<?xml version="1.0"?>
<shader>
    <vertex>
        #version 330

        uniform mat4 projMatrix;
        uniform mat4 worldMatrix;

        in vec3 vertex;
        in vec2 vertexUv;

        // Output data ; will be interpolated for each fragment.
        out vec2 uv;

        void main(void) {
            vec4 v = vec4(vertex, 1);
            gl_Position = projMatrix * worldMatrix * v;
            uv = vertexUv;
        }
    </vertex>
    <fragment>
        #version 330

        // Interpolated values from the vertex shaders
        in vec2 uv;
        uniform sampler2D texture;

        // Ouput data
        out vec3 color;

        void main(void) {
            color = texture2D(texture, uv).rgb;
            //color = vec3(1, 0, 0);
        }
    </fragment>
</shader>