/// <summary>
/// Handles the Click event of the ButtonImagePath control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
private void ButtonImagePath_Click(object sender, EventArgs e)
{
Cursor.Current = Cursors.WaitCursor;
IGorgonImage image = null;
var png = new GorgonCodecPng();
try
{
if (DialogOpenPng.ShowDialog(this) != DialogResult.OK)
{
return;
}
TextImagePath.Text = DialogOpenPng.FileName;
_sourceTexture?.Texture?.Dispose();
_outputTexture?.Dispose();
_sourceTexture = null;
_outputTexture = null;
image = png.LoadFromFile(DialogOpenPng.FileName);
_sourceTexture = image.ConvertToFormat(BufferFormat.R8G8B8A8_UNorm)
.ToTexture2D(_graphics,
new GorgonTexture2DLoadOptions
{
Name =
Path.GetFileNameWithoutExtension(DialogOpenPng.FileName)
}).GetShaderResourceView();
_outputTexture = new GorgonTexture2D(_graphics,
new GorgonTexture2DInfo(_sourceTexture, "Output")
{
Format = BufferFormat.R8G8B8A8_Typeless,
Binding = TextureBinding.ShaderResource | TextureBinding.ReadWriteView
});
// Get an SRV for the output texture so we can render it later.
_outputView = _outputTexture.GetShaderResourceView(BufferFormat.R8G8B8A8_UNorm);
// Get a UAV for the output.
_outputUav = _outputTexture.GetReadWriteView(BufferFormat.R32_UInt);
// Process the newly loaded texture.
_sobel.Process(_sourceTexture, _outputUav, TrackThickness.Value, TrackThreshold.Value / 100.0f);
TrackThreshold.Enabled = TrackThickness.Enabled = true;
}
catch (Exception ex)
{
GorgonDialogs.ErrorBox(this, ex);
TrackThreshold.Enabled = TrackThickness.Enabled = false;
}
finally
{
image?.Dispose();
Cursor.Current = Cursors.Default;
}
}
/// <summary>
/// Function to process a texture into the output texture.
/// </summary>
/// <param name="texture">The texture to process.</param>
/// <param name="outputTexture">The output texture that will receive the processed texture.</param>
/// <param name="thickness">The thickness of the sobel lines.</param>
/// <param name="threshold">The threshold used to determine an edge.</param>
public void Process(GorgonTexture2DView texture, GorgonTexture2DReadWriteView outputTexture, int thickness, float threshold)
{
if ((texture == null) ||
(outputTexture == null))
{
return;
}
if ((_dispatch == null) || (_dispatch.ShaderResources[0] != texture) || (_dispatch.ReadWriteViews[0].ReadWriteView != outputTexture))
{
_dispatch = _dispatchBuilder.ReadWriteView(new GorgonReadWriteViewBinding(outputTexture))
.ShaderResource(texture)
.Build();
}
_sobelOptions[0] = thickness;
_sobelOptions[1] = threshold;
_sobelData.SetData(_sobelOptions);
// Send 32 threads per group.
_compute.Execute(_dispatch, (int)(texture.Width / 32.0f).FastCeiling(), (int)(texture.Height / 32.0f).FastCeiling(), 1);
}
