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Tips & Tricks: Viewing Transforms

guestposter guestposter
Note: This was originally posted on 27th October 2009 at http://forums.arm.com

How OpenGL ES handles matrices...
When you multiply the position vector with several matrices to achieve transformations such as translation, rotation, scaling or projection, the effect when applying the resulting matrix on a position vector is as if the individual matrix multiplication operations were performed from right to left.
The usual sequence of matrices is, from left to right:
1. Projection matrix
2. View matrix
3. Any number of model transformation matrices, from most global to most local.
You must then multiply the resulting matrix by the vertex position with the matrix on the left.
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