[common/logging] Simplify logging logic and fix issues when logging before system is created (#3688)

- our logging code was bigger than spdlog itself, why???? just keep it simple
- fix issues when logging before logging system is even started
- removes the "initialized logging twice" issue
- removes uneeded indirection in file logging
- uses direct formatting instead of jumping hoopla-around the fmt::format() ressult
- code duplication and dead code removal as usual

I did explore dup2() but I think it's not worth the hassle
I did try `fwopen()` but it's better if things are just kept as-is.

there is a lot of noise because I removed a bunch of redundant files on logging and just put everything in one file

now normally this wouldn't be a good idea, however consider: the complexity of logging; it's less than 500 lines... does it really need a whole subsystem?!?!?! ITS JUST LOGGING

Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3688
Reviewed-by: crueter <crueter@eden-emu.dev>
Reviewed-by: DraVee <chimera@dravee.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

src/video_core/engines/fermi_2d.cpp

@@ -1,11 +1,11 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include "common/assert.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "video_core/engines/fermi_2d.h"
 #include "video_core/engines/sw_blitter/blitter.h"
 #include "video_core/memory_manager.h"

src/video_core/engines/kepler_compute.cpp

@@ -1,9 +1,12 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <bitset>
 #include "common/assert.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/core.h"
 #include "video_core/engines/kepler_compute.h"
 #include "video_core/engines/maxwell_3d.h"

src/video_core/engines/kepler_memory.cpp

@@ -1,8 +1,11 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include "common/assert.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/core.h"
 #include "video_core/engines/kepler_memory.h"
 #include "video_core/engines/maxwell_3d.h"

src/video_core/engines/maxwell_dma.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
@@ -6,7 +6,7 @@
 
 #include "common/algorithm.h"
 #include "common/assert.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include <ranges>
 #include "common/settings.h"
 #include "core/core.h"

src/video_core/engines/nv01_timer.h

@@ -11,7 +11,7 @@
 #include "common/bit_field.h"
 #include "common/common_funcs.h"
 #include "common/common_types.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "video_core/engines/engine_interface.h"
 #include "video_core/engines/engine_upload.h"
 

src/video_core/engines/puller.cpp

@@ -5,7 +5,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "common/assert.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/settings.h"
 #include "core/core.h"
 #include "video_core/control/channel_state.h"

src/video_core/gpu_logging/freedreno_debug.cpp

@@ -4,7 +4,7 @@
 #ifdef ANDROID
 
 #include "video_core/gpu_logging/freedreno_debug.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 
 #include <cstdlib>
 

src/video_core/gpu_logging/gpu_logging.cpp

@@ -10,7 +10,7 @@
 #include "common/fs/fs.h"
 #include "common/fs/path_util.h"
 #include "common/literals.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/settings.h"
 
 namespace GPU::Logging {

src/video_core/gpu_logging/qualcomm_debug.cpp

@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "video_core/gpu_logging/qualcomm_debug.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 
 namespace GPU::Logging::Qualcomm {
 

src/video_core/host1x/ffmpeg/ffmpeg.cpp

@@ -1,11 +1,11 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include "common/assert.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/scope_exit.h"
 #include "common/settings.h"
 #include "core/memory.h"

src/video_core/host1x/vic.cpp

@@ -26,7 +26,7 @@ extern "C" {
 #include "common/alignment.h"
 #include "common/assert.h"
 #include "common/bit_field.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/polyfill_thread.h"
 #include "common/settings.h"
 

src/video_core/macro.cpp

@@ -38,7 +38,7 @@
 
 #include "common/assert.h"
 #include "common/bit_field.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #ifdef ARCHITECTURE_x86_64
 #include "common/x64/xbyak_abi.h"
 #include "common/x64/xbyak_util.h"

src/video_core/memory_manager.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
@@ -8,7 +8,7 @@
 
 #include "common/alignment.h"
 #include "common/assert.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/core.h"
 #include "core/hle/kernel/k_page_table.h"
 #include "core/hle/kernel/k_process.h"

src/video_core/query_cache/query_cache.h

@@ -15,7 +15,7 @@
 
 #include "common/assert.h"
 #include "common/common_types.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/scope_exit.h"
 #include "common/settings.h"
 #include "video_core/engines/maxwell_3d.h"

src/video_core/renderer_base.cpp

@@ -1,9 +1,12 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2015 Citra Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <thread>
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/frontend/emu_window.h"
 #include "core/frontend/graphics_context.h"
 #include "video_core/renderer_base.h"

src/video_core/renderer_opengl/gl_device.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
@@ -16,7 +16,7 @@
 #include <glad/glad.h>
 
 #include "common/literals.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include <ranges>
 #include "common/settings.h"
 #include "shader_recompiler/stage.h"

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: 2015 Citra Emulator Project
@@ -14,7 +14,7 @@
 #include <glad/glad.h>
 
 #include "common/assert.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/math_util.h"
 #include "common/scope_exit.h"
 #include "common/settings.h"

src/video_core/renderer_opengl/gl_shader_cache.cpp

@@ -15,7 +15,7 @@
 #include "common/assert.h"
 #include "common/fs/fs.h"
 #include "common/fs/path_util.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/settings.h"
 #include "common/thread_worker.h"
 #include "shader_recompiler/backend/glasm/emit_glasm.h"

src/video_core/renderer_opengl/gl_shader_util.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2014 Citra Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -5,7 +8,7 @@
 #include <vector>
 #include <glad/glad.h>
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/settings.h"
 #include "video_core/renderer_opengl/gl_shader_util.h"
 

src/video_core/renderer_opengl/renderer_opengl.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: 2014 Citra Emulator Project
@@ -12,7 +12,7 @@
 #include <glad/glad.h>
 
 #include "common/assert.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/settings.h"
 #include "core/core_timing.h"
 #include "core/frontend/emu_window.h"

src/video_core/renderer_vulkan/maxwell_to_vk.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
@@ -8,7 +8,7 @@
 
 #include "common/assert.h"
 #include "common/common_types.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/settings.h"
 #include "video_core/engines/maxwell_3d.h"
 #include "video_core/renderer_vulkan/maxwell_to_vk.h"

src/video_core/renderer_vulkan/pipeline_statistics.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -6,7 +9,7 @@
 #include <fmt/ranges.h>
 
 #include "common/common_types.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "video_core/renderer_vulkan/pipeline_statistics.h"
 #include "video_core/vulkan_common/vulkan_device.h"
 #include "video_core/vulkan_common/vulkan_wrapper.h"

src/video_core/renderer_vulkan/renderer_vulkan.cpp

@@ -14,7 +14,7 @@
 
 #include <fmt/ranges.h>
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include <ranges>
 #include "common/scope_exit.h"
 #include "common/settings.h"

src/video_core/renderer_vulkan/vk_rasterizer.cpp

@@ -14,7 +14,7 @@
 #include "video_core/renderer_vulkan/renderer_vulkan.h"
 
 #include "common/assert.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/scope_exit.h"
 #include "common/settings.h"
 #include "video_core/buffer_cache/buffer_cache.h"

src/video_core/renderer_vulkan/vk_swapchain.cpp

@@ -9,7 +9,7 @@
 #include <limits>
 #include <vector>
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/settings.h"
 #include "common/settings_enums.h"
 #include "video_core/renderer_vulkan/vk_scheduler.h"

src/video_core/renderer_vulkan/vk_update_descriptor.cpp

@@ -1,10 +1,13 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <variant>
 #include <boost/container/static_vector.hpp>
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "video_core/renderer_vulkan/vk_scheduler.h"
 #include "video_core/renderer_vulkan/vk_update_descriptor.h"
 #include "video_core/vulkan_common/vulkan_device.h"

src/video_core/shader_environment.cpp

@@ -17,7 +17,7 @@
 #include "common/div_ceil.h"
 #include "common/fs/fs.h"
 #include "common/fs/path_util.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include <ranges>
 #include "shader_recompiler/environment.h"
 #include "video_core/engines/kepler_compute.h"

src/video_core/surface.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 // SPDX-FileCopyrightText: 2014 Citra Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
@@ -9,7 +9,7 @@
 #include <utility>
 #include "common/assert.h"
 #include "common/common_types.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "video_core/gpu.h"
 #include "video_core/textures/texture.h"
 

src/video_core/texture_cache/format_lookup_table.cpp

@@ -1,8 +1,11 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include "common/common_types.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "video_core/texture_cache/format_lookup_table.h"
 
 namespace VideoCommon {

src/video_core/video_core.cpp

@@ -6,7 +6,7 @@
 
 #include <memory>
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/settings.h"
 #include "core/core.h"
 #include "core/frontend/emu_window.h"

src/video_core/vulkan_common/nsight_aftermath_tracker.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -16,7 +19,7 @@
 #include "common/fs/file.h"
 #include "common/fs/fs.h"
 #include "common/fs/path_util.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/scope_exit.h"
 #include "video_core/vulkan_common/nsight_aftermath_tracker.h"
 

src/video_core/vulkan_common/vulkan_debug_callback.cpp

@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include <string_view>
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/settings.h"
 #include "video_core/vulkan_common/vulkan_debug_callback.h"
 #include "video_core/gpu_logging/gpu_logging.h"

src/video_core/vulkan_common/vulkan_device.h

@@ -14,7 +14,7 @@
 #include <vector>
 
 #include "common/common_types.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/settings.h"
 #include "video_core/vulkan_common/vulkan_wrapper.h"
 

src/video_core/vulkan_common/vulkan_instance.cpp

@@ -12,7 +12,7 @@
 
 #include "common/common_types.h"
 #include "common/dynamic_library.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include <ranges>
 #include <vulkan/vulkan_core.h>
 #include "core/frontend/emu_window.h"

src/video_core/vulkan_common/vulkan_library.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -5,7 +8,7 @@
 
 #include "common/dynamic_library.h"
 #include "common/fs/path_util.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "video_core/vulkan_common/vulkan_library.h"
 
 namespace Vulkan {

src/video_core/vulkan_common/vulkan_memory_allocator.cpp

@@ -16,7 +16,7 @@
 #include "common/assert.h"
 #include "common/common_types.h"
 #include "common/literals.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include <ranges>
 #include "video_core/vulkan_common/vma.h"
 #include "video_core/vulkan_common/vulkan_device.h"

src/video_core/vulkan_common/vulkan_surface.cpp

@@ -4,7 +4,7 @@
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/frontend/emu_window.h"
 #include "video_core/vulkan_common/vulkan_surface.h"
 #include "video_core/vulkan_common/vulkan_wrapper.h"

src/video_core/vulkan_common/vulkan_wrapper.cpp

@@ -11,7 +11,7 @@
 #include <vector>
 
 #include "common/common_types.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "video_core/vulkan_common/vk_enum_string_helper.h"
 #include "video_core/vulkan_common/vma.h"
 #include "video_core/vulkan_common/vulkan_wrapper.h"