16.ps
1_2001.pdf
455690.pdf
Bug687832.pdf
Bug687840.pdf
a.pdf
adesso4.pdf
bc_02a01_cal.pdf
dave.pdf
file2.pdf
foo.pdf
john_clippedimage.pdf
messenger.pdf
messenger16.pdf
ngnews1.pdf
rotate180.pdf
rotate270.pdf
rotate90.pdf

pcl5ccet/15-03.BIN + ufst
  


Modified: trunk/gs/src/gxclimag.c
===================================================================
--- trunk/gs/src/gxclimag.c	2007-02-19 06:16:13 UTC (rev 7714)
+++ trunk/gs/src/gxclimag.c	2007-02-19 20:22:08 UTC (rev 7715)
@@ -375,6 +375,8 @@
 	varying_depths ||
 	(code = gs_matrix_invert(&pim->ImageMatrix, &mat)) < 0 ||
 	(code = gs_matrix_multiply(&mat, &ctm_only(pis), &mat)) < 0 ||
+	/****** CAN'T HANDLE SOME TRANSFORMS ******/
+	(mat.tx != cdev->imager_state.ctm.tx) ||  
 	!(cdev->disable_mask & clist_disable_nonrect_hl_image ?
 	  (is_xxyy(&mat) || is_xyyx(&mat)) :
 	  image_matrix_ok_to_band(&mat))