Gecko 1.9.3 platform developer preview 3

Mozilla

A developer preview 2 után itt a Gecko 1.9.3 platform harmadik előzetese. Természetesen, a korábbi kiadásokhoz hasonlóan ez is csak tesztelési célokat szolgál és a webalkalmazás-fejlesztőket és a tesztelő közösséget célozza. Újdonságok a preview 2-höz képest:

  • Performance - An experimental Direct2D rendering backend on Windows is available, turned off by default. For information and instructions on enabling this experimental feature, see Bas Shouten's post.
  • JavaScript - Significant API improvements are available for JS-ctypes, a foreign function interface for extensions. ctypes.jsm now supports complex types including structures, pointers, and arrays. See Dan Witte's post for more information.
  • Stability - Mozilla now uses an infallible allocator: if a request for memory cannot be fulfilled, the allocator aborts. This allows for simplification of the Mozilla code, as well as preventing a class of security errors with unchecked null pointers. See bug 441324 for details.
  • Plugins - Additional fixes for multi-process plugins:
    • crash and hang fixes;
    • the Foxit Reader and Octoshape plugins work correctly;
    • Performance improvements in the delivery of network streams.

A bejelentés itt olvasható.

( Chronos | 2010. 03. 19., p – 11:47 )

Megmondja nekem valaki hogyha már cross platform alkalmazásról van szó miért nem opengl-t használnak? Hosszútávon jobban megérné, vagy nem?
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Ubuntu

( bubbles | 2010. 03. 19., p – 15:01 )

Na! Az egész egy kis utána járással megválaszolható. A Firefox a "Cairo graphics library" használja. Ez pedig Windows alatt a Direct2D-t használja/támogatja (nem tudom). Ezért van ez.

"Cairo is a 2D graphics library with support for multiple output devices. Currently supported output targets include the X Window System, Quartz, Win32, image buffers, PostScript, PDF, and SVG file output. Experimental backends include OpenGL (through glitz), XCB, BeOS, OS/2, and DirectFB."

Csak összejön :)
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Ubuntu

"Obviously we will aspire to deliver the highest quality and performance rendering on all platforms. There is no Linux alternative to Direct2D though. Partially because building a system like Direct2D is extremely complex, even when using Cairo's tesselation it is still very difficult to correctly use the Shaders for everything, deal with all the edges and provide subpixel text anti-aliasing. The trick here is that any implementation, needs to be -totally- complete, since software fallback is extraordinarily expensive because it requires the GPU and the CPU to synchronize. Causing stalls.

We are working on providing hardware acceleration for some operations on other platforms. It is a more difficult struggle though, and it would be foolish for us not to use more advanced systems when those are provided to us by the OS. Note we have always tried to support the best frameworks for all platforms. OpenGL is also poorly and inconsistently supported on Windows & Linux."

"Even if you would want to use OpenGL, developing the vector renderer on top of it would take considerable effort. Current Cairo OpenGL backends have not succesfully been made to perform sufficiently to date. Direct2D takes a lot of this work off our shoulders by providing an extremely efficient and complicated vector graphics renderer. Hence OGL would not really have been an option at all."
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Ubuntu

( nagy_peter v | 2010. 03. 19., p – 20:35 )

Most jól hangzottak az IE9-re beígért funkciók, de ha így haladnak a mozillások, akkor mire kijön az IE9, már megint csak ott fog tartani, hogy "nagyrészt tudja azt, amit a többiek". Ettől függetlenül azért örülök, hogy fejlődik, különösen a szabványok támogatása terén.