public SdkMeshVertexBuffer(BinaryReader reader) {
NumVertices = reader.ReadUInt64();
SizeBytes = reader.ReadUInt64();
StrideBytes = reader.ReadUInt64();
Decl = new List<VertexElement>();
var processElem = true;
for (int j = 0; j < MaxVertexElements; j++) {
var stream = reader.ReadUInt16();
var offset = reader.ReadUInt16();
var type = reader.ReadByte();
var method = reader.ReadByte();
var usage = reader.ReadByte();
var usageIndex = reader.ReadByte();
if (stream < 16 && processElem) {
var element = new VertexElement((short)stream, (short)offset, (DeclarationType)type, (DeclarationMethod)method, (DeclarationUsage)usage, usageIndex);
Decl.Add(element);
} else {
processElem = false;
}
}
DataOffset = reader.ReadUInt64();
Vertices = new List<VertPosNormTexTan>();
if (SizeBytes > 0) {
ReadVertices(reader);
}
}
public static int CalculateVertexStride(VertexElement[] elements)
{
int stride = 0;
for (int i = 0; i < elements.Length; i++)
stride = Math.Max(stride, elements[i].Offset + VertexElementAttribute.SizeOfFormatType(elements[i].Type));
return stride;
}
public static bool IsEqual(this VertexElement a, VertexElement b)
{
return (a.Method == b.Method &&
a.Offset == b.Offset &&
a.Stream == b.Stream &&
a.Type == b.Type &&
a.Usage == b.Usage &&
a.UsageIndex == b.UsageIndex);
}
/// <summary>
/// Converts a declarator from a flexible vertex format (FVF) code.
/// </summary>
/// <param name="fvf">Combination of <see cref="VertexFormat"/> that describes the FVF from which to generate the returned declarator array..</param>
/// <returns>
/// A declarator from a flexible vertex format (FVF) code.
/// </returns>
/// <unmanaged>HRESULT D3DXDeclaratorFromFVF([In] D3DFVF FVF,[In, Buffer] D3DVERTEXELEMENT9* pDeclarator)</unmanaged>
public static VertexElement[] DeclaratorFromFVF(VertexFormat fvf)
{
var vertices = new VertexElement[(int)VertexFormatDeclaratorCount.Max];
var result = D3DX9.DeclaratorFromFVF(fvf, vertices);
if (result.Failure)
return null;
var copy = new VertexElement[D3DX9.GetDeclLength(vertices) + 1];
Array.Copy(vertices, copy, copy.Length);
copy[copy.Length - 1] = VertexElement.VertexDeclarationEnd;
return copy;
}
public static D3D9.VertexDeclaration Generate(DECLChunk declChunk, DX dx)
{
D3D9.VertexElement[] vertexElements = new D3D9.VertexElement[declChunk.Declarations.Count + 1];
for (int i = 0; i < declChunk.Declarations.Count; i++)
{
var declElem = declChunk.Declarations[i];
D3D9.VertexElement element = new D3D9.VertexElement(0, declElem.Offset, (D3D9.DeclarationType)declElem.Type,
(D3D9.DeclarationMethod)declElem.Method, (D3D9.DeclarationUsage)declElem.Usage, declElem.UsageIndex);
vertexElements[i] = element;
}
vertexElements[vertexElements.Length - 1] = D3D9.VertexElement.VertexDeclarationEnd;
lock (dx.GlobalLock)
{
D3D9.VertexDeclaration vertexDecl = new D3D9.VertexDeclaration(dx.Device, vertexElements);
return(vertexDecl);
}
}
public static bool ExtractUsage(VertexElement[] elements, DeclarationUsage usage, int index, out DeclarationType format, out int offset)
{
format = (DeclarationType)0;
offset = 0;
for (int i = 0; i < elements.Length; i++)
{
if (elements[i].Usage == usage &&
elements[i].UsageIndex == index)
{
format = elements[i].Type;
offset = elements[i].Offset;
return true;
}
}
return false;
}
/// <summary>
/// Gets the size of a vertex from the vertex declaration.
/// </summary>
/// <param name="elements">The elements.</param>
/// <param name="stream">The stream.</param>
/// <returns>The vertex declaration size, in bytes.</returns>
/// <unmanaged>unsigned int D3DXGetDeclVertexSize([In, Buffer] const D3DVERTEXELEMENT9* pDecl,[In] unsigned int Stream)</unmanaged>
public static int GetDeclarationVertexSize(VertexElement[] elements, int stream)
{
return D3DX9.GetDeclVertexSize(elements, stream);
}
/// <summary>
/// Gets the number of elements in the vertex declaration.
/// </summary>
/// <param name="declaration">The declaration.</param>
/// <returns>The number of elements in the vertex declaration.</returns>
/// <unmanaged>unsigned int D3DXGetDeclLength([In, Buffer] const D3DVERTEXELEMENT9* pDecl)</unmanaged>
public static int GetDeclarationLength(VertexElement[] declaration)
{
return D3DX9.GetDeclLength(declaration);
}
/// <summary>
/// Generates an output vertex declaration from the input declaration. The output declaration is intended for use by the mesh tessellation functions.
/// </summary>
/// <param name="declaration">The input declaration.</param>
/// <returns>The output declaration</returns>
/// <unmanaged>HRESULT D3DXGenerateOutputDecl([In, Buffer] D3DVERTEXELEMENT9* pOutput,[In, Buffer] const D3DVERTEXELEMENT9* pInput)</unmanaged>
public static VertexElement[] GenerateOutputDeclaration(VertexElement[] declaration)
{
var vertices = new VertexElement[(int)VertexFormatDeclaratorCount.Max];
var result = D3DX9.GenerateOutputDecl(vertices, declaration);
if (result.Failure)
return null;
var copy = new VertexElement[D3DX9.GetDeclLength(vertices) + 1];
Array.Copy(vertices, copy, copy.Length);
copy[copy.Length - 1] = VertexElement.VertexDeclarationEnd;
return copy;
}
/// <summary>
/// Converts a flexible vertex format (FVF) code from a declarator.
/// </summary>
/// <param name="declarator">The declarator array.</param>
/// <returns>A <see cref="VertexFormat"/> that describes the vertex format returned from the declarator.</returns>
/// <unmanaged>HRESULT D3DXFVFFromDeclarator([In, Buffer] const D3DVERTEXELEMENT9* pDeclarator,[Out] D3DFVF* pFVF)</unmanaged>
public static VertexFormat FVFFromDeclarator(VertexElement[] declarator)
{
return D3DX9.FVFFromDeclarator(declarator);
}
/// <summary>
/// Create a vertex shader declaration from the device and the vertex elements.
/// </summary>
/// <remarks>
/// See the {{Vertex Declaration (Direct3D 9)}} page for a detailed description of how to map vertex declarations between different versions of DirectX.
/// </remarks>
/// <param name="elements"> An array of <see cref="SharpDX.Direct3D9.VertexElement"/> vertex elements. </param>
/// <returns><see cref="VertexDeclaration"/> If the method succeeds</returns>
/// <unmanaged>HRESULT IDirect3DDevice9::CreateVertexDeclaration([In, Buffer] const D3DVERTEXELEMENT9* pVertexElements,[None] IDirect3DVertexDeclaration9** ppDecl)</unmanaged>
public VertexDeclaration(Device device, VertexElement[] elements)
{
device.CreateVertexDeclaration(elements, this);
}
protected void FillBuffers()
{
DataStream stream, streamIndex;
if (!thickLines)
{
stream = vertexBuffer.Lock(0, 0, LockFlags.None);
stream.WriteRange(vertices);
vertexBuffer.Unlock();
graphicsDevice.VertexFormat = VertexFormat.Position | VertexFormat.Diffuse;
}
else
{
stream = vertexBuffer.Lock(0, 0, LockFlags.None);
stream.WriteRange(thickVertices);
vertexBuffer.Unlock();
VertexElement[] velements = new VertexElement[]
{
new VertexElement(0, 0, DeclarationType.Float3, DeclarationMethod.Default, DeclarationUsage.Position, 0),
new VertexElement(0, 12, DeclarationType.Float3, DeclarationMethod.Default, DeclarationUsage.TextureCoordinate, 0),
new VertexElement(0, 24, DeclarationType.Float2, DeclarationMethod.Default, DeclarationUsage.TextureCoordinate, 1),
new VertexElement(0, 32, DeclarationType.Color, DeclarationMethod.Default, DeclarationUsage.Color, 0),
VertexElement.VertexDeclarationEnd,
};
vertexDeclaration = new VertexDeclaration(graphicsDevice, velements);
}
streamIndex = indexBuffer.Lock(0, 0, LockFlags.None);
streamIndex.WriteRange(indices);
indexBuffer.Unlock();
}
