The method in creating this sky sphere uses a very efficient way to save resources.
3D -> 2D
Rendering 3D Geometry Clouds into a 2D texture.
Custom Composition
Ability to use any Mesh with any composition that works efficiently.
This Cloud Tool uses a Blueprint Tool in unison with a few Material Graph’s to achieve this cheap yet stunning look.
Iteration #1
This video shows a very early iteration of this Custom Cloud Sky Tool. It uses an Offscreen buffer which stores the information into a Render Texture. This 2D texture can then be projected in a material acting as the sky sphere.
This gave me the ability to use 3D models, stored into a 2D texture, allowing for a higher grain of detail, full control over the composition of the sky, as well as a very optimised sky sphere.
Additionally, another optimisation for this cloud tool involved implementing a camera mask. This approach allowed the camera to render only the designated areas within the mask, further enhancing performance through reducing unnecessary processing
Iteration #2
This next iteration implemented several new features including:
– Custom Gradient Sky Atmosphere
– Rim Highlight around clouds closest to the sun
– More cloud variations and noise maps
– Colours adjusted by the Sun’s atmospheric position
Iteration #3
This third iteration focused on:
– New cloud meshes
– More refined composition
– Sunlight Light Rays
Iteration #4
This final iteration of the Clouds concentrated on refining establishing work:
Improving Cloud Meshes and Composition
Adjusting Colours
Using Flow Maps to direct the displacement of the clouds
This Tool gives extensive customisability over colours, composition, flow direction, displacement, intensity and more! All optimised and efficient!