private static void GetVertexComponentSize(uint[] sizes, uint[] aligns, uint type, uint count, ref uint biggest, ref uint size)
{
if (sizes[type] != 0)
{
size = MemorySystem.Align(size, aligns[type]);
size += sizes[type] * count;
if (aligns[type] > biggest)
{
biggest = aligns[type];
}
}
}
private static uint DetermineVertexSize(uint vertexType, out uint alignmentDelta)
{
// Kindly yoinked (with permission) from ector's DaSh
uint positionType = (vertexType & VertexType.PositionMask) >> 7;
uint normalType = (vertexType & VertexType.NormalMask) >> 5;
uint textureType = (vertexType & VertexType.TextureMask);
uint weightCount = ((vertexType & VertexType.WeightCountMask) >> 14) + 1;
uint weightType = (vertexType & VertexType.WeightMask) >> 9;
uint colorType = (vertexType & VertexType.ColorMask) >> 2;
uint morphCount = (vertexType & VertexType.MorphCountMask) >> 18;
uint size = 0;
uint biggest = 0;
if (weightType > 0)
{
GetVertexComponentSize(v_weightSizes, v_weightAlign, weightType, weightCount, ref biggest, ref size); // WRONG - count?
}
if (textureType > 0)
{
GetVertexComponentSize(v_textureSizes, v_textureAlign, textureType, 1, ref biggest, ref size);
}
if (colorType > 0)
{
GetVertexComponentSize(v_colorSizes, v_colorAlign, colorType, 1, ref biggest, ref size);
}
if (normalType > 0)
{
GetVertexComponentSize(v_normalSizes, v_normalAlign, normalType, 1, ref biggest, ref size);
}
GetVertexComponentSize(v_positionSizes, v_positionAlign, positionType, 1, ref biggest, ref size);
// do something with morph count?
Debug.Assert(morphCount == 0);
uint result = MemorySystem.Align(size, biggest);
alignmentDelta = result - size;
return(result);
}