Game Development Community

Inverse View matrix in shaders

by Ilusis · in Torque Game Engine Advanced · 09/25/2009 (6:47 pm) · 2 replies

I'm having some troubles using shaders in torque, I need to use the Inverse View and Inverse World matrices, but I can't find anywhere how to do it. It would be great if someone could help me! (sorry for my english, not my first language)
NextNext Thread
PrevPrevious Thread
More from Torque Game Engine Advanced


Torque Owner Adrian W
#1
10/03/2009 (2:34 pm)
I think you might have to do quite a bit of hacking to do this because TGEA passes in a single model-view-projection matrix. If you look at method

ProcessedShaderMaterial::setTransforms()

it should give you some idea of where start. I think you'd have to do something like add some new handles to class ShaderConstHandles and then populate them in the above function, something like

MatrixF viewInverse(view);
viewInverse.affineInverse();
shaderConsts->set(handles->mMyInverseViewHandle, viewInverse);

and edit shaders\shdrConsts.h to match.

Torque 3D Owner Ilusis
#2
10/06/2009 (6:53 pm)
Thanks!