godot/thirdparty/pvrtccompressor/PvrTcPacket.h
Rémi Verschelde 819ccdd340 dds/etc1/pbm/pvr: Make those modules and split thirdparty files
They are not particularly packaged in Linux distros so we do not
facilitate unbundling via SCons. There could be done if/when there
is interest.

Also s/pnm/pbm/, long-lived typo :)

(cherry picked from commit b1e8889d96)
2016-10-30 14:51:30 +01:00

66 lines
1.6 KiB
C++

//============================================================================
//
// Modulation data specifies weightings of colorA to colorB for each pixel
//
// For mode = 0
// 00: 0/8
// 01: 3/8
// 10: 5/8
// 11: 8/8
//
// For mode = 1
// 00: 0/8
// 01: 4/8
// 10: 4/8 with alpha punchthrough
// 11: 8/8
//
// For colorIsOpaque=0
// 3 bits A
// 4 bits R
// 4 bits G
// 3/4 bits B
//
// For colorIsOpaque=1
// 5 bits R
// 5 bits G
// 4/5 bits B
//
//============================================================================
#pragma once
#include "ColorRgba.h"
//============================================================================
namespace Javelin
{
//============================================================================
struct PvrTcPacket
{
unsigned int modulationData;
unsigned usePunchthroughAlpha : 1;
unsigned colorA : 14;
unsigned colorAIsOpaque : 1;
unsigned colorB : 15;
unsigned colorBIsOpaque : 1;
ColorRgb<int> GetColorRgbA() const;
ColorRgb<int> GetColorRgbB() const;
ColorRgba<int> GetColorRgbaA() const;
ColorRgba<int> GetColorRgbaB() const;
void SetColorA(const ColorRgb<unsigned char>& c);
void SetColorB(const ColorRgb<unsigned char>& c);
void SetColorA(const ColorRgba<unsigned char>& c);
void SetColorB(const ColorRgba<unsigned char>& c);
static const unsigned char BILINEAR_FACTORS[16][4];
static const unsigned char WEIGHTS[8][4];
};
//============================================================================
} // namespace Javelin
//============================================================================