libretro-dolphin/Source/Core/VideoCommon/TextureDecoder_Util.h

26 lines
443 B
C++

// Copyright 2016 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#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);
}