public void Draw(Skeleton skeleton)
{
var drawOrder = skeleton.DrawOrder;
var drawOrderItems = skeleton.DrawOrder.Items;
float skeletonR = skeleton.R, skeletonG = skeleton.G, skeletonB = skeleton.B, skeletonA = skeleton.A;
for (int i = 0, n = drawOrder.Count; i < n; i++)
{
Slot slot = drawOrderItems[i];
RegionAttachment regionAttachment = slot.Attachment as RegionAttachment;
if (regionAttachment != null)
{
BlendState blendState = new BlendState();
Blend blendSrc;
Blend blendDst;
if (premultipliedAlpha)
{
blendState.AlphaBlendFunction = BlendState.AlphaBlend.AlphaBlendFunction;
blendState.BlendFactor = BlendState.AlphaBlend.BlendFactor;
blendState.ColorBlendFunction = BlendState.AlphaBlend.ColorBlendFunction;
blendState.ColorWriteChannels = BlendState.AlphaBlend.ColorWriteChannels;
blendState.ColorWriteChannels1 = BlendState.AlphaBlend.ColorWriteChannels1;
blendState.ColorWriteChannels2 = BlendState.AlphaBlend.ColorWriteChannels2;
blendState.ColorWriteChannels3 = BlendState.AlphaBlend.ColorWriteChannels3;
blendState.MultiSampleMask = BlendState.AlphaBlend.MultiSampleMask;
}
else
{
blendState.AlphaBlendFunction = BlendState.NonPremultiplied.AlphaBlendFunction;
blendState.BlendFactor = BlendState.NonPremultiplied.BlendFactor;
blendState.ColorBlendFunction = BlendState.NonPremultiplied.ColorBlendFunction;
blendState.ColorWriteChannels = BlendState.NonPremultiplied.ColorWriteChannels;
blendState.ColorWriteChannels1 = BlendState.NonPremultiplied.ColorWriteChannels1;
blendState.ColorWriteChannels2 = BlendState.NonPremultiplied.ColorWriteChannels2;
blendState.ColorWriteChannels3 = BlendState.NonPremultiplied.ColorWriteChannels3;
blendState.MultiSampleMask = BlendState.NonPremultiplied.MultiSampleMask;
}
switch (slot.Data.BlendMode)
{
case BlendMode.additive:
blendState = BlendState.Additive;
break;
case BlendMode.multiply:
blendSrc = BlendXna.GetXNABlend(BlendXna.GL_DST_COLOR);
blendDst = BlendXna.GetXNABlend(BlendXna.GL_ONE_MINUS_SRC_ALPHA);
blendState.ColorSourceBlend = blendSrc;
blendState.AlphaSourceBlend = blendSrc;
blendState.ColorDestinationBlend = blendDst;
blendState.AlphaDestinationBlend = blendDst;
break;
case BlendMode.screen:
blendSrc = BlendXna.GetXNABlend(premultipliedAlpha ? BlendXna.GL_ONE : BlendXna.GL_SRC_ALPHA);
blendDst = BlendXna.GetXNABlend(BlendXna.GL_ONE_MINUS_SRC_COLOR);
blendState.ColorSourceBlend = blendSrc;
blendState.AlphaSourceBlend = blendSrc;
blendState.ColorDestinationBlend = blendDst;
blendState.AlphaDestinationBlend = blendDst;
break;
default:
blendState = defaultBlendState;
break;
}
if (device.BlendState != blendState)
{
End();
device.BlendState = blendState;
}
RegionItem item = batcher.NextItem();
AtlasRegion region = (AtlasRegion)regionAttachment.RendererObject;
item.texture = (Texture2D)region.page.rendererObject;
Color color;
float a = skeletonA * slot.A;
if (premultipliedAlpha)
{
color = new Color(skeletonR * slot.R * a, skeletonG * slot.G * a, skeletonB * slot.B * a, a);
}
else
{
color = new Color(skeletonR * slot.R, skeletonG * slot.G, skeletonB * slot.B, a);
}
item.vertexTL.Color = color;
item.vertexBL.Color = color;
item.vertexBR.Color = color;
item.vertexTR.Color = color;
float[] vertices = this.vertices;
regionAttachment.ComputeWorldVertices(slot.Bone, vertices);
item.vertexTL.Position.X = vertices[RegionAttachment.X1];
item.vertexTL.Position.Y = vertices[RegionAttachment.Y1];
item.vertexTL.Position.Z = 0;
item.vertexBL.Position.X = vertices[RegionAttachment.X2];
item.vertexBL.Position.Y = vertices[RegionAttachment.Y2];
item.vertexBL.Position.Z = 0;
item.vertexBR.Position.X = vertices[RegionAttachment.X3];
item.vertexBR.Position.Y = vertices[RegionAttachment.Y3];
item.vertexBR.Position.Z = 0;
item.vertexTR.Position.X = vertices[RegionAttachment.X4];
item.vertexTR.Position.Y = vertices[RegionAttachment.Y4];
item.vertexTR.Position.Z = 0;
float[] uvs = regionAttachment.UVs;
item.vertexTL.TextureCoordinate.X = uvs[RegionAttachment.X1];
item.vertexTL.TextureCoordinate.Y = uvs[RegionAttachment.Y1];
item.vertexBL.TextureCoordinate.X = uvs[RegionAttachment.X2];
item.vertexBL.TextureCoordinate.Y = uvs[RegionAttachment.Y2];
item.vertexBR.TextureCoordinate.X = uvs[RegionAttachment.X3];
item.vertexBR.TextureCoordinate.Y = uvs[RegionAttachment.Y3];
item.vertexTR.TextureCoordinate.X = uvs[RegionAttachment.X4];
item.vertexTR.TextureCoordinate.Y = uvs[RegionAttachment.Y4];
}
}
}
private void Load(TextReader reader, String imagesDir, TextureLoader textureLoader)
{
if (textureLoader == null)
{
throw new ArgumentNullException("textureLoader cannot be null.");
}
this.textureLoader = textureLoader;
String[] tuple = new String[4];
AtlasPage page = null;
while (true)
{
String line = reader.ReadLine();
if (line == null)
{
break;
}
if (line.Trim().Length == 0)
{
page = null;
}
else if (page == null)
{
page = new AtlasPage();
page.name = line;
if (ReadTuple(reader, tuple) == 2) // size is only optional for an atlas packed with an old TexturePacker.
{
page.width = int.Parse(tuple[0]);
page.height = int.Parse(tuple[1]);
ReadTuple(reader, tuple);
}
page.format = (Format)Enum.Parse(typeof(Format), tuple[0], false);
ReadTuple(reader, tuple);
page.minFilter = (TextureFilter)Enum.Parse(typeof(TextureFilter), tuple[0], false);
page.magFilter = (TextureFilter)Enum.Parse(typeof(TextureFilter), tuple[1], false);
String direction = ReadValue(reader);
page.uWrap = TextureWrap.ClampToEdge;
page.vWrap = TextureWrap.ClampToEdge;
if (direction == "x")
{
page.uWrap = TextureWrap.Repeat;
}
else if (direction == "y")
{
page.vWrap = TextureWrap.Repeat;
}
else if (direction == "xy")
{
page.uWrap = page.vWrap = TextureWrap.Repeat;
}
textureLoader.Load(page, Path.Combine(imagesDir, line));
pages.Add(page);
}
else
{
AtlasRegion region = new AtlasRegion();
region.name = line;
region.page = page;
region.rotate = Boolean.Parse(ReadValue(reader));
ReadTuple(reader, tuple);
int x = int.Parse(tuple[0]);
int y = int.Parse(tuple[1]);
ReadTuple(reader, tuple);
int width = int.Parse(tuple[0]);
int height = int.Parse(tuple[1]);
region.u = x / (float)page.width;
region.v = y / (float)page.height;
if (region.rotate)
{
region.u2 = (x + height) / (float)page.width;
region.v2 = (y + width) / (float)page.height;
}
else
{
region.u2 = (x + width) / (float)page.width;
region.v2 = (y + height) / (float)page.height;
}
region.x = x;
region.y = y;
region.width = Math.Abs(width);
region.height = Math.Abs(height);
if (ReadTuple(reader, tuple) == 4) // split is optional
{
region.splits = new int[] { int.Parse(tuple[0]), int.Parse(tuple[1]),
int.Parse(tuple[2]), int.Parse(tuple[3]) };
if (ReadTuple(reader, tuple) == 4) // pad is optional, but only present with splits
{
region.pads = new int[] { int.Parse(tuple[0]), int.Parse(tuple[1]),
int.Parse(tuple[2]), int.Parse(tuple[3]) };
ReadTuple(reader, tuple);
}
}
region.originalWidth = int.Parse(tuple[0]);
region.originalHeight = int.Parse(tuple[1]);
ReadTuple(reader, tuple);
region.offsetX = int.Parse(tuple[0]);
region.offsetY = int.Parse(tuple[1]);
region.index = int.Parse(ReadValue(reader));
regions.Add(region);
}
}
}