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decompiler: add texture merging feature (#3083)

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This commit is contained in:
Tyler Wilding
2023-10-12 17:02:36 -06:00
committed by GitHub
parent 598ba1aaa3
commit 60eaac8051
4 changed files with 47 additions and 0 deletions
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decompiler/data/TextureDB.cpp
+30
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@@ -99,6 +99,36 @@ void TextureDB::add_index_texture(u32 tpage,
}
}
void TextureDB::merge_textures(const fs::path& base_path) {
for (auto& tex : textures) {
fs::path full_path = base_path / tpage_names.at(tex.second.page) / (tex.second.name + ".png");
if (fs::exists(full_path)) {
lg::info("Merging {}", full_path.string().c_str());
int w, h;
auto merge_data = stbi_load(full_path.string().c_str(), &w, &h, 0, 4); // rgba channels
if (!merge_data) {
lg::warn("failed to load PNG file: {}", full_path.string().c_str());
continue;
} else if (w != tex.second.w || h != tex.second.h) {
lg::warn("merge texture does not match the same dimensions: {}, {} != {} || {} != {}",
full_path.string().c_str(), w, tex.second.w, h, tex.second.h);
stbi_image_free(merge_data);
continue;
}
// Merge any non-transparent pixels into the existing texture
for (int i = 0; i < w * h * 4; i += 4) {
const auto merge_pixel_a = merge_data[i + 3];
if (merge_pixel_a != 0) {
u32 merge_pixel;
memcpy(&merge_pixel, &merge_data[i], sizeof(u32));
tex.second.rgba_bytes.at(i / 4) = merge_pixel;
}
}
stbi_image_free(merge_data);
}
}
}
void TextureDB::replace_textures(const fs::path& path) {
fs::path base_path(path);
for (auto& tex : textures) {