GX_SP_FLAT.GX_SP_COS2
GX_DA_GENTLEGX_DA_STEEP
This program tests two light attenuation functions. There are two subtests in this program: angular attenuation mode and distance attenuation mode.
| Function | Parameters | Description |
GXInitLightSpot |
Cutoff angle. | Various values. |
| Spot function | GX_SP_OFF, GX_SP_FLAT, GX_SP_COS, GX_SP_COS2, GX_SP_SHARP, GX_SP_RING1, GX_SP_RING2. | |
GXInitLightDistAttn |
Light reference distance | Always GX_TEVSTAGE0. |
| Reference brightness | GX_MODULATE, GX_REPLACE. | |
| Distance attenuation function | GX_DA_OFF, GX_DA_GENTLE, GX_DA_MEDIUM, GX_DA_STEEP. | |
GXSetChanCtrl |
Color channel ID | Always GX_COLOR0. |
| Channel enable | Always GX_ENABLE. | |
| Ambient color source | Always register source. | |
| Material color source | Always register source. | |
| Light mask | GX_LIGHT0 for Color0 channel. GX_LIGHT1 for Alpha0 channel. |
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| Diffusion function | Always GX_DF_CLAMP. | |
| Attenuation function | Always GX_AF_SPOT. | |
GXSetChanAmbColor |
Ambient color | Only one value. |
GXSetChanMatColor |
Material color | Only one value. |
GXSetTevOp |
TEV stage ID | Always GX_TEVSTAGE0. |
| Mode | Always GX_MODULATE. |
START exits the test.
The B Button toggles between the angular and distance test.
Angular (Spot) Attenuation Test
The X and Y Buttons change the spot function type.
The Controller Stick (left/right) changes the cutoff angle.
Distance Attenuation Test
The X and Y Buttons change the distance attenuation function type.
The Control Stick (left/right) changes the reference distance.
The Control Stick (up/down) changes the reference brightness.
Example
Anglular, GX_SP_FLAT. |
Angular, GX_SP_COS2 |
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Distance, GX_DA_GENTLE |
Distance, GX_DA_STEEP |
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$REVOLUTION_SDK_ROOT/dvddata/gxTests/lit-10.tpl.
03/01/2006 Initial version.