public int Compare(ref PrimitiveDrawCall <T> x, ref PrimitiveDrawCall <T> y)
{
// FIXME: Tags?
var result = (x.SortKey.Order > y.SortKey.Order)
? 1
: (
(x.SortKey.Order < y.SortKey.Order)
? -1
: 0
);
return(result);
}
public int Compare(PrimitiveDrawCall <T> x, PrimitiveDrawCall <T> y)
{
return(Compare(ref x, ref y));
}
new public void Add(ref PrimitiveDrawCall <T> item)
{
if (item.Vertices == null)
{
return;
}
#if VALIDATE
var indexCount = item.PrimitiveType.ComputeVertexCount(item.PrimitiveCount);
Debug.Assert(
item.Indices.Length >= item.IndexOffset + indexCount
);
for (int i = 0; i < indexCount; i++)
{
Debug.Assert(item.Indices[i + item.IndexOffset] >= 0);
Debug.Assert(item.Indices[i + item.IndexOffset] < item.VertexCount);
}
#endif
var _drawCalls = _DrawCalls.GetBuffer(true);
int count = _DrawCalls.Count;
while (count > 0)
{
PrimitiveDrawCall <T> lastCall = _drawCalls[count - 1];
// Attempt to combine
if (lastCall.PrimitiveType != item.PrimitiveType)
{
break;
}
if ((item.PrimitiveType == PrimitiveType.TriangleStrip) || (item.PrimitiveType == PrimitiveType.LineStrip))
{
break;
}
if (lastCall.Vertices != item.Vertices)
{
break;
}
if (item.VertexOffset != lastCall.VertexOffset + lastCall.VertexCount)
{
break;
}
if ((lastCall.Indices ?? item.Indices) != null)
{
break;
}
_drawCalls[count - 1] = new PrimitiveDrawCall <T>(
lastCall.PrimitiveType, lastCall.Vertices,
lastCall.VertexOffset, lastCall.VertexCount + item.VertexCount,
null, 0,
lastCall.PrimitiveCount + item.PrimitiveCount
);
return;
}
base.Add(ref item);
}
public void Add(PrimitiveDrawCall <T> item)
{
Add(ref item);
}