Merge branch 'master' into jgrpp
# Conflicts: # src/blitter/32bpp_anim.cpp # src/blitter/8bpp_optimized.cpp # src/gfx.cpp # src/gfx_func.h # src/gfxinit.cpp # src/network/core/os_abstraction.cpp # src/spritecache.cppwip-string
Jonathan G Rennison
5 months ago
commit
b72366419b
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// This file is part of OpenTTD.
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// OpenTTD 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, version 2.
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// OpenTTD 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.
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// See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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//
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-1 * 0 0C "Toyland rapid graphics by zephyris (Richard Wheeler)"
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/*
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* This file is part of OpenTTD.
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* OpenTTD 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, version 2.
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* OpenTTD 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.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file palette.cpp Handling of palettes. */
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#include "stdafx.h"
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#include "blitter/base.hpp"
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#include "blitter/factory.hpp"
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#include "fileio_func.h"
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#include "gfx_type.h"
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#include "landscape_type.h"
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#include "palette_func.h"
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#include "settings_type.h"
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#include "thread.h"
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#include "core/mem_func.hpp"
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#include "table/palettes.h"
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#include "safeguards.h"
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Palette _cur_palette;
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std::mutex _cur_palette_mutex;
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byte _colour_gradient[COLOUR_END][8];
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byte _colour_value[COLOUR_END] = {
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133, // COLOUR_DARK_BLUE
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99, // COLOUR_PALE_GREEN,
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48, // COLOUR_PINK,
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68, // COLOUR_YELLOW,
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184, // COLOUR_RED,
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152, // COLOUR_LIGHT_BLUE,
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209, // COLOUR_GREEN,
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95, // COLOUR_DARK_GREEN,
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150, // COLOUR_BLUE,
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79, // COLOUR_CREAM,
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134, // COLOUR_MAUVE,
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174, // COLOUR_PURPLE,
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195, // COLOUR_ORANGE,
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116, // COLOUR_BROWN,
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6, // COLOUR_GREY,
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15, // COLOUR_WHITE,
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};
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Colour _water_palette[10];
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/**
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* PALETTE_BITS reduces the bits-per-channel of 32bpp graphics data to allow faster palette lookups from
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* a smaller lookup table.
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*
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* 6 bpc is chosen as this results in a palette lookup table of 256KiB with adequate fidelty.
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* In constract, a 5 bpc lookup table would be 32KiB, and 7 bpc would be 2MiB.
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*
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* Values in the table are filled as they are first encountered -- larger lookup table means more colour
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* distance calculations, and is therefore slower.
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*/
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const uint PALETTE_BITS = 6;
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const uint PALETTE_SHIFT = 8 - PALETTE_BITS;
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const uint PALETTE_BITS_MASK = ((1U << PALETTE_BITS) - 1) << PALETTE_SHIFT;
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const uint PALETTE_BITS_OR = (1U << (PALETTE_SHIFT - 1));
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/* Palette and reshade lookup table. */
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using PaletteLookup = std::array<uint8_t, 1U << (PALETTE_BITS * 3)>;
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static PaletteLookup _palette_lookup{};
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/**
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* Reduce bits per channel to PALETTE_BITS, and place value in the middle of the reduced range.
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* This is to counteract the information lost between bright and dark pixels, e.g if PALETTE_BITS was 2:
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* 0 - 63 -> 32
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* 64 - 127 -> 96
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* 128 - 191 -> 160
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* 192 - 255 -> 224
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* @param c 8 bit colour component.
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* @returns Colour component reduced to PALETTE_BITS.
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*/
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inline uint CrunchColour(uint c)
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{
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return (c & PALETTE_BITS_MASK) | PALETTE_BITS_OR;
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}
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/**
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* Calculate distance between two colours.
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* @param col1 First colour.
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* @param r2 Red component of second colour.
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* @param g2 Green component of second colour.
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* @param b2 Blue component of second colour.
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* @returns Euclidean distance between first and second colour.
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*/
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static uint CalculateColourDistance(const Colour &col1, int r2, int g2, int b2)
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{
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/* Euclidean colour distance for sRGB based on https://en.wikipedia.org/wiki/Color_difference#sRGB */
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int r = (int)col1.r - (int)r2;
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int g = (int)col1.g - (int)g2;
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int b = (int)col1.b - (int)b2;
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int avgr = (col1.r + r2) / 2;
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return ((2 + (avgr / 256.0)) * r * r) + (4 * g * g) + ((2 + ((255 - avgr) / 256.0)) * b * b);
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}
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/* Palette indexes for conversion. See docs/palettes/palette_key.png */
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const uint8_t PALETTE_INDEX_CC_START = 198; ///< Palette index of start of company colour remap area.
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const uint8_t PALETTE_INDEX_CC_END = PALETTE_INDEX_CC_START + 8; ///< Palette index of end of company colour remap area.
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const uint8_t PALETTE_INDEX_START = 1; ///< Palette index of start of defined palette.
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const uint8_t PALETTE_INDEX_END = 215; ///< Palette index of end of defined palette.
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/**
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* Find nearest colour palette index for a 32bpp pixel.
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* @param r Red component.
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* @param g Green component.
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* @param b Blue component.
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* @returns palette index of nearest colour.
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*/
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static uint8_t FindNearestColourIndex(uint8_t r, uint8_t g, uint8_t b)
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{
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r = CrunchColour(r);
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g = CrunchColour(g);
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b = CrunchColour(b);
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uint best_index = 0;
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uint best_distance = UINT32_MAX;
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for (uint i = PALETTE_INDEX_START; i < PALETTE_INDEX_CC_START; i++) {
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if (uint distance = CalculateColourDistance(_palette.palette[i], r, g, b); distance < best_distance) {
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best_index = i;
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best_distance = distance;
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}
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}
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/* There's a hole in the palette reserved for company colour remaps. */
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for (uint i = PALETTE_INDEX_CC_END; i < PALETTE_INDEX_END; i++) {
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if (uint distance = CalculateColourDistance(_palette.palette[i], r, g, b); distance < best_distance) {
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best_index = i;
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best_distance = distance;
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}
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}
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return best_index;
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}
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/**
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* Get nearest colour palette index from an RGB colour.
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* A search is performed if this colour is not already in the lookup table.
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* @param r Red component.
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* @param g Green component.
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* @param b Blue component.
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* @returns nearest colour palette index.
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*/
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uint8_t GetNearestColourIndex(uint8_t r, uint8_t g, uint8_t b)
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{
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uint32_t key = (r >> PALETTE_SHIFT) | (g >> PALETTE_SHIFT) << PALETTE_BITS | (b >> PALETTE_SHIFT) << (PALETTE_BITS * 2);
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if (_palette_lookup[key] == 0) _palette_lookup[key] = FindNearestColourIndex(r, g, b);
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return _palette_lookup[key];
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}
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void DoPaletteAnimations();
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void GfxInitPalettes()
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{
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MemCpyT<Colour>(_water_palette, (_settings_game.game_creation.landscape == LT_TOYLAND) ? _extra_palette_values.dark_water_toyland : _extra_palette_values.dark_water, 5);
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const Colour *s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? _extra_palette_values.glitter_water_toyland : _extra_palette_values.glitter_water;
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for (int i = 0; i < 5; i++) {
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_water_palette[i + 5] = s[i * 3];
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}
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std::lock_guard<std::mutex> lock_state(_cur_palette_mutex);
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memcpy(&_cur_palette, &_palette, sizeof(_cur_palette));
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DoPaletteAnimations();
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}
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#define EXTR(p, q) (((uint16_t)(palette_animation_counter * (p)) * (q)) >> 16)
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#define EXTR2(p, q) (((uint16_t)(~palette_animation_counter * (p)) * (q)) >> 16)
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void DoPaletteAnimations()
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{
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/* Animation counter for the palette animation. */
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static int palette_animation_counter = 0;
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palette_animation_counter += 8;
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Blitter *blitter = BlitterFactory::GetCurrentBlitter();
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const Colour *s;
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const ExtraPaletteValues *ev = &_extra_palette_values;
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Colour old_val[PALETTE_ANIM_SIZE];
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const uint old_tc = palette_animation_counter;
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uint j;
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if (blitter != nullptr && blitter->UsePaletteAnimation() == Blitter::PALETTE_ANIMATION_NONE) {
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palette_animation_counter = 0;
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||||||
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}
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||||||
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Colour *palette_pos = &_cur_palette.palette[PALETTE_ANIM_START]; // Points to where animations are taking place on the palette
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/* Makes a copy of the current animation palette in old_val,
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* so the work on the current palette could be compared, see if there has been any changes */
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memcpy(old_val, palette_pos, sizeof(old_val));
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/* Fizzy Drink bubbles animation */
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s = ev->fizzy_drink;
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j = EXTR2(512, EPV_CYCLES_FIZZY_DRINK);
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for (uint i = 0; i != EPV_CYCLES_FIZZY_DRINK; i++) {
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*palette_pos++ = s[j];
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j++;
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||||||
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if (j == EPV_CYCLES_FIZZY_DRINK) j = 0;
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}
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||||||
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/* Oil refinery fire animation */
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s = ev->oil_refinery;
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j = EXTR2(512, EPV_CYCLES_OIL_REFINERY);
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for (uint i = 0; i != EPV_CYCLES_OIL_REFINERY; i++) {
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*palette_pos++ = s[j];
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j++;
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if (j == EPV_CYCLES_OIL_REFINERY) j = 0;
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||||||
|
}
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||||||
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/* Radio tower blinking */
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||||||
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{
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||||||
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byte i = (palette_animation_counter >> 1) & 0x7F;
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||||||
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byte v;
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||||||
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||||||
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if (i < 0x3f) {
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||||||
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v = 255;
|
||||||
|
} else if (i < 0x4A || i >= 0x75) {
|
||||||
|
v = 128;
|
||||||
|
} else {
|
||||||
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v = 20;
|
||||||
|
}
|
||||||
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palette_pos->r = v;
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||||||
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palette_pos->g = 0;
|
||||||
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palette_pos->b = 0;
|
||||||
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palette_pos++;
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||||||
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||||||
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i ^= 0x40;
|
||||||
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if (i < 0x3f) {
|
||||||
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v = 255;
|
||||||
|
} else if (i < 0x4A || i >= 0x75) {
|
||||||
|
v = 128;
|
||||||
|
} else {
|
||||||
|
v = 20;
|
||||||
|
}
|
||||||
|
palette_pos->r = v;
|
||||||
|
palette_pos->g = 0;
|
||||||
|
palette_pos->b = 0;
|
||||||
|
palette_pos++;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Handle lighthouse and stadium animation */
|
||||||
|
s = ev->lighthouse;
|
||||||
|
j = EXTR(256, EPV_CYCLES_LIGHTHOUSE);
|
||||||
|
for (uint i = 0; i != EPV_CYCLES_LIGHTHOUSE; i++) {
|
||||||
|
*palette_pos++ = s[j];
|
||||||
|
j++;
|
||||||
|
if (j == EPV_CYCLES_LIGHTHOUSE) j = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Dark blue water */
|
||||||
|
s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->dark_water_toyland : ev->dark_water;
|
||||||
|
j = EXTR(320, EPV_CYCLES_DARK_WATER);
|
||||||
|
for (uint i = 0; i != EPV_CYCLES_DARK_WATER; i++) {
|
||||||
|
*palette_pos++ = s[j];
|
||||||
|
j++;
|
||||||
|
if (j == EPV_CYCLES_DARK_WATER) j = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Glittery water */
|
||||||
|
s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->glitter_water_toyland : ev->glitter_water;
|
||||||
|
j = EXTR(128, EPV_CYCLES_GLITTER_WATER);
|
||||||
|
for (uint i = 0; i != EPV_CYCLES_GLITTER_WATER / 3; i++) {
|
||||||
|
*palette_pos++ = s[j];
|
||||||
|
j += 3;
|
||||||
|
if (j >= EPV_CYCLES_GLITTER_WATER) j -= EPV_CYCLES_GLITTER_WATER;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (blitter != nullptr && blitter->UsePaletteAnimation() == Blitter::PALETTE_ANIMATION_NONE) {
|
||||||
|
palette_animation_counter = old_tc;
|
||||||
|
} else if (_cur_palette.count_dirty == 0 && memcmp(old_val, &_cur_palette.palette[PALETTE_ANIM_START], sizeof(old_val)) != 0) {
|
||||||
|
/* Did we changed anything on the palette? Seems so. Mark it as dirty */
|
||||||
|
_cur_palette.first_dirty = PALETTE_ANIM_START;
|
||||||
|
_cur_palette.count_dirty = PALETTE_ANIM_SIZE;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Determine a contrasty text colour for a coloured background.
|
||||||
|
* @param background Background colour.
|
||||||
|
* @param threshold Background colour brightness threshold below which the background is considered dark and TC_WHITE is returned, range: 0 - 255, default 128.
|
||||||
|
* @return TC_BLACK or TC_WHITE depending on what gives a better contrast.
|
||||||
|
*/
|
||||||
|
TextColour GetContrastColour(uint8_t background, uint8_t threshold)
|
||||||
|
{
|
||||||
|
Colour c = _cur_palette.palette[background];
|
||||||
|
/* Compute brightness according to http://www.w3.org/TR/AERT#color-contrast.
|
||||||
|
* The following formula computes 1000 * brightness^2, with brightness being in range 0 to 255. */
|
||||||
|
uint sq1000_brightness = c.r * c.r * 299 + c.g * c.g * 587 + c.b * c.b * 114;
|
||||||
|
/* Compare with threshold brightness which defaults to 128 (50%) */
|
||||||
|
return sq1000_brightness < ((uint) threshold) * ((uint) threshold) * 1000 ? TC_WHITE : TC_BLACK;
|
||||||
|
}
|
||||||
@ -0,0 +1,84 @@
|
|||||||
|
/*
|
||||||
|
* This file is part of OpenTTD.
|
||||||
|
* OpenTTD 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, version 2.
|
||||||
|
* OpenTTD 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. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/** @file palette_func.h Functions related to palettes. */
|
||||||
|
|
||||||
|
#ifndef PALETTE_FUNC_H
|
||||||
|
#define PALETTE_FUNC_H
|
||||||
|
|
||||||
|
#include "gfx_type.h"
|
||||||
|
|
||||||
|
extern Palette _cur_palette; ///< Current palette
|
||||||
|
|
||||||
|
void GfxInitPalettes();
|
||||||
|
|
||||||
|
uint8_t GetNearestColourIndex(uint8_t r, uint8_t g, uint8_t b);
|
||||||
|
|
||||||
|
static inline uint8_t GetNearestColourIndex(const Colour colour)
|
||||||
|
{
|
||||||
|
return GetNearestColourIndex(colour.r, colour.g, colour.b);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Checks if a Colours value is valid.
|
||||||
|
*
|
||||||
|
* @param colours The value to check
|
||||||
|
* @return true if the given value is a valid Colours.
|
||||||
|
*/
|
||||||
|
static inline bool IsValidColours(Colours colours)
|
||||||
|
{
|
||||||
|
return colours < COLOUR_END;
|
||||||
|
}
|
||||||
|
|
||||||
|
TextColour GetContrastColour(uint8_t background, uint8_t threshold = 128);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* All 16 colour gradients
|
||||||
|
* 8 colours per gradient from darkest (0) to lightest (7)
|
||||||
|
*/
|
||||||
|
extern byte _colour_gradient[COLOUR_END][8];
|
||||||
|
extern byte _colour_value[COLOUR_END];
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Return the colour for a particular greyscale level.
|
||||||
|
* @param level Intensity, 0 = black, 15 = white
|
||||||
|
* @return colour
|
||||||
|
*/
|
||||||
|
#define GREY_SCALE(level) (level)
|
||||||
|
|
||||||
|
static const uint8_t PC_BLACK = GREY_SCALE(1); ///< Black palette colour.
|
||||||
|
static const uint8_t PC_DARK_GREY = GREY_SCALE(6); ///< Dark grey palette colour.
|
||||||
|
static const uint8_t PC_GREY = GREY_SCALE(10); ///< Grey palette colour.
|
||||||
|
static const uint8_t PC_WHITE = GREY_SCALE(15); ///< White palette colour.
|
||||||
|
|
||||||
|
static const uint8_t PC_VERY_DARK_RED = 0xB2; ///< Almost-black red palette colour.
|
||||||
|
static const uint8_t PC_DARK_RED = 0xB4; ///< Dark red palette colour.
|
||||||
|
static const uint8_t PC_RED = 0xB8; ///< Red palette colour.
|
||||||
|
|
||||||
|
static const uint8_t PC_VERY_DARK_BROWN = 0x56; ///< Almost-black brown palette colour.
|
||||||
|
|
||||||
|
static const uint8_t PC_ORANGE = 0xC2; ///< Orange palette colour.
|
||||||
|
|
||||||
|
static const uint8_t PC_YELLOW = 0xBF; ///< Yellow palette colour.
|
||||||
|
static const uint8_t PC_LIGHT_YELLOW = 0x44; ///< Light yellow palette colour.
|
||||||
|
static const uint8_t PC_VERY_LIGHT_YELLOW = 0x45; ///< Almost-white yellow palette colour.
|
||||||
|
|
||||||
|
static const uint8_t PC_GREEN = 0xD0; ///< Green palette colour.
|
||||||
|
|
||||||
|
static const uint8_t PC_VERY_DARK_BLUE = 0x9A; ///< Almost-black blue palette colour.
|
||||||
|
static const uint8_t PC_DARK_BLUE = 0x9D; ///< Dark blue palette colour.
|
||||||
|
static const uint8_t PC_LIGHT_BLUE = 0x98; ///< Light blue palette colour.
|
||||||
|
|
||||||
|
static const uint8_t PC_ROUGH_LAND = 0x52; ///< Dark green palette colour for rough land.
|
||||||
|
static const uint8_t PC_GRASS_LAND = 0x54; ///< Dark green palette colour for grass land.
|
||||||
|
static const uint8_t PC_BARE_LAND = 0x37; ///< Brown palette colour for bare land.
|
||||||
|
static const uint8_t PC_RAINFOREST = 0x5C; ///< Pale green palette colour for rainforest.
|
||||||
|
static const uint8_t PC_FIELDS = 0x25; ///< Light brown palette colour for fields.
|
||||||
|
static const uint8_t PC_TREES = 0x57; ///< Green palette colour for trees.
|
||||||
|
static const uint8_t PC_WATER = 0xC9; ///< Dark blue palette colour for water.
|
||||||
|
|
||||||
|
#endif /* PALETTE_FUNC_H */
|
||||||
Loading…
Reference in New Issue