source/blender/draw/engines/overlay/shaders/edit_uv_image_vert.glsl


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#pragma BLENDER_REQUIRE(common_view_lib.glsl)

void main()
{
  /* `pos` contains the coordinates of a quad (-1..1). but we need the coordinates of an image
   * plane (0..1) */
  vec3 image_pos = pos * 0.5 + 0.5;
  vec4 position = point_object_to_ndc(image_pos);
  gl_Position = position;
  uvs = image_pos.xy;
}