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| author | Allan Sandfeld Jensen <allan.jensen@digia.com> | 2013-09-03 17:32:55 +0200 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-09-03 19:31:22 +0200 |
| commit | bd718a4913f30729f515bfe16c3aee88a349821d (patch) | |
| tree | 375668424f82915e885ad60ea823845724bd3d7b /Source | |
| parent | cd76eaf6deede510b492088396abac46be4722ef (diff) | |
| download | qtwebkit-bd718a4913f30729f515bfe16c3aee88a349821d.tar.gz | |
[Qt] Images scaled poorly on composited canvas
https://bugs.webkit.org/show_bug.cgi?id=120632
Reviewed by Jocelyn Turcotte.
Explicitly set a imageInterpolationQuality on the TextureMapper, because
InterpolationDefault may be interpreted differently by nested GraphicsContexts.
* WebCoreSupport/TextureMapperLayerClientQt.cpp:
(TextureMapperLayerClientQt::renderCompositedLayers):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@154985 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Task-number: QTBUG-33081
Change-Id: Iec90f53da38c4520cef2aac0519e36af74dd5a50
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>
Diffstat (limited to 'Source')
| -rw-r--r-- | Source/WebKit/qt/WebCoreSupport/TextureMapperLayerClientQt.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Source/WebKit/qt/WebCoreSupport/TextureMapperLayerClientQt.cpp b/Source/WebKit/qt/WebCoreSupport/TextureMapperLayerClientQt.cpp index 4442bafff..8b4748bd0 100644 --- a/Source/WebKit/qt/WebCoreSupport/TextureMapperLayerClientQt.cpp +++ b/Source/WebKit/qt/WebCoreSupport/TextureMapperLayerClientQt.cpp @@ -103,7 +103,14 @@ void TextureMapperLayerClientQt::renderCompositedLayers(GraphicsContext* context return; m_textureMapper->setGraphicsContext(context); - m_textureMapper->setImageInterpolationQuality(context->imageInterpolationQuality()); + // GraphicsContext::imageInterpolationQuality is always InterpolationDefault here, + // but 'default' may be interpreted differently due to a different backend QPainter, + // so we need to set an explicit imageInterpolationQuality. + if (context->platformContext()->renderHints() & QPainter::SmoothPixmapTransform) + m_textureMapper->setImageInterpolationQuality(WebCore::InterpolationMedium); + else + m_textureMapper->setImageInterpolationQuality(WebCore::InterpolationNone); + m_textureMapper->setTextDrawingMode(context->textDrawingMode()); QPainter* painter = context->platformContext(); const QTransform transform = painter->worldTransform(); |