/// <summary>
///
/// </summary>
public static int GetVertexStride(VertexElement[] elements)
{
Int32 num2 = 0;
for (Int32 i = 0; i < elements.Length; i++)
{
Int32 num3 = elements [i].Offset + GetTypeSize (elements [i].VertexElementFormat);
if (num2 < num3)
{
num2 = num3;
}
}
return num2;
}
/// <summary>
/// checks that an effect supports the given vert decl
/// </summary>
//public static void Validate (IShader effect, VertexDeclaration vertexDeclaration)
//{
// throw new NotImplementedException ();
// }
/// <summary>
///
/// </summary>
public static void Validate(int vertexStride, VertexElement[] elements)
{
if (vertexStride <= 0)
{
throw new ArgumentOutOfRangeException ("vertexStride");
}
if ((vertexStride & 3) != 0)
{
throw new ArgumentException ("VertexElementOffsetNotMultipleFour");
}
var numArray = new Int32[vertexStride];
for (Int32 i = 0; i < vertexStride; i++)
{
numArray [i] = -1;
}
for (Int32 j = 0; j < elements.Length; j++)
{
Int32 offset = elements [j].Offset;
Int32 typeSize = GetTypeSize (elements [j].VertexElementFormat);
if ((elements [j].VertexElementUsage < VertexElementUsage.Position) ||
(elements [j].VertexElementUsage > VertexElementUsage.TessellateFactor))
{
throw new ArgumentException ("FrameworkResources.VertexElementBadUsage");
}
if ((offset < 0) || ((offset + typeSize) > vertexStride))
{
throw new ArgumentException ("FrameworkResources.VertexElementOutsideStride");
}
if ((offset & 3) != 0)
{
throw new ArgumentException ("VertexElementOffsetNotMultipleFour");
}
for (Int32 k = 0; k < j; k++)
{
if ((elements [j].VertexElementUsage == elements [k].VertexElementUsage) &&
(elements [j].UsageIndex == elements [k].UsageIndex))
{
throw new ArgumentException ("DuplicateVertexElement");
}
}
for (Int32 m = offset; m < (offset + typeSize); m++)
{
if (numArray [m] >= 0)
{
throw new ArgumentException ("VertexElementsOverlap");
}
numArray [m] = j;
}
}
}