} // Show()
#endregion
#region Unit Testing
#if DEBUG
/// <summary>
/// Test post screen glow
/// </summary>
public static void TestPostScreenGlow()
{
Model testModel = null;
PostScreenGlow glowShader = null;
TestGame.Start("TestPostScreenGlow",
delegate
{
testModel = new Model("Asteroid2");
glowShader = new PostScreenGlow();
},
delegate
{
//Thread.Sleep(10);
glowShader.Start();
BaseGame.skyCube.RenderSky();
testModel.Render(Vector3.Zero);
BaseGame.MeshRenderManager.Render();
if (Input.Keyboard.IsKeyDown(Keys.LeftAlt) == false &&
Input.GamePadAPressed == false)
{
glowShader.Show();
}
else
{
// Resolve first
glowShader.sceneMapTexture.Resolve(false);
started = false;
// Reset background buffer
RenderToTexture.ResetRenderTarget(true);
// Just show scene map
glowShader.sceneMapTexture.RenderOnScreen(BaseGame.ResolutionRect);
} // else
TextureFont.WriteText(2, 30,
"Press left alt or A to just show the unchanged screen.");
TextureFont.WriteText(2, 60,
"Press space or B to see all menu post screen render passes.");
//*TODO
if (Input.Keyboard.IsKeyDown(Keys.Space) || // == false)
Input.GamePadBPressed)
{
glowShader.sceneMapTexture.RenderOnScreen(
new Rectangle(10, 10, 256, 256));
glowShader.downsampleMapTexture.RenderOnScreen(
new Rectangle(10 + 256 + 10, 10, 256, 256));
glowShader.blurMap1Texture.RenderOnScreen(
new Rectangle(10 + 256 + 10 + 256 + 10, 10, 256, 256));
glowShader.blurMap2Texture.RenderOnScreen(
new Rectangle(10, 10 + 256 + 10, 256, 256));
} // if (Input.Keyboard.IsKeyDown)
});
} // TestPostScreenGlow()
} // Start()
#endregion
#region Show
/// <summary>
/// Execute shaders and show result on screen, Start(..) must have been
/// called before and the scene should be rendered to sceneMapTexture.
/// </summary>
public void Show()
{
// Only apply post screen glow if texture is valid and effect is valid
if (sceneMapTexture == null ||
Valid == false ||
started == false)
{
return;
}
started = false;
// Resolve sceneMapTexture render target for Xbox360 support
sceneMapTexture.Resolve(true);
try
{
// Don't use or write to the z buffer
BaseGame.Device.RenderState.DepthBufferEnable = false;
BaseGame.Device.RenderState.DepthBufferWriteEnable = false;
// Also don't use any kind of blending.
BaseGame.Device.RenderState.AlphaBlendEnable = false;
//unused: BaseGame.Device.RenderState.Lighting = false;
if (windowSize != null)
{
windowSize.SetValue(new float[]
{ sceneMapTexture.Width, sceneMapTexture.Height });
}
if (sceneMap != null)
{
sceneMap.SetValue(sceneMapTexture.XnaTexture);
}
if (downsampleMap != null)
{
downsampleMap.SetValue(downsampleMapTexture.XnaTexture);
}
if (blurMap1 != null)
{
blurMap1.SetValue(blurMap1Texture.XnaTexture);
}
if (blurMap2 != null)
{
blurMap2.SetValue(blurMap2Texture.XnaTexture);
}
if (radialSceneMap != null)
{
radialSceneMap.SetValue(radialSceneMapTexture.XnaTexture);
}
RadialBlurScaleFactor = //-0.0125f;
// Warning: To big values will make the motion blur look to
// stepy (we see each step and thats not good). -0.02 should be max.
-(0.005f + Player.Speed * 0.015f);
if (BaseGame.UsePS20)
{
effect.CurrentTechnique = effect.Techniques["ScreenGlow20"];
}
else
{
effect.CurrentTechnique = effect.Techniques["ScreenGlow"];
}
// We must have exactly 5 passes!
if (effect.CurrentTechnique.Passes.Count != 5)
{
throw new Exception("This shader should have exactly 5 passes!");
}
effect.Begin(); //SaveStateMode.None);
for (int pass = 0; pass < effect.CurrentTechnique.Passes.Count;
pass++)
{
if (pass == 0)
{
radialSceneMapTexture.SetRenderTarget();
}
else if (pass == 1)
{
downsampleMapTexture.SetRenderTarget();
}
else if (pass == 2)
{
blurMap1Texture.SetRenderTarget();
}
else if (pass == 3)
{
blurMap2Texture.SetRenderTarget();
}
else
{
// Do a full reset back to the back buffer
RenderToTexture.ResetRenderTarget(true);
}
EffectPass effectPass = effect.CurrentTechnique.Passes[pass];
effectPass.Begin();
// For first effect we use radial blur, draw it with a grid
// to get cooler results (more blur at borders than in middle).
if (pass == 0)
{
VBScreenHelper.Render10x10Grid();
}
else
{
VBScreenHelper.Render();
}
effectPass.End();
if (pass == 0)
{
radialSceneMapTexture.Resolve(false);
if (radialSceneMap != null)
{
radialSceneMap.SetValue(radialSceneMapTexture.XnaTexture);
}
effect.CommitChanges();
} // if
else if (pass == 1)
{
downsampleMapTexture.Resolve(false);
if (downsampleMap != null)
{
downsampleMap.SetValue(downsampleMapTexture.XnaTexture);
}
effect.CommitChanges();
} // if
else if (pass == 2)
{
blurMap1Texture.Resolve(false);
if (blurMap1 != null)
{
blurMap1.SetValue(blurMap1Texture.XnaTexture);
}
effect.CommitChanges();
} // else if
else if (pass == 3)
{
blurMap2Texture.Resolve(false);
if (blurMap2 != null)
{
blurMap2.SetValue(blurMap2Texture.XnaTexture);
}
effect.CommitChanges();
} // else if
} // for (pass, <, ++)
} // try
catch (Exception ex)
{
// Make effect invalid, continue rendering without this
// post screen shader.
effect = null;
RenderToTexture.ResetRenderTarget(true);
#if DEBUG
throw ex;
#else
Log.Write("Failed to render post screen shader " + Filename + ": " +
ex.ToString());
#endif
} // catch
finally
{
if (effect != null)
{
effect.End();
}
// Restore z buffer state
BaseGame.Device.RenderState.DepthBufferEnable = true;
BaseGame.Device.RenderState.DepthBufferWriteEnable = true;
} // finally
} // Show()
