[Marble-bugs] [Bug 247410] New: Always blurred display with OpenStreetMap

[Alexey Charkov]

https://bugs.kde.org/show_bug.cgi?id=247410

           Summary: Always blurred display with OpenStreetMap
           Product: marble
           Version: unspecified
          Platform: Gentoo Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: general
        AssignedTo: marble-bugs at kde.org
        ReportedBy: alchark at gmail.com


Created an attachment (id=50024)
 --> (http://bugs.kde.org/attachment.cgi?id=50024)
Screenshot illustrating the problem

Version:           unspecified (using KDE 4.5.0) 
OS:                Linux

Even when using the Mercator projection for OpenStreetMap (which should not
result in any geometric transformation of tiles), Marble displays a blurred map
as if the tiles were geometrically transformed or resampled due to zoom level
mismatches. An attached screenshot demonstrates the web-based Mapnik rendering
side-by-side with Marble's rendering at a comparable zoom level.

Reproducible: Always

Steps to Reproduce:
Select Openstreetmap display with Mercator projection in Marble, compare the
rendering to a similar zoom/area rendered by Mapnik at openstreetmap.org

Actual Results:  
Marble's rendering is consistently more blurred than the original Mapnik tiles.

Expected Results:  
Marble should try its best to display raster tiles pixel-exactly where possible
(maybe by snapping to the optimal zoom levels).

OS: Linux (x86_64) release 2.6.35-gentoo-alchark-u3s
Compiler: x86_64-pc-linux-gnu-gcc

-- 
Configure bugmail: https://bugs.kde.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.