prosperon/source/shaders/poly_v.glsl

#version 330 core
in vec2 apos;
in vec2 auv;
in vec4 acolor;

out vec4 color;
out vec2 uv;

uniform mat4 proj;

void main()
{
  gl_Position = proj * vec4(apos, 0.0, 1.0);
  color = acolor;
  uv = auv;
}