[Tutorial] How to render stars and skybox [World Renderer - Forge 1.19.4 / 1.20.1]

Render stars:

• "amount": It is amounts of stars. Note that extreme values will affect the performance. (5000 or more)
• "seed": It defines a seed value used for random numbers. It means that the position of stars is defined based on this value
• "yaw/pitch/roll": These are angles of stars from the player's point of view
• "Color": This is a color of stars
• "Constant": It defines whether stars are rendered when it rains. If it is true, stars will be always rendered

If you want to render vanilla stars, use procedure templates

Render sky box:

This procedure allows you to render skybox. See the guide about how to set colors and textures

• "Mode": There are three modes of skybox
  • "END_SKY": Using only one texture, Render a skybox same as sky of The End
  • "ONE_FACE_SKY": Using only one texture, Render a skybox. But, the rotation of the texture is different from sky of The End  
  • "SIX_FACE_SKY": Using six textures, Render a skybox. See below for details
• "Yaw/Pitch/Roll": These are angles of a skybox from the player's point of view
• "Color": This is a color of a skybox
• "Constant": If there is a entity that create fog like Ender Dragon in player's dimension, It defines whether a skybox does not disappear. If it is true, a skybox will be always displayed

"SIX_FACE_SKY":

If you want a skybox that has six faces, use a texture like this. You can check directions with debug mode

The texture stitching was fixed in v1.4.1. This is equivalent to custom sky of Optifine