150 lines
4.5 KiB
C++
150 lines
4.5 KiB
C++
/* Copyright (C) 1996-1997 Id Software, Inc.
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Copyright (C) 2017 Eric Wasylishen
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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See file, 'COPYING', for details.
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*/
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#pragma once
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#include <common/cmdlib.hh>
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#include <common/bspfile.hh>
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#include <common/qvec.hh>
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#include <common/fs.hh>
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namespace img
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{
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enum class ext
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{
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TGA,
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WAL,
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MIP,
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/**
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* Anything loadable by stb_image.h
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*/
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STB
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};
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extern std::vector<qvec3b> palette;
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// Palette
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void init_palette(const gamedef_t *game);
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struct texture_meta
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{
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std::string name;
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uint32_t width = 0, height = 0;
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// extension that we pulled the pixels in from.
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std::optional<ext> extension;
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// so .json metadata can set an emissive color when we don't have
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// texture data. Also useful to override the emissive color
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std::optional<qvec3b> color_override;
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// Q2/WAL only
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surfflags_t flags{};
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uint32_t contents_native = 0;
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int32_t value = 0;
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std::string animation;
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};
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struct texture
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{
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texture_meta meta{};
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// in the case of replacement textures, these may not
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// the width/height of the metadata.
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uint32_t width = 0, height = 0;
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// RGBA order
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std::vector<qvec4b> pixels;
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// the scale required to map a pixel from the
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// meta data onto the real size (16x16 onto 32x32 -> 2)
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float width_scale = 1, height_scale = 1;
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// This member is only set before insertion into the table
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// and not calculated by individual load functions.
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qvec3b averageColor{0};
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};
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extern std::unordered_map<std::string, texture, case_insensitive_hash, case_insensitive_equal> textures;
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// clears the texture cache
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void clear();
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qvec3b calculate_average(const std::vector<qvec4b> &pixels);
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const texture *find(const std::string_view &str);
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// Load wal
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std::optional<texture> load_wal(
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const std::string_view &name, const fs::data &file, bool meta_only, const gamedef_t *game);
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// Load Quake/Half Life mip (raw data)
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std::optional<texture> load_mip(
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const std::string_view &name, const fs::data &file, bool meta_only, const gamedef_t *game);
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// stb_image.h loaders
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std::optional<texture> load_stb(
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const std::string_view &name, const fs::data &file, bool meta_only, const gamedef_t *game);
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// list of supported extensions and their loaders
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struct extension_info_t
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{
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const char *suffix;
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ext id;
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decltype(load_wal) *loader;
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};
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constexpr extension_info_t extension_list[] = {{".png", ext::STB, load_stb}, {".jpg", ext::STB, load_stb}, {".tga", ext::TGA, load_stb},
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{".wal", ext::WAL, load_wal}, {".mip", ext::MIP, load_mip}, {"", ext::MIP, load_mip}};
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// Attempt to load a texture from the specified name.
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std::tuple<std::optional<texture>, fs::resolve_result, fs::data> load_texture(const std::string_view &name,
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bool meta_only, const gamedef_t *game, const settings::common_settings &options, bool no_prefix = false,
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bool mip_only = false);
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enum class meta_ext
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{
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WAL,
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WAL_JSON
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};
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// Load wal
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std::optional<texture_meta> load_wal_meta(const std::string_view &name, const fs::data &file, const gamedef_t *game);
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std::optional<texture_meta> load_wal_json_meta(
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const std::string_view &name, const fs::data &file, const gamedef_t *game);
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// list of supported meta extensions and their loaders
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constexpr struct
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{
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const char *suffix;
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meta_ext id;
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decltype(load_wal_meta) *loader;
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} meta_extension_list[] = {
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{".wal_json", meta_ext::WAL_JSON, load_wal_json_meta}, {".wal", meta_ext::WAL, load_wal_meta}};
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// Attempt to load a texture meta from the specified name.
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std::tuple<std::optional<texture_meta>, fs::resolve_result, fs::data> load_texture_meta(
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const std::string_view &name, const gamedef_t *game, const settings::common_settings &options);
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// Loads textures referenced by the bsp into the texture cache.
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void load_textures(const mbsp_t *bsp, const settings::common_settings &options);
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}; // namespace img
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