///<summary>
/// Convert Axiom PixelBox extent to D3D box
///</summary>
protected static D3D.Box ToD3DBoxExtent(PixelBox lockBox)
{
D3D.Box pbox = new D3D.Box();
pbox.Left = 0;
pbox.Right = lockBox.Width;
pbox.Top = 0;
pbox.Bottom = lockBox.Height;
pbox.Front = 0;
pbox.Back = lockBox.Depth;
return(pbox);
}
///<summary>
/// Convert Axiom Box to D3D box
///</summary>
protected static D3D.Box ToD3DBox(BasicBox lockBox)
{
D3D.Box pbox = new D3D.Box();
pbox.Left = lockBox.Left;
pbox.Right = lockBox.Right;
pbox.Top = lockBox.Top;
pbox.Bottom = lockBox.Bottom;
pbox.Front = lockBox.Front;
pbox.Back = lockBox.Back;
return(pbox);
}
public Array LockBox(Type typeLock, Box box, LockFlags flags, params int[] ranks)
{
throw new NotImplementedException();
}
public GraphicsStream LockBox(Box box, LockFlags flags)
{
throw new NotImplementedException();
}
public GraphicsStream LockBox(Box box, LockFlags flags, out LockedBox lockedVolume)
{
throw new NotImplementedException();
}
///<summary>
/// @copydoc HardwarePixelBuffer.BlitToMemory
///</summary>
public override void BlitToMemory(BasicBox srcBox, PixelBox dst)
{
// Decide on pixel format of temp surface
PixelFormat tmpFormat = format;
if (D3DHelper.ConvertEnum(dst.Format) == D3D.Format.Unknown)
{
tmpFormat = dst.Format;
}
if (surface != null)
{
Debug.Assert(srcBox.Depth == 1 && dst.Depth == 1);
// Create temp texture
D3D.Texture tmp =
new D3D.Texture(device, dst.Width, dst.Height,
1, // 1 mip level ie topmost, generate no mipmaps
0, D3DHelper.ConvertEnum(tmpFormat),
Pool.Scratch);
D3D.Surface subSurface = tmp.GetSurfaceLevel(0);
// Copy texture to this temp surface
Rectangle destRect, srcRect;
srcRect = ToD3DRectangle(srcBox);
destRect = ToD3DRectangleExtent(dst);
SurfaceLoader.FromSurface(subSurface, destRect, surface, srcRect, Filter.None, 0);
// Lock temp surface and copy it to memory
int pitch; // Filled in by D3D
GraphicsStream data = subSurface.LockRectangle(D3D.LockFlags.ReadOnly, out pitch);
// Copy it
PixelBox locked = new PixelBox(dst.Width, dst.Height, dst.Depth, tmpFormat);
FromD3DLock(locked, pitch, data);
PixelUtil.BulkPixelConversion(locked, dst);
subSurface.UnlockRectangle();
// Release temporary surface and texture
subSurface.Dispose();
tmp.Dispose();
}
else
{
// Create temp texture
D3D.VolumeTexture tmp =
new D3D.VolumeTexture(device, dst.Width, dst.Height, dst.Depth,
0, D3D.Usage.None,
D3DHelper.ConvertEnum(tmpFormat),
Pool.Scratch);
D3D.Volume subVolume = tmp.GetVolumeLevel(0);
// Volume
D3D.Box ddestBox = ToD3DBoxExtent(dst);
D3D.Box dsrcBox = ToD3DBox(srcBox);
VolumeLoader.FromVolume(subVolume, ddestBox, volume, dsrcBox, Filter.None, 0);
// Lock temp surface and copy it to memory
D3D.LockedBox lbox; // Filled in by D3D
GraphicsStream data = subVolume.LockBox(LockFlags.ReadOnly, out lbox);
// Copy it
PixelBox locked = new PixelBox(dst.Width, dst.Height, dst.Depth, tmpFormat);
FromD3DLock(locked, lbox, data);
PixelUtil.BulkPixelConversion(locked, dst);
subVolume.UnlockBox();
// Release temporary surface and texture
subVolume.Dispose();
tmp.Dispose();
}
}
protected void BlitFromMemoryImpl(PixelBox src, BasicBox dstBox)
{
// TODO: This currently does way too many copies. We copy
// from src to a converted buffer (if needed), then from
// converted to a byte array, then into the temporary surface,
// and finally from the temporary surface to the real surface.
PixelBox converted = src;
IntPtr bufPtr = IntPtr.Zero;
GCHandle bufGCHandle = new GCHandle();
// convert to pixelbuffer's native format if necessary
if (D3DHelper.ConvertEnum(src.Format) == D3D.Format.Unknown)
{
int bufSize = PixelUtil.GetMemorySize(src.Width, src.Height, src.Depth, format);
byte[] newBuffer = new byte[bufSize];
bufGCHandle = GCHandle.Alloc(newBuffer, GCHandleType.Pinned);
bufPtr = bufGCHandle.AddrOfPinnedObject();
converted = new PixelBox(src.Width, src.Height, src.Depth, format, bufPtr);
PixelUtil.BulkPixelConversion(src, converted);
}
// int formatBytes = PixelUtil.GetNumElemBytes(converted.Format);
Surface tmpSurface = device.CreateOffscreenPlainSurface(converted.Width, converted.Height, D3DHelper.ConvertEnum(converted.Format), Pool.Scratch);
int pitch;
// Ideally I would be using the Array mechanism here, but that doesn't seem to work
GraphicsStream buf = tmpSurface.LockRectangle(LockFlags.NoSystemLock, out pitch);
buf.Position = 0;
unsafe {
int bufSize = PixelUtil.GetMemorySize(converted.Width, converted.Height, converted.Depth, converted.Format);
byte * srcPtr = (byte *)converted.Data.ToPointer();
byte[] ugh = new byte[bufSize];
for (int i = 0; i < bufSize; ++i)
{
ugh[i] = srcPtr[i];
}
buf.Write(ugh);
}
tmpSurface.UnlockRectangle();
buf.Dispose();
//ImageInformation imageInfo = new ImageInformation();
//imageInfo.Format = D3DHelper.ConvertEnum(converted.Format);
//imageInfo.Width = converted.Width;
//imageInfo.Height = converted.Height;
//imageInfo.Depth = converted.Depth;
if (surface != null)
{
// I'm trying to write to surface using the data in converted
Rectangle srcRect = ToD3DRectangleExtent(converted);
Rectangle destRect = ToD3DRectangle(dstBox);
SurfaceLoader.FromSurface(surface, destRect, tmpSurface, srcRect, Filter.None, 0);
}
else
{
D3D.Box srcBox = ToD3DBoxExtent(converted);
D3D.Box destBox = ToD3DBox(dstBox);
Debug.Assert(false, "Volume textures not yet supported");
// VolumeLoader.FromStream(volume, destBox, converted.Data, converted.RowPitch * converted.SlicePitch * formatBytes, srcBox, Filter.None, 0);
VolumeLoader.FromStream(volume, destBox, buf, srcBox, Filter.None, 0);
}
tmpSurface.Dispose();
// If we allocated a buffer for the temporary conversion, free it here
// If I used bufPtr to store my temporary data while I converted
// it, I need to free it here. This invalidates converted.
// My data has already been copied to tmpSurface and then to the
// real surface.
if (bufGCHandle.IsAllocated)
{
bufGCHandle.Free();
}
if (doMipmapGen)
{
GenMipmaps();
}
}
///<summary>
/// Lock a box
///</summary>
public override PixelBox LockImpl(BasicBox lockBox, BufferLocking options)
{
// Check for misuse
if (((int)usage & (int)TextureUsage.RenderTarget) != 0)
{
throw new Exception("DirectX does not allow locking of or directly writing to RenderTargets. Use BlitFromMemory if you need the contents; " +
"in D3D9HardwarePixelBuffer.LockImpl");
}
// Set extents and format
PixelBox rval = new PixelBox(lockBox, format);
// Set locking flags according to options
D3D.LockFlags flags = D3D.LockFlags.None;
switch (options)
{
case BufferLocking.Discard:
// D3D only likes D3D.LockFlags.Discard if you created the texture with D3DUSAGE_DYNAMIC
// debug runtime flags this up, could cause problems on some drivers
if ((usage & BufferUsage.Dynamic) != 0)
{
flags |= D3D.LockFlags.Discard;
}
break;
case BufferLocking.ReadOnly:
flags |= D3D.LockFlags.ReadOnly;
break;
default:
break;
}
if (surface != null)
{
// Surface
GraphicsStream data = null;
int pitch;
if (lockBox.Left == 0 && lockBox.Top == 0 &&
lockBox.Right == width && lockBox.Bottom == height)
{
// Lock whole surface
data = surface.LockRectangle(flags, out pitch);
}
else
{
Rectangle prect = ToD3DRectangle(lockBox); // specify range to lock
data = surface.LockRectangle(prect, flags, out pitch);
}
if (data == null)
{
throw new Exception("Surface locking failed; in D3D9HardwarePixelBuffer.LockImpl");
}
FromD3DLock(rval, pitch, data);
}
else
{
// Volume
D3D.Box pbox = ToD3DBox(lockBox); // specify range to lock
D3D.LockedBox lbox; // Filled in by D3D
GraphicsStream data = volume.LockBox(pbox, flags, out lbox);
FromD3DLock(rval, lbox, data);
}
return(rval);
}
///<summary>
/// Convert Axiom PixelBox extent to D3D box
///</summary>
protected static D3D.Box ToD3DBoxExtent(PixelBox lockBox)
{
D3D.Box pbox = new D3D.Box();
pbox.Left = 0;
pbox.Right = lockBox.Width;
pbox.Top = 0;
pbox.Bottom = lockBox.Height;
pbox.Front = 0;
pbox.Back = lockBox.Depth;
return pbox;
}
///<summary>
/// Convert Axiom Box to D3D box
///</summary>
protected static D3D.Box ToD3DBox(BasicBox lockBox)
{
D3D.Box pbox = new D3D.Box();
pbox.Left = lockBox.Left;
pbox.Right = lockBox.Right;
pbox.Top = lockBox.Top;
pbox.Bottom = lockBox.Bottom;
pbox.Front = lockBox.Front;
pbox.Back = lockBox.Back;
return pbox;
}