I moved the procedural terrain generator to the GPU. The speedup is incredible 100-200 TIMES! Instead of generating elevation map and color map pixel-by-pixel on CPU, this work is now performed by special shaders. The first shader computes a mix of multi-octave noises (Perlin and...
This is the first attempt to make a procedural terrain. The same quadtree-based terrain engine is used as before. But instead of loading pieces of pre-processed planet texture from the disk, the engine generates textures programmatically (on CPU). The first step is calculating a multi-octave...
I experimenting with clouds. I downloaded a giant (43200x21600) texture of the cloud coverage of the Earth. The texture is static, so don't ask for animation :) The clouds themselves are rendered as a spherical layer around the planet, at an altitude of 5 km...
I tried to make the atmosphere of Titan by changing the parameters of the model. It looks somewhat similar when viewed from space and from the upper layers of the atmosphere, although the real orange color could not be obtained. And, of course, no thick...
I replaced old O`Niel's atmosphere to a new one based on Eric Bruneton's Precomputed atmospheric scattering....
After a month of hard work, the procedural stars became more or less decent.Implementation detailsHierarchical octal tree, 10 levels, nodes of level 0 contains the brightest stars, level 1 - weaker stars, ...
Attempt to make 3D models for roughly-shaped moons of Mars. This is not really a 3D model, this is a regular SE "planet" with a regular cubemap texture and elevation map, but the elevation amplitude is very big. The elevation map is 16-bit and defines...
Implemented eclipse shadows. They are analytically calculated in the planet surface fragment shader.View from the eclipsed body:...
https://youtu.be/CbZ5GnPidFw...
Three suns illuminating Saturn (just for a test):Light source can be local. This one looks like a nuclear explosion near Saturn:Mulitple lights are needed not only for binary and multiple star systems, but also for illumination of moons and planets by each other:This is the...