On 06/02/14 06:29, Jean-Philippe André wrote: > Hello all, > > > As some of you have heard already, I've been working for the past few > months on an advanced font effects module for Evas. The main idea is to > integrate features like in Gimp in the Evas rendering engine itself, in > order to have some cool text effects. > > I'd love to integrate this work within EFL 1.9 (the merge window is still > open :) ), but still leave it marked as experimental because it's... well, > not perfect quite yet.
Make sure you mark it in a way that will allow you to break API. > > Here's what's working: > - Software rendering > - Basic OpenGL (integration through full software rendering and pushing a > texture) > - Basic Edje integration (the best for quick testing) > - Text object > > My work has been public since I started, in my dev branch > (devs/jpeg/fonteffects), but I guess no one really had a look at it yet :) I did, a while back. I remember nothing though. :) > > > Fundamentally, it's a whole new part of Evas, called Evas_Filter (in > evas/filters) and almost nothing in Evas has been changed otherwise. We add > some basic support for Alpha images (1 byte per pixel, instead of the usual > RGBA). > > > The concept is to apply a series of operations to Alpha/RGBA buffers, and > blend the final result on screen. These buffers can be thought of as a > series of layers and the operations as filters (in the Gimp terminology). > So while the target is text for now, the whole concept has pretty much > nothing to do with text, really, just basic image processing :) > > Right now, here are the available filters: > - Blend > - Mask (same as blend, but with 2 input images and an output) > - Bump (using a bump map and various colors) > - Displacement (using a specific displacement map image format) > - Transform (vertical flip only for now) > - Blur > - Curve (apply a color curve to any color channel) > > Using proxy source images (any object actually), we can apply textures to > the text. And if the texture is, say, an animated Gif of a fire, then the > text will be on fire as well. > > > Finally, I'm introducing a new script language (yeah, sorry), that's pretty > simple, to describe the various buffers and commands to apply sequentially. > For example, to apply a simple dark blue drop shadow, one could do: > > blur(ox=4, oy=6, dx=10, dy=10, color=darkblue); > blend(color=white); > > > A test app with examples is available in my repo, at: > https://git.enlightenment.org/devs/jpeg/font_effect_ui.git/ > > More examples will follow. > Also, images & screenshots should follow. > > > Right now, I am working (hard :P) at fixing a few remaining issues with > proxy rendering (crashes, dangling objects, you name it...) and I'll do a > final rebase of my work over master before the weekend. I removed my > changes in Textblock as they introduce way too many issues, especially with > the recent optimizations. Yeah, that's a crazy territory. Did the test suite catch any of your issues? Or are those just rendering faults? > > > Soon, all your text will be on fire :-) -- Tom. ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
