I'm a little shocked. I'll accept that I had to create this effect 10 years ago with c2, but now? Frankly, its time to get up on a high horse here and soap box.
Bloom and color grading, if no others, are basically in every game for the last 10 years. I understand having to author particular effects, but pretty much EVERY game uses color grading and bloom, and to not include either in a game engine when you have 20 other useless effects is astounding... Indie to AAA, color grading is absolutely nec. Even if you are making a nes game clone, you need palette swapping and the easiest way to achieve that on modern hardware is with a table lookup. And bloom... Well... I mean, video games have been trying to fake it since the 90s and now we are post hdr by about 20 years.
glow vertical + glow horizontal still equals absolute rubbish. It did 15 years ago, and it still does now.
It's wrong if you like math.
It's wrong if you like details.
It's wrong if you have an any sense of aesthetics (unless your game is going for a chip on its glow's shoulder, but then so is everyone else in construct)
And it's so easy to author a bloom and color lookup table, how is this not in c3?