examples/material/uvgradient/example/uvgradient.vp

// Positions can be world or local space, since world and normal
// matrices are identity for world vertex space materials.
// If world vertex space is selected, you can remove the
// normal matrix multiplication for optimal performance.

attribute highp vec4 position;
attribute mediump vec2 texcoord0;
attribute mediump vec3 normal;

uniform mediump mat4 mtx_worldview;
uniform mediump mat4 mtx_view;
uniform mediump mat4 mtx_proj;
uniform mediump mat4 mtx_normal;

varying mediump vec2 var_texcoord0;

void main()
{
    vec4 p = mtx_worldview * vec4(position.xyz, 1.0);
    var_texcoord0 = texcoord0;
    gl_Position = mtx_proj * p;
}