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This is an automatically generated e-mail. To reply, visit:
<a href="http://svn.reviewboard.kde.org/r/6109/">http://svn.reviewboard.kde.org/r/6109/</a>
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<p style="margin-top: 0;">On December 13th, 2010, 7:30 p.m., <b>Dennis Nienhüser</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Works fine on my Desktop and on the N900, even fixes a crash there. Given that the patch changes no strings and is not a new feature, it should be no problem to commit it to trunk.
I wonder whether we should listen to quality settings in some way, e.g. introducing
bool const highQuality = viewParams->mapQuality() == HighQuality || viewParams->mapQuality() == PrintQuality;
painter.setRenderHint( QPainter::SmoothPixmapTransform, highQuality );
after the QPainter creation. That'd possibly reduce much of the speed gain though.
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<p>On December 13th, 2010, 11:18 p.m., <b>Bernhard Beschow</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I can try that. I also had the idea to call the MercatorScanlineTextureMapper for the high quality case, but your suggestion would be more generic (working with Equirectangular projection as well).</pre>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Yeah, that works great!</pre>
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<p>- Bernhard</p>
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<p>On December 13th, 2010, 11:46 p.m., Bernhard Beschow wrote:</p>
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<div>Review request for marble.</div>
<div>By Bernhard Beschow.</div>
<p style="color: grey;"><i>Updated 2010-12-13 23:46:02</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This patch introduces an optimized code path for the case that both the tile projection and the map projection are of type Mercator. In this very common case, the tiles can be scaled rather than reprojected, promising a significant speedup. Moreover, it seems to avoid crashes in high zoom levels on the N900.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I have measured speedups of up to 2.7 on my system. This seems to depend on the QImage::Format, so format conversion should be avoided in a future version if possible.
The image quality is roughly of outline quality when a discrete zoom level isn't hit.
I get crashes on my Netbook, but not on my other machine. The error message is: "QPaintDevice: Cannot destroy paint device that is being painted". I've got no idea what's going on here. Please help.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/trunk/KDE/kdeedu/marble/src/lib/AbstractScanlineTextureMapper.h <span style="color: grey">(1205882)</span></li>
<li>/trunk/KDE/kdeedu/marble/src/lib/AbstractScanlineTextureMapper.cpp <span style="color: grey">(1205882)</span></li>
<li>/trunk/KDE/kdeedu/marble/src/lib/CMakeLists.txt <span style="color: grey">(1205882)</span></li>
<li>/trunk/KDE/kdeedu/marble/src/lib/FastMercatorTextureMapper.h <span style="color: grey">(PRE-CREATION)</span></li>
<li>/trunk/KDE/kdeedu/marble/src/lib/FastMercatorTextureMapper.cpp <span style="color: grey">(PRE-CREATION)</span></li>
<li>/trunk/KDE/kdeedu/marble/src/lib/TextureLayer.cpp <span style="color: grey">(1205882)</span></li>
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<p><a href="http://svn.reviewboard.kde.org/r/6109/diff/" style="margin-left: 3em;">View Diff</a></p>
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