private static void DrawPolygonUv(NUD.Polygon p, int windowWidth, int windowHeight)
{
Shader shader = OpenTKSharedResources.shaders["UV"];
shader.UseProgram();
shader.EnableVertexAttributes();
uvPositionVbo.Bind();
// Draw over everything
GL.Disable(EnableCap.DepthTest);
GL.Disable(EnableCap.CullFace);
GL.Clear(ClearBufferMask.DepthBufferBit);
// Scale to 0 to 1 UV space and flip vertically.
Matrix4 matrix = Matrix4.CreateOrthographicOffCenter(0, 1, 1, 0, -1, 1);
shader.SetMatrix4x4("mvpMatrix", ref matrix);
SetVertexAttributes(shader);
// Draw the uvs.
GL.LineWidth(1.5f);
GL.Enable(EnableCap.LineSmooth);
uvElementsIbo.Bind();
GL.DrawElements(PrimitiveType.Triangles, p.displayFaceSize, DrawElementsType.UnsignedInt, p.Offset);
shader.DisableVertexAttributes();
}
public UvViewer(NUD sourceNud, NUD.Polygon polygonToRender)
{
// We need the nud to generate buffers due to the way nud rendering works.
InitializeComponent();
this.sourceNud = sourceNud;
this.polygonToRender = polygonToRender;
}
public static void DrawUv(NUD.Polygon polygon, int windowWidth, int windowHeight)
{
if (uvPositionVbo == null)
{
return;
}
DrawPolygonUv(polygon, windowWidth, windowHeight);
}
