100 lines
No EOL
3.4 KiB
C++
100 lines
No EOL
3.4 KiB
C++
/*
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Crafter®.Asset
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Copyright (C) 2026 Catcrafts®
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catcrafts.net
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License version 3.0 as published by the Free Software Foundation;
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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module;
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#define STB_IMAGE_IMPLEMENTATION
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#include "../lib/stb_image.h"
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export module Crafter.Asset:Texture;
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import std;
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import Crafter.Math;
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namespace fs = std::filesystem;
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export namespace Crafter {
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enum class OpaqueType : std::uint8_t {
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FullyOpaque, // All pixels have A of 255
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SemiOpaque, // All pixels have A of 0 or 255 (no blending needed)
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Transparent // Color blending is used
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};
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template <typename T>
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struct TextureAsset {
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std::uint16_t sizeX;
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std::uint16_t sizeY;
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OpaqueType opaque;
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std::vector<T> pixels;
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void Save(fs::path path) {
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std::ofstream file(path, std::ios::binary);
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file.write(reinterpret_cast<char*>(&sizeX), sizeof(sizeX));
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file.write(reinterpret_cast<char*>(&sizeY), sizeof(sizeY));
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file.write(reinterpret_cast<char*>(&opaque), sizeof(opaque));
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file.write(reinterpret_cast<char*>(pixels.data()), pixels.size() * sizeof(T));
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}
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static TextureAsset<T> Load(fs::path path) {
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TextureAsset<T> tex;
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std::ifstream file(path, std::ios::binary);
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file.read(reinterpret_cast<char*>(&tex.sizeX), sizeof(tex.sizeX));
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file.read(reinterpret_cast<char*>(&tex.sizeY), sizeof(tex.sizeY));
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file.read(reinterpret_cast<char*>(&tex.opaque), sizeof(tex.opaque));
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tex.pixels.resize(tex.sizeX * tex.sizeY);
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file.read(reinterpret_cast<char*>(tex.pixels.data()), tex.sizeX * tex.sizeY * sizeof(T));
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return tex;
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}
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static TextureAsset<T> LoadPNG(fs::path path) requires (std::same_as<T, Vector<std::uint8_t, 4, 0>>) {
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TextureAsset<T> tex;
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std::filesystem::path abs = std::filesystem::absolute(path);
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int sizeX;
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int sizeY;
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unsigned char* data = stbi_load(abs.string().c_str(), &sizeX, &sizeY, nullptr, 4);
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tex.sizeX = sizeX;
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tex.sizeY = sizeY;
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tex.pixels.resize(tex.sizeX*tex.sizeY);
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std::memcpy(tex.pixels.data(), data, tex.sizeX * tex.sizeY * 4);
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tex.opaque = OpaqueType::FullyOpaque;
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for(std::uint32_t i = 0; i < tex.sizeX* tex.sizeY; i++) {
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if(tex.pixels[i].a != 255) {
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tex.opaque = OpaqueType::SemiOpaque;
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for(std::uint32_t i2 = i; i2 < tex.sizeX* tex.sizeY; i2++) {
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if(tex.pixels[i].a != 0 && tex.pixels[i].a != 255) {
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tex.opaque = OpaqueType::Transparent;
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return tex;
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}
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}
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return tex;
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}
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}
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return tex;
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}
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};
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} |