Bug 119078 – [GTK] [EFL] Enable tiled shadow blur for the inset shadows.

• Component: WebKitGTK
• Status: RESOLVED FIXED

[Alejandro G. Castro]

We are not currently the tiled rendering in the inset shadow blur for the ports using cairo backend.

[Alejandro G. Castro]

Created attachment 207444 [details]
Proposed patch

[Martin Robinson]

Comment on attachment 207444 [details]
Proposed patch

View in context: https://bugs.webkit.org/attachment.cgi?id=207444&action=review

Nice. Just a couple suggestions before landing.

> Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp:1054
> +    if (!roundedHoleRect.radii().isZero())
> +        path.addRoundedRect(roundedHoleRect);
> +    else
> +        path.addRect(roundedHoleRect.rect());

I wonder if this optimization should go into Path.cpp eventually?

> Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp:1061
> +    setFillRule(RULE_EVENODD);
> +    setFillColor(color, colorSpace);

I think that instead of setting the fill rule and color for the GraphicsContext you should just set them for the Cairo context. That way you can use cairo_save/cairo_restore, instead of oldFillRule and oldFillColor.

> Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp:1065
> +        ShadowBlur& shadow = platformContext()->shadowBlur();
> +        shadow.drawInsetShadow(this, rect, roundedHoleRect.rect(), roundedHoleRect.radii());

I think you can avoid the temporary and move this code to the very start of the method after the early return.

[Alejandro G. Castro]

(In reply to comment #2)
> (From update of attachment 207444 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=207444&action=review
> 
> Nice. Just a couple suggestions before landing.
> 
> > Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp:1054
> > +    if (!roundedHoleRect.radii().isZero())
> > +        path.addRoundedRect(roundedHoleRect);
> > +    else
> > +        path.addRect(roundedHoleRect.rect());
> 
> I wonder if this optimization should go into Path.cpp eventually?
>

Good point, not sure, I can check it in a follow-up patch.

> > Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp:1061
> > +    setFillRule(RULE_EVENODD);
> > +    setFillColor(color, colorSpace);
> 
> I think that instead of setting the fill rule and color for the GraphicsContext you should just set them for the Cairo context. That way you can use cairo_save/cairo_restore, instead of oldFillRule and oldFillColor.
> 

Yep, it sounds better option.

> > Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp:1065
> > +        ShadowBlur& shadow = platformContext()->shadowBlur();
> > +        shadow.drawInsetShadow(this, rect, roundedHoleRect.rect(), roundedHoleRect.radii());
> 
> I think you can avoid the temporary and move this code to the very start of the method after the early return.

Ok,

Thanks for the review.

[Alejandro G. Castro]

Created attachment 207927 [details]
Proposed patch

[Martin Robinson]

Comment on attachment 207927 [details]
Proposed patch

View in context: https://bugs.webkit.org/attachment.cgi?id=207927&action=review

> Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp:1056
> +    if (this->mustUseShadowBlur())
> +        platformContext()->shadowBlur().drawInsetShadow(this, rect, roundedHoleRect.rect(), roundedHoleRect.radii());

You could even move this above the path manipulation, I think.

[Alejandro G. Castro]

(In reply to comment #5)
> (From update of attachment 207927 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=207927&action=review
> 
> > Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp:1056
> > +    if (this->mustUseShadowBlur())
> > +        platformContext()->shadowBlur().drawInsetShadow(this, rect, roundedHoleRect.rect(), roundedHoleRect.radii());
> 
> You could even move this above the path manipulation, I think.

Yeah, I've modified the patch before landing, thanks.

http://trac.webkit.org/changeset/142608