ps_blend.glsl could be using a mat3 instead of a mat4

[mstange]

All the matrices generated in ps_blend.glsl only make use of the top left 3x3 square of the matrix. I think this matrix could use the mat3 type instead, and the fragment shader could be doing oFragColor = vec4(vColorMat * Cs.rgb, Cs.a), which should be a bit cheaper.

[doraemon96]

Is this still needed? Im guessing the file is now brush_blend.glsl

I could look into this in a week or so. If someone else wants to do it, be my guest

[glennw]

Yup, it's brush_blend.glsl now, and no-one else is working on it yet, so go for it!