Bug 244824 – TextureMapper: rendering issue of a 3D transformed element at infinity with a parent with opacity<1

• Component: Platform
• Status: RESOLVED FIXED

[Fujii Hironori]

Created attachment 462155 [details]
test case

TextureMapper: rendering issue of a 3D transformed element with negative w and a parent with opacity

[Fujii Hironori]

Created attachment 462157 [details]
test case 2

[Fujii Hironori]

Created attachment 462159 [details]
test case 3

[Fujii Hironori]

Created attachment 462188 [details]
WIP patch

[Radar WebKit Bug Importer]

<rdar://problem/99853256>

[Fujii Hironori]

Created attachment 462329 [details]
test case 4

[Fujii Hironori]

Created attachment 462343 [details]
WIP patch

[Fujii Hironori]

Created attachment 462351 [details]
WIP patch

[Fujii Hironori]

Created attachment 462468 [details]
WIP patch

[Fujii Hironori]

Created attachment 462642 [details]
Patch

[Fujii Hironori]

Created attachment 462645 [details]
Patch

[Don Olmstead]

Comment on attachment 462645 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=462645&action=review

> Source/WebCore/platform/graphics/texmap/TextureMapperLayer.cpp:364
> +template<typename T>
> +struct Point4D {
> +    T x;
> +    T y;
> +    T z;
> +    T w;
> +};
> +
> +template<typename T>
> +Point4D<T> operator+(Point4D<T> s, Point4D<T> t)
> +{
> +    return { s.x + t.x, s.y + t.y, s.z + t.z, s.w + t.w };
> +}
> +
> +template<typename T>
> +Point4D<T> operator-(Point4D<T> s, Point4D<T> t)
> +{
> +    return { s.x - t.x, s.y - t.y, s.z - t.z, s.w - t.w };
> +}
> +
> +template<typename T>
> +Point4D<T> operator*(T s, Point4D<T> t)
> +{
> +    return { s * t.x, s * t.y, s * t.z, s * t.w };
> +}

I'm just surprised there's nothing hanging out already that you can piggy-back on for this.

[EWS]

Committed 255013@main (2fd3420ef281): <https://commits.webkit.org/255013@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 462645 [details].