public PixelBufferGL3x(
BufferTarget type,
BufferHint usageHint,
int sizeInBytes)
{
if (sizeInBytes <= 0)
{
throw new ArgumentOutOfRangeException("sizeInBytes", "sizeInBytes must be greater than zero.");
}
_name = new BufferNameGL3x();
_sizeInBytes = sizeInBytes;
_type = type;
_usageHint = TypeConverterGL3x.To(usageHint);
//
// Allocating here with GL.BufferData, then writing with GL.BufferSubData
// in CopyFromSystemMemory() should not have any serious overhead:
//
// http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=267373#Post267373
//
// Alternately, we can delay GL.BufferData until the first
// CopyFromSystemMemory() call.
//
Bind();
GL.BufferData(_type, new IntPtr(sizeInBytes), new IntPtr(), _usageHint);
GC.AddMemoryPressure(sizeInBytes);
}
public override void Bind(UniformBuffer uniformBuffer)
{
BufferNameGL3x bufferHandle = ((UniformBufferGL3x)uniformBuffer).Handle;
GL.BindBufferBase(BufferTarget.UniformBuffer, _bindHandle, bufferHandle.Value);
}
