Color combiner

The color combiner basically performs this equation: color = (A - B) × C + D

A, B, C and D can come from many different sources.

Value	A	B	C	D	A alpha	B alpha	C alpha	D alpha
0	Y	Y	Y	Y	Y	Y	Y	Y
1	Y			Y	Y			Y
Texture 0	Y	Y	Y	Y
Texture 1	Y	Y	Y	Y
Primitive color	Y	Y	Y	Y
Shade color	Y	Y	Y	Y
Environment color	Y	Y	Y	Y
Combined color	Y	Y	Y	Y
Texture 0 alpha			Y		Y	Y	Y	Y
Texture 1 alpha			Y		Y	Y	Y	Y
Primitive color alpha			Y		Y	Y	Y	Y
Shade color alpha			Y		Y	Y	Y	Y
Environment color alpha			Y		Y	Y	Y	Y
Combined color alpha			Y		Y	Y		Y
Noise	Y
Chroma key center		Y
Chroma key scale			Y
YUV convert K4		Y
YUV convert K5			Y
LOD fraction			Y				Y
Primitive LOD fraction			Y				Y

Presets (Fast64)

Preset	A	B	C	D	A alpha	B alpha	C alpha	D alpha
Unlit Texture	0	0	0	Texture 0	0	0	0	Environment color alpha
Unlit Texture Cutout	0	0	0	Texture 0	Texture 0 alpha	0	Environment color alpha	0
Shaded Solid	0	0	0	Shade color	0	0	0	Environment color alpha
Decal On Shaded Solid	Texture 0	Shade color	Texture 0 alpha	Shade color	0	0	0	Environment color alpha
Shaded Texture	Texture 0	0	Shade color	0	0	0	0	Environment color
Shaded Texture Cutout	Texture 0	0	Shade color	0	Texture 0 alpha	0	Environment color alpha	0
Shaded Texture Cutout Transparent (Prim Alpha)	Texture 0	0	Shade color	0	Texture 0 alpha	0	Primitive color alpha	0
Vertex Colored Texture	Texture 0	0	Shade color	0	Environment color alpha	0	Shade color alpha	0
Environment Mapped	0	0	0	Texture 0	0	0	0	Environment color alpha
Fog Shaded Texture
Fog Shaded Texture Cutout
Fog Shaded Texture Cutout Transparent (Prim Alpha)
Vertex Colored Texture Transparent	Texture 0	0	Shade color	0	Texture 0 alpha	0	Shade color alpha	0
Shaded Noise	Noise	0	Shade color	0	0	0	0	Environment color alpha
Vertex Colored Texture (No Vertex Alpha)	Texture 0	0	Shade color	0	0	0	0	Texture 0 alpha