Using texture modes

The Texture mode in TextureAttributes controls how texture pixels affect shape color

REPLACE	Texture color completely replaces the shape's material color
DECAL	Texture color is blended as a decal on top of the shape's material color
MODULATE	Texture color modulates (filters) the shape's material color
BLEND	Texture color blends the shape's material color with an arbitrary blend color

 

Mode	Result color	Result transparency
REPLACE	Trgb	Ta
DECAL	Srgb*(1-Ta)+Trgb*Ta	Sa
MODULATE	Srgb*Trgb	Sa*Ta
BLEND	Srgb*(1-Trgb)+Brgb*Trgb	Sa*Ta

Where:

• S_rgb is the color of the shape being texture mapped

• S_a is the alpha of the shape being texture mapped

• T_rgb is the texture pixel color

• T_a is the texture pixel alpha

• B_rgb is the shape blend color

• B_a is the shape blend alpha

• REPLACE is the default mode

• Black is the default blend color