🌍The sky in procedural planets appears pitch black, even during the day, which needs to be fixed.
🌌Creating a post-processing shader that draws the atmosphere around planets.
🔵Understanding Rayleigh scattering, which causes blue light to scatter more than other colors.
🌤️Calculating transmittance to determine the amount of light reaching the camera.
🌈Simulating the scattering of light to create realistic atmospheric effects.
Why is the sky in procedural planets pitch black?
—The sky appears black due to the absence of atmospheric scattering, which we aim to fix in this video.
What is the purpose of the post-processing shader?
—The post-processing shader is responsible for drawing the atmosphere around planets, enhancing their visual appeal.
What is Rayleigh scattering?
—Rayleigh scattering is the scattering of light by small molecules in the atmosphere, causing blue light to scatter more than other colors.
How is transmittance calculated?
—Transmittance is determined by the optical depth, which is the average atmospheric density along the view ray.
How can scattering of light create realistic atmospheric effects?
—By simulating the scattering of light, we can replicate the way light interacts with gas molecules in the atmosphere, resulting in visually realistic atmospheric effects.
00:00Introduction to the problem of pitch black sky in procedural planets.
00:08Overview of creating a post-processing shader to draw the atmosphere around planets.
00:32Explanation of the fragment program of the shader and drawing a bubble-like atmosphere.
01:14Addressing complications related to planet surfaces and adding the depth texture.
01:58Understanding Rayleigh scattering and its impact on the scattering of light.
02:39Introduction to accurate atmospheric scattering and its relevance in creating realistic atmospheric effects.
03:26Explanation of the density of molecules in the atmosphere and its relationship with light scattering.
06:16Discussion of statistical approximations for rendering atmospheric scattering in real-time.
