public void Init(float[] vertices)
{
GCHandle pinned = GCHandle.Alloc(vertices, GCHandleType.Pinned);
IntPtr header = Marshal.UnsafeAddrOfPinnedArrayElement(vertices, 0);
int length = vertices.Length;
var array = new TempUnmanagedArray <float>(header, length);// It's not necessary to call Dispose() for this unmanaged array.
glGenVertexArrays(1, cubeVAOs);
glGenBuffers(1, cubeVBOs);
// fill buffer
glBindBuffer(GL.GL_ARRAY_BUFFER, cubeVBOs[0]);
glBufferData(GL.GL_ARRAY_BUFFER, array.ByteLength, array.Header, GL.GL_STATIC_DRAW);
// link vertex attributes
glBindVertexArray(cubeVAOs[0]);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL.GL_FLOAT, false, 5 * sizeof(float), IntPtr.Zero);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL.GL_FLOAT, false, 5 * sizeof(float), new IntPtr(3 * sizeof(float)));
glBindBuffer(GL.GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
pinned.Free();
}
public void Init(float[] bufferData, uint[] indices)
{
this.indexCount = indices.Length;
glGenVertexArrays(1, vaos);
// fill buffer
{
GCHandle pinned = GCHandle.Alloc(bufferData, GCHandleType.Pinned);
IntPtr header = Marshal.UnsafeAddrOfPinnedArrayElement(bufferData, 0);
var array = new TempUnmanagedArray <float>(header, bufferData.Length);// It's not necessary to call Dispose() for this unmanaged array.
glGenBuffers(1, vbos);
glBindBuffer(GL.GL_ARRAY_BUFFER, vbos[0]);
glBufferData(GL.GL_ARRAY_BUFFER, array.ByteLength, array.Header, GL.GL_STATIC_DRAW);
pinned.Free();
}
{
GCHandle pinned = GCHandle.Alloc(indices, GCHandleType.Pinned);
IntPtr header = Marshal.UnsafeAddrOfPinnedArrayElement(indices, 0);
var array = new TempUnmanagedArray <uint>(header, indices.Length);// It's not necessary to call Dispose() for this unmanaged array.
glGenBuffers(1, ibos);
glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, ibos[0]);
glBufferData(GL.GL_ELEMENT_ARRAY_BUFFER, array.ByteLength, array.Header, GL.GL_STATIC_DRAW);
pinned.Free();
}
{
int stride = (3 + 2 + 3) * sizeof(float);
// link vertex attributes
glBindVertexArray(vaos[0]);
glBindBuffer(GL.GL_ARRAY_BUFFER, vbos[0]);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL.GL_FLOAT, false, stride, IntPtr.Zero);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL.GL_FLOAT, false, stride, new IntPtr(3 * sizeof(float)));
glEnableVertexAttribArray(1);
glVertexAttribPointer(2, 3, GL.GL_FLOAT, false, stride, new IntPtr(5 * sizeof(float)));
glBindBuffer(GL.GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
}
}
