I'm missing Corona Render alpha v7.2 very very much, because the algorithms, especially the "Bucket" algorithms.
Yep, alpha v7.2 is slow than v1.x, but alpha v7.2 is the real Corona Render.
Slow of alpha v7.2 is built on the premise of guaranteeing quality of this unique algorithm, it's just need to improve efficiency of the implementation of this algorithm and add new features like v1.x did.
Although v1.x is that seems to be faster than alpha v7.2, and v1.x got good new features, but v1.x lost the most important core algorithms which alpha v7.2 got, and v1.x slow than alpha v7.2 when over
.
.
.
The algorithm, alpha v7.2 is "Checkerboard Algorithm" which I feel that, and this is the core of Corona Render, and this is why you can clear to get very good result just from few mins and few passes in "Bucket" mode. For example in "Bucket" mode, if you run 10 pass with only 2 samples for each pass, even if this is pretty much get on passes and very good result.
But, in v1.x, even if you run 75 pass, it's like a joke, you still can easy saw noise.
So, algorithm of v1.x is a "Fake Fast" which I called, it's no built on the premise of guaranteeing quality of this unique algorithm, just blindly seek for quick with abandoned core algorithm. That's so bad! Even if when you have to use lots of passes to get good result like alpha v7.2 did in v1.x, in fact, it's already slower than alpha v7.2. So it's a change of more harm than good.
Just like the antialiasing of alpha v7.2 is definitely good than v1.x, especially for hypotenuse edge, alpha v7.2 can easy take great result of antialiasing hypotenuse edge(sure, including other type of edges) with few pass. But v1.x can't. (Both use 'Tent' to get result)
.
.
.
So, I real hope your team back to the real foundation algorithm of alpha v7.2 for Corona Render and bring those new features from v1.x and improvement to this up of foundation, that's the real right way for formidable Corona Render, otherwise Corona Render will lose the biggest advantage forever just like the v1.x now.
.
.
.
And a suggest for feature, you can make GPU to do denoise when rendering, that's maybe a new way to save speed of rendering and not affect quality.
.
.
.
Thanks very much your team's hard work and made the real great render!!!
.
.
.
.
.
.
1.One Xeon E5 2670v1, 16GB DDR3 1333HZ Memory Single Channel, Corona Render Alpha v7.2, Bucket Mode, 1920x1080, Forest Pack 4, Sample 18, Passes 1, Primitives 238M, Prepare Scene Time: 3 secends, Rendering Time 02:55. You can directly do denoise for got final picture.
.
.
2.One Xeon E5 2670v1, 16GB DDR3 1333HZ Memory Single Channel, Corona Render Alpha v7.2, Bucket Mode, 1920x1080, Forest Pack 4, Sample 8, Passes 1, Primitives 70,950,495, Prepare Scene Time: 1 secends, Rendering Time 01:54. You can directly do denoise for got final picture.
.
.
3.One Xeon E5 2670v1, 16GB DDR3 1333HZ Memory Single Channel, Corona Render Alpha v7.2, Bucket Mode, 1920x1080, Forest Pack 4, Sample 18, Passes 1, Primitives 68,246M, Prepare Scene Time: 42 secends, Rendering Time 05:32. You can directly do denoise for got final picture.
.
.
4.One Xeon E5 2670v1, 16GB DDR3 1333HZ Memory Single Channel, Corona Render Alpha v7.2, Bucket Mode, 1920x1080, Forest Pack 4, Sample 8, Passes 1, Primitives 68,246M, Prepare Scene Time: 42 secends, Rendering Time 02:07. You can directly do denoise for got final picture.
.
.
5.One Xeon E5 2670v1, 16GB DDR3 1333HZ Memory Single Channel, Corona Render Alpha v7.2, Bucket Mode, 1920x1080, Laubwerks Plants Kits, Sample 1, Passes 3, Prepare Scene Time: 01:42 secends, Rendering Time 10:57. You can directly do denoise for got final picture.
.
.
6.One Xeon E5 2670v1, 16GB DDR3 1333HZ Memory Single Channel, Corona Render Alpha v7.2, Bucket Mode, 1920x1080, Forest Pack 4, Sample 1, Passes 2, Prepare Scene Time: 6 secends, Rendering Time 11:06. You can directly do denoise for got final picture.
.
.
7.One Xeon E5 2670v1, 16GB DDR3 1333HZ Memory Single Channel, Corona Render Alpha v7.2, Bucket Mode, 1920x1080, Sample 1, Passes 3, 792 Copy Objects more than 81,000,000 polys, Prepare Scene Time: 4 min 13 secends, Rendering Time 01:40. You can directly do denoise for got final picture.
And this scene render with Vray 3, prepare scene need more than 30 mins, prepare GI need more than 1 hour, final rendering need about 7 mins.
.
.
8.One Xeon E5 2670v1, 16GB DDR3 1333HZ Memory Single Channel, Corona Render Alpha v7.2, Bucket Mode, 1280x720, Sample 6, Passes 4, Average Prepare Scene Time: 0.1 secends, Average Rendering Time: 30 secends. You can directly do denoise for got final picture. This is a animation which got 100 frames. And finished rendering just need 50 mins.
.
.
9.One Xeon E5 2670v1, 16GB DDR3 1333HZ Memory Single Channel, Corona Render Alpha v7.2, Bucket Mode, 1920x1080, Forest Pack 4, Sample 1, Passes 4, Primitives 3,864M, Average Prepare Scene Time: 2 secends, Average Rendering Time 00:55 - 01:25. You can directly do denoise for got final picture. This is a animation which got 240 frames. And finished rendering just need 3 hours.