[SOLVED] Using matrices in shaders

I'm using float4x4 matrix in my UI shader to ajust image colors. When app starts, I create a bunch of materials and push matrices to them using Material.SetMatrix. When app is running, it assign those materials to canvas images where appopriate, like this:

Code (CSharp):

1. image.material = chooseMaterial(conditions);

Inside the fragment function I do

Code (CSharp):

1. color = mul(_Matrix, color);

But the frame debugger shows what all matrices in shaders are identity matrices. I can push my matrix only with

Code (CSharp):

1. graphic.materialForRendering.SetMatrix(myMatrix);

When added this line, everything working as expected.

It looks like CanvasRenderer using some kind of material copy to render itself instead of given instance. How can I force it to use my material instance or to save my _Matrix variable value in this materialForRendering?

 

The solution is to use 4 Vectors in parameters block and replace 1 matrix x vector multiplication with 4 dot products like this:

Code (CSharp):

1. color.x = dot(color, _row1)