/// <summary>
/// Renders a single frame of the game, and also ticks.
/// </summary>
/// <param name="sender">Irrelevant.</param>
/// <param name="e">Holds the frame time (delta).</param>
private void Window_RenderFrame(object sender, FrameEventArgs e)
{
try
{
StackNoteHelper.Push("GameClientWindow - Render and tick frame", this);
// First step: check delta
if (e.Time <= 0.0)
{
return;
}
// Mouse handling
PreviousMouse = CurrentMouse;
CurrentMouse = Mouse.GetState();
// Standard pre-tick
PreTick(e.Time);
ErrorCode ec = GL.GetError();
while (ec != ErrorCode.NoError)
{
SysConsole.Output(OutputType.WARNING, "Uncaught GL Error: " + ec);
ec = GL.GetError();
}
// Second step: clear the screen
GL.ClearBuffer(ClearBuffer.Color, 0, ScreenClearColor);
GL.ClearBuffer(ClearBuffer.Depth, 0, DepthClear);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
GL.DrawBuffer(DrawBufferMode.Back);
GraphicsUtil.CheckError("GameClient - Pre");
// Tick helpers
Models.Update(GlobalTickTime);
GraphicsUtil.CheckError("GameClient - PostModelUpdate");
// Third step: general game rendering
CurrentEngine.RenderSingleFrame();
GraphicsUtil.CheckError("GameClient - PostMainEngine");
// Add the UI Layer too
MainUI.Draw();
GraphicsUtil.CheckError("GameClient - PostUI");
// Fourth step: clean up!
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.BindVertexArray(0);
GL.UseProgram(0);
// Semi-final step: Tick logic!
GraphicsUtil.CheckError("GameClient - PreTick");
// Main instance tick.
Tick();
// Primary UI tick
MainUI.Tick();
Resized = false;
GraphicsUtil.CheckError("GameClient - PostTick");
// Final step: Swap the render buffer onto the screen!
Window.SwapBuffers();
GraphicsUtil.CheckError("GameClient - Post");
}
finally
{
StackNoteHelper.Pop();
}
}