Since my last blog entry I’ve scratched off a few more shots, and while I work out some of the details for perhaps the most complex shot of the film, I thought I’d take a break and do a small progress update.
While I don’t want to share progress on every single shot (so there are still some unknowns upon first viewing!), I will share a few stills from some completed shots.
Deimos
Deimos is one of Mars’ two moons, the other being Phobos. Bonestell has paintings of both of these locations, and they are quite similar in look. For Dreamt Futures, I have taken ideas from the paintings of both locations, to create something that is still very recognisable as Bonestell’s artwork and composition, but bringing a little extra of my own flare.
I really enjoy Bonstell’s composition with Mars contrasting the view of the rocky surface of Deimos, and casting a red reflection. I wanted to take these concepts and push them a little further, to draw more attention to the astronauts in the painting. By moving the camera around and punching in a little closer, I managed to create more of a focus on the humans exploring the landscape and admiring the views of Mars.
Deimos has an extremely low gravitational force - if you were standing on the surface and jumped, you would be at escape velocity! The Astronaut Explorer sitting on the rock in this shot is saving his friend from floating away after getting up a little too fast.
The lighting was a little tricker to set up here, I’m using multiple light sources to cast the highlights in the right areas, and still look realistic. For Mars, I created a new atmosphere shader, altering a set up I have used for Earth in the past. The technique involves remapping a Fresnel node to drive a subsurface colour, and another Fresnel node to control the opacity of the redshift material - this is then applied to a sphere which sits on top of the surface of the planet. With this set up you have good control of the depth and falloff of the atmosphere, as well as colour gradients.
Mimas
The second shot to talk about today is of Mimas, one of the moons of Saturn. Let’s first take a look at Bonestells depiction of the moon.
This is one of my favourite Bonestell paintings. The lighting on Saturn looks almost translucent, and the shadowing of the rings and moon being cast back onto the surface of Saturn are a sight to see. The biggest challenge in recreating this scene is the sense of scale. When creating landscape renders, we are used to using Atmosphere/Environment shaders. These help create a sense of depth as a viewer, and a graduation of colour as the view vanishes over the horizon. With a small rocky moon, there is no atmosphere, so it is hard to convey this concept. and keep realism in mind.
Looking at the foreground rocks in the image, I decided these would be the best way to help illustrate the scale of the landscape. The problem to solve then is how am I going to have millions of rocks active in a scene?
I used high quality proxy models of rocks for the first third of the image, and swapped them out for extremely low LOD proxies as they were positioned further away from the camera, and decreased in scale. I then instanced the proxies, and placed them into a Matrix Scatter. This allowed me to scatter a huge amount of geometry and not run out of VRAM when it came to rendering.
The base landscape was generated in World Creator, it is a 1km/1km base, which I used to scatter the geometry across. The base landscape was then exported as a TIFF, brought into Cinema 4D and displaced using Redshift. I used a displacer modifier in C4D and matched the elevation. This geometry was then used for the scatter, but swapped out for the displacement map in the final render. Most of the foreground elements were hand placed, so I had a good stage to animate the explorers wandering across the barren moon.
Lastly, to create a greater sense of depth, I created a ground ‘fog’. Although not present in real life, a subtle fog helps emulate the sense of moon dust which could be displaced above the surface of Mimas (especially when being disturbed by intrepid explorers!
While I love this Bonestell painting - its tone and colour arent quite right for what I am going for in Dreamt Futures - this will become more clear when watching the film with the shots in sequence. For Mimas, I decided to go for a much brighter look, with over exposed highlights, and darker shadows. I feel this helps create a feeling of a harsher alien environment.
That’s all I’ll be sharing for today. I hope you enjoyed reading, and having a sneak peak at a couple of shots. Remember to check back for updates in the future!