Effects

Korender includes a set of predefined effect shaders, accessible through special material modifiers. Each effect may expose adjustable parameters, which can be configured using effect-specific uniforms.

Fire

Fire effect implements animated flames. Normally, it's used on a Billboard with transparency enabled:

Billboard(
    billboard(scale = Vec2(2f, 10f)),
    fire(strength = 4f),
    transparent = true
)

Fire effect parameters:

Uniform name	Type	Default value	Description
strength	Float	3.0f	Controls how rippled the flame appears, 1-5

Fireball

Fireball is a spherical fire-like effect that can be used for rendering explosions. Normally, it's used on a Billboard with transparency enabled:

Billboard(
    billboard(scale = Vec2(radius * phase, radius * phase)),
    fireball(power = phase),
    transparent = true
)

Fireball effect parameters:

Uniform name	Type	Default value	Description
power	Float	0.5f	Controls the fireball expansion: 0.0 for explosion initiation moment, 1.0 for the fully exploded fireball. Animate 0.0 to 1.0 for explosion effect

Smoke

Single spherical smoke particle effect. Normally, it's used on a batched Billboard with transparency enabled:

Smoke effect parameters:

Uniform name	Type	Default value	Description
density	Float	0.5f	Smoke density, 0-1
seed	Float	0.0f	Randomness seed - provide unique values for uniquely looking smoke particles 0-1

Water

Wavy water surface with sky reflections. Water is implemented as a post-process filter:

Frame{
    ... // Render the scene
    PostProcess(water(waveScale = 0.05f), fastCloudSky())
}

Water parameters:

Uniform name	Type	Default value	Description
waterColor	ColorRGB	ColorRGB(0x00182A)	Water own color
transparency	Float	0.1f	Water transparency ratio
waveScale	Float	0.04f	Waves scale ratio

Additionally, add any sky material modifier to provide sky reflections from the water