GXSetTevKAlphaSel

C Specification

#include <revolution/gx.h>

void GXSetTevKAlphaSel(
GXTevStageID     stage,
GXTevKAlphaSel   sel );

Arguments

stage name of the TEV stage
Accepted values are: GX_TEVSTAGE0, GX_TEVSTAGE1, GX_TEVSTAGE2 through GX_TEVSTAGE15.

sel

selects the constant alpha to be used for this stage
Accepted values are:

Name	Constant Alpha Source
`GX_TEV_KASEL_K0_R`	constant color register 0 (red)
`GX_TEV_KASEL_K1_R`	constant color register 1 (red)
`GX_TEV_KASEL_K2_R`	constant color register 2 (red)
`GX_TEV_KASEL_K3_R`	constant color register 3 (red)
`GX_TEV_KASEL_K0_G`	constant color register 0 (green)
`GX_TEV_KASEL_K1_G`	constant color register 1 (green)
`GX_TEV_KASEL_K2_G`	constant color register 2 (green)
`GX_TEV_KASEL_K3_G`	constant color register 3 (green)
`GX_TEV_KASEL_K0_B`	constant color register 0 (blue)
`GX_TEV_KASEL_K1_B`	constant color register 1 (blue)
`GX_TEV_KASEL_K2_B`	constant color register 2 (blue)
`GX_TEV_KASEL_K3_B`	constant color register 3 (blue)
`GX_TEV_KASEL_K0_A`	constant color register 0 (alpha)
`GX_TEV_KASEL_K1_A`	constant color register 1 (alpha)
`GX_TEV_KASEL_K2_A`	constant color register 2 (alpha)
`GX_TEV_KASEL_K3_A`	constant color register 3 (alpha)
`GX_TEV_KASEL_8_8 GX_TEV_KASEL_1`	fixed constant 1
`GX_TEV_KASEL_7_8`	fixed constant 7/8
`GX_TEV_KASEL_6_8` `GX_TEV_KASEL_3_4`	fixed constant 3/4
`GX_TEV_KASEL_5_8`	fixed constant 5/8
`GX_TEV_KASEL_4_8 GX_TEV_KASEL_1_2`	fixed constant 1/2
`GX_TEV_KASEL_3_8`	fixed constant 3/8
`GX_TEV_KASEL_2_8 GX_TEV_KASEL_1_4`	fixed constant 1/4
`GX_TEV_KASEL_1_8`	fixed constant 1/8

Return Values

None.

Description

This function selects the constant alpha input to be used on the given TEV stage. The constant alpha input is only used when GX_CA_KONST is selected as that TEV stage input. It can be used for one or more inputs, but only one constant alpha input can be used for one TEV stage.

Revision History