source: data/data_extern/programs/GLSL400/TessellationTd.glsl

#version 400 core

uniform mat4 g_mWorldViewProjection;

// GLSL tessellation evaluation shader (domain shader in HLSL).
layout(triangles, equal_spacing, cw) in;
void main()
{
    // Baricentric interpolation
    vec3 finalPos = vec3(gl_TessCoord.x * gl_in[0].gl_Position + 
                         gl_TessCoord.y * gl_in[1].gl_Position + 
                         gl_TessCoord.z * gl_in[2].gl_Position);
    gl_Position = g_mWorldViewProjection * vec4(finalPos, 1.0);
}