private void BindBuffer(BindBufferTarget target, uint name)
{
if (!Enum.IsDefined(typeof(BindBufferTarget), target))
{
SetLastError(ErrorCode.InvalidEnum); return;
}
if ((name != 0) && (!this.bufferNameList.Contains(name)))
{
SetLastError(ErrorCode.InvalidValue); return;
}
GLBuffer buffer = null;
if (name != 0)
{
Dictionary <uint, GLBuffer> dict = this.nameBufferDict;
if (dict.TryGetValue(name, out buffer))
{
if (buffer.Target != target)
{
SetLastError(ErrorCode.InvalidOperation); return;
}
}
else // create a new buffer object.
{
buffer = new GLBuffer(target, name);
dict.Add(name, buffer);
}
}
this.currentBufferDict[target] = buffer;
}
internal IntPtr MapBuffer(BindBufferTarget target, MapBufferAccess access)
{
var result = _glMapBuffer(target, access);
CheckForError();
return(result);
}
public BufferObject(BufferObjectTypes type)
: base()
{
this.Type = type;
switch (type)
{
case BufferObjectTypes.Vertex:
_bindTarget = BindBufferTarget.ArrayBuffer;
break;
case BufferObjectTypes.Index:
_bindTarget = BindBufferTarget.ElementArrayBuffer;
break;
case BufferObjectTypes.Uniform:
_bindTarget = BindBufferTarget.UniformBuffer;
break;
case BufferObjectTypes.ShaderStorage:
_bindTarget = BindBufferTarget.ShaderStorageBuffer;
break;
default:
throw new NotSupportedException(type.ToString());
}
Initialize(Context.CreateBuffer());
}
private void BufferData(BindBufferTarget target, int size, IntPtr data, Usage usage)
{
if (!Enum.IsDefined(typeof(BindBufferTarget), target))
{
SetLastError(ErrorCode.InvalidEnum); return;
}
if (!Enum.IsDefined(typeof(Usage), usage))
{
SetLastError(ErrorCode.InvalidEnum); return;
}
if (size < 0)
{
SetLastError(ErrorCode.InvalidValue); return;
}
GLBuffer buffer = this.currentBufferDict[target];
if (buffer == null)
{
SetLastError(ErrorCode.InvalidOperation); return;
}
// TODO: GL_OUT_OF_MEMORY is generated if the GL is unable to create a data store with the specified size.
buffer.SetData(size, data, usage);
}
public GLBuffer(BindBufferTarget target, uint id)
{
this.Target = target;
this.Id = id;
}
public void BindBufferBase(BindBufferTarget bindTarget, uint globalBindingIndex)
{
Context.BindBufferBase(bindTarget, globalBindingIndex, this.Handle);
}
internal void UnmapBuffer(BindBufferTarget target)
{
_glUnmapBuffer(target);
CheckForError();
}
internal void BufferData(BindBufferTarget target, UnsafeBuffer data, BufferUsage usage)
{
_glBufferData(target, data.SizeInBytes, data.Pointer, usage);
CheckForError();
}
internal void BufferData(BindBufferTarget target, int size, IntPtr ptr, BufferUsage usage)
{
_glBufferData(target, size, IntPtr.Zero, usage);
CheckForError();
}
internal void GetBufferSubData(BindBufferTarget target, UnsafeBuffer data)
{
_glGetBufferSubData(target, 0, data.SizeInBytes, data.Pointer);
CheckForError();
}
internal void BufferSubData(BindBufferTarget target, int offset, int size, IntPtr data)
{
_glBufferSubData(target, offset, size, data);
CheckForError();
}
internal void BindBufferBase(BindBufferTarget target, uint index, uint buffer)
{
_glBindBufferBase(target, index, buffer);
CheckForError();
}
internal void BindBufferRange(BindBufferTarget target, uint index, uint bufferObject, uint offset, uint size)
{
_glBindBufferRange(target, index, bufferObject, offset, size);
CheckForError();
}
internal void BindBuffer(BindBufferTarget target, uint handle)
{
_glBindBuffer(target, handle);
CheckForError();
}
