Calculating shadow map coordinates from model space or world space position.

[neon64]

I've just noticed in the shadow mapping code, the shadow map coordinates are generated by multiplying the lightMatrix with the model-space position of the vertex.

Considering that the light matrix only contains the 'view' and 'projection' parts, don't we need to do lightMatrix * vec4(worldSpacePosition, 1.0) rather than lightMatrix * vec4(modelSpacePosition, 1.0).

Or does your rendering engine include the model matrix in the lightMatrix somewhere.

This is a weird issue because it seems fine with your game, but with my own game engine (with the shadow mapping code inspired by yours) I need to use the worldSpacePosition for it to work correctly.