public void initialize(uint maxNumVertices, uint[] texChannels, ushort[] indices, uint maxNumRenderCalls)
{
{
uint positionsDataSize = (uint)(maxNumVertices * Marshal.SizeOf(typeof(Neutrino._math.vec3)));
positionsId_ = Gl.GenBuffer();
positions_ = new Neutrino._math.vec3[maxNumVertices];
Gl.BindBuffer(BufferTarget.ArrayBuffer, positionsId_);
Gl.BufferData(BufferTarget.ArrayBuffer, (IntPtr)positionsDataSize, IntPtr.Zero, BufferUsageHint.DynamicDraw);
}
{
uint colorsDataSize = (uint)(maxNumVertices * Marshal.SizeOf(typeof(uint)));
colorsId_ = Gl.GenBuffer();
colors_ = new uint[maxNumVertices];
Gl.BindBuffer(BufferTarget.ArrayBuffer, colorsId_);
Gl.BufferData(BufferTarget.ArrayBuffer, (IntPtr)colorsDataSize, IntPtr.Zero, BufferUsageHint.DynamicDraw);
}
texChannels_ = new TexChannel[texChannels.Length];
for (uint texIndex = 0; texIndex < texChannels.Length; ++texIndex)
{
TexChannel texChannel = new TexChannel();
uint texDataSize = (uint)(maxNumVertices * texChannels[texIndex] * Marshal.SizeOf(typeof(float)));
texChannel.dimensions_ = texChannels[texIndex];
texChannel.id_ = Gl.GenBuffer();
texChannel.data_ = new float[maxNumVertices * texChannels[texIndex]];
Gl.BindBuffer(BufferTarget.ArrayBuffer, texChannel.id_);
Gl.BufferData(BufferTarget.ArrayBuffer, (IntPtr)texDataSize, IntPtr.Zero, BufferUsageHint.DynamicDraw);
texChannels_[texIndex] = texChannel;
}
{
uint indicesDataSize = (uint)(indices.Length * Marshal.SizeOf(typeof(ushort)));
indicesId_ = Gl.GenBuffer();
indicesData_ = Marshal.AllocHGlobal((int)indicesDataSize);
{
IntPtr ptr = indicesData_;
for (uint i = 0; i < indices.Length; ptr = IntPtr.Add(ptr, Marshal.SizeOf(typeof(ushort))), ++i)
{
Marshal.WriteInt16(ptr, (short)indices[i]);
}
}
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, indicesId_);
Gl.BufferData(BufferTarget.ElementArrayBuffer, (IntPtr)indicesDataSize, indicesData_, BufferUsageHint.StaticDraw);
}
numVertices_ = 0;
renderCalls_ = new Neutrino.RenderCall[maxNumRenderCalls];
numRenderCalls_ = 0;
}
public void updateGlBuffers()
{
{
GCHandle handle = GCHandle.Alloc(positions_, GCHandleType.Pinned);
IntPtr pointer = handle.AddrOfPinnedObject();
Gl.BindBuffer(BufferTarget.ArrayBuffer, positionsId_);
Gl.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)0, (IntPtr)(numVertices_ * Marshal.SizeOf(typeof(Neutrino._math.vec3))), pointer);
handle.Free();
}
{
GCHandle handle = GCHandle.Alloc(colors_, GCHandleType.Pinned);
IntPtr pointer = handle.AddrOfPinnedObject();
Gl.BindBuffer(BufferTarget.ArrayBuffer, colorsId_);
Gl.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)0, (IntPtr)(numVertices_ * Marshal.SizeOf(typeof(uint))), pointer);
handle.Free();
}
for (uint texIndex = 0; texIndex < texChannels_.Length; ++texIndex)
{
TexChannel texChannel = texChannels_[texIndex];
GCHandle handle = GCHandle.Alloc(texChannel.data_, GCHandleType.Pinned);
IntPtr pointer = handle.AddrOfPinnedObject();
Gl.BindBuffer(BufferTarget.ArrayBuffer, texChannel.id_);
Gl.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)0,
(IntPtr)(numVertices_ * texChannel.dimensions_ * Marshal.SizeOf(typeof(float))), pointer);
handle.Free();
}
}
