#version 110

// example vert shader with attributes to infer part-scoped variables.
uniform sampler2D partValues;
uniform float partIndex_val1;
uniform float partIndex_val2;
attribute float partSlot;

varying float z;

void main(void)
{
    // remember! unused vars will be optimized out by the linker. so use them!
    vec4 n = texture2D(partValues,vec2(partIndex_val1, partIndex_val2));
    n *= partSlot;
    gl_Position = n;
    z = 0.0;
}