protected override void OnPaint(PaintEventArgs e)
{
if (device == null)
{
// draw text
StringFormat strFormatting = new StringFormat();
strFormatting.Alignment = StringAlignment.Center;
strFormatting.LineAlignment = StringAlignment.Center;
e.Graphics.DrawString("No preview available", Font, new SolidBrush(ForeColor),
new RectangleF(0, 0, Width, Height), strFormatting);
base.OnPaint(e);
}
else
{
Texture rt = null;
Surface oldRt = null;
Matrix proj = projMat;
if (Monitor.TryEnter(this, 0))
{
while (true)
{
device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, BackColor, 1.0f, 0);
if (status == Status.NoData)
{
device.BeginScene();
// draw text
deviceFont.DrawText(null, "No preview available", new Rectangle(0, 0, Width, Height), DrawTextFormat.Center | DrawTextFormat.VerticalCenter, ForeColor);
device.EndScene();
}
else if (status == Status.Generating)
{
device.BeginScene();
// draw loading text & progress bar
deviceFont.DrawText(null, "Generating preview", new Rectangle(0, 0, Width, Height), DrawTextFormat.Center | DrawTextFormat.VerticalCenter, ForeColor);
device.EndScene();
}
else
{
device.TestCooperativeLevel();
// render preview
pipeline.ProjectionMatrix = proj;
pipeline.ViewMatrix = viewMat;
pipeline.WorldMatrix = Matrix.Identity;
// NOTE: Need to allow SM bypass of lighting??
/*device.Lights[0].Direction = new Vector3(-1, -1, 0);
* device.Lights[0].DiffuseColor = ColorValue.FromColor(Color.White);
* device.Lights[0].Type = LightType.Directional;
* device.Lights[0].Enabled = true;*/
sceneManger.RenderSceneFrame(pipeline, this.Width, this.Height);
}
device.Present();
if (wantPreview && status == Status.Rendering)
{
// do another render into new RT surface
rt = new Texture(device, 128, 128, 1, Usage.RenderTarget, Format.X8R8G8B8, Pool.Default);
oldRt = device.GetRenderTarget(0);
device.SetRenderTarget(0, rt.GetSurfaceLevel(0));
proj = Matrix.PerspectiveFovLH((float)Math.PI / 4.0f, 1f, 1f, 40);
wantPreview = false;
}
else if (oldRt != null)
{
device.SetRenderTarget(0, oldRt);
if (OnNewPreview != null)
{
OnNewPreview(rt, null);
}
break;
}
else
{
break;
}
}
Monitor.Exit(this);
}
}
}
