Changeset 143545 in webkit

Timestamp:

Feb 20, 2013 5:35:01 PM (11 years ago)

Author:

commit-queue@webkit.org

Message:

Printing WebGL canvases in Chrome uses stale data after first print
​https://bugs.webkit.org/show_bug.cgi?id=110003

Patch by Brandon Jones <​bajones@google.com> on 2013-02-20
Reviewed by Kenneth Russell.

Unable to validate printed content automatically. No regression in existing WebGL tests.

• html/canvas/WebGLRenderingContext.cpp: (WebCore): (WebCore::WebGLRenderingContext::paintRenderingResultsToCanvas):

Location:

trunk/Source/WebCore

Files:

• ChangeLog (modified) (1 diff)
• html/canvas/WebGLRenderingContext.cpp (modified) (1 diff)

trunk/Source/WebCore/ChangeLog

@@ +1 @@
+2013-02-20  Brandon Jones  <bajones@google.com>
+ 
+        Printing WebGL canvases in Chrome uses stale data after first print
+        https://bugs.webkit.org/show_bug.cgi?id=110003
+ 
+        Reviewed by Kenneth Russell.
+ 
+        Unable to validate printed content automatically. No regression in existing WebGL tests.
+ 
+         * html/canvas/WebGLRenderingContext.cpp:
+         (WebCore):
+         (WebCore::WebGLRenderingContext::paintRenderingResultsToCanvas):
+
 2013-02-20  Christian Biesinger  <cbiesinger@chromium.org>
 

trunk/Source/WebCore/html/canvas/WebGLRenderingContext.cpp

@@ -740 +740 @@
 void WebGLRenderingContext::paintRenderingResultsToCanvas()
 {
+    if (canvas()->document()->printing())
+        canvas()->clearPresentationCopy();
+
     // Until the canvas is written to by the application, the clear that
     // happened after it was composited should be ignored by the compositor.