internal static void RenderLandentries(this LandEntryRenderBatch geometry, Material material, RenderingBridge renderingBridge)
{
foreach (var g in geometry)
{
foreach (var t in g.Value)
{
BufferMesh m = t.Key;
material.BufferMaterial = m.Material;
material.BufferMaterial = m.Material;
renderingBridge.RenderMesh(m, t.Value);
}
}
}
public abstract void RenderMesh(BufferMesh mesh, List <RenderMatrices> matrices);
private static (AttachHelper.VertexWeights[] vertices, BufferMesh[] polydata) FromWeight(Mesh mesh)
{
List <AttachHelper.VertexWeights> vertices = new();
List <int> offsets = new();
int offset = 0;
foreach (var primitive in mesh.Primitives)
{
// read vertices
primitive.VertexAccessors.TryGetValue("POSITION", out Accessor positions);
primitive.VertexAccessors.TryGetValue("NORMAL", out Accessor normals);
primitive.VertexAccessors.TryGetValue("WEIGHTS_0", out Accessor weights);
primitive.VertexAccessors.TryGetValue("JOINTS_0", out Accessor joints);
var positionArray = positions.AsVector3Array();
var normalArray = normals?.AsVector3Array();
var weightsArray = weights.AsVector4Array();
var jointsArray = joints.AsVector4Array();
int vertCount = positionArray.Count;
for (int i = 0; i < vertCount; i++)
{
// position
var pos = positionArray[i];
// normal (may be null)
var nrm = normalArray?[i] ?? Vector3.UnitY;
var joint = jointsArray[i];
var weight = weightsArray[i];
List <(int, float)> skinning = new();
if (weight.X > 0)
{
skinning.Add(((int)joint.X, weight.X));
}
if (weight.Y > 0)
{
skinning.Add(((int)joint.Y, weight.Y));
}
if (weight.Z > 0)
{
skinning.Add(((int)joint.Z, weight.Z));
}
if (weight.W > 0)
{
skinning.Add(((int)joint.W, weight.W));
}
vertices.Add(new(pos, nrm, skinning.ToArray()));
}
offsets.Add(offset);
offset += positionArray.Count;
}
// first, lets put the poly meshes together
BufferMesh[] polyMeshes = new BufferMesh[mesh.Primitives.Count];
int offsetIndex = 0;
foreach (var primitive in mesh.Primitives)
{
// getting positions again to get corner count
var positions = primitive.VertexAccessors["POSITION"];
// read corners
primitive.VertexAccessors.TryGetValue("TEXCOORD_0", out Accessor uvs);
primitive.VertexAccessors.TryGetValue("COLOR_0", out Accessor colors);
var uvArray = uvs?.AsVector2Array();
var colorArray = colors?.AsColorArray();
BufferCorner[] corners = new BufferCorner[positions.Count];
for (int i = 0; i < corners.Length; i++)
{
Vector2 uv = uvArray?[i] ?? default;
Vector4 col = colorArray?[i] ?? Vector4.UnitW;
corners[i] = new((ushort)i, new(col.X, col.Y, col.Z, col.W), uv);
}
// Read indices
uint[] indices = GetIndices(primitive.IndexAccessor, positions.Count, primitive.DrawPrimitiveType);
ushort vertexReadOffset = (ushort)offsets[offsetIndex];
polyMeshes[offsetIndex] = new(corners, indices, GetMaterial(primitive.Material), vertexReadOffset);
offsetIndex++;
}
return(vertices.ToArray(), polyMeshes);
}