On Tue, 08 May 2007 15:28:16 -0400 Jason Tackaberry <[EMAIL PROTECTED]> babbled:
> On 2007-05-08 13:42, Gustavo Sverzut Barbieri wrote: > > Motivation to do so is to have clip border as fade out instead of hard > > "cut". We need it for our software, Canola, but talking to Freevo guys > > show the same problem. > > This is definitely a big deal for us (Freevo). We've been resorting to > ugly hacks to get this effect in text (i.e. using Imlib2 to render the > text to an evas image object and fiddling with the alpha channel after), > but other hacks are increasingly impractical for use-cases that involve > fading across multiple objects. > > So I'm interested in hearing any advice from those who grok evas's core > (of which I am not even remotely one). the advice is "i would like this and it would be good" but its not trivial to do right/well and right now i really don't have the time to do it - thus it's one of those backburner "when i get to it" things. > Off topic now, but some other shortcomings that are an issue for us: > > 1. Lack of 3D transformations (on 2D objects). Gustavo has said he > has a proposal for adding this, which is very nice to hear. actually - he wants 2d transforms (rotate, shear, scale, translate). but you can do enough with 2d. > 2. GL engine a second class citizen. I sometimes read on e-devel > about how this or that isn't working properly in the GL engine. > At some point configure was updated to no longer build it by > default. I'm afraid one day I'll do a svn update and discover > raster has removed it because it was half working and nobody cared > about it. [I care! :)] yes - it is 2n'd class - but it won't be removed. did you notice i added yuv->rgb fragment shader accel to the engine recently? it isn't dead - its just not a primary devel path. > 3. Lack of subpixel precision. Makes stuff like the Ken Burns Effect > impossible (or possible, but lame). However this is probably not > practical without a big evas rewrite. I did just have the idea > that we could get halfpel by creating a canvas size twice the > display resolution and set the viewport to the display resolution > -- but that option won't work since viewport feature was removed. > Other options require buffer canvas hacks. it never would have worked even with the viewport before as evas just converted it to a 1:1 buffer. this is actually quite possible to be done - and in fact fairly easy - at least for the software engines. BUT its expensive as evas will need to render 4x or more the data. also co-ordinates are integer and converted to output co-ord space which is assumed to be 1:1 with canvas space. the engine api assumes 1:1 so i simply percolated that up to the evas api not as a hard requirement, but as a soft-requirement. api is still in theory capable of doing the "large canvas-space viewport", but the expense of "writing" to such a canvas will be very high. you want half-pel then you will pay 4x the price of rendering. > > Anyway, thought I'd just mention this stuff so they're in the right > people's minds. :) > > Jason. > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > enlightenment-devel mailing list > enlightenment-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > -- ------------- Codito, ergo sum - "I code, therefore I am" -------------- The Rasterman (Carsten Haitzler) [EMAIL PROTECTED] 裸好多 Tokyo, Japan (東京 日本) ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
