public virtual void Draw()
{
GL.Viewport(new System.Drawing.Rectangle(0, 0, Resolution.Width, Resolution.Height));
if (MultisampleLevel > 0)
{
FboMs.Bind();
}
else
{
FrontFbo.Bind();
}
// Setup stuff
GL.DepthMask(true); // enables writing to depth buffer - needed for GL.Clear
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
// Draw the scene
GameObjectPainter.Draw(Renderer, World);
// Resolve multisampling
if (MultisampleLevel > 0)
{
// We have to blit to another fbo to resolve multisampling before readPixels and postprocessing, unfortunatelly
FboMs.Bind(FramebufferTarget.ReadFramebuffer);
FrontFbo.Bind(FramebufferTarget.DrawFramebuffer);
GL.BlitFramebuffer(
0, 0, FboMs.Size.X, FboMs.Size.Y,
0, 0, FrontFbo.Size.X, FrontFbo.Size.Y,
ClearBufferMask.ColorBufferBit,
BlitFramebufferFilter.Linear);
if (ImagePainter.Settings.CopyDepth || EffectPainter.Settings.EnabledEffects != RenderRequestEffect.None)
{
GL.BlitFramebuffer(
0, 0, FboMs.Size.X, FboMs.Size.Y,
0, 0, FrontFbo.Size.X, FrontFbo.Size.Y,
ClearBufferMask.DepthBufferBit,
BlitFramebufferFilter.Nearest);
}
}
// Draw effects after multisampling to save fragment shader calls
EffectPainter.Draw(Renderer, World);
// Depth testing is useless for these
GL.Disable(EnableCap.DepthTest);
PostprocessPainter.Draw(Renderer, World);
OverlayPainter.Draw(Renderer, World);
// Tell OpenGL driver to submit any unissued commands to the GPU
GL.Flush();
}
