reflect — calculate the reflection direction for an incident vector
genType reflect( | genType I, |
genType N); |
I Specifies the incident vector.
N Specifies the normal vector.
For a given incident vector I and surface normal N reflect returns the reflection direction calculated as I - 2.0 * dot(N, I) * N
N should be normalized in order to achieve the desired result.
| OpenGL ES Shading Language Version | |||
|---|---|---|---|
| Function Name | 1.00 | 3.00 | 3.10 |
| reflect (genType) | ✔ | ✔ | ✔ |
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