/// <summary>
/// Packs an <see cref="MDXVertex"/> for use with an OpenGL buffer.
/// In effect, it transforms it from Z-up to Y-up.
/// </summary>
/// <param name="vertex">The vertex to repack.</param>
/// <returns>A repacked vertex.</returns>
public static byte[] PackForOpenGL(this MDXVertex vertex)
{
using var ms = new MemoryStream();
using var bw = new BinaryWriter(ms);
bw.WriteVector3(vertex.Position, AxisConfiguration.YUp);
bw.Write(vertex.BoneWeights.ToArray());
bw.Write(vertex.BoneIndices.ToArray());
bw.WriteVector3(vertex.Normal, AxisConfiguration.YUp);
bw.WriteVector2(vertex.UV1);
bw.WriteVector2(vertex.UV2);
return(ms.ToArray());
}
/// <summary>
/// Packs an <see cref="MDXVertex"/> for use with an OpenGL buffer.
/// In effect, it transforms it from Z-up to Y-up.
/// </summary>
/// <param name="vertex">The vertex to repack.</param>
/// <returns>A repacked vertex.</returns>
public static byte[] PackForOpenGL(this MDXVertex vertex)
{
using (MemoryStream ms = new MemoryStream())
using (BinaryWriter bw = new BinaryWriter(ms))
{
bw.WriteVector3(vertex.Position, AxisConfiguration.YUp);
bw.Write(vertex.BoneWeights.ToArray());
bw.Write(vertex.BoneIndices.ToArray());
bw.WriteVector3(vertex.Normal, AxisConfiguration.YUp);
bw.WriteVector2(vertex.UVCoordinatesChannel1);
bw.WriteVector2(vertex.UVCoordinatesChannel2);
return(ms.ToArray());
}
}
/// <summary>
/// Reads an <see cref="MDXVertex"/> from the data stream.
/// </summary>
/// <param name="binaryReader">The reader.</param>
/// <returns>The value.</returns>
public static MDXVertex ReadMDXVertex(this BinaryReader binaryReader)
{
return(new MDXVertex(binaryReader.ReadBytes(MDXVertex.GetSize())));
}
/// <inheritdoc />
public void Initialize()
{
ThrowIfDisposed();
if (this.IsInitialized)
{
return;
}
this.Shader = this.Cache.GetShader(EverlookShader.GameModel) as GameModelShader;
if (this.Shader == null)
{
throw new ShaderNullException(typeof(GameModelShader));
}
this.VertexBuffer = new Buffer <byte>(BufferTarget.ArrayBuffer, BufferUsageHint.StaticDraw)
{
Data = this.Model.Vertices.Select(v => v.PackForOpenGL()).SelectMany(b => b).ToArray()
};
var attributePointers = new[]
{
// Position
new VertexAttributePointer(0, 3, VertexAttribPointerType.Float, MDXVertex.GetSize(), 0),
// Bone weights
new VertexAttributePointer(1, 4, VertexAttribPointerType.UnsignedByte, MDXVertex.GetSize(), 12),
// Bone indexes
new VertexAttributePointer(2, 4, VertexAttribPointerType.UnsignedByte, MDXVertex.GetSize(), 16),
// Normal
new VertexAttributePointer(3, 3, VertexAttribPointerType.Float, MDXVertex.GetSize(), 20),
// UV1
new VertexAttributePointer(4, 2, VertexAttribPointerType.Float, MDXVertex.GetSize(), 32),
// UV2
new VertexAttributePointer(5, 2, VertexAttribPointerType.Float, MDXVertex.GetSize(), 40)
};
this.VertexBuffer.AttachAttributePointers(attributePointers);
this.BoundingBox = new RenderableBoundingBox(this.Model.BoundingBox, this.ActorTransform);
this.BoundingBox.Initialize();
foreach (MDXTexture texture in this.Model.Textures)
{
if (!this.TextureLookup.ContainsKey(texture.Filename))
{
this.TextureLookup.Add
(
texture.Filename,
this.Cache.GetTexture(texture, this.GameContext)
);
}
}
foreach (MDXSkin skin in this.Model.Skins)
{
ushort[] absoluteTriangleVertexIndexes = skin.Triangles.Select(relativeIndex => skin.VertexIndices[relativeIndex]).ToArray();
var skinIndexBuffer = new Buffer <ushort>(BufferTarget.ElementArrayBuffer, BufferUsageHint.StaticDraw)
{
Data = absoluteTriangleVertexIndexes
};
this.SkinIndexArrayBuffers.Add(skin, skinIndexBuffer);
if (this.Model.Version <= WarcraftVersion.Wrath)
{
// In models earlier than Cata, we need to calculate the shader selector value at runtime.
foreach (var renderBatch in skin.RenderBatches)
{
ushort shaderSelector = MDXShaderHelper.GetRuntimeShaderID(renderBatch.ShaderID, renderBatch, this.Model);
renderBatch.ShaderID = shaderSelector;
}
}
}
// Cache the default display info
if (this.CurrentDisplayInfo != null)
{
CacheDisplayInfo(this.CurrentDisplayInfo);
}
this.IsInitialized = true;
}
