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using OpenTK.Graphics.OpenGL;
using Ryujinx.Graphics.GAL;
using System;
namespace Ryujinx.Graphics.OpenGL
{
class Buffer : IBuffer
{
public int Handle { get; }
public Buffer(int size)
{
Handle = GL.GenBuffer();
GL.BindBuffer(BufferTarget.CopyWriteBuffer, Handle);
GL.BufferData(BufferTarget.CopyWriteBuffer, size, IntPtr.Zero, BufferUsageHint.DynamicDraw);
}
public void CopyTo(IBuffer destination, int srcOffset, int dstOffset, int size)
{
GL.BindBuffer(BufferTarget.CopyReadBuffer, Handle);
GL.BindBuffer(BufferTarget.CopyWriteBuffer, ((Buffer)destination).Handle);
GL.CopyBufferSubData(
BufferTarget.CopyReadBuffer,
BufferTarget.CopyWriteBuffer,
(IntPtr)srcOffset,
(IntPtr)dstOffset,
(IntPtr)size);
}
public byte[] GetData(int offset, int size)
{
GL.BindBuffer(BufferTarget.CopyReadBuffer, Handle);
byte[] data = new byte[size];
GL.GetBufferSubData(BufferTarget.CopyReadBuffer, (IntPtr)offset, size, data);
return data;
}
public void SetData(Span<byte> data)
{
unsafe
{
GL.BindBuffer(BufferTarget.CopyWriteBuffer, Handle);
fixed (byte* ptr = data)
{
GL.BufferData(BufferTarget.CopyWriteBuffer, data.Length, (IntPtr)ptr, BufferUsageHint.DynamicDraw);
}
}
}
public void SetData(int offset, Span<byte> data)
{
GL.BindBuffer(BufferTarget.CopyWriteBuffer, Handle);
unsafe
{
fixed (byte* ptr = data)
{
GL.BufferSubData(BufferTarget.CopyWriteBuffer, (IntPtr)offset, data.Length, (IntPtr)ptr);
}
}
}
public void Dispose()
{
GL.DeleteBuffer(Handle);
}
}
}
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