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//------------------------------------------------------------------------
//
// Eureka DOOM Editor
//
// Copyright (C) 2022 Ioan Chera
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
//------------------------------------------------------------------------
#include "Palette.hpp"
#include "im_color.h"
#include "w_wad.h"
#include "gtest/gtest.h"
#include <stdint.h>
//
// Uses a common palette generated from 3:3:2 RGB (thus no grays)
//
void makeCommonPalette(Palette &palette)
{
auto wad = Wad_file::Open("dummy.wad", WadOpenMode::write);
EXPECT_TRUE(wad);
Lump_c &lump = wad->AddLump("PALETTE");
// Use 6:8:5 RGB + gray levels
static const uint8_t redLevels[6] = {0, 51, 102, 153, 204, 255};
static const uint8_t greenLevels[8] = {0, 37, 73, 109, 146, 182, 219, 255};
static const uint8_t blueLevels[5] = {0, 64, 128, 192, 255};
for(uint8_t red : redLevels)
for(uint8_t green : greenLevels)
for(uint8_t blue : blueLevels)
{
uint8_t data[3] = {red, green, blue};
lump.Write(data, 3);
}
constexpr int numGrays = 256 - lengthof(redLevels) * lengthof(greenLevels) *
lengthof(blueLevels);
for(int i = 0; i < numGrays; ++i)
{
uint8_t data = (uint8_t)(256 / numGrays * i + 256 / numGrays / 2);
lump.Write(&data, 1);
lump.Write(&data, 1);
lump.Write(&data, 1);
}
EXPECT_TRUE(palette.loadPalette(lump, 2, 2));
}
//
// Produces a vector for a grayscale palette
//
std::vector<uint8_t> makeGrayscale()
{
std::vector<uint8_t> data;
data.reserve(768);
for(int i = 0; i < 256; ++i)
{
// Make a simple f(x) = [x, x, x] data
data.push_back((uint8_t)i);
data.push_back((uint8_t)i);
data.push_back((uint8_t)i);
}
return data;
}
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