Switch port

README.md

@@ -179,3 +179,6 @@ gba emulator witten in c++23.
 - ocornut for imgui <https://github.com/ocornut/imgui>
 - ocornut for imgui_club <https://github.com/ocornut/imgui_club>
 - everyone that has contributed to the bios decomp <https://github.com/Gericom/gba_bios>
+- [ftpd](https://github.com/mtheall/ftpd) and [nxshell](https://github.com/joel16/NX-Shell) for the deko3d backend for switch.
+- <a target="_blank" href="https://icons8.com/icon/38359/visual-game-boy">Visual Game Boy</a> icon by <a target="_blank" href="https://icons8.com">Icons8</a>
+- <a target="_blank" href="https://icons8.com/icon/71cUHRMvCNMk/mac-folder">Mac Folder</a> icon by <a target="_blank" href="https://icons8.com">Icons8</a>

assets/shaders/nx/imgui_fsh.glsl

@@ -0,0 +1,48 @@
+// ftpd is a server implementation based on the following:
+// - RFC  959 (https://tools.ietf.org/html/rfc959)
+// - RFC 3659 (https://tools.ietf.org/html/rfc3659)
+// - suggested implementation details from https://cr.yp.to/ftp/filesystem.html
+// 
+// The MIT License (MIT)
+//
+// Copyright (C) 2020 Michael Theall
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#version 460
+
+layout (location = 0) in vec2 vtxUv;
+layout (location = 1) in vec4 vtxColor;
+
+layout (binding = 0) uniform sampler2D tex;
+
+layout (std140, binding = 0) uniform FragUBO {
+	uint font;
+} ubo;
+
+layout (location = 0) out vec4 outColor;
+
+void main()
+{
+	// font texture is single-channel (alpha)
+	if (ubo.font != 0)
+	    outColor = vtxColor * vec4 (vec3 (1.0), texture (tex, vtxUv).r);
+	else
+		outColor = vtxColor * texture (tex, vtxUv);
+}

assets/shaders/nx/imgui_vsh.glsl

@@ -0,0 +1,47 @@
+// ftpd is a server implementation based on the following:
+// - RFC  959 (https://tools.ietf.org/html/rfc959)
+// - RFC 3659 (https://tools.ietf.org/html/rfc3659)
+// - suggested implementation details from https://cr.yp.to/ftp/filesystem.html
+// 
+// The MIT License (MIT)
+//
+// Copyright (C) 2020 Michael Theall
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#version 460
+
+layout (location = 0) in vec2 inPos;
+layout (location = 1) in vec2 inUv;
+layout (location = 2) in vec4 inColor;
+
+layout (location = 0) out vec2 vtxUv;
+layout (location = 1) out vec4 vtxColor;
+
+layout (std140, binding = 0) uniform VertUBO
+{
+	mat4 projMtx;
+} ubo;
+
+void main()
+{
+	gl_Position = ubo.projMtx * vec4 (inPos, 0.0, 1.0);
+	vtxUv       = inUv;
+	vtxColor    = inColor;
+}

src/CMakeLists.txt

@@ -37,7 +37,8 @@ list(APPEND gcc_flags
     -Wmissing-requires
 )
 
-if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+# for switch build, always enable full optimisations, even in debug
+if (CMAKE_BUILD_TYPE STREQUAL "Debug" AND NOT NINTENDO_SWITCH)
     list(APPEND gcc_flags -Og) # always enable otherwise debug builds would be too slow
 else()
     list(APPEND gcc_flags -fno-rtti -Ofast)

src/frontend/CMakeLists.txt

@@ -30,8 +30,17 @@ FetchContent_Declare(minizip
     BUILD_COMMAND ""
 )
 
+FetchContent_Declare(stb
+    GIT_REPOSITORY https://github.com/nothings/stb.git
+    GIT_TAG        af1a5bc352164740c1cc1354942b1c6b72eacb8a
+    GIT_PROGRESS   TRUE
+    CONFIGURE_COMMAND ""
+    BUILD_COMMAND ""
+)
+
 FetchContent_MakeAvailable(imgui)
 FetchContent_MakeAvailable(imgui_club)
+FetchContent_MakeAvailable(stb)
 
 add_library(imgui
     ${imgui_SOURCE_DIR}/imgui.cpp
@@ -45,9 +54,12 @@ target_include_directories(imgui PUBLIC ${imgui_SOURCE_DIR})
 
 # memory editor
 add_library(imgui_club INTERFACE)
-target_include_directories(imgui INTERFACE ${imgui_club_SOURCE_DIR}/imgui_memory_editor)
+target_include_directories(imgui_club INTERFACE ${imgui_club_SOURCE_DIR}/imgui_memory_editor)
 # fetch imgui is done!
 
+add_library(stb INTERFACE)
+target_include_directories(stb INTERFACE ${stb_SOURCE_DIR})
+
 # always include backend after fetching imgui
 add_subdirectory(backend)
 
@@ -82,8 +94,13 @@ else()
         target_link_libraries(main PRIVATE ${minizip_lib})
         target_include_directories(main PRIVATE ${minizip_inc})
 
+        # on switch, i need to manually link against
+        # zlib as well, and has to be linked after minizip!
+        find_package(ZLIB REQUIRED)
+        target_link_libraries(main PRIVATE ZLIB::ZLIB)
+
         set(FOUND_MINIZIP TRUE)
-        message(STATUS "using system minizip")
+        message(STATUS "using system minizip lib: ${minizip_lib} inc: ${minizip_inc}")
     endif()
 endif()
 
@@ -127,3 +144,41 @@ target_compile_definitions(main PRIVATE
     DUMP_AUDIO=$<BOOL:${DUMP_AUDIO}>
     DEBUGGER=$<BOOL:${DEBUGGER}>
 )
+
+if (NINTENDO_SWITCH)
+    set(ASSETS ${CMAKE_SOURCE_DIR}/assets)
+
+    # create romfs folder
+    dkp_add_asset_target(main_romfs ${CMAKE_CURRENT_BINARY_DIR}/romfs)
+
+    configure_file(${ASSETS}/icons/icons8-mac-folder-64.png ${CMAKE_CURRENT_BINARY_DIR}/romfs/icons/icons8-mac-folder-64.png COPYONLY)
+    configure_file(${ASSETS}/icons/icons8-visual-game-boy-48.png ${CMAKE_CURRENT_BINARY_DIR}/romfs/icons/icons8-visual-game-boy-48.png COPYONLY)
+
+    # setup nacp
+    nx_generate_nacp(main.nacp
+        NAME "Notorious BEEG"
+        AUTHOR TotalJustice
+        VERSION 0.0.3
+    )
+
+    # create nro (final binary)
+    nx_create_nro(main
+        ICON ${ASSETS}/icons/icon.jpg
+        NACP main.nacp
+        ROMFS main_romfs
+    )
+
+    # compile and add shaders to romfs
+    set(SHADER_FOLDER ${ASSETS}/shaders/nx)
+
+    nx_add_shader_program(imgui_fsh ${SHADER_FOLDER}/imgui_fsh.glsl frag)
+    nx_add_shader_program(imgui_vsh ${SHADER_FOLDER}/imgui_vsh.glsl vert)
+
+    dkp_install_assets(main_romfs
+        DESTINATION shaders
+        TARGETS
+            imgui_fsh
+            imgui_vsh
+    )
+
+endif()

src/frontend/backend/CMakeLists.txt

@@ -1,3 +1,7 @@
 cmake_minimum_required(VERSION 3.20.0)
 
-add_subdirectory(sdl2)
+if (NINTENDO_SWITCH)
+    add_subdirectory(nx)
+else()
+    add_subdirectory(sdl2)
+endif()

src/frontend/backend/sdl2/backend_sdl2.hpp → src/frontend/backend/backend.hpp

@@ -2,18 +2,22 @@
 // SPDX-License-Identifier: GPL-3.0-only
 #pragma once
 
-#include "../../system.hpp"
+#include "../system.hpp"
 #include <cstdint>
 #include <span>
 #include <utility>
 
-namespace sys::backend::sdl2 {
+namespace sys::backend {
 
 [[nodiscard]] auto init() -> bool;
 auto quit() -> void;
 
 auto poll_events() -> void;
+// used for setup
 auto render_begin() -> void;
+// render anything specific to the backend
+auto render() -> void;
+// flip the screen
 auto render_end() -> void;
 
 auto get_texture(TextureID id) -> void*;
@@ -28,4 +32,4 @@ auto toggle_fullscreen() -> void;
 
 auto open_url(const char* url) -> void;
 
-} // sys::backend::sdl2
+} // sys::backend

src/frontend/backend/nx/CMakeLists.txt

@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.20.0)
+
+add_library(backend
+    backend_nx.cpp
+    ftpd_imgui/imgui_deko3d.cpp
+    ftpd_imgui/imgui_nx.cpp
+
+    audio/audio.cpp
+    fs.cpp
+)
+
+target_link_libraries(backend PRIVATE imgui)
+target_link_libraries(backend PRIVATE GBA)
+target_link_libraries(backend PRIVATE deko3d)
+target_link_libraries(backend PRIVATE stb)
+
+# why is this even needed???
+target_include_directories(backend PRIVATE ${DEVKITPRO}/portlibs/switch/include)
+
+target_apply_lto_in_release(backend)