public List <VaoAttribute> LoadGLAttributes()
{
var vertexBuffer = ParentModel.Model.VertexBuffers[Shape.VertexBufferIndex];
List <VaoAttribute> attributes = new List <VaoAttribute>();
int offset = 0;
foreach (VertexAttrib att in vertexBuffer.Attributes.Values)
{
if (!ElementCountLookup.ContainsKey(att.Name.Remove(2)))
{
continue;
}
bool assigned = false;
int stride = 0;
var assign = Material.Material.ShaderAssign;
foreach (var matAttribute in assign.AttribAssigns)
{
if (matAttribute.Value == att.Name)
{
//Get the translated attribute that is passed to the fragment shader
//Models can assign the same attribute to multiple uniforms (ie u0 to u1, u2)
string translated = matAttribute.Key;
VaoAttribute vaoAtt = (VaoAttribute)Activator.CreateInstance(VaoAttributeType);
vaoAtt.vertexAttributeName = att.Name;
vaoAtt.name = translated;
vaoAtt.ElementCount = ElementCountLookup[att.Name.Remove(2)];
vaoAtt.Assigned = assigned;
vaoAtt.Offset = offset;
if (att.Name.Contains("_i"))
{
vaoAtt.Type = VertexAttribPointerType.Int;
}
else
{
vaoAtt.Type = VertexAttribPointerType.Float;
}
attributes.Add(vaoAtt);
if (!assigned)
{
stride = vaoAtt.Stride;
assigned = true;
}
}
}
offset += stride;
}
return(attributes);
}
public override void LoadMesh(BfresMeshAsset mesh)
{
int offset = mesh.Attributes.Sum(x => x.Stride);
for (int i = 0; i < 3; i++)
{
if (mesh.Attributes.Any(x => x.name == $"inst{i}"))
{
continue;
}
VaoAttribute vaoAtt = new VaoAttribute();
vaoAtt.vertexAttributeName = $"inst{i}";
vaoAtt.name = $"inst{i}";
vaoAtt.ElementCount = 4;
vaoAtt.Offset = offset;
vaoAtt.Type = VertexAttribPointerType.Float;
mesh.Attributes.Add(vaoAtt);
offset += vaoAtt.Stride;
}
var tangentAttribute = mesh.Attributes.FirstOrDefault(x => x.name == "_t0");
if (tangentAttribute != null)
{
tangentAttribute.name = "tangent";
}
//Tangents need to be assigned manually for some reason.
if (!mesh.Attributes.Any(x => x.name == "tangent"))
{
VaoAttribute vaoAtt = new VaoAttribute();
vaoAtt.vertexAttributeName = $"_t0";
vaoAtt.name = $"tangent";
vaoAtt.ElementCount = 4;
vaoAtt.Offset = offset;
vaoAtt.Type = VertexAttribPointerType.Float;
mesh.Attributes.Add(vaoAtt);
offset += vaoAtt.Stride;
}
mesh.UpdateVertexBuffer();
}
