Whilst SPARC is big-endian the glyph image data is all accessed as
bytes so I don't
think that can be the problem. But it could be the image format isn't right.
Like ARGB is being used and the server expects RGB ?
-phil.
On 8/27/2010 1:43 PM, Dr Andrew John Hughes wrote:
On 27 August 2010 21:25, Clemens Eisserer<[email protected]> wrote:
Hi again,
Any thoughts on this one that just got submitted a few minutes ago?
I'm guessing you don't have a SPARC System with OpenSolaris handy
so I'm just asking for ideas here.
The only thing I can think of is the copy code which copies/converts
the GlyphInfo image-data into the stream submitted to X, in
XRGlyphCacheEntry.writePixelData().
I guess the pixel-data I get from the GlyphInfo structure is the same,
maybe access using Unsafe is somehow broken or shifted by a byte?
For now I assume a fixed oder when uploading the glyph-data (didn't
find any docs about it), could it be different on that machine?
FWIW, SPARCs are big-endian. Specifically,
'The 32-bit SPARC V8 architecture is purely big-endian. The 64-bit
SPARC V9 architecture utilizes big-endian instructions, but can access
data in either big-endian or little-endian byte order, chosen either
at the application instruction (load/store) level or at the memory
page level (via an MMU setting). The latter is often used for
accessing data from inherently little-endian devices, such as those on
PCI buses.' -- http://en.wikipedia.org/wiki/SPARC
Thanks, Clemens
-phil.
*Change Request ID*: 6980378
*Synopsis*: LCD subpixel text has yellow background with Xrender enabled in
jdk1.7.0-ea-b106 on SPARC.
=== *Description*
============================================================
Java Version: 1.7.0-ea-b106
Platform: OpenSolaris 5.11 snv_146
Problems:
When launch Java2Demo/SwingSet2 with Xrender=True or true in b106, you can
see all letters or fonts are marked with yellow color or yellow background,
but disable xrender, it looks normal, no yellow background, please see
attached files for xrender enabled and disabled screen shots for details.
File this bug to make sure that this is not a problem caused by xrender
enabled.
It can be reproducible as alway by the following command:
bin/java -jar -Dsun.java2d.xrender=True demo/jfc/Java2D/*.jar
We have a OpenSolaris 5.11 snv_146 newly installed in lab, the host name is
listed in comments if you want to reproduce it.
The framebuffer in the machine is XVR-100.
*** (#1 of 1): 2010-08-26 21:55:21 GMT+00:00 [email protected]
*** Last Edit: 2010-08-26 22:46:10 GMT+00:00 [email protected]
=== *Evaluation*
=============================================================
The background that is yellow follows the rectangular shape of the
individual glyphs. Otherwise everything appears correct.
Seeing this only on SPARC. At this time there's only one system
here with the right hardware/software combination to run XRender
on SPARC so it could be an Xserver side problem.
Its not been seen on Solaris on Intel and it also doesn't occur
on software buffered images, only on XRender surfaces.
