Use MODELVIEW_MATRIX for vertex transform when double precision is enabled

This commit updates the double precision vertex transform code from
using the MODEL_MATRIX to now use the MODELVIEW_MATRIX instead.

This can be made possible by transforming the MODELVIEW_MATRIX
back into model space (ie, same space as the MODEL_MATRIX) and then using it as if it were the MODEL_MATRIX.

With this in place we now properly handle VERTEX transformations that
a Material Shader might do, such as billboard-ing.

(cherry picked from commit 63c6f0b93ccc0f016b6b6ff7833c31371059a782)

0 files changed, 0 insertions, 0 deletions