/// <summary>
/// Handles the KeyUp event of the MainForm control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="KeyEventArgs"/> instance containing the event data.</param>
private static void MainForm_KeyUp(object sender, KeyEventArgs e)
{
if ((e.KeyCode != Keys.Enter) ||
(!e.Alt) ||
(_swap == null))
{
return;
}
if (!_swap.IsWindowed)
{
_swap.ExitFullScreen();
return;
}
IGorgonVideoOutputInfo output = _graphics.VideoAdapter.Outputs[GorgonApplication.MainForm.Handle];
if (output == null)
{
return;
}
// Find an appropriate video mode.
var searchMode = new GorgonVideoMode(GorgonApplication.MainForm.ClientSize.Width,
GorgonApplication.MainForm.ClientSize.Height,
BufferFormat.R8G8B8A8_UNorm);
output.VideoModes.FindNearestVideoMode(output, in searchMode, out GorgonVideoMode nearestMode);
// To enter full screen borderless window mode, call EnterFullScreen with no parameters.
_swap.EnterFullScreen(in nearestMode, output);
}
/// <summary>
/// Function to create the primary graphics interface.
/// </summary>
/// <returns>A new graphics interface, or <b>null</b> if a suitable video device was not found on the system.</returns>
/// <remarks>
/// <para>
/// This method will create a new graphics interface for our application to use. It will select the video device with the most suitable depth buffer available, and if it cannot find a suitable
/// device, it will indicate that by returning <b>null</b>.
/// </para>
/// </remarks>
private static GorgonGraphics CreateGraphicsInterface()
{
GorgonGraphics graphics = null;
BufferFormat[] depthFormats =
{
BufferFormat.D32_Float,
BufferFormat.D32_Float_S8X24_UInt,
BufferFormat.D24_UNorm_S8_UInt,
BufferFormat.D16_UNorm
};
// Find out which devices we have installed in the system.
IReadOnlyList <IGorgonVideoAdapterInfo> deviceList = GorgonGraphics.EnumerateAdapters();
if (deviceList.Count == 0)
{
GorgonDialogs.ErrorBox(_mainForm, "There are no suitable video adapters available in the system. This example is unable to continue and will now exit.");
return(null);
}
int depthFormatIndex = 0;
int selectedDeviceIndex = 0;
IGorgonVideoAdapterInfo selectedDevice = null;
_selectedVideoMode = new GorgonVideoMode(Settings.Default.Resolution.Width, Settings.Default.Resolution.Height, BufferFormat.R8G8B8A8_UNorm);
while (selectedDeviceIndex < deviceList.Count)
{
// Reset back to a 32 bit floating point depth.
_depthFormat = depthFormats[depthFormatIndex++];
// Destroy the previous interface.
graphics?.Dispose();
// Create the main graphics interface.
graphics = new GorgonGraphics(deviceList[selectedDeviceIndex++]);
// Validate depth buffer for this device.
// Odds are good that if this fails, you should probably invest in a better video card. Preferably something created after 2005.
if (!graphics.FormatSupport[_depthFormat].IsDepthBufferFormat)
{
continue;
}
selectedDevice = graphics.VideoAdapter;
break;
}
// If, somehow, we are on a device from the dark ages, then we can't continue.
if (selectedDevice != null)
{
return(graphics);
}
GorgonDialogs.ErrorBox(_mainForm, $"The selected video device ('{deviceList[0].Name}') does not support a 32, 24 or 16 bit depth buffer.");
return(null);
}
/// <summary>
/// Function to initialize the GPU resource objects.
/// </summary>
private static void InitializeGpuResources()
{
_graphics = CreateGraphicsInterface();
// If we couldn't create the graphics interface, then leave.
if (_graphics == null)
{
return;
}
// Create a 1280x800 window with a depth buffer.
// We can modify the resolution in the config file for the application, but like other Gorgon examples, the default is 1280x800.
_swap = new GorgonSwapChain(_graphics,
_mainForm,
new GorgonSwapChainInfo("Main")
{
// Set up for 32 bit RGBA normalized display.
Format = BufferFormat.R8G8B8A8_UNorm,
Width = Settings.Default.Resolution.Width,
Height = Settings.Default.Resolution.Height
});
// Build the depth buffer for our swap chain.
BuildDepthBuffer(_swap.Width, _swap.Height);
if (!Settings.Default.IsWindowed)
{
// Get the output for the main window.
var currentScreen = Screen.FromControl(_mainForm);
IGorgonVideoOutputInfo output = _graphics.VideoAdapter.Outputs[currentScreen.DeviceName];
// If we've asked for full screen mode, then locate the correct video mode and set us up.
_selectedVideoMode = new GorgonVideoMode(Settings.Default.Resolution.Width, Settings.Default.Resolution.Height, BufferFormat.R8G8B8A8_UNorm);
_swap.EnterFullScreen(in _selectedVideoMode, output);
}
// Handle resizing because the projection matrix and depth buffer needs to be updated to reflect the new view size.
_swap.BeforeSwapChainResized += Swap_BeforeResized;
_swap.AfterSwapChainResized += Swap_AfterResized;
// Set the current render target output so we can see something.
_graphics.SetRenderTarget(_swap.RenderTargetView, _depthBuffer);
// Create our shaders.
// Our vertex shader. This is a simple shader, it just processes a vertex by multiplying it against
// the world/view/projection matrix and spits it back out.
_vertexShader = GorgonShaderFactory.Compile <GorgonVertexShader>(_graphics, Resources.Shader, "BoingerVS");
// Our main pixel shader. This is a very simple shader, it just reads a texture and spits it back out. Has no
// diffuse capability.
_pixelShader = GorgonShaderFactory.Compile <GorgonPixelShader>(_graphics, Resources.Shader, "BoingerPS");
// Create the vertex input layout.
// We need to create a layout for our vertex type because the shader won't know how to interpret the data we're sending it otherwise.
// This is why we need a vertex shader before we even create the layout.
_inputLayout = GorgonInputLayout.CreateUsingType <BoingerVertex>(_graphics, _vertexShader);
// Resources are stored as System.Drawing.Bitmap files, so we need to convert into an IGorgonImage so we can upload it to a texture.
// We also will generate mip-map levels for this image so that scaling the texture will look better.
using (IGorgonImage image = Resources.Texture.ToGorgonImage())
{
_texture = image.ToTexture2D(_graphics,
new GorgonTexture2DLoadOptions
{
Usage = ResourceUsage.Immutable,
Name = "Texture"
})
.GetShaderResourceView();
}
// Create our constant buffer.
// Our constant buffers are how we send data to our shaders. This one in particular will be responsible for sending our world/view/projection matrix
// to the vertex shader.
_wvpBuffer = GorgonConstantBufferView.CreateConstantBuffer(_graphics,
new GorgonConstantBufferInfo("WVPBuffer")
{
Usage = ResourceUsage.Dynamic,
SizeInBytes = DX.Matrix.SizeInBytes
});
// This one will hold our material information.
_materialBuffer = GorgonConstantBufferView.CreateConstantBuffer(_graphics,
new GorgonConstantBufferInfo("MaterialBuffer")
{
Usage = ResourceUsage.Dynamic,
SizeInBytes = Unsafe.SizeOf <GorgonColor>()
});
GorgonColor defaultMaterialColor = GorgonColor.White;
_materialBuffer.Buffer.SetData(ref defaultMaterialColor);
GorgonExample.LoadResources(_graphics);
}
/// <summary>
/// Handles the KeyDown event of the _form control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="KeyEventArgs"/> instance containing the event data.</param>
private static void Form_KeyDown(object sender, KeyEventArgs e)
{
int ballIncrement = 1;
switch (e.KeyCode)
{
case Keys.Pause:
_paused = !_paused;
break;
case Keys.F1:
_showHelp = !_showHelp;
break;
case Keys.Up:
if ((e.Control) && (e.Shift))
{
ballIncrement = 1000;
}
else
{
if (e.Control)
{
ballIncrement = 100;
}
if (e.Shift)
{
ballIncrement = 10;
}
}
GenerateBalls(ballIncrement);
break;
case Keys.Down:
if ((e.Control) && (e.Shift))
{
ballIncrement = 1000;
}
else
{
if (e.Control)
{
ballIncrement = 100;
}
if (e.Shift)
{
ballIncrement = 10;
}
}
GenerateBalls(-ballIncrement);
break;
case Keys.Enter:
if (e.Alt)
{
if (_mainScreen.IsWindowed)
{
IGorgonVideoOutputInfo output = _graphics.VideoAdapter.Outputs[_window.Handle];
if (output == null)
{
_mainScreen.EnterFullScreen();
}
else
{
var mode = new GorgonVideoMode(_window.ClientSize.Width, _window.ClientSize.Height, BufferFormat.R8G8B8A8_UNorm);
_mainScreen.EnterFullScreen(in mode, output);
}
}
else
{
_mainScreen.ExitFullScreen();
}
}
break;
case Keys.OemMinus:
_blur.BlurRadius--;
if (_blur.BlurRadius < 0)
{
_blur.BlurRadius = 0;
}
break;
case Keys.Oemplus:
_blur.BlurRadius++;
if (_blur.BlurRadius > _blur.MaximumBlurRadius)
{
_blur.BlurRadius = _blur.MaximumBlurRadius;
}
break;
}
}