public void Draw(StateSetGL stateSetGL)
{
stateSetGL.BackfaceCulling = BackfaceCulling;
stateSetGL.ShaderPointSize = ShaderPointSize;
stateSetGL.ZBufferTest = ZBufferTest;
stateSetGL.Shader = Shader;
BindTextures();
ActivateBuffers();
var vao = Vao;
if (ReferenceEquals(null, vao))
{
if (1 == InstanceCount)
{
GL.DrawArrays(PrimitiveType.Quads, 0, 4); //todo: make this general -> mesh with only vertex count? particle system, sprites
}
else
{
GL.DrawArrays(PrimitiveType.Points, 0, InstanceCount);
}
}
else
{
Vao.Draw(InstanceCount);
}
DeactivateBuffers();
UnbindTextures();
}
public Image(bool hasDepthBuffer = false)
{
if (ReferenceEquals(null, stateSetGL))
{
stateSetGL = new StateSetGL();
}
if (hasDepthBuffer)
{
actionClear = () => GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
}
else
{
actionClear = () => GL.Clear(ClearBufferMask.ColorBufferBit);
}
}
