dolphin/Source/Core/VideoCommon/TextureDecoder_Util.h

// Copyright 2016 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later

#pragma once

#include "Common/CommonTypes.h"

struct DXTBlock
{
  u16 color1;
  u16 color2;
  u8 lines[4];
};

constexpr u32 MakeRGBA(int r, int g, int b, int a)
{
  return (a << 24) | (b << 16) | (g << 8) | r;
}

constexpr int DXTBlend(int v1, int v2)
{
  // 3/8 blend, which is close to 1/3
  return ((v1 * 3 + v2 * 5) >> 3);
}