[Webkit-unassigned] [Bug 70099] OpenCL implementation of W3C Filter Effects Master Bug

Fri Oct 14 13:55:01 PDT 2011

https://bugs.webkit.org/show_bug.cgi?id=70099

--- Comment #1 from Chris Marrin <cmarrin at apple.com>  2011-10-14 13:55:01 PST ---
Why use OpenCL rather than just using the existing WebGL backend (GraphicsContext3D) that already exists? What advantage would OpenCL give you?

Using GraphicsContext3D gives you several advantages:

1) it's already there. OpenCL is far from universally available. And even though mobile hardware theoretically supports it, I know of no hardware yet that is shipping with it. WebGL runs on top of many platforms. It runs on desktop OpenGL implementations on Windows, OSX and Linux. It runs on OpenGL ES implementations on iOS and Android. And it runs on top of DirectX courtesy of ANGLE.

2) GraphicsContext3D has already solved the "how do I get a buffer on the GPU" issue.

3) The buffers GraphicsContext3D uses already has a path for compositing on the page.

4) There is a new CSS Shaders proposal from Adobe which uses WebGL shaders to do its work. Since SVG and CSS filters are (at least in theory) sharing an implementation, the CSS Shaders implementation would be complicated by an OpenCL backend.

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.