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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/173083">173083</a></dd>
<dt>Author</dt> <dd>lforschler@apple.com</dd>
<dt>Date</dt> <dd>2014-08-28 14:53:51 -0700 (Thu, 28 Aug 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merged <a href="http://trac.webkit.org/projects/webkit/changeset/172871">r172871</a>. rdar://problem/16896423</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari6001branchSourceWebCoreChangeLog">branches/safari-600.1-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari6001branchSourceWebCoreplatformgraphicscgImageBufferCGcpp">branches/safari-600.1-branch/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="branchessafari6001branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1-branch/Source/WebCore/ChangeLog (173082 => 173083)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1-branch/Source/WebCore/ChangeLog 2014-08-28 21:38:18 UTC (rev 173082)
+++ branches/safari-600.1-branch/Source/WebCore/ChangeLog 2014-08-28 21:53:51 UTC (rev 173083)
</span><span class="lines">@@ -1,3 +1,26 @@
</span><ins>+2014-08-28 Lucas Forschler <lforschler@apple.com>
+
+ Merge r172871
+
+ 2014-08-22 Dean Jackson <dino@apple.com>
+
+ Google Canvas2D maps are too slow and uncontrollable with Safari with full screen mode
+ https://bugs.webkit.org/show_bug.cgi?id=136168
+
+ Reviewed by Tim Horton.
+
+ When Google maps are using their 2D "lite" fallback and you're drawing in a huge
+ window such as fullscreen 4K, we would drop back to unaccelerated mode, thinking
+ that we'd exceeded the maximum IOSurface size.
+
+ Remove the hardcoded limit on IOSurface sizes, and instead ask the system
+ what it believe the maximum to be. This was significantly higher than our
+ limit on the systems I tested.
+
+ * platform/graphics/cg/ImageBufferCG.cpp:
+ (WebCore::ImageBuffer::ImageBuffer): Include our IOSurface wrapper, which
+ has a query for maximum size, and use that instead.
+
</ins><span class="cx"> 2014-08-26 Dana Burkart <dburkart@apple.com>
</span><span class="cx">
</span><span class="cx"> Merge r172977. <rdar://problem/18141703>
</span></span></pre></div>
<a id="branchessafari6001branchSourceWebCoreplatformgraphicscgImageBufferCGcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1-branch/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp (173082 => 173083)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1-branch/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp 2014-08-28 21:38:18 UTC (rev 173082)
+++ branches/safari-600.1-branch/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp 2014-08-28 21:53:51 UTC (rev 173083)
</span><span class="lines">@@ -48,6 +48,7 @@
</span><span class="cx"> #endif
</span><span class="cx">
</span><span class="cx"> #if USE(IOSURFACE_CANVAS_BACKING_STORE)
</span><ins>+#include "IOSurface.h"
</ins><span class="cx"> #include <IOSurface/IOSurface.h>
</span><span class="cx"> #endif
</span><span class="cx">
</span><span class="lines">@@ -57,11 +58,6 @@
</span><span class="cx"> namespace WebCore {
</span><span class="cx">
</span><span class="cx"> #if USE(IOSURFACE_CANVAS_BACKING_STORE)
</span><del>-#if PLATFORM(IOS)
-static const int maxIOSurfaceDimension = 2048;
-#else
-static const int maxIOSurfaceDimension = 4096;
-#endif
</del><span class="cx">
</span><span class="cx"> // FIXME: Adopt WebCore::IOSurface.
</span><span class="cx"> static RetainPtr<IOSurfaceRef> createIOSurface(const IntSize& size)
</span><span class="lines">@@ -156,7 +152,8 @@
</span><span class="cx"> return;
</span><span class="cx">
</span><span class="cx"> #if USE(IOSURFACE_CANVAS_BACKING_STORE)
</span><del>- if (width.unsafeGet() > maxIOSurfaceDimension || height.unsafeGet() > maxIOSurfaceDimension)
</del><ins>+ IntSize maxSize = IOSurface::maximumSize();
+ if (width.unsafeGet() > maxSize.width() || height.unsafeGet() > maxSize.height())
</ins><span class="cx"> accelerateRendering = false;
</span><span class="cx"> #else
</span><span class="cx"> ASSERT(renderingMode == Unaccelerated);
</span></span></pre>
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