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LoadPNG decodes with rpng, straight into the caller's buffer, and SavePNG encodes with rpng through the frontend's VFS. Both go through libretro-common's own deflate, so libspng, and with it one of zlib-ng's users, goes; rpng, its streams and the deflate codec are copied in unchanged from libretro-common. On 72 PNGs of every colour type, 1 to 16 bits a channel, with and without tRNS and Adam7, rpng decodes the same RGBA bytes libspng did, and RGBA rows saved a stride apart read back exactly. Every PNG saved is RGBA, so the RGB format goes, and rpng picks its own compression, so the texture dumps' compression level, which this core does not expose, goes with it.
80 lines
2.2 KiB
C++
80 lines
2.2 KiB
C++
// Copyright 2023 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "VideoCommon/TextureUtils.h"
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#include <fmt/format.h>
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#include "Common/FileSearch.h"
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#include "Common/FileUtil.h"
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#include "Common/Logging/Log.h"
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#include "Common/StringUtil.h"
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#include "Core/ConfigManager.h"
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#include "VideoCommon/AbstractTexture.h"
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namespace
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{
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std::string BuildDumpTextureFilename(std::string basename, u32 level, bool is_arbitrary)
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{
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if (is_arbitrary)
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basename += "_arb";
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if (level > 0)
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basename += fmt::format("_mip{}", level);
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return basename;
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}
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} // namespace
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namespace VideoCommon::TextureUtils
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{
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void DumpTexture(const ::AbstractTexture& texture, std::string basename, u32 level,
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bool is_arbitrary)
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{
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const std::string dump_dir =
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File::GetUserPath(D_DUMPTEXTURES_IDX) + SConfig::GetInstance().GetGameID();
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if (!File::IsDirectory(dump_dir))
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File::CreateDir(dump_dir);
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const std::string name = BuildDumpTextureFilename(std::move(basename), level, is_arbitrary);
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const std::string filename = fmt::format("{}/{}.png", dump_dir, name);
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if (File::Exists(filename))
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return;
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texture.Save(filename, level);
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}
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void TextureDumper::DumpTexture(const ::AbstractTexture& texture, std::string basename, u32 level,
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bool is_arbitrary)
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{
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const std::string dump_dir =
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File::GetUserPath(D_DUMPTEXTURES_IDX) + SConfig::GetInstance().GetGameID();
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if (m_dumped_textures.empty())
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{
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if (!File::IsDirectory(dump_dir))
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File::CreateDir(dump_dir);
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for (auto& filename : Common::DoFileSearch(dump_dir, ".png", true))
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{
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std::string name;
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SplitPath(filename, nullptr, &name, nullptr);
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m_dumped_textures.insert(name);
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}
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NOTICE_LOG_FMT(VIDEO, "Found {} dumped textures that will not be re-dumped.",
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m_dumped_textures.size());
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}
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const std::string name = BuildDumpTextureFilename(std::move(basename), level, is_arbitrary);
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const bool file_existed = !m_dumped_textures.insert(name).second;
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if (file_existed)
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return;
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texture.Save(fmt::format("{}/{}.png", dump_dir, name), level);
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}
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} // namespace VideoCommon::TextureUtils
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