Programs

Render programs

Programs are selected based on the transparency of the Flywheel material.

clrwl_gbuffers is the only required program, other gbuffer programs fallback to it.
clrwl_shadow is optional: if absent, Flywheel instances won’t be rendered in the shadow pass.

Gbuffer Program	Transparency	Default blending mode
clrwl_gbuffers	opaque	-
clrwl_gbuffers_additive	additive	ONE ONE ONE ONE
clrwl_gbuffers_lightning	lightning	SRC_ALPHA ONE ONE ONE
clrwl_gbuffers_glint	glint	SRC_COLOR ONE ZERO ONE
clrwl_gbuffers_translucent	translucent, order independant	SRC_ALPHA ONE_MINUS_SRC_ALPHA ONE ONE_MINUS_SRC_ALPHA
clrwl_gbuffers_damagedblock	crumbling	DST_COLOR SRC_COLOR ONE ZERO

By default, all shadow programs have their blending disabled.

Shadow Program	Transparency
clrwl_shadow	opaque
clrwl_shadow_additive	additive
clrwl_shadow_lightning	lightning
clrwl_shadow_glint	glint
clrwl_shadow_translucent	translucent, order independant

Warning

Even though missing gbuffers programs fallback to clrwl_gbuffers, they retain their default blending mode.

Warning

Order Independant blending is more complicated than a simple blending mode, refer to the Order Independant Transparency page.

Rendering Order

Opaques, additives, lightnings and glint geometries are rendered before the block entities.
Translucents geometries are rendered before the translucent terrain.

Note

The rendering order causes translucent terrain (like water) to be invisible when viewed through Flywheel translucent geometry.

Compute programs

clrwl_shadow_distort

The clrwl_shadow_distort program provides the shadow distort functions used within the shaderpack to Colorwheel.

The functions that must be implemented are clrwl_distortShadowClipXY and clrwl_distortShadowClipZ.

Warning

This program is included into an internal Colorwheel program, and thus should not implement the main() function.

Warning

This program should not access a texture or an SSBO.