// TODO: Test this method:
public override void WritePixels(PixelBuffer buffer, Point startPoint)
{
Direct3D.Surface surf = mTexture.Value.GetSurfaceLevel(0);
Rectangle updateRect = new Rectangle(startPoint, buffer.Size);
int pitch;
int pixelPitch = mDisplay.GetPixelPitch(surf.Description.Format);
PixelFormat pixelFormat = mDisplay.GetPixelFormat(surf.Description.Format);
surf.Dispose();
GraphicsStream stm = mTexture.Value.LockRectangle(0, Interop.Convert(updateRect), 0, out pitch);
if (buffer.PixelFormat != pixelFormat)
{
buffer = buffer.ConvertTo(pixelFormat);
}
unsafe
{
for (int i = updateRect.Top; i < updateRect.Bottom; i++)
{
int startIndex = buffer.GetPixelIndex(0, i);
int rowStride = buffer.RowStride;
IntPtr dest = (IntPtr)((byte *)stm.InternalData + i * pitch + updateRect.Left * pixelPitch);
Marshal.Copy(buffer.Data, startIndex, dest, rowStride);
}
}
mTexture.Value.UnlockRectangle(0);
}
public override PixelBuffer ReadPixels(PixelFormat format, Rectangle rect)
{
Direct3D.Surface surf = mTexture.Value.GetSurfaceLevel(0);
rect.X += mSrcRect.X;
rect.Y += mSrcRect.Y;
int stride;
int pixelPitch = mDisplay.GetPixelPitch(surf.Description.Format);
PixelFormat pixelFormat = mDisplay.GetPixelFormat(surf.Description.Format);
if (format == PixelFormat.Any)
{
format = pixelFormat;
}
GraphicsStream stm = surf.LockRectangle(
new Drawing.Rectangle(0, 0, mTextureSize.Width, mTextureSize.Height),
LockFlags.ReadOnly, out stride);
byte[] array = new byte[SurfaceWidth * SurfaceHeight * pixelPitch];
int length = SurfaceWidth * pixelPitch;
int index = 0;
unsafe
{
byte *ptr = (byte *)stm.InternalDataPointer;
for (int i = rect.Top; i < rect.Bottom; i++)
{
// hack if the size requested is too large.
if (i >= mTextureSize.Height)
{
break;
}
//IntPtr ptr = (IntPtr)((int)stm.InternalData + i * stride + rect.Left * pixelPitch);
IntPtr mptr = (IntPtr)(ptr + i * stride + rect.Left * pixelPitch);
Marshal.Copy(mptr, array, index, length);
index += length;
}
}
surf.UnlockRectangle();
surf.Dispose();
return(new PixelBuffer(format, rect.Size, array, pixelFormat));
}
