private void BufferSubData(int target, IntPtr offset, uint size, IntPtr ptr)
{
_boundBuffers.TryGetValue(target, out uint boundBuffer);
var memoryName = $"DataBuffer{target}|{boundBuffer}";
var offsetInt = (int)offset;
// It is assumed that the offset and size are valid per the already allocated buffer.
// Check just in case.
IntPtr wholeBuffer = UnmanagedMemoryAllocator.GetNamedMemory(memoryName, out int allocatedSize);
if (offsetInt + size > allocatedSize)
{
Engine.Log.Error($"Invalid uploading sub data of {boundBuffer} in range {offsetInt}:{size}. Buffer is {allocatedSize} long.", "WebGLInternal");
return;
}
// Update driver copy, in case of mapping. This could potentially be useless as mapping might not be used.
NativeHelpers.MemCopy(ptr, IntPtr.Add(wholeBuffer, offsetInt), (int)size);
var args = new BufferDataArgs
{
Ptr = ptr,
Target = target,
Offset = offsetInt,
Length = size
};
_gl.InvokeUnmarshalled <BufferDataArgs, object>("glBufferSubData", args);
}
private bool UnmapBuffer(int target)
{
_boundBuffers.TryGetValue(target, out uint boundBuffer);
var memoryName = $"DataBuffer{target}|{boundBuffer}";
IntPtr memory = UnmanagedMemoryAllocator.GetNamedMemory(memoryName, out int size);
_bufferMapping.TryGetValue(boundBuffer, out BufferMappingState state);
if (state == null || !state.Mapping)
{
return(true);
}
state.Mapping = false;
state.RangeStart = 0;
state.RangeLength = 0;
//Engine.Log.Info($"Flushing buffer {boundBuffer}");
var args = new BufferDataArgs
{
//Usage = _bufferUsage[boundBuffer],
//SizeWholeBuffer = (uint) bufferSize,
Ptr = memory,
Target = target,
Offset = 0,
Length = (uint)size
};
_gl.InvokeUnmarshalled <BufferDataArgs, object>("glBufferSubData", args);
return(true);
}
private void FlushMappedRange(int target, IntPtr offset, uint length)
{
_boundBuffers.TryGetValue(target, out uint boundBuffer);
var memoryName = $"DataBuffer{target}|{boundBuffer}";
IntPtr ptr = UnmanagedMemoryAllocator.GetNamedMemory(memoryName, out int _);
_bufferMapping.TryGetValue(boundBuffer, out BufferMappingState state);
if (state == null || !state.Mapping)
{
return;
}
int bufferStart = (int)offset + state.RangeStart;
state.Mapping = false;
state.RangeStart = 0;
state.RangeLength = 0;
//Engine.Log.Infoe($"Flushing buffer {boundBuffer} in range {offset}:{length}");
//if (target == (int) BufferTarget.ArrayBuffer)
//{
// var test = new Span<VertexData>((void*)(ptr + (int)offset), (int) length / VertexData.SizeInBytes);
// for (var i = 0; i < test.Length; i++)
// {
// Console.Write(test[i].Vertex + ", ");
// }
// Console.Write("\n");
//}
//else if (target == (int) BufferTarget.ElementArrayBuffer)
//{
// var test = new Span<ushort>((void*)(ptr + (int)offset), (int) length / sizeof(ushort));
// for (var i = 0; i < test.Length; i++)
// {
// Console.Write(test[i] + ", ");
// }
// Console.Write("\n");
//}
var args = new BufferDataArgs
{
//Usage = _bufferUsage[boundBuffer],
//SizeWholeBuffer = (uint) bufferSize,
Ptr = ptr + bufferStart,
Target = target,
Offset = bufferStart,
Length = length
};
_gl.InvokeUnmarshalled <BufferDataArgs, object>("glBufferSubData", args);
}
private void BufferData(int target, uint size, IntPtr ptr, int usage)
{
_boundBuffers.TryGetValue(target, out uint boundBuffer);
var memoryName = $"DataBuffer{target}|{boundBuffer}";
if (ptr == IntPtr.Zero)
{
ptr = UnmanagedMemoryAllocator.MemAllocOrReAllocNamed((int)size, memoryName);
}
else
{
// Pointer passed from outside. Copy its data.
IntPtr allocatedMemory = UnmanagedMemoryAllocator.MemAllocOrReAllocNamed((int)size, memoryName);
NativeHelpers.MemCopy(ptr, allocatedMemory, (int)size);
ptr = allocatedMemory;
}
if (usage != -1)
{
_bufferUsage[boundBuffer] = usage;
}
else
{
usage = _bufferUsage[boundBuffer];
}
var args = new BufferDataArgs
{
Usage = usage,
SizeWholeBuffer = size,
Ptr = ptr,
Target = target,
Offset = 0,
Length = size
};
_gl.InvokeUnmarshalled <BufferDataArgs, object>("glBufferData", args);
}