/// <summary>
/// Function called when the application goes into an idle state.
/// </summary>
/// <returns><b>true</b> to continue executing, <b>false</b> to stop.</returns>
private static bool Idle()
{
if (_lightBrightDir)
{
_lightValue += 1.0f * GorgonTiming.Delta;
}
else
{
_lightValue -= 1.0f * GorgonTiming.Delta;
}
if (_torchFrameTime.Milliseconds > 250)
{
_torchSprite.TextureRegion =
_torchTexture.Texture.ToTexel(new DX.Rectangle(_torchSprite.TextureRegion.Left == 0 ? 56 : 0, 0, 55, _torchTexture.Height));
_torchFrameTime.Reset();
_lightValue = _torchSprite.TextureRegion.Left == 0 ? _lightMinMax.Maximum : _lightMinMax.Minimum;
}
if (_lightValue < _lightMinMax.Minimum)
{
_lightValue = _lightMinMax.Minimum;
_lightBrightDir = !_lightBrightDir;
}
if (_lightValue > _lightMinMax.Maximum)
{
_lightValue = _lightMinMax.Maximum;
_lightBrightDir = !_lightBrightDir;
}
_lightEffect.Lights[0].Color = new GorgonColor((_lightValue * 253.0f) / 255.0f, (_lightValue * 248.0f) / 255.0f, (_lightValue * 230.0f) / 255.0f);
_lightEffect.Lights[0].SpecularPower = (1.0f - (_lightValue / 1.2f)) * 15;
_finalTarget.Clear(GorgonColor.BlackTransparent);
_screen.RenderTargetView.Clear(GorgonColor.Black);
// Render the lit sprite.
_lightEffect.Render(DrawLitScene, _finalTarget);
// Blit our final texture to the main screen.
_graphics.SetRenderTarget(_screen.RenderTargetView);
_renderer.Begin();
_renderer.DrawFilledRectangle(new DX.RectangleF(0, 0, _screen.Width, _screen.Height),
GorgonColor.White,
_finalTexture,
new DX.RectangleF(0, 0, 1, 1));
_renderer.DrawSprite(_torchSprite);
_renderer.DrawString($"Specular Power: {_lightEffect.Lights[0].SpecularPower:0.0#####}\nLight [c #{GorgonColor.CornFlowerBlue.ToHex()}]Z[/c]: {_lightEffect.Lights[0].Position.Z:0.0}",
new DX.Vector2(0, 64));
_renderer.End();
GorgonExample.DrawStatsAndLogo(_renderer);
_screen.Present(1);
return(true);
}
/// <summary>
/// Function to rent a render target from the factory.
/// </summary>
/// <param name="targetInfo">The information about the render target to retrieve.</param>
/// <param name="name">A unique user defined name for a new render target.</param>
/// <param name="clearOnRetrieve">[Optional] <b>true</b> to clear the render target when retrieved, or <b>false</b> to leave the contents as-is.</param>
/// <returns>The requested render target.</returns>
/// <exception cref="ArgumentNullException">Thrown when the <paramref name="targetInfo"/>, or the <paramref name="name"/> parameter is <b>null</b>.</exception>
/// <exception cref="ArgumentException">Thrown when the <paramref name="name"/> parameter is empty.</exception>
/// <remarks>
/// <para>
/// All calls to this method should be paired with a call to the <see cref="Return"/> method. Failure to do so may result in a leak.
/// </para>
/// <para>
/// The optional <paramref name="clearOnRetrieve"/> parameter, if set to <b>true</b>,, will clear the contents of a render target that is being reused
/// prior to returning it. In some cases this is not ideal, so setting it to <b>false</b> will preserve the contents. New render targets will always
/// be cleared.
/// </para>
/// <note type="caution">
/// <para>
/// For performance reasons, any exceptions thrown from this method will only be thrown when Gorgon is compiled as DEBUG.
/// </para>
/// </note>
/// </remarks>
public GorgonRenderTarget2DView Rent(IGorgonTexture2DInfo targetInfo, string name, bool clearOnRetrieve = true)
{
name.ValidateString(nameof(name));
targetInfo.ValidateObject(nameof(targetInfo));
ExpireTargets();
// Ensure the information is valid.
GorgonTexture2DInfo newInfo = _textureInfoAllocator.Allocate();
newInfo.Copy(name, targetInfo);
newInfo.Binding = targetInfo.Binding | TextureBinding.RenderTarget | TextureBinding.ShaderResource;
newInfo.Usage = ResourceUsage.Default;
for (int i = 0; i < _renderTargets.Count; ++i)
{
GorgonRenderTarget2DView rtv = _renderTargets[i];
GorgonTexture2D target = _renderTargets[i].Texture;
if ((!_rented.Contains(rtv)) && (target.Width == newInfo.Width) && (target.Height == newInfo.Height) && (target.MipLevels == newInfo.MipLevels) &&
(target.ArrayCount == newInfo.ArrayCount) && (target.Format == newInfo.Format) && (target.Binding == newInfo.Binding) &&
(target.MultisampleInfo.Equals(newInfo.MultisampleInfo)) && (newInfo.IsCubeMap == target.IsCubeMap) &&
(string.Equals(newInfo.Name, rtv.Texture.Name, StringComparison.OrdinalIgnoreCase)))
{
if (clearOnRetrieve)
{
rtv.Clear(GorgonColor.BlackTransparent);
}
_renderTargets.Remove(rtv);
_expiryTime.Remove(rtv);
_rented.Add(rtv);
return(rtv);
}
}
if (_renderTargets.Count == 0)
{
_expiryTimer.Reset();
}
var newRtv = GorgonRenderTarget2DView.CreateRenderTarget(_graphics, newInfo);
// Cache a default shader resource view (the texture holds the cache, we hold a separate one so we can clean it up later).
_srvs.Add(newRtv.GetShaderResourceView());
newRtv.OwnerFactory = this;
_rented.Add(newRtv);
newRtv.Clear(GorgonColor.BlackTransparent);
return(newRtv);
}
/// <summary>
/// Function to begin the execution of the application context.
/// </summary>
public void RunMe()
{
string annoyUser = "******";
int counter = 0;
try
{
_timer.Reset();
_splashScreen.Show();
_splashScreen.UpdateText("This is the splash screen.");
// Fade in the splash screen about 10% every 7 milliseconds.
while (_splashScreen.Opacity < 1)
{
if (!(_timer.Milliseconds > 7))
{
continue;
}
_timer.Reset();
_splashScreen.Opacity += 0.01;
}
// Annoy the user. They're asking for it.
while (counter < 5)
{
while (_timer.Seconds > 1)
{
if (annoyUser.Length < 50)
{
annoyUser += ".";
}
else
{
annoyUser = "******";
}
_splashScreen.UpdateText(annoyUser);
_timer.Reset();
counter++;
}
}
// Fade it out.
while (_splashScreen.Opacity > 0.02)
{
if (!(_timer.Milliseconds > 5))
{
continue;
}
_timer.Reset();
_splashScreen.Opacity -= 0.01;
}
// Resize the main form to 640 x 480.
MainForm.KeyDown += MainForm_KeyDown;
MainForm.Deactivate += (sender, args) => GorgonApplication.Log.Print("Application is deactivated. Loops will pause.", LoggingLevel.All);
MainForm.Activated += (sender, args) => GorgonApplication.Log.Print("Application is activated. Loops will run.", LoggingLevel.All);
MainForm.ClientSize = new Size(640, 480);
MainForm.Show();
}
catch (Exception ex)
{
// If we get an error, then leave the application.
GorgonDialogs.ErrorBox(MainForm, ex);
MainForm?.Dispose();
MainForm = null;
}
finally
{
// We don't need this any more.
_splashScreen?.Dispose();
_splashScreen = null;
}
}