I am a bit confused about matrices and matrix multiplication in GLSL. It is not clear to me where the entries go.
Let’s say I have a
vec2 v = vec2(1.0f, 2.0f); and a matrix
mat2 m = mat2(1.0f, 2.0f, 0.0f, 1.0f); I can multiply those two together
v = m * v;
I think GLSL interprets vectors as column vectors, which means that the matrices are filled column after column. So the multiplication above is actually [ATTACH=CONFIG]1494[/ATTACH]. Also, this means that a
mat2x3 is actually would appear as a
3x2 matrix in linear algebra, and can be multiplied from the left by a
Edit: Moreover, we can multiply
matkxn, in that order.
Is this the right interpretation?