public void DoRectUpdate(int mipLevel, ClipStackEntry stackEntry, RectangleI srcRegion, RectangleI dstRegion)
{
// get an array of texture data
int elementCount = dstRegion.Width * dstRegion.Height;
uint[] dstData = new uint[elementCount];
uint[] srcData = _textureData[mipLevel];
// make local copies of the rectangle components for quick access
int srcExtentX = srcRegion.Extent.X;
int srcExtentY = srcRegion.Extent.Y;
int srcIndex = srcRegion.Point.X + (srcRegion.Point.Y * (int)stackEntry.ScaleFactor * stackEntry.Texture.Width);
for (int y = 0; y < srcExtentY; y++)
{
Array.Copy(srcData, srcIndex, dstData, y * srcExtentX, srcExtentX);
srcIndex += (int)stackEntry.ScaleFactor * stackEntry.Texture.Width;
}
// send the new data to the stack entry texture
MSXNA.Rectangle dstTextureRect = new MSXNA.Rectangle(dstRegion.X, dstRegion.Y, dstRegion.Width, dstRegion.Height);
// replace the specified rect of texture data on the texture
#if XBOX
stackEntry.Texture.SetData<uint>(0, dstTextureRect, dstData, 0, elementCount, SetDataOptions.None);
#else
stackEntry.Texture.SetData<uint>(0, dstTextureRect, dstData, 0, elementCount, SetDataOptions.Discard);
#endif
}
public void DoRectUpdate(int mipLevel, ClipStackEntry stackEntry, RectangleI srcRegion, RectangleI dstRegion)
{
// toggle updateToggle
_updateToggle = (_updateToggle + 1) % 3;
// find the index to start at
int index = (stackEntry.Texture.Width * dstRegion.Point.Y) + dstRegion.Point.X;
// get an array of texture data
int elementCount = dstRegion.Width * dstRegion.Height;
uint[] dstData = new uint[elementCount];
// make local copies of the rectangle components for quick access
int srcPointX = srcRegion.Point.X;
int srcPointY = srcRegion.Point.Y;
int srcExtentX = srcRegion.Extent.X;
int srcExtentY = srcRegion.Extent.Y;
float scaleFactor = stackEntry.ScaleFactor;
for (int y = 0; y < srcExtentY; y++)
{
for (int x = 0; x < srcExtentX; x++)
{
uint color = 0xFF000000;
int realX = x + srcPointX;
int realY = y + srcPointY;
int xFlag = realX & 4;
int yFlag = realY & 4;
// checker pattern
if ((xFlag ^ yFlag) != 0)
color += 0xFF;
// gradient based on x position across master texture
color += (uint)((float)realX / (float)(512f * scaleFactor) * 255) << 8;
// toggle colors
switch (_updateToggle)
{
case 0:
color += 0xFF0000;
break;
case 1:
color += 0xA00000;
break;
}
//(uint)(_updateToggle ? 0xFF0000 : 0x00);
//color += 0xFF;
dstData[(srcExtentX * y) + x] = color;
}
}
// send the new data to the stack entry texture
Rectangle dstTextureRect = new Rectangle(dstRegion.X, dstRegion.Y, dstRegion.Width, dstRegion.Height);
stackEntry.Texture.SetData<uint>(0, dstTextureRect, dstData, 0, elementCount, SetDataOptions.None);
}
/// <summary>
/// Tests if this rectangle overlaps another rectangle.
/// </summary>
/// <param name="rect">The rectangle to test against.</param>
/// <returns></returns>
public bool Overlaps(RectangleI rect)
{
RectangleI test = new RectangleI(this);
return test.Intersect(rect);
}
/// <summary>
/// Returns whether or not this rectangle intersects with another rectangle.
/// </summary>
/// <param name="rect">The rectangle to test intersections with.</param>
/// <returns>True if the rectangles intersect.</returns>
public bool IntersectsWith(RectangleI rect)
{
if (_point.X + _extent.X < rect._point.X)
return false;
if (_point.Y + _extent.Y < rect._point.Y)
return false;
if (rect._point.X + rect._extent.X < _point.X)
return false;
if (rect._point.Y + rect._extent.Y < _point.Y)
return false;
return true;
}
/// <summary>
/// Set this rectangle to the intersection of it and another rectangle.
/// </summary>
/// <param name="clipRect">The rectangle to intersect with.</param>
/// <returns>Whether or not the resulting rectangle is valid.</returns>
public bool Intersect(RectangleI clipRect)
{
int bottomLX = (int)MathHelper.Min(_point.X + _extent.X, clipRect.X + clipRect.Width);
int bottomLY = (int)MathHelper.Min(_point.Y + _extent.Y, clipRect.Y + clipRect.Height);
_point.X = (int)MathHelper.Max(_point.X, clipRect.X);
_point.Y = (int)MathHelper.Max(_point.Y, clipRect.Y);
_extent.X = bottomLX - _point.X;
_extent.Y = bottomLY - _point.Y;
return IsValid;
}
/// <summary>
/// Returns whether or not this rectangle entirely contains another rectangle.
/// </summary>
/// <param name="rect">The rectangle to test against.</param>
/// <returns>True if the rectangle is entirely contained.</returns>
public bool Contains(RectangleI rect)
{
if (_point.X <= rect.Point.X && _point.Y <= rect.Point.Y)
if (rect.Point.X + rect.Extent.X <= _point.X + _extent.X)
if (rect.Point.Y + rect.Extent.Y <= _point.Y + _extent.Y)
return true;
return false;
}
/// <summary>
/// Creates a rectangle from another rectangle.
/// </summary>
/// <param name="rectangle"></param>
public RectangleI(RectangleI rectangle)
{
_point = rectangle.Point;
_extent = rectangle.Extent;
}
public void DoRectUpdate(int mipLevel, ClipStackEntry stackEntry, RectangleI srcRegion, RectangleI dstRegion)
{
// get a local reference to the GFXDevice's graphics device
GraphicsDevice device = GFXDevice.Instance.Device;
if (device.IsDisposed)
return;
// calculate the new destination texture coordinates
// (custom viewports currently not fully supported on the XBox, so we use this method instead.
// this is just as fast, so probably keep using this.)
RectangleF dstCoords = new RectangleF(
(float)dstRegion.X / (float)stackEntry.Texture.Width,
(float)dstRegion.Y / (float)stackEntry.Texture.Height,
(float)dstRegion.Width / (float)stackEntry.Texture.Width,
(float)dstRegion.Height / (float)stackEntry.Texture.Height
);
// calculate the new texture coordinates
RectangleF texCoords = new RectangleF(
(float)srcRegion.X / ((float)stackEntry.Texture.Width * stackEntry.ScaleFactor),
(float)srcRegion.Y / ((float)stackEntry.Texture.Height * stackEntry.ScaleFactor),
(float)srcRegion.Width / ((float)stackEntry.Texture.Width * stackEntry.ScaleFactor),
(float)srcRegion.Height / ((float)stackEntry.Texture.Height * stackEntry.ScaleFactor)
);
// custom viewports currently bugged on XBOX
_UpdateRenderQuad(texCoords, dstCoords);
// init the effect for this render
_blender.SetupEffect(_toTexRenderState, null);
// draw the quad
while (_blender.SetupPass())
{
try
{
device.DrawUserPrimitives<VertexPositionTexture>(PrimitiveType.TriangleStrip, _renderQuadVB, 0, 2);
}
catch (Exception x)
{
break;
}
}
// cleanup the effect after render
_blender.CleanupEffect();
}
/// <summary>
/// Clips a given rectangle against a source texture and returns a list of rects that the rect will wrap to.
/// </summary>
/// <param name="gridSpacing">The grid over which to wrap the rectangle. Normally _clipMapSize.</param>
/// <param name="rect">The rectangle to wrap around the grid.</param>
/// <returns>The resultant list of rectangles from wrapping the texture to the grid.</returns>
protected void _ClipAgainstGrid(int gridSpacing, RectangleI rect, ref List<RectangleI> rectList)
{
// check against X grids...
int startX = rect.Point.X;
int endX = rect.Point.X + rect.Extent.X;
int gridMask = ~(gridSpacing - 1);
int startGridX = startX & gridMask;
int endGridX = endX & gridMask;
_clipRectBuffer.Clear();
// check X...
if (startGridX != endGridX && endX - endGridX > 0)
{
// we have a clip: split against the grid multiple and store
_clipRectBuffer.Add(new RectangleI(startX, rect.Point.Y, endGridX - startX, rect.Extent.Y));
_clipRectBuffer.Add(new RectangleI(endGridX, rect.Point.Y, endX - endGridX, rect.Extent.Y));
}
else
{
// copy the original rect
_clipRectBuffer.Add(rect);
}
// now, check Y for the one or two rects we have from above.
for (int i = 0; i < _clipRectBuffer.Count; i++)
{
// Figure our extent and grid information.
int startY = _clipRectBuffer[i].Point.Y;
int endY = _clipRectBuffer[i].Point.Y + rect.Extent.Y;
int startGridY = startY & gridMask;
int endGridY = endY & gridMask;
if (startGridY != endGridY && endY - endGridY > 0)
{
// we have a clip: split against the grid multiple and store
rectList.Add(new RectangleI(_clipRectBuffer[i].Point.X, endGridY, _clipRectBuffer[i].Extent.X, endY - endGridY));
rectList.Add(new RectangleI(_clipRectBuffer[i].Point.X, startY, _clipRectBuffer[i].Extent.X, endGridY - startY));
}
else
{
// copy the current rect
rectList.Add(_clipRectBuffer[i]);
}
}
}
/// <summary>
/// Calculate the list of rects that need to be updated when moving a clip level from one source area to another.
/// </summary>
/// <param name="oldData">The area the clip level is moving from.</param>
/// <param name="newData">The area the clip level is moving to.</param>
/// <returns>A list of rectangles that need to be updated.</returns>
protected List<RectangleI> _CalculateModuloDeltaBounds(RectangleI oldData, RectangleI newData)
{
// sanity checking
Assert.Fatal(oldData.Point.X >= 0 && oldData.Point.Y >= 0 && oldData.IsValid, "ClipMap.CalculateModuloDeltaBounds - Negative oldData origin or bad rect.");
Assert.Fatal(newData.Point.X >= 0 && newData.Point.Y >= 0 && newData.IsValid, "ClipMap.CalculateModuloDeltaBounds - Negative newData origin or bad rect.");
Assert.Fatal(newData.Extent == oldData.Extent, "ClipMap.CalculateModuloDeltaBounts - Mismatching extents, can only work with matching extents.");
_updateRectList.Clear();
// easiest case - if they're the same then do nothing
if (oldData.Point == newData.Point)
return _updateRectList;
// easy case - if there's no overlap then it's all new
if (!oldData.Overlaps(newData))
{
// clip out to return buffer, and we're done
_ClipAgainstGrid(_clipMapSize, newData, ref _updateRectList);
return _updateRectList;
}
// calculate some useful values for both X and Y. delta is used a lot
// in determining bounds, and the boundary values are important for
// determining where to start copying new data in.
int xDelta = newData.Point.X - oldData.Point.X;
int yDelta = newData.Point.Y - oldData.Point.Y;
int xBoundary = (oldData.Point.X + oldData.Extent.X) % _clipMapSize;
int yBoundary = (oldData.Point.Y + oldData.Extent.Y) % _clipMapSize;
Assert.Fatal(xBoundary % _clipMapSize == oldData.Point.X % _clipMapSize, "ClipMap.CalculateModuleDeltaBounds - We assume that left and right of the dataset are identical (ie, it's periodical on size of clipmap!) (x)");
Assert.Fatal(yBoundary % _clipMapSize == oldData.Point.Y % _clipMapSize, "ClipMap.CalculateModuleDeltaBounds - We assume that left and right of the dataset are identical (ie, it's periodical on size of clipmap!) (y)");
// now, let's build up our rects. we have one rect if we are moving
// on the X or Y axis, two if both. we dealt with the no-move case
// previously.
if (xDelta == 0)
{
// moving on Y! so generate and store clipped results.
RectangleI yRect = new RectangleI();
if (yDelta < 0)
{
// we need to generate the box from right of old to right of new
yRect.Point = newData.Point;
yRect.Extent = new Point(_clipMapSize, -yDelta);
}
else
{
// we need to generate the box from left of old to left of new
yRect.Point = new Point(newData.Point.X, (oldData.Point.Y + oldData.Extent.Y));
yRect.Extent = new Point(_clipMapSize, yDelta);
}
// clip out to return buffer, and we're done
_ClipAgainstGrid(_clipMapSize, yRect, ref _updateRectList);
return _updateRectList;
}
else if (yDelta == 0)
{
// moving on X! So generate and store clipped results.
RectangleI xRect = new RectangleI();
if (xDelta < 0)
{
// We need to generate the box from right of old to right of new.
xRect.Point = newData.Point;
xRect.Extent = new Point(-xDelta, _clipMapSize);
}
else
{
// we need to generate the box from left of old to left of new.
xRect.Point = new Point((oldData.Point.X + oldData.Extent.X), newData.Point.Y);
xRect.Extent = new Point(xDelta, _clipMapSize);
}
// clip out to return buffer, and we're done
_ClipAgainstGrid(_clipMapSize, xRect, ref _updateRectList);
return _updateRectList;
}
else
{
// Both! We have an L shape. So let's do the bulk of it in one rect,
// and the remainder in the other. We'll choose X as the dominant axis.
//
// a-----b---------c going from e to a.
// | | |
// | | |
// d-----e---------f So the dominant rect is abgh and the passive
// | | | rect is bcef. Obviously depending on delta we
// | | | have to switch things around a bit.
// | | | y+ ^
// | | | |
// g-----h---------i x+-> |
RectangleI xRect = new RectangleI();
RectangleI yRect = new RectangleI();
if (xDelta < 0)
{
// case in the diagram
xRect.Point = newData.Point;
xRect.Extent = new Point(-xDelta, _clipMapSize);
// set up what of yRect we know too
yRect.Point = new Point(xRect.Point.X + xRect.Extent.X, 0);
yRect.Extent = new Point(_clipMapSize + xDelta, 0);
}
else
{
// opposite of case in diagram
xRect.Point = new Point(oldData.Point.X + oldData.Extent.X, newData.Point.Y);
xRect.Extent = new Point(xDelta, _clipMapSize);
// set up what of yRect we know too
yRect.Point = new Point((xRect.Point.X + xRect.Extent.X) - _clipMapSize, 0);
yRect.Extent = new Point(_clipMapSize - xRect.Extent.X, 0);
}
if (yDelta < 0)
{
// case in the diagram.
yRect.Point = new Point(yRect.Point.X, newData.Point.Y);
yRect.Extent = new Point(yRect.Extent.X, -yDelta);
}
else
{
// case in the diagram.
yRect.Point = new Point(yRect.Point.X, oldData.Point.Y + oldData.Extent.Y);
yRect.Extent = new Point(yRect.Extent.X, yDelta);
}
// make sure we don't overlap.
Assert.Fatal(!yRect.Overlaps(xRect), "ClipMap.CalculateModuloDeltaBounds() - overlap in result rects - should not happen!");
// now run them through the clipper and we're done
_ClipAgainstGrid(_clipMapSize, xRect, ref _updateRectList);
_ClipAgainstGrid(_clipMapSize, yRect, ref _updateRectList);
return _updateRectList;
}
}
/// <summary>
/// Updates any neccesary clip levels to be centered on the specified position. If you're using split-screen
/// or any complex post-processing effects use the Center property rather than directly calling this method.
/// That will allow the clip map to recenter during UpdateAnimation rather than immediately update. Otherwise
/// you risk corrupting your render targets on platforms such as XBox that don't support multiple render
/// targets.
/// </summary>
/// <param name="position">The new clip center of the clip map.</param>
public void Recenter(Vector2 position)
{
#if DEBUG
Profiler.Instance.StartBlock("ClipMap.Recenter");
#endif
_center = position;
_needsRecenter = false;
// update our budget texel upload budget
_maxTexelUploadPerRecenter = _clipMapSize * _clipMapSize;
Assert.Fatal((int)TorqueUtil.GetLog2(_clipMapSize) % 1f == 0f, "ClipMap.Recenter - Requires a power of 2 clipmap size.");
// do toroidal updates on each entry of the clipstack
// calculate the new texel at most detailed level.
Vector2 texelCenterF = position * (float)_clipMapSize * _clipLevels[0].ScaleFactor;
Point texelCenter = new Point((int)Math.Floor(texelCenterF.X), (int)Math.Floor(texelCenterF.Y));
// Note how many we were at so we can cut off at the right time.
int lastTexelsUpdated = _texelsUpdated;
// create a list to store desired data in
List<RectangleI> desiredData;
// For each texture...
for (int i = _clipStackDepth - 2; i >= 0; i--)
{
ClipStackEntry stackEntry = _clipLevels[i];
// calculate new center point for this texture
texelCenterF = position * (float)_clipMapSize * stackEntry.ScaleFactor;
int texelMin = _clipMapSize / 2;
int texelMax = (int)((float)(_clipMapSize) * stackEntry.ScaleFactor) - texelMin;
// get the top left corner
Point texelTopLeft = new Point((int)MathHelper.Clamp((int)(Math.Floor(texelCenterF.X)), texelMin, texelMax) - texelMin,
(int)MathHelper.Clamp((int)(Math.Floor(texelCenterF.Y)), texelMin, texelMax) - texelMin);
// prevent very small updates - the RT changes are costly
Point delta = new Point(stackEntry.ToroidalOffset.X - texelTopLeft.X, stackEntry.ToroidalOffset.Y - texelTopLeft.Y);
if (Math.Abs(delta.X) <= _minUpdateDelta && Math.Abs(delta.Y) <= _minUpdateDelta)
continue;
// this + current toroid offset tells us what regions have to be blasted
RectangleI oldData = new RectangleI(stackEntry.ToroidalOffset, new Point(_clipMapSize, _clipMapSize));
RectangleI newData = new RectangleI(texelTopLeft, new Point(_clipMapSize, _clipMapSize));
// get the bounds of the new texture data we want to copy
desiredData = _CalculateModuloDeltaBounds(oldData, newData);
//Console.WriteLine("Level {0}: {1} rects", i, desiredData.Count);
Assert.Fatal(desiredData.Count < 8, "ClipMap.Recenter - Got too many rects back from CalculateModuloDeltaBounds.");
// update the clip stack entry's clip center and toroidal offset
stackEntry.ClipCenter = position;
stackEntry.ToroidalOffset = texelTopLeft;
// update any regions we found
if (desiredData.Count > 0)
{
//jk 9-14 temp, causes crash when enter debug mode //jk
for (int t = 0, c = GFXDevice.Instance.Device.GraphicsDeviceCapabilities.MaxSimultaneousTextures; t < c; t++)
GFXDevice.Instance.Device.Textures[t] = null;
//jk
_imageCache.BeginRectUpdates(i, stackEntry);
// update regions
for (int j = 0; j < desiredData.Count; j++)
{
Assert.Fatal(desiredData[j].IsValid, "ClipMap.Recenter - got an invalid rect.");
// Note the rect, so we can then wrap and let the image cache do its thing.
RectangleI srcRegion = desiredData[j];
desiredData[j] = new RectangleI(new Point(srcRegion.Point.X % _clipMapSize, srcRegion.Point.Y % _clipMapSize), desiredData[j].Extent);
Assert.Fatal(newData.Contains(srcRegion), "ClipMap.Recenter - got update buffer outside of expected new data bounds.");
_totalUpdates++;
_texelsUpdated += srcRegion.Extent.X * srcRegion.Extent.Y;
_imageCache.DoRectUpdate(i, stackEntry, srcRegion, desiredData[j]);
}
_imageCache.FinishRectUpdates(i, stackEntry);
}
// check if we've overrun our budget.
if ((_texelsUpdated - lastTexelsUpdated) > _maxTexelUploadPerRecenter)
{
_needsRecenter = true;
break;
}
}
#if DEBUG
Profiler.Instance.EndBlock("ClipMap.Recenter");
#endif
}
/// <summary>
/// Fills each clip stack entry with texture data. This should be called once the clip stack and image cache have been initialized.
/// </summary>
/// <returns>True if the operation completed successfully.</returns>
public bool FillWithTextureData()
{
// get the interest center
Vector2 texelCenterF;
List<RectangleI> desiredData = new List<RectangleI>();
// first generate our desired rects for each level
for (int i = 0; i < _clipStackDepth; i++)
{
// get this stack entry
ClipStackEntry stackEntry = _clipLevels[i];
// calculate new center point for this texture.
texelCenterF = stackEntry.ClipCenter * (float)_clipMapSize * stackEntry.ScaleFactor;
int texelMin = _clipMapSize / 2;
int texelMax = (int)((float)_clipMapSize * stackEntry.ScaleFactor) - texelMin;
Point texelTopLeft = new Point((int)MathHelper.Clamp((int)(Math.Floor(texelCenterF.Y)), texelMin, texelMax) - texelMin,
(int)MathHelper.Clamp((int)(Math.Floor(texelCenterF.X)), texelMin, texelMax) - texelMin);
desiredData.Add(new RectangleI(texelTopLeft, new Point(_clipMapSize, _clipMapSize)));
}
// upload all the textures...
for (int i = 0; i < _clipStackDepth; i++)
{
ClipStackEntry stackEntry = _clipLevels[i];
_updateRectList.Clear();
_ClipAgainstGrid(_clipMapSize, desiredData[i], ref _updateRectList);
Assert.Fatal(_updateRectList.Count < 8, "ClipMap.FillWithTextureData - Got too many rects back!");
if (_updateRectList.Count > 0)
{
_imageCache.BeginRectUpdates(i, stackEntry);
for (int j = 0; j < _updateRectList.Count; j++)
{
RectangleI srcRegion = _updateRectList[j];
_updateRectList[j] = new RectangleI(new Point(srcRegion.Point.X % _clipMapSize, srcRegion.Point.Y % _clipMapSize), _updateRectList[j].Extent);
_imageCache.DoRectUpdate(i, stackEntry, srcRegion, _updateRectList[j]);
}
_imageCache.FinishRectUpdates(i, stackEntry);
}
stackEntry.ToroidalOffset = desiredData[i].Point;
}
// success!
return true;
}