public bool TryRender(VideoUpdatedEventArgs e)
{
AssertUndisposed();
if (!_isBusy.TryAcquire(true)) { return false; }
DataBox dataBox = _context.MapSubresource(_texture, 0, 512 * 512 * 4, MapMode.WriteDiscard, SlimDX.Direct3D11.MapFlags.None);
unsafe
{
ushort* snesBuffer = (ushort*)e.VideoBuffer.DataPointer;
byte* textureBuffer = (byte*)dataBox.Data.DataPointer;
for (int j = 0; j < e.Height; j++)
{
for (int i = 0; i < e.Width; i++)
{
ushort color = *snesBuffer++;
int b;
b = ((color >> 10) & 31) * 8;
*textureBuffer++ = (byte)(b + b / 35);
b = ((color >> 5) & 31) * 8;
*textureBuffer++ = (byte)(b + b / 35);
b = ((color >> 0) & 31) * 8;
*textureBuffer++ = (byte)(b + b / 35);
*textureBuffer++ = 255;
}
textureBuffer += dataBox.RowPitch - e.Width * 4;
snesBuffer += e.Height > 256 ? 512 - e.Width : 1024 - e.Width;
}
}
dataBox.Data.Close();
_context.UnmapSubresource(_texture, 0);
_workerThread.DoWork(new Action(() =>
{
AssertUndisposed();
_context.ClearRenderTargetView(_backBufferView, new Color4(0.0F, 0.0F, 0.0F));
_context.InputAssembler.InputLayout = _layout;
_context.InputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleStrip;
_context.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(_vertices, Marshal.SizeOf(typeof(Vertex)), 0));
_effect.GetVariableByName("TexelRange").AsVector().Set(new Vector2(e.Width / 512.0F, e.Height / 512.0F));
_pass.Apply(_context);
_context.Draw(4, 0);
Present(IsComposited && !IsFullscreen ? 0 : 1, PresentFlags.None);
_isBusy.Value = false;
}));
return true;
}
void Snes_VideoUpdated(object sender, VideoUpdatedEventArgs e)
{
if (_isVideoSynced)
{
_videoDriver.Render(e);
}
else
{
_videoDriver.TryRender(e);
}
}
public void Render(VideoUpdatedEventArgs e)
{
while (!TryRender(e))
{
_isBusy.WaitWhile();
}
}