This program tests texture coordinate generation with an unclamped diffuse function. The red component of lit color on each vertex is used to generate a coordinate for looking up a 1D texture map. The second texture coordinate can be generated by the green component; it's used to select a 1D texture line from a 2D texture map. This method can be used to perform cartoon lighting.
| Function | Parameters | Description |
GXInitLightPos |
Position coordinate (x, y, z) | Various values. |
GXInitLightColor |
Light color | Appropriate value. |
GXSetChanCtrl |
Color channel ID | Always GX_COLOR0A0. |
| Channel enable | Always GX_ENABLE. | |
| Ambient color source | Always register source. | |
| Material color source | Always register source. | |
| Light mask | Always GX_LIGHT0. | |
| Diffusion function | Always GX_DF_SIGN. | |
| Attenuation function | Always GX_AF_NONE. | |
GXSetChanAmbColor |
Ambient color | Appropriate value. |
GXSetChanMatColor |
Material color | Appropriate value. |
GXSetTexCoordGen |
Texture coordinate to be generated | Always GX_TEXCOORD0. |
| Texture coordinate generation feature | Always GX_TG_SRTG. | |
| Source | Always GX_TG_COLOR0. | |
| Matrices | Always GX_IDENTITY. |
START exits the test.
The Control Stick moves the light.
The C Stick rotates the model.
The A Button changes the model.
The B Button selects the 1D texture to use.
The X and Y Buttons select an item to control in the following order: Ambient, Light, Material.
The L and R Buttons change the brightness value of the selected item. This value is used only as the red value of the selected item.
$REVOLUTION_SDK_ROOT/dvddata/gxTests/lit-06.tpl
03/01/2006 Initial version.