* Use a clip space that matches our screen space for the z axis
We now set the projection matrix so that the clip space for the z
axis follows the inverted DX convention, i.e.: z_clip between 1 (near)
and 0 (far), which matches our screen space.
Note that the actual clip space in the GPU can revert to the "inverted
GL convention", i.e.: z_clip between -1 and 1, if the clip_control
extension is not present. In that case the precision benefits are
mostly lost.
Also note that there shouldn't be any user facing changes.
The projection matrix at the API level, still follows the GL convention.
Also, currently, the VERTEX_DOMAIN_DEVICE for materials also keeps
the GL convention (this is corrected in the vertex shader).
The gist of this change is to move the "reversed DX" mapping from the
vertex shader to the projection matrix.
* Update shaders/src/getters.vs
Co-authored-by: Ben Doherty <bendoherty@google.com>
Co-authored-by: Ben Doherty <bendoherty@google.com>
Mathias AgopianandBen Doherty
7278e5b5ba