tess-vk/tess.tese

#version 450
#extension GL_ARB_separate_shader_objects : enable

layout(quads, equal_spacing, ccw, point_mode) in;

void main() {
	float x = (gl_TessCoord.x - 0.5) * 2.0;
	float y = (gl_TessCoord.y - 0.5) * 2.0;
	gl_Position = vec4(x * 0.9, y * 0.9, 0.5, 1.0);
}