GLSL Shader Error - “uniform specified with different precisions”

I’m getting this mysterious error in UrhoSharp for my GLSL shaders:

“Error: uniform cColor specified with different precision in different shaders”

I get this for all of my uniforms.

uniform vec4 cColor;

Is how it’s specified.

1. Try to set uniform precision explicitly.
   Keep in mind that highp may be unsupported in pixel shader, so stick with meduimp or lowp .

2. Try to explicitly guard out uniforms that are used only in one shader (vertex or pixel) with #ifdef COMPILEVS / #ifdef COMPILEPS

Eugene, that advice was perfect, thank you! It solved my problem completely.

I didn’t have the #ifdef COMPILEVS (or PS), and I also added the ‘mediump’ specifiers to be more explicit.