// draws the currently active screen
public void Draw(GraphicsDevice gd)
{
if (gd == null)
{
throw new ArgumentNullException("gd");
}
frameRateCount++;
// if a valid current screen is set
if (current != null)
{
// set the color render target
gd.SetRenderTarget(colorRT);
// draw the screen 3D scene
current.Draw3D(gd);
// resolve the color render target
gd.SetRenderTarget(null);
// blur the glow render target
//BlurGlowRenterTarget(gd);
// draw the 3D scene texture
DrawRenderTargetTexture(gd, colorRT, 1.0f, false);
// draw the glow texture with additive blending
DrawRenderTargetTexture(gd, glowRT2, 2.0f, true);
// begin text mode
fontManager.BeginText();
// draw the 2D scene
current.Draw2D(gd, fontManager);
// draw fps
//fontManager.DrawText(
// FontType.ArialSmall,
// "FPS: " + frameRate,
// new Vector2(gd.Viewport.Width - 80, 0), Color.White);
// end text mode
fontManager.EndText();
}
// if in a transition
if (fade > 0)
{
// compute transtition fade intensity
float size = fadeTime * 0.5f;
fadeColor.W = 1.25f * (1.0f - Math.Abs(fade - size) / size);
// set alpha blend and no depth test or write
gd.DepthStencilState = DepthStencilState.None;
gd.BlendState = BlendState.AlphaBlend;
// draw transition fade color
blurManager.RenderScreenQuad(gd, BlurTechnique.Color, null, fadeColor);
// restore render states
gd.DepthStencilState = DepthStencilState.Default;
gd.BlendState = BlendState.Opaque;
}
}