Ryujinx/Ryujinx.Graphics.OpenGL/Buffer.cs

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using OpenTK.Graphics.OpenGL;
using Ryujinx.Graphics.GAL;
using System;
namespace Ryujinx.Graphics.OpenGL
{
static class Buffer
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{
public static BufferHandle Create()
{
return Handle.FromInt32<BufferHandle>(GL.GenBuffer());
}
public static BufferHandle Create(int size)
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{
int handle = GL.GenBuffer();
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GL.BindBuffer(BufferTarget.CopyWriteBuffer, handle);
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GL.BufferData(BufferTarget.CopyWriteBuffer, size, IntPtr.Zero, BufferUsageHint.DynamicDraw);
return Handle.FromInt32<BufferHandle>(handle);
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}
public static void Copy(BufferHandle source, BufferHandle destination, int srcOffset, int dstOffset, int size)
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{
GL.BindBuffer(BufferTarget.CopyReadBuffer, source.ToInt32());
GL.BindBuffer(BufferTarget.CopyWriteBuffer, destination.ToInt32());
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GL.CopyBufferSubData(
BufferTarget.CopyReadBuffer,
BufferTarget.CopyWriteBuffer,
(IntPtr)srcOffset,
(IntPtr)dstOffset,
(IntPtr)size);
}
public static byte[] GetData(BufferHandle buffer, int offset, int size)
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{
GL.BindBuffer(BufferTarget.CopyReadBuffer, buffer.ToInt32());
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byte[] data = new byte[size];
GL.GetBufferSubData(BufferTarget.CopyReadBuffer, (IntPtr)offset, size, data);
return data;
}
public static void Resize(BufferHandle handle, int size)
{
GL.BindBuffer(BufferTarget.CopyWriteBuffer, handle.ToInt32());
GL.BufferData(BufferTarget.CopyWriteBuffer, size, IntPtr.Zero, BufferUsageHint.StreamCopy);
}
public static void SetData(BufferHandle buffer, int offset, ReadOnlySpan<byte> data)
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{
GL.BindBuffer(BufferTarget.CopyWriteBuffer, buffer.ToInt32());
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unsafe
{
fixed (byte* ptr = data)
{
GL.BufferSubData(BufferTarget.CopyWriteBuffer, (IntPtr)offset, data.Length, (IntPtr)ptr);
}
}
}
public static void Delete(BufferHandle buffer)
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{
GL.DeleteBuffer(buffer.ToInt32());
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}
}
}