public Texture this[FramebufferAttachment attachment]
{
set
{
bindings[attachment] = value;
GPUStateMachine.BindFramebuffer(id);
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, attachment, value.texTarget, value.id, 0);
GL.DrawBuffers(bindings.Keys.Count,
bindings.Keys.OrderByDescending((a) => (int)a).Reverse().Cast <DrawBuffersEnum>().ToArray());
if (GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer) != FramebufferErrorCode.FramebufferComplete)
{
throw new Exception("Incomplete Framebuffer!");
}
GPUStateMachine.UnbindFramebuffer();
}
get
{
if (bindings.ContainsKey(attachment))
{
return(bindings[attachment]);
}
else
{
return(null);
}
}
}
public static void Draw(PrimitiveType type, int first, int count)
{
if (count == 0)
{
return;
}
if (curVarray == null)
{
return;
}
if (curProg == null)
{
return;
}
if (curFramebuffer == null)
{
return;
}
for (int i = 0; i < textures.Count; i++)
{
GPUStateMachine.BindTexture(i, textures[i].texTarget, textures[i].id);
}
for (int i = 0; i < feedbackBufs.Count; i++)
{
GPUStateMachine.BindBuffer(BufferTarget.TransformFeedbackBuffer, feedbackBufs[i].Item1.id, i, (IntPtr)feedbackBufs[i].Item2, (IntPtr)feedbackBufs[i].Item3);
}
GPUStateMachine.BindFramebuffer(curFramebuffer.id);
if (feedbackBufs.Count > 0)
{
GL.BeginTransformFeedback((TransformFeedbackPrimitiveType)feedbackPrimitive);
}
GL.UseProgram(curProg.id);
GPUStateMachine.BindVertexArray(curVarray.id);
if (curIndices != null)
{
GPUStateMachine.BindBuffer(BufferTarget.ElementArrayBuffer, curIndices.id);
}
if (curIndices != null)
{
GL.DrawElements(type, count, DrawElementsType.UnsignedInt, IntPtr.Zero);
}
else
{
GL.DrawArrays(type, first, count);
}
if (feedbackBufs.Count > 0)
{
GL.EndTransformFeedback();
}
for (int i = 0; i < feedbackBufs.Count; i++)
{
GPUStateMachine.UnbindBuffer(BufferTarget.TransformFeedbackBuffer, i);
}
for (int i = 0; i < textures.Count; i++)
{
GPUStateMachine.UnbindTexture(i, textures[i].texTarget);
}
textures.Clear();
feedbackBufs.Clear();
}