DECLARATION
-
genType faceforward(genType N, genType I, genType Nref);
- genDType faceforward(genDType N, genDType I, genDType Nref);
PARAMETERS
N
-
- Specifies the vector to orient.
I
- Specifies the incident vector.
Nref
- Specifies the reference vector.
DESCRIPTION
faceforward orients a vector to point away from a surface as defined by its normal. If dot()(Nref, I) < 0faceforward returns N, otherwise it returns -N.
VERSION SUPPORT
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OpenGL Shading Language Version
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| Function Name | 1.10 | 1.20 | 1.30 | 1.40 | 1.50 | 3.30 | 4.00 | 4.10 | 4.20 | 4.30 | 4.40 |
4.50
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| faceforward (genType) | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
✔
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| faceforward (genDType) | - | - | - | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ |
✔
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COPYRIGHT
Copyright © 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. m[blue]http://opencontent.org/openpub/m[].
COPYRIGHT
Copyright © 2011-2014 Khronos Group