public override void InternalLoad()
{
/* find mesh component and load it if needed */
_meshComponent = GameObject.Components.FirstOrDefault(c => c is MeshComponent) as MeshComponent;
if (_meshComponent == null) throw new InvalidOperationException("No mesh component to render");
if (!_meshComponent.IsLoaded) _meshComponent.Load();
/* create buffers to store vertex data */
GL.GenBuffers(4, _bufferIds);
GL.BindBuffer(BufferTarget.ArrayBuffer, _bufferIds[0]);
GL.BufferData(BufferTarget.ArrayBuffer, new IntPtr(_meshComponent.Vertices.Length * (Vector3.SizeInBytes)),
_meshComponent.Vertices.ToArray(), BufferUsage.StaticDraw);
GL.BindBuffer(BufferTarget.ArrayBuffer, _bufferIds[1]);
GL.BufferData(BufferTarget.ArrayBuffer, new IntPtr(_meshComponent.Normals.Length * (Vector3.SizeInBytes)),
_meshComponent.Vertices.ToArray(), BufferUsage.StaticDraw);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, _bufferIds[2]);
GL.BufferData(BufferTarget.ElementArrayBuffer, new IntPtr(_meshComponent.Indices.Length * sizeof(short)),
_meshComponent.Indices.ToArray(), BufferUsage.StaticDraw);
}
public override bool InternalLoad()
{
/* find mesh component and load it if needed */
_meshComponent = GameObject.Components.FirstOrDefault(c => c is MeshComponent) as MeshComponent;
if (_meshComponent == null)
{
return false;
}
if (!_meshComponent.IsLoaded) _meshComponent.Load();
int[] cachedBuffers;
if (!Game.InDesignMode && !string.IsNullOrEmpty(_meshComponent.MeshResourceName) &&
GameObject.Scene.MeshBufferCache.TryGetValue(_meshComponent.MeshResourceName, out cachedBuffers))
{
/* can reuse a rendercomponent + gl buffers */
_bufferIds = cachedBuffers;
_isClone = true;
}
else if (!_isClone)
{
/* create buffers to store vertex data */
GL.GenBuffers(2, _bufferIds);
GLVertex[] glVertices = new GLVertex[_meshComponent.Vertices.Length];
bool hasUV = _meshComponent.UV.Length == _meshComponent.Vertices.Length;
for (int i = 0; i < glVertices.Length; i++)
{
glVertices[i].X = (short)(_meshComponent.Vertices[i].X * _shortFloatFactor);
glVertices[i].Y = (short)(_meshComponent.Vertices[i].Y * _shortFloatFactor);
glVertices[i].Z = (short)(_meshComponent.Vertices[i].Z * _shortFloatFactor);
glVertices[i].NX = (short)(_meshComponent.Normals[i].X * _shortFloatFactor);
glVertices[i].NY = (short)(_meshComponent.Normals[i].Y * _shortFloatFactor);
glVertices[i].NZ = (short)(_meshComponent.Normals[i].Z * _shortFloatFactor);
if (hasUV)
{
glVertices[i].U = (short)(_meshComponent.UV[i].X * _shortFloatFactor);
glVertices[i].V = (short)(_meshComponent.UV[i].Y * _shortFloatFactor);
}
}
unsafe
{
fixed (GLVertex* data = glVertices)
{
GL.BindBuffer(BufferTarget.ArrayBuffer, _bufferIds[0]);
GL.BufferData(BufferTarget.ArrayBuffer, new IntPtr(glVertices.Length * sizeof(GLVertex)),
(IntPtr)data, BufferUsage.StaticDraw);
}
fixed (short* data = _meshComponent.Indices.ToArray())
{
GL.BindBuffer(BufferTarget.ElementArrayBuffer, _bufferIds[1]);
GL.BufferData(BufferTarget.ElementArrayBuffer, new IntPtr(_meshComponent.Indices.Length * sizeof(short)),
(IntPtr)data, BufferUsage.StaticDraw);
}
}
if (!Game.InDesignMode && !string.IsNullOrEmpty(_meshComponent.MeshResourceName))
{
GameObject.Scene.MeshBufferCache.Add(_meshComponent.MeshResourceName, _bufferIds);
}
}
return true;
}
