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Class "BlendMode"⚓︎

Determines how a LayerState should blend with the elements rendered behind it. Specifically, these parameters are used in calls to glBlendFuncSeparate.

Info

You can get this class by using the following functions:

Example Code 
1
local blendMode = Sprite():GetLayer(0):GetBlendMode()

Functions⚓︎

SetMode ()⚓︎

void SetMode ( BlendType Type )⚓︎

Mode usages

The game uses:

  • CONSTANT for the flat blue Planetarium backdrop layer and the flat color layers of the Hell backdrop
  • NORMAL as the default value
  • ADDITIVE for Planetarium backdrop starfield layers, 8bitclouds_utero backdrop layer, the lava_add layer of the Hell backdrop, Beast death spotlight, and various other misc effects
  • MULTIPLICATIVE for EffectVariant.HALO (specifically the one used by Cursed Death's Head), EffectVariant.PURGATORY, and the lava_multiply layer of the Hell backdrop
  • OVERLAY for EffectVariant.HUSH_ASHES & the overlay layer of the Boss Intro versus Sprite
Nonstandard modes

There have also been a couple nonstandard modes seen used for specific situations:

  • EffectVariant.BACKDROP_DECORATION, as used by Mother for the fake backdrop wall, uses { RGBSourceFactor.ZERO, RGBDestinationFactor.SRC_COLOR, AlphaSourceFactor.ONE, AlphaDestinationFactor.ONE }
  • Light rendering uses { RGBSourceFactor.DST_COLOR, RGBDestinationFactor.DST_ALPHA, AlphaSourceFactor.DST_COLOR, AlphaDestinationFactor.ONE_MINUS_SRC_ALPHA }

Variables⚓︎

AlphaDestinationFactor⚓︎

BlendFactor AlphaDestinationFactor⚓︎

ZERO in mode CONSTANT, ONE_MINUS_SRC_ALPHA in mode NORMAL and OVERLAY, ONE in mode ADDITIVE, and SRC_COLOR in MULTIPLICATIVE.

Depreciation history

This variable was previously known as Flag4.

AlphaSourceFactor⚓︎

BlendFactor AlphaSourceFactor⚓︎

ZERO in mode MULTIPLICATIVE, ONE in all other modes.

Depreciation history

This variable was previously known as Flag3.

RGBDestinationFactor⚓︎

BlendFactor RGBDestinationFactor⚓︎

ZERO in mode CONSTANT, ONE_MINUS_SRC_ALPHA in mode NORMAL and OVERLAY, ONE in mode ADDITIVE, and SRC_COLOR in MULTIPLICATIVE.

Depreciation history

This variable was previously known as Flag2.

RGBSourceFactor⚓︎

BlendFactor RGBSourceFactor⚓︎

ZERO in mode MULTIPLICATIVE, ONE in all other modes (there's a possibility for this to be SRC_ALPHA if an internal UsePremultipliedAlpha variable in the graphics manager class isn't set, but this has not yet been observed)

Depreciation history

This variable was previously known as Flag1.