|
private BufferSubData ( |
||
| target | ||
| offset | ||
| size | ||
| data | void | |
| 리턴 | void | |
//glMapBuffer <<< NOTE: This method is slower, only use if have to
//glUnmapBuffer
public unsafe override void Update(int[] indices, int updateCount)
{
GL.BindBuffer(GL.ELEMENT_ARRAY_BUFFER, indexBuffer);
if (_32BitIndices)
{
fixed(int *indicesPtr = indices)
{
IntPtr bufferSize = new IntPtr(indexByteSize * updateCount);
GL.BufferSubData(GL.ELEMENT_ARRAY_BUFFER, IntPtr.Zero, bufferSize, indicesPtr);
}
}
else
{
var indices16Bit = new short[updateCount];
for (int i = 0; i != updateCount; ++i)
{
indices16Bit[i] = (short)indices[i];
}
fixed(short *indicesPtr = indices16Bit)
{
IntPtr bufferSize = new IntPtr(indexByteSize * updateCount);
GL.BufferSubData(GL.ELEMENT_ARRAY_BUFFER, IntPtr.Zero, bufferSize, indicesPtr);
}
}
#if DEBUG
Video.checkForError();
#endif
}
public unsafe override void Update(float[] vertices, int updateCount)
{
GL.BindBuffer(GL.ARRAY_BUFFER, vertexBuffer);
fixed(float *verticesPtr = vertices)
{
IntPtr bufferSize = new IntPtr(vertexByteSize * updateCount);
GL.BufferSubData(GL.ARRAY_BUFFER, IntPtr.Zero, bufferSize, verticesPtr);
}
#if DEBUG
Video.checkForError();
#endif
}