Brian and Nathan write: > I think we should at least provide a set of functions for > converting image data / color values between the two spaces. > ...
> I would also suggest a set of conversion functions for performing > the premul conversion on non-premul image data. ... > ... Sure, without question :) Let me warn everyone who still intends to work using non-premul data (and/or colors) -- it's tricky to mix these two color spaces, you may end up getting mixed-up yourself. Here's an example of what happens right now in evas because we're using non-premul data in the software based engines vs what happens when we use the xrender engine. Take the following Simon inspired example: Evas_Object *obj; unsigned int data[2] = {0xff00ff00, 0x00ff0000}; // This gives 2x1 sized image data with "opaque-green" // and "transparent-red" pixels. obj = evas_object_image_add(some_evas); evas_object_image_size_set(obj, 2, 1); evas_object_image_data_set(obj, (unsigned int *)data); evas_object_iamge_alpha_set(obj, 1); evas_object_resize(obj, 100, 100); evas_object_image_fill_set(obj, 0, 0, 100, 100); evas_object_image_smooth_scale_set(obj, 1); evas_object_image_border_set(obj, 0, 0, 0, 0); evas_object_move(obj, some_x, some_y); evas_object_layer_set(obj, some_layer); evas_object_clip_set(obj, some_clip); evas_object_show(obj); If you display this with the software-x11 engine (onto a white background say), you will see a 100x100 image which varies from opaque-green at the left edje to transparent at the right edje, with some redish and brownish in between. However, if you display this with the xrender-x11 engine, you will see an image varying from opaque-green at the left edje to transparent at the right edje with no 'redish' or 'brownish' anywhere. I haven't actually checked it with what's in CVS (we've been making scaling changes lately), but I think that's what will happen. jose. Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel