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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Using the filter functional notation for background images results in wrong background-size rendering"
   href="https://bugs.webkit.org/show_bug.cgi?id=148221#c5">Comment # 5</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Using the filter functional notation for background images results in wrong background-size rendering"
   href="https://bugs.webkit.org/show_bug.cgi?id=148221">bug 148221</a>
              from <span class="vcard"><a class="email" href="mailto:zalan&#64;apple.com" title="zalan &lt;zalan&#64;apple.com&gt;"> <span class="fn">zalan</span></a>
</span></b>
        <pre>genererate filter image ignores the size argument when it copies the source to the destination.    

diff --git a/Source/WebCore/css/CSSFilterImageValue.cpp b/Source/WebCore/css/CSSFilterImageValue.cpp
index 5d80331..41de312 100644
--- a/Source/WebCore/css/CSSFilterImageValue.cpp
+++ b/Source/WebCore/css/CSSFilterImageValue.cpp
&#64;&#64; -123,7 +123,7 &#64;&#64; RefPtr&lt;Image&gt; CSSFilterImageValue::image(RenderElement* renderer, const FloatSiz
     std::unique_ptr&lt;ImageBuffer&gt; texture = ImageBuffer::create(size);
     if (!texture)
         return Image::nullImage();
-    texture-&gt;context()-&gt;drawImage(image, ColorSpaceDeviceRGB, IntPoint());
+    texture-&gt;context()-&gt;drawImage(image, ColorSpaceDeviceRGB, FloatRect(FloatPoint(0, 0), size));

     RefPtr&lt;FilterEffectRenderer&gt; filterRenderer = FilterEffectRenderer::create();
     filterRenderer-&gt;setSourceImage(WTF::move(texture));</pre>
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