Clouds Effect for C3 - Procedural clouds

This is a fun procedural effect, but currently uses a lot of GPU resources, so it might be more for tech demos than actual game development. Perhaps someone else can take the shader code and optimize it for game dev?

Based on this glsl shader code and blog post.

Effect creating using the excellent c3IDE which now has good effect support also.

Addon comes with an example project, play with the parameter values, sprite noise image and see what kind of interesting cloud flyovers you can create.

Flying over the clouds of Mars:

Addon Page

Quick porting notes:

• Deal with spritesheet (normalize UV for shader calcs and denormalize UV before shader fetch. Using srcOriginStart and srcOriginEnd)
• Change iTime to seconds
• Use decimal for iResolution (and pass through as a parameter). I don't full understand how this impacts the shader, but must be in range of (0-1)
• Flip uv.y (but must done using normalized spritesheet formula, not simple 1.0 - uv.y)
• Set fragCoord = vTex;
• Set gl_FragColor = fragColor;