tg-light-fx

Description

This program performs some effects using texgen by vertex normals. There are three effects currently implemented. One is a cheap cartoon outline effect. The other two are textured specular highlight using two different types of texgen matrices.

Coverage

Functions	Parameters	Description
`GXLoadTexMtxImm`	Matrices	Appropriate projection matrix.
	Matrix destination.	`GX_TEXMTX0`
	Types	`GX_MTX2x4`
`GXSetTexCoordGen`	Destination coordinates.	`GX_TEXCOORD0.`
	Generation type.	`GX_TG_MTX2x4`
	Generation source.	`GX_TG_NRM`
	Matrix source.	`GX_TEXMTX0`
`GXInitTexObj`	Image pointer.	Appropriate value.
	Width and height	Appropriate value.
	format	`GX_TF_IA8`, `GX_TF_IA4`
	Wrap mode (s, t).	Always `GX_CLAMP`.
	Mipmap	Always `GX_FALSE`.
`GXLoadTexObj`	Destination texture name.	`GX_TEXMAP0`
`GXSetTevOp`	TEV stage ID.	Always `GX_TEVSTAGE0`.
`GXSetTevOp`	Operation mode	Always `GX_DECAL`.

Using the Demo

START exits the test.

The Control Stick moves the light position.
The C Stick rotates the object.

The A Button changes the effect mode.

The B Button hides the light direction mark.

The L/R buttons tune parameters for the current effect.

Snap Shots

Cheap cartoon outline.

tg-light-fx-0.jpg (6022 bytes)

Specular highlight by 1D texgen.

tg-light-fx-1.jpg (7491 bytes)

Specular highlight by 2D texgen.

tg-light-fx-2.jpg (6747 bytes)

Data Files Required

None.

Revision History

2006/03/01 Initial version.

CONFIDENTIAL