Add Vulkan backend

2024-09-19 17:14:18 +00:00 · 2022-03-20 18:04:00 +01:00 · 2022-03-20 18:04:00 +01:00 · fbeba9eb5f
parent e572704963
commit fbeba9eb5f
43 changed files with 8294 additions and 159 deletions
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@ -14,7 +14,7 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        os: [ubuntu-latest, macOS-latest, windows-latest, ubuntu-18.04]
+        os: [ubuntu-latest, macOS-latest, windows-latest, ubuntu-20.04]
        include:
        - os: ubuntu-latest
          cmake-args: -G Ninja
@ -23,7 +23,7 @@ jobs:
          env:
            CFLAGS: -Wdeclaration-after-statement -Werror
            CXXFLAGS: -Werror
-        - os: ubuntu-18.04
+        - os: ubuntu-20.04
          cmake-path: /usr/bin/
          cmake-args: -G Ninja
          package-file: "*-linux_x86_64.tar.xz"
@ -57,7 +57,7 @@ jobs:
      if: contains(matrix.os, 'ubuntu')
      run: |
        sudo apt-get update -y
-        sudo apt-get install pkg-config cmake ninja-build libfreetype6-dev libnotify-dev libsdl2-dev libsqlite3-dev libavcodec-dev libavformat-dev libavutil-dev libswresample-dev libswscale-dev libx264-dev -y
+        sudo apt-get install pkg-config cmake ninja-build libfreetype6-dev libnotify-dev libsdl2-dev libsqlite3-dev libvulkan-dev glslang-tools spirv-tools libavcodec-dev libavformat-dev libavutil-dev libswresample-dev libswscale-dev libx264-dev -y

    - name: Prepare Linux (fancy)
      if: contains(matrix.os, 'ubuntu') && matrix.fancy
@ -78,7 +78,7 @@ jobs:
      if: contains(matrix.os, 'macOS')
      run: |
        brew update || true
-        brew install pkg-config sdl2 ffmpeg python3 ninja
+        brew install pkg-config sdl2 ffmpeg python3 ninja molten-vk vulkan-headers glslang spirv-tools
        brew upgrade freetype
        pip3 install dmgbuild
        sudo rm -rf /Library/Developer/CommandLineTools
--- a/.github/workflows/clang-tidy.yml
+++ b/.github/workflows/clang-tidy.yml
@ -20,7 +20,7 @@ jobs:
    - name: Install clang-tidy
      run: |
        sudo apt-get update -y
-        sudo apt-get install pkg-config cmake ninja-build libfreetype6-dev libnotify-dev libsdl2-dev libsqlite3-dev libavcodec-dev libavformat-dev libavutil-dev libswresample-dev libswscale-dev libx264-dev clang-tidy -y
+        sudo apt-get install pkg-config cmake ninja-build libfreetype6-dev libnotify-dev libsdl2-dev libsqlite3-dev libavcodec-dev libavformat-dev libavutil-dev libswresample-dev libswscale-dev libx264-dev clang-tidy libvulkan-dev glslang-tools spirv-tools -y
    - name: Build with clang-tidy
      run: |
        mkdir clang-tidy
--- a/.github/workflows/codeql-analysis.yaml
+++ b/.github/workflows/codeql-analysis.yaml
@ -38,7 +38,7 @@ jobs:
      if: matrix.language == 'cpp'
      run: |
       sudo apt-get update -y
-       sudo apt-get install pkg-config cmake ninja-build libfreetype6-dev libnotify-dev libsdl2-dev libsqlite3-dev libavcodec-dev libavformat-dev libavutil-dev libswresample-dev libswscale-dev libx264-dev libmariadbclient-dev libwebsockets-dev -y
+       sudo apt-get install pkg-config cmake ninja-build libfreetype6-dev libnotify-dev libsdl2-dev libsqlite3-dev libavcodec-dev libavformat-dev libavutil-dev libswresample-dev libswscale-dev libx264-dev libmariadbclient-dev libwebsockets-dev libvulkan-dev glslang-tools spirv-tools -y

    # Initializes the CodeQL tools for scanning.
    - name: Initialize CodeQL
--- a/.github/workflows/style.yml
+++ b/.github/workflows/style.yml
@ -19,7 +19,7 @@ jobs:
    - name: Prepare
      run: |
        sudo apt-get update -y
-        sudo apt-get install clang-format imagemagick ddnet-tools shellcheck pkg-config cmake ninja-build libfreetype6-dev libnotify-dev libsdl2-dev libsqlite3-dev libavcodec-dev libavformat-dev libavutil-dev libswresample-dev libswscale-dev libx264-dev pylint3 python3-clang -y
+        sudo apt-get install clang-format imagemagick ddnet-tools shellcheck pkg-config cmake ninja-build libfreetype6-dev libnotify-dev libsdl2-dev libsqlite3-dev libavcodec-dev libavformat-dev libavutil-dev libswresample-dev libswscale-dev libx264-dev pylint3 python3-clang libvulkan-dev glslang-tools spirv-tools -y
        mkdir release
        cd release
        cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DDOWNLOAD_GTEST=OFF -DCMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE=. ..
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -93,9 +93,14 @@ else()
 endif()

 set(AUTO_DEPENDENCIES_DEFAULT OFF)
+set(AUTO_VULKAN_BACKEND ON)
 if(TARGET_OS STREQUAL "windows")
  set(AUTO_DEPENDENCIES_DEFAULT ON)
-elseif(TARGET_OS STREQUAL "linux")
+  if(TARGET_CPU_ARCHITECTURE STREQUAL "x86")
+    set(AUTO_VULKAN_BACKEND OFF)
+  endif()
+elseif(TARGET_OS STREQUAL "mac")
+  set(AUTO_VULKAN_BACKEND OFF)
 endif()

 option(WEBSOCKETS "Enable websockets support" OFF)
@ -116,6 +121,7 @@ option(DISCORD "Enable Discord rich presence support" OFF)
 option(DISCORD_DYNAMIC "Enable discovering Discord rich presence libraries at runtime (Linux only)" OFF)
 option(PREFER_BUNDLED_LIBS "Prefer bundled libraries over system libraries" ${AUTO_DEPENDENCIES_DEFAULT})
 option(DEV "Don't generate stuff necessary for packaging" OFF)
+option(VULKAN "Enable the vulkan backend" ${AUTO_VULKAN_BACKEND})

 option(EXCEPTION_HANDLING "Enable exception handling (only works with Windows as of now)" OFF)

@ -467,6 +473,15 @@ if(TARGET_OS AND TARGET_OS STREQUAL "mac")
  find_program(DMGBUILD dmgbuild)
 endif()

+set(VULKAN_SHADER_FILE_LIST "" CACHE STRING "Vulkan shader file list")
+if(VULKAN)
+  find_package(Vulkan)
+  include(cmake/BuildVulkanShaders.cmake)
+else()
+  set(VULKAN_LIBRARIES)
+  set(VULKAN_INCLUDE_DIRS)
+endif()
+
 message(STATUS "******** ${CMAKE_PROJECT_NAME} ********")
 set(TARGET "Target OS: ${TARGET_OS} ${CMAKE_SYSTEM_PROCESSOR}")
 if(TARGET_OS STREQUAL "mac")
@ -528,6 +543,10 @@ if(WEBSOCKETS)
  show_dependency_status("Websockets" WEBSOCKETS)
 endif()

+if(VULKAN)
+  show_dependency_status("Vulkan" VULKAN)
+endif()
+
 if(CLIENT AND NOT(CURL_FOUND))
  message(SEND_ERROR "You must install Curl to compile DDNet")
 endif()
@ -591,6 +610,10 @@ if(NOT(GTEST_FOUND))
  endif()
 endif()

+if(VULKAN AND CLIENT AND NOT(VULKAN_FOUND))
+  message(SEND_ERROR "You must install Vulkan libraries to compile the DDNet client")
+endif()
+
 if(TARGET_OS STREQUAL "windows")
  set(PLATFORM_CLIENT)
  set(PLATFORM_CLIENT_LIBS opengl32 winmm)
@ -1277,6 +1300,20 @@ set(EXPECTED_DATA
  shader/text.vert
  shader/tile.frag
  shader/tile.vert
+  shader/vulkan/prim.frag
+  shader/vulkan/prim.vert
+  shader/vulkan/prim3d.frag
+  shader/vulkan/prim3d.vert
+  shader/vulkan/primex.frag
+  shader/vulkan/primex.vert
+  shader/vulkan/quad.frag
+  shader/vulkan/quad.vert
+  shader/vulkan/spritemulti.frag
+  shader/vulkan/spritemulti.vert
+  shader/vulkan/text.frag
+  shader/vulkan/text.vert
+  shader/vulkan/tile.frag
+  shader/vulkan/tile.vert
  skins/Aoe4leg.png
  skins/PaladiN.png
  skins/antiantey.png
@ -1422,6 +1459,7 @@ set(COPY_FILES
  ${FFMPEG_COPY_FILES}
  ${WEBSOCKETS_COPY_FILES}
  ${DISCORDSDK_COPY_FILES}
+  ${VULKAN_COPY_FILES}
  ${EXCEPTION_HANDLING_COPY_FILES}
 )
 file(COPY ${COPY_FILES} DESTINATION .)
@ -1775,6 +1813,8 @@ if(CLIENT)
    backend/opengles/gles_class_defines.h
    backend/opengles/opengles_sl.cpp
    backend/opengles/opengles_sl_program.cpp
+    backend/vulkan/backend_vulkan.cpp
+    backend/vulkan/backend_vulkan.h
    backend_sdl.cpp
    backend_sdl.h
    blocklist_driver.cpp
@ -1962,6 +2002,8 @@ if(CLIENT)
    ${OPUS_LIBRARIES}
    ${OGG_LIBRARIES}

+    ${VULKAN_LIBRARIES}
+
    ${TARGET_STEAMAPI}

    ${PLATFORM_CLIENT_LIBS}
@ -2033,6 +2075,8 @@ if(CLIENT)
    ${FFMPEG_INCLUDE_DIRS}
    ${DISCORDSDK_INCLUDE_DIRS}

+    ${VULKAN_INCLUDE_DIRS}
+
    ${PLATFORM_CLIENT_INCLUDE_DIRS}
  )

@ -2065,6 +2109,10 @@ if(CLIENT)
 	  target_compile_definitions(${TARGET_CLIENT} PRIVATE CONF_GLEW_HAS_CONTEXT_INIT)
  endif()

+  if(VULKAN)
+	  target_compile_definitions(${TARGET_CLIENT} PRIVATE CONF_BACKEND_VULKAN)
+  endif()
+
  list(APPEND TARGETS_OWN ${TARGET_CLIENT})
  list(APPEND TARGETS_LINK ${TARGET_CLIENT})
 endif()
@ -2578,6 +2626,11 @@ set(CPACK_FILES
  storage.cfg
  ${COPY_FILES}
 )
+
+set(CPACK_GEN_FILES
+  ${VULKAN_SHADER_FILE_LIST}
+)
+
 if(TARGET_OS STREQUAL "windows")
  list(APPEND CPACK_FILES other/config_directory.bat)
 endif()
@ -2600,6 +2653,9 @@ if(NOT DEV)
    install(FILES other/icons/DDNet_${SIZE}x${SIZE}x32.png DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/icons/hicolor/${SIZE}x${SIZE}/apps RENAME ddnet.png COMPONENT client)
    install(FILES other/icons/DDNet-Server_${SIZE}x${SIZE}x32.png DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/icons/hicolor/${SIZE}x${SIZE}/apps RENAME ddnet-server.png COMPONENT server)
  endforeach()
+  foreach(file ${VULKAN_SHADER_FILE_LIST})
+    install(FILES ${PROJECT_BINARY_DIR}/${file} DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/ddnet/data/shader/vulkan COMPONENT client)
+  endforeach()
 endif()

 if(DEV)
@ -2610,7 +2666,8 @@ else()
  set(EXTRA_ARGS DESTINATION ${CPACK_PACKAGE_FILE_NAME} COMPONENT portable EXCLUDE_FROM_ALL)
  install(TARGETS ${CPACK_TARGETS} ${EXTRA_ARGS})
  install(DIRECTORY ${CPACK_DIRS} ${EXTRA_ARGS})
-  install(FILES ${CPACK_FILES} ${EXTRA_ARGS})
+  set(CPACK_FILES_TMP ${CPACK_FILES} ${CPACK_GEN_FILES})
+  install(FILES ${CPACK_FILES_TMP} ${EXTRA_ARGS})
 endif()

 set(PACKAGE_TARGETS)
@ -2714,6 +2771,9 @@ foreach(ext zip tar.gz tar.xz)
  foreach(file ${CPACK_FILES})
    list(APPEND COPY_FILE_COMMANDS COMMAND ${CMAKE_COMMAND} -E copy ${PROJECT_SOURCE_DIR}/${file} ${TMPDIR}/)
  endforeach()
+  foreach(file ${CPACK_GEN_FILES})
+    list(APPEND COPY_FILE_COMMANDS COMMAND ${CMAKE_COMMAND} -E copy ${PROJECT_BINARY_DIR}/${file} ${TMPDIR}/${file})
+  endforeach()
  foreach(dir ${CPACK_DIRS})
    list(APPEND COPY_DIR_COMMANDS COMMAND ${CMAKE_COMMAND} -E copy_directory ${PROJECT_SOURCE_DIR}/${dir} ${TMPDIR}/${dir})
  endforeach()
@ -2761,6 +2821,7 @@ unset(CPACK_SOURCE_FILES_INVERTED)
 unset(CPACK_TARGETS)
 unset(CPACK_DIRS)
 unset(CPACK_FILES)
+unset(CPACK_GEN_FILES)

 include(CPack)

--- a/README.md
+++ b/README.md
@ -34,21 +34,21 @@ Dependencies on Linux / macOS

 You can install the required libraries on your system, `touch CMakeLists.txt` and CMake will use the system-wide libraries by default. You can install all required dependencies and CMake on Debian or Ubuntu like this:

-    sudo apt install build-essential cmake git google-mock libcurl4-openssl-dev libssl-dev libfreetype6-dev libglew-dev libnotify-dev libogg-dev libopus-dev libopusfile-dev libpnglite-dev libsdl2-dev libsqlite3-dev libwavpack-dev python libx264-dev libavfilter-dev libavdevice-dev libavformat-dev libavcodec-extra libavutil-dev
+    sudo apt install build-essential cmake git google-mock libcurl4-openssl-dev libssl-dev libfreetype6-dev libglew-dev libnotify-dev libogg-dev libopus-dev libopusfile-dev libpnglite-dev libsdl2-dev libsqlite3-dev libwavpack-dev python libx264-dev libavfilter-dev libavdevice-dev libavformat-dev libavcodec-extra libavutil-dev libvulkan-dev glslang-tools spirv-tools

 Or on CentOS, RedHat and AlmaLinux like this:

-    sudo yum install gcc gcc-c++ make cmake git python2 gtest-devel gmock-devel libcurl-devel openssl-devel freetype-devel glew-devel libnotify-devel libogg-devel opus-devel opusfile-devel pnglite-devel SDL2-devel sqlite-devel wavpack-devel libx264-devel ffmpeg-devel
+    sudo yum install gcc gcc-c++ make cmake git python2 gtest-devel gmock-devel libcurl-devel openssl-devel freetype-devel glew-devel libnotify-devel libogg-devel opus-devel opusfile-devel pnglite-devel SDL2-devel sqlite-devel wavpack-devel libx264-devel ffmpeg-devel vulkan-devel glslang spirv-tools

 Or on Arch Linux like this:

-    sudo pacman -S --needed base-devel cmake curl freetype2 git glew gmock libnotify opusfile python sdl2 sqlite wavpack x264 ffmpeg
+    sudo pacman -S --needed base-devel cmake curl freetype2 git glew gmock libnotify opusfile python sdl2 sqlite wavpack x264 ffmpeg vulkan-icd-loader vulkan-headers glslang spirv-tools

 There is an [AUR package for pnglite](https://aur.archlinux.org/packages/pnglite/). For instructions on installing it, see [AUR packages installation instructions on ArchWiki](https://wiki.archlinux.org/index.php/Arch_User_Repository#Installing_packages).

 On macOS you can use [homebrew](https://brew.sh/) to install build dependencies like this:

-    brew install cmake freetype glew googletest opusfile SDL2 wavpack x264 ffmpeg
+    brew install cmake freetype glew googletest opusfile SDL2 wavpack x264 ffmpeg molten-vk vulkan-headers glslang spirv-tools

 If you don't want to use the system libraries, you can pass the `-DPREFER_BUNDLED_LIBS=ON` parameter to cmake.

@ -109,6 +109,10 @@ Whether to optimize for development, speeding up the compilation process a littl
 Whether to enable UPnP support for the server.
 You need to install `libminiupnpc-dev` on Debian, `miniupnpc` on Arch Linux.

+* **-DVULKAN=[ON|OFF]** <br>
+Whether to enable the vulkan backend.
+On Windows you need to install the Vulkan SDK and set the `VULKAN_SDK` environment flag accordingly.
+
 * **-GNinja** <br>
 Use the Ninja build system instead of Make. This automatically parallizes the build and is generally faster. Compile with `ninja` instead of `make`. Install Ninja with `sudo apt install ninja-build` on Debian, `sudo pacman -S --needed ninja` on Arch Linux.

--- a/cmake/BuildVulkanShaders.cmake
+++ b/cmake/BuildVulkanShaders.cmake
@ -0,0 +1,175 @@
+find_program(GLSLANG_VALIDATOR_PROGRAM glslangValidator)
+find_program(SPIRV_OPTIMIZER_PROGRAM spirv-opt)
+
+set(GLSLANG_VALIDATOR_PROGRAM_FOUND TRUE)
+if(NOT GLSLANG_VALIDATOR_PROGRAM)
+  set(GLSLANG_VALIDATOR_PROGRAM_FOUND FALSE)
+  if(TARGET_OS STREQUAL "windows")
+    if(${TARGET_CPU_ARCHITECTURE} STREQUAL "x86_64")
+      set(GLSLANG_VALIDATOR_PROGRAM "$ENV{VULKAN_SDK}/Bin/glslangValidator.exe")
+    else()
+      set(GLSLANG_VALIDATOR_PROGRAM "$ENV{VULKAN_SDK}/Bin32/glslangValidator.exe")
+    endif()
+  endif()
+
+  if(EXISTS ${GLSLANG_VALIDATOR_PROGRAM})
+    set(GLSLANG_VALIDATOR_PROGRAM_FOUND TRUE)
+  elseif(${TARGET_CPU_ARCHITECTURE} STREQUAL "x86_64")
+    set(GLSLANG_VALIDATOR_PROGRAM "${PROJECT_SOURCE_DIR}/ddnet-libs/vulkan/windows/lib64/glslangValidator.exe")
+    if(EXISTS ${GLSLANG_VALIDATOR_PROGRAM})
+      set(GLSLANG_VALIDATOR_PROGRAM_FOUND TRUE)
+    endif()
+  endif()
+
+  if(${GLSLANG_VALIDATOR_PROGRAM_FOUND} EQUAL FALSE)
+    message(FATAL_ERROR "glslangValidator binary was not found. Did you install the Vulkan SDK / packages ?")
+  endif()
+endif()
+
+set(SPIRV_OPTIMIZER_PROGRAM_FOUND TRUE)
+if(NOT SPIRV_OPTIMIZER_PROGRAM)
+  set(SPIRV_OPTIMIZER_PROGRAM_FOUND FALSE)
+  if(TARGET_OS STREQUAL "windows")
+    if (${TARGET_CPU_ARCHITECTURE} STREQUAL "x86_64")
+      set(SPIRV_OPTIMIZER_PROGRAM "$ENV{VULKAN_SDK}/Bin/spirv-opt.exe")
+    else()
+      set(SPIRV_OPTIMIZER_PROGRAM "$ENV{VULKAN_SDK}/Bin32/spirv-opt.exe")
+    endif()
+  endif()
+
+  if(EXISTS ${SPIRV_OPTIMIZER_PROGRAM})
+    set(SPIRV_OPTIMIZER_PROGRAM_FOUND TRUE)
+  endif()
+endif()
+
+file(GLOB_RECURSE GLSL_SHADER_FILES
+  "data/shaders/vulkan/*.frag"
+  "data/shaders/vulkan/*.vert"
+)
+
+set(TMP_SHADER_SHA256_LIST "")
+foreach(GLSL_SHADER_FILE ${GLSL_SHADER_FILES})
+  file(SHA256 ${FILE_NAME} TMP_FILE_SHA)
+  set(TMP_SHADER_SHA256_LIST "${TMP_SHADER_SHA256_LIST}${TMP_FILE_SHA}")
+endforeach(GLSL_SHADER_FILE)
+
+string(SHA256 GLSL_SHADER_SHA256 "${TMP_SHADER_SHA256_LIST}")
+set(GLSL_SHADER_SHA256 "${GLSL_SHADER_SHA256}@v1")
+
+set(FOUND_MATCHING_SHA256_FILE FALSE)
+
+if(EXISTS "${PROJECT_BINARY_DIR}/vulkan_shaders_sha256.txt")
+  file(STRINGS "${PROJECT_BINARY_DIR}/vulkan_shaders_sha256.txt" VULKAN_SHADERS_SHA256_FILE_CONTENT)
+  if("${VULKAN_SHADERS_SHA256_FILE_CONTENT}" STREQUAL "${GLSL_SHADER_SHA256}")
+    set(FOUND_MATCHING_SHA256_FILE TRUE)
+  endif()
+endif()
+
+set(TW_VULKAN_VERSION "vulkan100")
+
+set(GLSLANG_VALIDATOR_COMMAND_LIST)
+set(GLSLANG_VALIDATOR_DELETE_LIST)
+set(SPIRV_OPTIMIZER_COMMAND_LIST)
+function(generate_shader_file FILE_ARGS1 FILE_ARGS2 FILE_NAME FILE_OUTPUT_NAME)
+  set(FILE_TMP_NAME_POSTFIX "")
+  if(SPIRV_OPTIMIZER_PROGRAM_FOUND)
+    set(FILE_TMP_NAME_POSTFIX ".tmp")
+  endif()
+  list(APPEND GLSLANG_VALIDATOR_COMMAND_LIST COMMAND ${GLSLANG_VALIDATOR_PROGRAM} --client ${TW_VULKAN_VERSION} ${FILE_ARGS1} ${FILE_ARGS2} ${FILE_NAME} -o "${PROJECT_BINARY_DIR}/${FILE_OUTPUT_NAME}${FILE_TMP_NAME_POSTFIX}")
+  if(SPIRV_OPTIMIZER_PROGRAM_FOUND)
+    list(APPEND SPIRV_OPTIMIZER_COMMAND_LIST COMMAND ${SPIRV_OPTIMIZER_PROGRAM} -O "${PROJECT_BINARY_DIR}/${FILE_OUTPUT_NAME}${FILE_TMP_NAME_POSTFIX}" -o "${PROJECT_BINARY_DIR}/${FILE_OUTPUT_NAME}")
+    list(APPEND GLSLANG_VALIDATOR_DELETE_LIST "${PROJECT_BINARY_DIR}/${FILE_OUTPUT_NAME}${FILE_TMP_NAME_POSTFIX}")
+  endif()
+  file(RELATIVE_PATH TMP_SHADER_FILE_REL "${PROJECT_SOURCE_DIR}" "${PROJECT_BINARY_DIR}/${FILE_OUTPUT_NAME}")
+  list(APPEND VULKAN_SHADER_FILE_LIST "${FILE_OUTPUT_NAME}")
+  set(VULKAN_SHADER_FILE_LIST ${VULKAN_SHADER_FILE_LIST} PARENT_SCOPE)
+  set(GLSLANG_VALIDATOR_DELETE_LIST ${GLSLANG_VALIDATOR_DELETE_LIST} PARENT_SCOPE)
+  set(SPIRV_OPTIMIZER_COMMAND_LIST ${SPIRV_OPTIMIZER_COMMAND_LIST} PARENT_SCOPE)
+  set(GLSLANG_VALIDATOR_COMMAND_LIST ${GLSLANG_VALIDATOR_COMMAND_LIST} PARENT_SCOPE)
+endfunction()
+
+if(NOT FOUND_MATCHING_SHA256_FILE)
+  message(STATUS "Building vulkan shaders")
+  execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory "${PROJECT_BINARY_DIR}/data/shader/vulkan/")
+
+  unset(VULKAN_SHADER_FILE_LIST CACHE)
+  
+  # primitives
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/prim.frag" "data/shader/vulkan/prim.frag.spv")
+  generate_shader_file("-DTW_TEXTURED" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/prim.frag" "data/shader/vulkan/prim_textured.frag.spv")
+  
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/prim.vert" "data/shader/vulkan/prim.vert.spv")
+  generate_shader_file("-DTW_TEXTURED" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/prim.vert" "data/shader/vulkan/prim_textured.vert.spv")
+  
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/prim3d.frag" "data/shader/vulkan/prim3d.frag.spv")
+  generate_shader_file("-DTW_TEXTURED" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/prim3d.frag" "data/shader/vulkan/prim3d_textured.frag.spv")
+  
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/prim3d.vert" "data/shader/vulkan/prim3d.vert.spv")
+  generate_shader_file("-DTW_TEXTURED" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/prim3d.vert" "data/shader/vulkan/prim3d_textured.vert.spv")
+  
+  # text
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/text.frag" "data/shader/vulkan/text.frag.spv")
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/text.vert" "data/shader/vulkan/text.vert.spv")
+  
+  # quad container
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/primex.frag" "data/shader/vulkan/primex.frag.spv")
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/primex.vert" "data/shader/vulkan/primex.vert.spv")
+  
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/primex.frag" "data/shader/vulkan/primex_rotationless.frag.spv")
+  generate_shader_file("-DTW_ROTATIONLESS" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/primex.vert" "data/shader/vulkan/primex_rotationless.vert.spv")
+  
+  generate_shader_file("-DTW_TEXTURED" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/primex.frag" "data/shader/vulkan/primex_tex.frag.spv")
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/primex.vert" "data/shader/vulkan/primex_tex.vert.spv")
+  
+  generate_shader_file("-DTW_TEXTURED" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/primex.frag" "data/shader/vulkan/primex_tex_rotationless.frag.spv")
+  generate_shader_file("-DTW_ROTATIONLESS" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/primex.vert" "data/shader/vulkan/primex_tex_rotationless.vert.spv")
+  
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/spritemulti.frag" "data/shader/vulkan/spritemulti.frag.spv")
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/spritemulti.vert" "data/shader/vulkan/spritemulti.vert.spv")
+  
+  generate_shader_file("-DTW_PUSH_CONST" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/spritemulti.frag" "data/shader/vulkan/spritemulti_push.frag.spv")
+  generate_shader_file("-DTW_PUSH_CONST" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/spritemulti.vert" "data/shader/vulkan/spritemulti_push.vert.spv")
+  
+  # tile layer
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.frag" "data/shader/vulkan/tile.frag.spv")
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.vert" "data/shader/vulkan/tile.vert.spv")
+  
+  generate_shader_file("-DTW_TILE_TEXTURED" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.frag" "data/shader/vulkan/tile_textured.frag.spv")
+  generate_shader_file("-DTW_TILE_TEXTURED" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.vert" "data/shader/vulkan/tile_textured.vert.spv")
+  
+  generate_shader_file("-DTW_TILE_BORDER" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.frag" "data/shader/vulkan/tile_border.frag.spv")
+  generate_shader_file("-DTW_TILE_BORDER" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.vert" "data/shader/vulkan/tile_border.vert.spv")
+  
+  generate_shader_file("-DTW_TILE_BORDER" "-DTW_TILE_TEXTURED" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.frag" "data/shader/vulkan/tile_border_textured.frag.spv")
+  generate_shader_file("-DTW_TILE_BORDER" "-DTW_TILE_TEXTURED" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.vert" "data/shader/vulkan/tile_border_textured.vert.spv")
+  
+  generate_shader_file("-DTW_TILE_BORDER_LINE" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.frag" "data/shader/vulkan/tile_border_line.frag.spv")
+  generate_shader_file("-DTW_TILE_BORDER_LINE" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.vert" "data/shader/vulkan/tile_border_line.vert.spv")
+  
+  generate_shader_file("-DTW_TILE_BORDER_LINE" "-DTW_TILE_TEXTURED" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.frag" "data/shader/vulkan/tile_border_line_textured.frag.spv")
+  generate_shader_file("-DTW_TILE_BORDER_LINE" "-DTW_TILE_TEXTURED" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/tile.vert" "data/shader/vulkan/tile_border_line_textured.vert.spv")
+  
+  # quad layer
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/quad.frag" "data/shader/vulkan/quad.frag.spv")
+  generate_shader_file("" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/quad.vert" "data/shader/vulkan/quad.vert.spv")
+  
+  generate_shader_file("-DTW_PUSH_CONST" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/quad.frag" "data/shader/vulkan/quad_push.frag.spv")
+  generate_shader_file("-DTW_PUSH_CONST" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/quad.vert" "data/shader/vulkan/quad_push.vert.spv")
+  
+  generate_shader_file("-DTW_QUAD_TEXTURED" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/quad.frag" "data/shader/vulkan/quad_textured.frag.spv")
+  generate_shader_file("-DTW_QUAD_TEXTURED" "" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/quad.vert" "data/shader/vulkan/quad_textured.vert.spv")
+  
+  generate_shader_file("-DTW_QUAD_TEXTURED" "-DTW_PUSH_CONST" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/quad.frag" "data/shader/vulkan/quad_push_textured.frag.spv")
+  generate_shader_file("-DTW_QUAD_TEXTURED" "-DTW_PUSH_CONST" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/quad.vert" "data/shader/vulkan/quad_push_textured.vert.spv")
+
+  execute_process(${GLSLANG_VALIDATOR_COMMAND_LIST})
+  if(SPIRV_OPTIMIZER_PROGRAM_FOUND)
+    execute_process(${SPIRV_OPTIMIZER_COMMAND_LIST})
+    file(REMOVE ${GLSLANG_VALIDATOR_DELETE_LIST})
+  endif()
+
+  set(VULKAN_SHADER_FILE_LIST ${VULKAN_SHADER_FILE_LIST} CACHE STRING "Vulkan shader file list" FORCE)
+
+  message(STATUS "Finished building vulkan shaders")
+  file(WRITE "${PROJECT_BINARY_DIR}/vulkan_shaders_sha256.txt" "${GLSL_SHADER_SHA256}")
+endif()
--- a/cmake/FindVulkan.cmake
+++ b/cmake/FindVulkan.cmake
@ -0,0 +1,61 @@
+if(NOT CMAKE_CROSSCOMPILING)
+  find_package(PkgConfig QUIET)
+  pkg_check_modules(PC_VULKAN vulkan)
+  if(PC_VULKAN_FOUND)
+    set(VULKAN_INCLUDE_DIRS "${PC_VULKAN_INCLUDE_DIRS}")
+    set(VULKAN_LIBRARIES "${PC_VULKAN_LIBRARIES}")
+    set(VULKAN_FOUND TRUE)
+  endif()
+endif()
+
+if(NOT VULKAN_FOUND)
+  if(TARGET_OS STREQUAL "android")
+    find_library(VULKAN_LIBRARIES
+      NAMES vulkan
+    )
+
+    find_path(
+      VULKAN_INCLUDE_DIRS
+      NAMES vulkan/vulkan.h
+    )
+  elseif(TARGET_OS STREQUAL "mac")
+    find_library(VULKAN_LIBRARIES
+      NAMES MoltenVK
+    )
+
+    find_path(
+      VULKAN_INCLUDE_DIRS
+      NAMES vulkan/vulkan.h
+    )
+  else()
+    set_extra_dirs_lib(VULKAN vulkan)
+    find_library(VULKAN_LIBRARIES
+      NAMES vulkan vulkan-1
+      HINTS ${HINTS_VULKAN_LIBDIR} ${PC_VULKAN_LIBDIR} ${PC_VULKAN_LIBRARY_DIRS}
+      PATHS ${PATHS_VULKAN_LIBDIR}
+      ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
+    )
+
+    set_extra_dirs_include(VULKAN vulkan "${VULKAN_LIBRARIES}")
+    find_path(
+      VULKAN_INCLUDE_DIRS
+      NAMES vulkan/vulkan.h
+      HINTS ${HINTS_VULKAN_INCLUDEDIR} ${PC_VULKAN_INCLUDEDIR} ${PC_VULKAN_INCLUDE_DIRS}
+      PATHS ${PATHS_VULKAN_INCLUDEDIR}
+      ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
+    )
+  endif()
+
+  if(VULKAN_INCLUDE_DIRS AND VULKAN_LIBRARIES)
+    set(VULKAN_FOUND TRUE)
+  else(VULKAN_INCLUDE_DIRS AND VULKAN_LIBRARIES)
+    set(VULKAN_FOUND FALSE)
+  endif(VULKAN_INCLUDE_DIRS AND VULKAN_LIBRARIES)
+endif()
+
+if(TARGET_OS STREQUAL "windows")
+  is_bundled(VULKAN_BUNDLED "${VULKAN_LIBRARIES}")
+  if(VULKAN_BUNDLED)
+    set(VULKAN_COPY_FILES "${EXTRA_VULKAN_LIBDIR}/vulkan-1.dll")
+  endif()
+endif()
--- a/data/editor/background.png
+++ b/data/editor/background.png
--- a/data/editor/checker.png
+++ b/data/editor/checker.png
--- a/data/shader/vulkan/prim.frag
+++ b/data/shader/vulkan/prim.frag
@ -0,0 +1,20 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+#ifdef TW_TEXTURED
+layout(binding = 0) uniform sampler2D gTextureSampler;
+#endif
+
+layout(location = 0) noperspective in vec2 texCoord;
+layout(location = 1) noperspective in vec4 vertColor;
+
+layout(location = 0) out vec4 FragClr;
+void main()
+{
+#ifdef TW_TEXTURED
+	vec4 tex = texture(gTextureSampler, texCoord);
+	FragClr = tex * vertColor;
+#else
+	FragClr = vertColor;
+#endif
+}
--- a/data/shader/vulkan/prim.vert
+++ b/data/shader/vulkan/prim.vert
@ -0,0 +1,20 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout (location = 0) in vec2 inVertex;
+layout (location = 1) in vec2 inVertexTexCoord;
+layout (location = 2) in vec4 inVertexColor;
+
+layout(push_constant) uniform SPosBO {
+	layout(offset = 0) mat4x2 gPos;
+} gPosBO;
+
+layout (location = 0) noperspective out vec2 texCoord;
+layout (location = 1) noperspective out vec4 vertColor;
+
+void main()
+{
+	gl_Position = vec4(gPosBO.gPos * vec4(inVertex, 0.0, 1.0), 0.0, 1.0);
+	texCoord = inVertexTexCoord;
+	vertColor = vec4(inVertexColor);
+}
--- a/data/shader/vulkan/prim3d.frag
+++ b/data/shader/vulkan/prim3d.frag
@ -0,0 +1,24 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+#ifdef TW_TEXTURED
+layout (binding = 0) uniform sampler2DArray gTextureSampler;
+#endif
+
+layout (location = 0) noperspective in vec4 oVertColor;
+#ifdef TW_TEXTURED
+layout (location = 1) noperspective in vec3 oTexCoord;
+#endif
+
+layout (location = 0) out vec4 FragClr;
+
+void main()
+{
+#ifdef TW_TEXTURED
+	vec4 TexColor = texture(gTextureSampler, oTexCoord.xyz).rgba;
+	FragClr = TexColor.rgba * oVertColor.rgba;
+#else
+	FragClr = oVertColor.rgba;
+#endif
+}
+
--- a/data/shader/vulkan/prim3d.vert
+++ b/data/shader/vulkan/prim3d.vert
@ -0,0 +1,24 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout (location = 0) in vec2 inVertex;
+layout (location = 1) in vec4 inVertexColor;
+layout (location = 2) in vec3 inVertexTexCoord;
+
+layout(push_constant) uniform SPosBO {
+	layout(offset = 0) mat4x2 gPos;
+} gPosBO;
+
+layout (location = 0) noperspective out vec4 oVertColor;
+#ifdef TW_TEXTURED
+layout (location = 1) noperspective out vec3 oTexCoord;
+#endif
+
+void main()
+{
+	gl_Position = vec4(gPosBO.gPos * vec4(inVertex, 0.0, 1.0), 0.0, 1.0);
+#ifdef TW_TEXTURED
+	oTexCoord = inVertexTexCoord;
+#endif
+	oVertColor = inVertexColor;
+}
--- a/data/shader/vulkan/primex.frag
+++ b/data/shader/vulkan/primex.frag
@ -0,0 +1,24 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+#ifdef TW_TEXTURED
+layout(binding = 0) uniform sampler2D gTextureSampler;
+#endif
+
+layout(push_constant) uniform SVertexColorBO {
+	layout(offset = 48) vec4 gVerticesColor;
+} gColorBO;
+
+layout (location = 0) noperspective in vec2 texCoord;
+layout (location = 1) noperspective in vec4 vertColor;
+
+layout (location = 0) out vec4 FragClr;
+void main()
+{
+#ifdef TW_TEXTURED
+	vec4 tex = texture(gTextureSampler, texCoord);
+	FragClr = tex * vertColor * gColorBO.gVerticesColor;
+#else
+	FragClr = vertColor * gColorBO.gVerticesColor;
+#endif
+}
--- a/data/shader/vulkan/primex.vert
+++ b/data/shader/vulkan/primex.vert
@ -0,0 +1,33 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout (location = 0) in vec2 inVertex;
+layout (location = 1) in vec2 inVertexTexCoord;
+layout (location = 2) in vec4 inVertexColor;
+
+layout(push_constant) uniform SPosBO {
+	layout(offset = 0) mat4x2 gPos;
+#ifndef TW_ROTATIONLESS
+	layout(offset = 32) vec2 gCenter;
+	layout(offset = 40) float gRotation;
+#endif
+} gPosBO;
+
+layout (location = 0) noperspective out vec2 texCoord;
+layout (location = 1) noperspective out vec4 vertColor;
+
+void main()
+{
+	vec2 FinalPos = vec2(inVertex.xy);
+#ifndef TW_ROTATIONLESS
+	float X = FinalPos.x - gPosBO.gCenter.x;
+	float Y = FinalPos.y - gPosBO.gCenter.y;
+	
+	FinalPos.x = X * cos(gPosBO.gRotation) - Y * sin(gPosBO.gRotation) + gPosBO.gCenter.x;
+	FinalPos.y = X * sin(gPosBO.gRotation) + Y * cos(gPosBO.gRotation) + gPosBO.gCenter.y;
+#endif
+
+	gl_Position = vec4(gPosBO.gPos * vec4(FinalPos, 0.0, 1.0), 0.0, 1.0);
+	texCoord = inVertexTexCoord;
+	vertColor = inVertexColor;
+}
--- a/data/shader/vulkan/quad.frag
+++ b/data/shader/vulkan/quad.frag
@ -0,0 +1,62 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+#ifdef TW_QUAD_TEXTURED
+layout (set = 0, binding = 0) uniform sampler2D gTextureSampler;
+#endif
+
+#ifdef TW_QUAD_TEXTURED
+#define UBOSetIndex 1
+#else
+#define UBOSetIndex 0
+#endif
+
+struct SQuadUniformEl {
+	vec4 gVertColor;
+	vec2 gOffset;
+	float gRotation;
+};
+
+#ifndef TW_PUSH_CONST
+#define TW_MAX_QUADS 256
+
+layout (std140, set = UBOSetIndex, binding = 1) uniform SOffBO {
+	uniform SQuadUniformEl gUniEls[TW_MAX_QUADS];
+} gQuadBO;
+#else
+#define gQuadBO gPosBO
+#define QuadIndex 0
+#endif
+
+layout(push_constant) uniform SPosBO {
+	layout(offset = 0) uniform mat4x2 gPos;
+#ifdef TW_PUSH_CONST
+	layout(offset = 32) uniform SQuadUniformEl gUniEls[1];
+	layout(offset = 64) uniform int gQuadOffset;
+#else
+	layout(offset = 32) uniform int gQuadOffset;
+#endif
+} gPosBO;
+
+layout (location = 0) noperspective in vec4 QuadColor;
+#ifndef TW_PUSH_CONST
+layout (location = 1) flat in int QuadIndex;
+#endif
+#ifdef TW_QUAD_TEXTURED
+#ifndef TW_PUSH_CONST
+layout (location = 2) noperspective in vec2 TexCoord;
+#else
+layout (location = 1) noperspective in vec2 TexCoord;
+#endif
+#endif
+
+layout (location = 0) out vec4 FragClr;
+void main()
+{
+#ifdef TW_QUAD_TEXTURED
+	vec4 TexColor = texture(gTextureSampler, TexCoord);
+	FragClr = TexColor * QuadColor * gQuadBO.gUniEls[QuadIndex].gVertColor;
+#else
+	FragClr = QuadColor * gQuadBO.gUniEls[QuadIndex].gVertColor;
+#endif
+}
--- a/data/shader/vulkan/quad.vert
+++ b/data/shader/vulkan/quad.vert
@ -0,0 +1,83 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout (location = 0) in vec4 inVertex;
+layout (location = 1) in vec4 inColor;
+#ifdef TW_QUAD_TEXTURED
+layout (location = 2) in vec2 inVertexTexCoord;
+#endif
+
+#ifdef TW_QUAD_TEXTURED
+#define UBOSetIndex 1
+#else
+#define UBOSetIndex 0
+#endif
+
+struct SQuadUniformEl {
+	vec4 gVertColor;
+	vec2 gOffset;
+	float gRotation;
+};
+
+#ifndef TW_PUSH_CONST
+#define TW_MAX_QUADS 256
+
+layout (std140, set = UBOSetIndex, binding = 1) uniform SOffBO {
+	uniform SQuadUniformEl gUniEls[TW_MAX_QUADS];
+} gQuadBO;
+#else
+#define gQuadBO gPosBO
+#define TmpQuadIndex 0
+#endif
+
+layout(push_constant) uniform SPosBO {
+	layout(offset = 0) uniform mat4x2 gPos;
+#ifdef TW_PUSH_CONST
+	layout(offset = 32) uniform SQuadUniformEl gUniEls[1];
+	layout(offset = 64) uniform int gQuadOffset;
+#else
+	layout(offset = 32) uniform int gQuadOffset;
+#endif
+} gPosBO;
+
+layout (location = 0) noperspective out vec4 QuadColor;
+#ifndef TW_PUSH_CONST
+layout (location = 1) flat out int QuadIndex;
+#endif
+#ifdef TW_QUAD_TEXTURED
+#ifndef TW_PUSH_CONST
+layout (location = 2) noperspective out vec2 TexCoord;
+#else
+layout (location = 1) noperspective out vec2 TexCoord;
+#endif
+#endif
+
+void main()
+{
+	vec2 FinalPos = vec2(inVertex.xy);
+
+#ifndef TW_PUSH_CONST
+	int TmpQuadIndex = int(gl_VertexIndex / 4) - gPosBO.gQuadOffset;
+#endif
+
+	if(gQuadBO.gUniEls[TmpQuadIndex].gRotation != 0.0)
+	{
+		float X = FinalPos.x - inVertex.z;
+		float Y = FinalPos.y - inVertex.w;
+		
+		FinalPos.x = X * cos(gQuadBO.gUniEls[TmpQuadIndex].gRotation) - Y * sin(gQuadBO.gUniEls[TmpQuadIndex].gRotation) + inVertex.z;
+		FinalPos.y = X * sin(gQuadBO.gUniEls[TmpQuadIndex].gRotation) + Y * cos(gQuadBO.gUniEls[TmpQuadIndex].gRotation) + inVertex.w;
+	}
+
+	FinalPos.x = FinalPos.x / 1024.0 + gQuadBO.gUniEls[TmpQuadIndex].gOffset.x;
+	FinalPos.y = FinalPos.y / 1024.0 + gQuadBO.gUniEls[TmpQuadIndex].gOffset.y;
+
+	gl_Position = vec4(gPosBO.gPos * vec4(FinalPos, 0.0, 1.0), 0.0, 1.0);
+	QuadColor = inColor;
+#ifndef TW_PUSH_CONST
+	QuadIndex = TmpQuadIndex;
+#endif
+#ifdef TW_QUAD_TEXTURED
+	TexCoord = inVertexTexCoord;
+#endif
+}
--- a/data/shader/vulkan/quadbo.vertfrag
+++ b/data/shader/vulkan/quadbo.vertfrag
@ -0,0 +1,13 @@
+
+struct SQuadUniformEl {
+	vec4 gVertColor;
+	vec2 gOffset;
+	float gRotation;
+};
+
+#define TW_MAX_QUADS 256
+
+layout (std140, set = 2, binding = 2) uniform SOffBO {
+	uniform SQuadUniformEl gUniEls[TW_MAX_QUADS];
+} gQuadBO;
+
--- a/data/shader/vulkan/spritemulti.frag
+++ b/data/shader/vulkan/spritemulti.frag
@ -0,0 +1,23 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout (set = 0, binding = 0) uniform sampler2D gTextureSampler;
+
+layout(push_constant) uniform SVertexColorBO {
+#ifdef TW_PUSH_CONST
+	layout(offset = 64) vec4 gVerticesColor;
+#else
+	layout(offset = 48) vec4 gVerticesColor;
+#endif
+} gColorBO;
+
+layout (location = 0) noperspective in vec2 texCoord;
+layout (location = 1) noperspective in vec4 vertColor;
+
+layout (location = 0) out vec4 FragClr;
+
+void main()
+{
+	vec4 tex = texture(gTextureSampler, texCoord);
+	FragClr = tex * vertColor * gColorBO.gVerticesColor;
+}
--- a/data/shader/vulkan/spritemulti.vert
+++ b/data/shader/vulkan/spritemulti.vert
@ -0,0 +1,50 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout (location = 0) in vec2 inVertex;
+layout (location = 1) in vec2 inVertexTexCoord;
+layout (location = 2) in vec4 inVertexColor;
+
+layout(push_constant) uniform SPosBO {
+	layout(offset = 0) uniform mat4x2 gPos;
+	layout(offset = 32) uniform vec2 gCenter;
+#ifdef TW_PUSH_CONST
+	layout(offset = 48) uniform vec4 gRSP[1];
+#endif
+} gPosBO;
+
+#ifndef TW_PUSH_CONST
+layout (std140, set = 1, binding = 1) uniform SRSPBO {
+	vec4 gRSP[512];
+} gRSPBO;
+#define RSPIndex gl_InstanceIndex
+#else
+#define gRSPBO gPosBO
+#define RSPIndex 0
+#endif
+
+layout (location = 0) noperspective out vec2 texCoord;
+layout (location = 1) noperspective out vec4 vertColor;
+
+void main()
+{
+	vec2 FinalPos = vec2(inVertex.xy);
+	if(gRSPBO.gRSP[RSPIndex].w != 0.0)
+	{
+		float X = FinalPos.x - gPosBO.gCenter.x;
+		float Y = FinalPos.y - gPosBO.gCenter.y;
+		
+		FinalPos.x = X * cos(gRSPBO.gRSP[RSPIndex].w) - Y * sin(gRSPBO.gRSP[RSPIndex].w) + gPosBO.gCenter.x;
+		FinalPos.y = X * sin(gRSPBO.gRSP[RSPIndex].w) + Y * cos(gRSPBO.gRSP[RSPIndex].w) + gPosBO.gCenter.y;
+	}
+	
+	FinalPos.x *= gRSPBO.gRSP[RSPIndex].z;
+	FinalPos.y *= gRSPBO.gRSP[RSPIndex].z;
+
+	FinalPos.x += gRSPBO.gRSP[RSPIndex].x;
+	FinalPos.y += gRSPBO.gRSP[RSPIndex].y;
+
+	gl_Position = vec4(gPosBO.gPos * vec4(FinalPos, 0.0, 1.0), 0.0, 1.0);
+	texCoord = inVertexTexCoord;
+	vertColor = inVertexColor;
+}
--- a/data/shader/vulkan/text.frag
+++ b/data/shader/vulkan/text.frag
@ -0,0 +1,43 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout(binding = 0) uniform sampler2D gTextSampler;
+layout(binding = 1) uniform sampler2D gTextOutlineSampler;
+
+layout(push_constant) uniform SFragConstBO {
+	layout(offset = 48) uniform vec4 gVertColor;
+	layout(offset = 64) uniform vec4 gVertOutlineColor;
+} gFragConst;
+
+layout (location = 0) noperspective in vec2 texCoord;
+layout (location = 1) noperspective in vec4 outVertColor;
+
+layout(location = 0) out vec4 FragClr;
+
+void main()
+{
+	vec4 textColor = gFragConst.gVertColor * outVertColor * vec4(1.0, 1.0, 1.0, texture(gTextSampler, texCoord).r);
+	vec4 textOutlineTex = gFragConst.gVertOutlineColor * vec4(1.0, 1.0, 1.0, texture(gTextOutlineSampler, texCoord).r);
+
+	// ratio between the two textures
+	float OutlineBlend = (1.0 - textColor.a);
+
+	// since the outline is always black, or even if it has decent colors, it can be just added to the actual color
+	// without loosing any or too much color
+	
+	// lerp isn't commutative, so add the color the fragment looses by lerping
+	// this reduces the chance of false color calculation if the text is transparent
+	
+	// first get the right color
+	vec4 textOutlineFrag = vec4(textOutlineTex.rgb * textOutlineTex.a, textOutlineTex.a) * OutlineBlend;
+	vec3 textFrag = (textColor.rgb * textColor.a);
+	vec3 finalFragColor = textOutlineFrag.rgb + textFrag;
+	
+	float RealAlpha = (textOutlineFrag.a + textColor.a);
+	
+	// simply add the color we will loose through blending
+	if(RealAlpha > 0.0)
+		FragClr = vec4(finalFragColor / RealAlpha, RealAlpha);
+	else
+		FragClr = vec4(0.0, 0.0, 0.0, 0.0);
+}
--- a/data/shader/vulkan/text.vert
+++ b/data/shader/vulkan/text.vert
@ -0,0 +1,22 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout (location = 0) in vec2 inVertex;
+layout (location = 1) in vec2 inVertexTexCoord;
+layout (location = 2) in vec4 inVertexColor;
+
+layout(push_constant) uniform SPosBO {
+	layout(offset = 0) mat4x2 gPos;
+	layout(offset = 32) float gTextureSize;
+} gPosBO;
+
+layout (location = 0) noperspective out vec2 texCoord;
+layout (location = 1) noperspective out vec4 outVertColor;
+
+void main()
+{
+	gl_Position = vec4(gPosBO.gPos * vec4(inVertex, 0.0, 1.0), 0.0, 1.0);
+
+	texCoord = vec2(inVertexTexCoord.x / gPosBO.gTextureSize, inVertexTexCoord.y / gPosBO.gTextureSize);
+	outVertColor = inVertexColor;
+}
--- a/data/shader/vulkan/tile.frag
+++ b/data/shader/vulkan/tile.frag
@ -0,0 +1,25 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+#ifdef TW_TILE_TEXTURED
+layout(binding = 0) uniform sampler2DArray gTextureSampler;
+#endif
+
+layout(push_constant) uniform SVertexColorBO {
+	layout(offset = 64) uniform vec4 gVertColor;
+} gColorBO;
+
+#ifdef TW_TILE_TEXTURED
+layout (location = 0) noperspective in vec3 TexCoord;
+#endif
+
+layout (location = 0) out vec4 FragClr;
+void main()
+{
+#ifdef TW_TILE_TEXTURED
+	vec4 TexColor = texture(gTextureSampler, TexCoord.xyz);
+	FragClr = TexColor * gColorBO.gVertColor;
+#else
+	FragClr = gColorBO.gVertColor;
+#endif
+}
--- a/data/shader/vulkan/tile.vert
+++ b/data/shader/vulkan/tile.vert
@ -0,0 +1,49 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout (location = 0) in vec2 inVertex;
+#ifdef TW_TILE_TEXTURED
+layout (location = 1) in vec3 inVertexTexCoord;
+#endif
+
+layout(push_constant) uniform SPosBO {
+	layout(offset = 0) uniform mat4x2 gPos;
+
+#if defined(TW_TILE_BORDER) || defined(TW_TILE_BORDER_LINE)
+	layout(offset = 32) uniform vec2 gDir;
+	layout(offset = 40) uniform vec2 gOffset;
+#endif
+
+#if defined(TW_TILE_BORDER)
+	layout(offset = 48) uniform int gJumpIndex;
+#endif
+} gPosBO;
+
+#ifdef TW_TILE_TEXTURED
+layout (location = 0) noperspective out vec3 TexCoord;
+#endif
+
+void main()
+{
+#if defined(TW_TILE_BORDER)
+	vec4 VertPos = vec4(inVertex, 0.0, 1.0);
+	int XCount = gl_InstanceIndex - (int(gl_InstanceIndex/gPosBO.gJumpIndex) * gPosBO.gJumpIndex);
+	int YCount = (int(gl_InstanceIndex/gPosBO.gJumpIndex));
+	VertPos.x += gPosBO.gOffset.x + gPosBO.gDir.x * float(XCount);
+	VertPos.y += gPosBO.gOffset.y + gPosBO.gDir.y * float(YCount);
+		
+	gl_Position = vec4(gPosBO.gPos * VertPos, 0.0, 1.0);
+#elif defined(TW_TILE_BORDER_LINE)
+	vec4 VertPos = vec4(inVertex.x + gPosBO.gOffset.x, inVertex.y + gPosBO.gOffset.y, 0.0, 1.0);
+	VertPos.x += gPosBO.gDir.x * float(gl_InstanceIndex);
+	VertPos.y += gPosBO.gDir.y * float(gl_InstanceIndex);
+		
+	gl_Position = vec4(gPosBO.gPos * VertPos, 0.0, 1.0);
+#else
+	gl_Position = vec4(gPosBO.gPos * vec4(inVertex, 0.0, 1.0), 0.0, 1.0);
+#endif
+
+#ifdef TW_TILE_TEXTURED
+	TexCoord = inVertexTexCoord;
+#endif
+}
--- a/scripts/android/cmake_android.sh
+++ b/scripts/android/cmake_android.sh
@ -104,7 +104,8 @@ function build_for_type() {
 		-DTOOLS=OFF \
 		-DDEV=TRUE \
 		-DCMAKE_CROSSCOMPILING=ON \
-		-DPREFER_BUNDLED_LIBS=ON
+		-DPREFER_BUNDLED_LIBS=ON \
+		-DVULKAN=ON
 	(
 		cd "build_android/$_ANDROID_SUB_BUILD_DIR/$1" || exit 1
 		cmake --build . --target DDNet
--- a/src/engine/client/backend/backend_base.h
+++ b/src/engine/client/backend/backend_base.h
@ -29,7 +29,7 @@ public:
 	virtual ~CCommandProcessorFragment_GLBase() = default;
 	virtual bool RunCommand(const CCommandBuffer::SCommand *pBaseCommand) = 0;

-	virtual void StartCommands(size_t CommandCount) {}
+	virtual void StartCommands(size_t CommandCount, size_t EstimatedRenderCallCount) {}
 	virtual void EndCommands() {}

 	enum
--- a/src/engine/client/backend/opengl/backend_opengl.cpp
+++ b/src/engine/client/backend/opengl/backend_opengl.cpp
@ -1005,8 +1005,10 @@ void CCommandProcessorFragment_OpenGL::Cmd_Render(const CCommandBuffer::SCommand
 #endif
 }

-void CCommandProcessorFragment_OpenGL::Cmd_Screenshot(const CCommandBuffer::SCommand_Screenshot *pCommand)
+void CCommandProcessorFragment_OpenGL::Cmd_Screenshot(const CCommandBuffer::SCommand_TrySwapAndScreenshot *pCommand)
 {
+	*pCommand->m_pSwapped = false;
+
 	// fetch image data
 	GLint aViewport[4] = {0, 0, 0, 0};
 	glGetIntegerv(GL_VIEWPORT, aViewport);
@ -1088,8 +1090,8 @@ bool CCommandProcessorFragment_OpenGL::RunCommand(const CCommandBuffer::SCommand
 	case CCommandBuffer::CMD_RENDER_TEX3D:
 		Cmd_RenderTex3D(static_cast<const CCommandBuffer::SCommand_RenderTex3D *>(pBaseCommand));
 		break;
-	case CCommandBuffer::CMD_SCREENSHOT:
-		Cmd_Screenshot(static_cast<const CCommandBuffer::SCommand_Screenshot *>(pBaseCommand));
+	case CCommandBuffer::CMD_TRY_SWAP_AND_SCREENSHOT:
+		Cmd_Screenshot(static_cast<const CCommandBuffer::SCommand_TrySwapAndScreenshot *>(pBaseCommand));
 		break;
 	case CCommandBuffer::CMD_UPDATE_VIEWPORT:
 		Cmd_Update_Viewport(static_cast<const CCommandBuffer::SCommand_Update_Viewport *>(pBaseCommand));
@ -1971,6 +1973,7 @@ void CCommandProcessorFragment_OpenGL2::Cmd_CreateBufferContainer(const CCommand
 		{
 			SBufferContainer Container;
 			Container.m_ContainerInfo.m_Stride = 0;
+			Container.m_ContainerInfo.m_VertBufferBindingIndex = -1;
 			m_BufferContainers.push_back(Container);
 		}
 	}
--- a/src/engine/client/backend/opengl/backend_opengl.h
+++ b/src/engine/client/backend/opengl/backend_opengl.h
@ -103,7 +103,7 @@ protected:
 	virtual void Cmd_Clear(const CCommandBuffer::SCommand_Clear *pCommand);
 	virtual void Cmd_Render(const CCommandBuffer::SCommand_Render *pCommand);
 	virtual void Cmd_RenderTex3D(const CCommandBuffer::SCommand_RenderTex3D *pCommand) { dbg_assert(false, "Call of unsupported Cmd_RenderTex3D"); }
-	virtual void Cmd_Screenshot(const CCommandBuffer::SCommand_Screenshot *pCommand);
+	virtual void Cmd_Screenshot(const CCommandBuffer::SCommand_TrySwapAndScreenshot *pCommand);

 	virtual void Cmd_Update_Viewport(const CCommandBuffer::SCommand_Update_Viewport *pCommand);
 	virtual void Cmd_Finish(const CCommandBuffer::SCommand_Finish *pCommand);
@ -139,7 +139,6 @@ class CCommandProcessorFragment_OpenGL2 : public CCommandProcessorFragment_OpenG
 {
 	struct SBufferContainer
 	{
-		SBufferContainer() {}
 		SBufferContainerInfo m_ContainerInfo;
 	};
 	std::vector<SBufferContainer> m_BufferContainers;
--- a/src/engine/client/backend/opengl/backend_opengl3.cpp
+++ b/src/engine/client/backend/opengl/backend_opengl3.cpp
@ -1042,6 +1042,7 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_CreateBufferContainer(const CComma
 		{
 			SBufferContainer Container;
 			Container.m_ContainerInfo.m_Stride = 0;
+			Container.m_ContainerInfo.m_VertBufferBindingIndex = -1;
 			m_BufferContainers.push_back(Container);
 		}
 	}
--- a/src/engine/client/backend/vulkan/backend_vulkan.cpp
+++ b/src/engine/client/backend/vulkan/backend_vulkan.cpp
--- a/src/engine/client/backend/vulkan/backend_vulkan.h
+++ b/src/engine/client/backend/vulkan/backend_vulkan.h
@ -0,0 +1,12 @@
+#ifndef ENGINE_CLIENT_BACKEND_VULKAN_BACKEND_VULKAN_H
+#define ENGINE_CLIENT_BACKEND_VULKAN_BACKEND_VULKAN_H
+
+#include <base/detect.h>
+#include <engine/client/backend_sdl.h>
+
+static constexpr int gs_BackendVulkanMajor = 1;
+static constexpr int gs_BackendVulkanMinor = 0;
+
+CCommandProcessorFragment_GLBase *CreateVulkanCommandProcessorFragment();
+
+#endif
--- a/src/engine/client/backend_sdl.cpp
+++ b/src/engine/client/backend_sdl.cpp
@ -68,10 +68,10 @@ void CGraphicsBackend_Threaded::ThreadFunc(void *pUser)
 	std::unique_lock<std::mutex> Lock(pSelf->m_BufferSwapMutex);
 	// notify, that the thread started
 	pSelf->m_Started = true;
-	pSelf->m_BufferDoneCond.notify_all();
+	pSelf->m_BufferSwapCond.notify_all();
 	while(!pSelf->m_Shutdown)
 	{
-		pSelf->m_BufferSwapCond.wait(Lock);
+		pSelf->m_BufferSwapCond.wait(Lock, [&pSelf] { return pSelf->m_pBuffer != nullptr || pSelf->m_Shutdown; });
 		if(pSelf->m_pBuffer)
 		{
 #ifdef CONF_PLATFORM_MACOS
@ -81,7 +81,7 @@ void CGraphicsBackend_Threaded::ThreadFunc(void *pUser)

 			pSelf->m_pBuffer = nullptr;
 			pSelf->m_BufferInProcess.store(false, std::memory_order_relaxed);
-			pSelf->m_BufferDoneCond.notify_all();
+			pSelf->m_BufferSwapCond.notify_all();

 #if defined(CONF_VIDEORECORDER)
 			if(IVideo::Current())
@ -100,16 +100,18 @@ CGraphicsBackend_Threaded::CGraphicsBackend_Threaded()

 void CGraphicsBackend_Threaded::StartProcessor(ICommandProcessor *pProcessor)
 {
+	dbg_assert(m_Shutdown, "Processor was already not shut down.");
 	m_Shutdown = false;
 	m_pProcessor = pProcessor;
 	std::unique_lock<std::mutex> Lock(m_BufferSwapMutex);
 	m_Thread = thread_init(ThreadFunc, this, "Graphics thread");
 	// wait for the thread to start
-	m_BufferDoneCond.wait(Lock, [this]() -> bool { return m_Started; });
+	m_BufferSwapCond.wait(Lock, [this]() -> bool { return m_Started; });
 }

 void CGraphicsBackend_Threaded::StopProcessor()
 {
+	dbg_assert(!m_Shutdown, "Processor was already shut down.");
 	m_Shutdown = true;
 	{
 		std::unique_lock<std::mutex> Lock(m_BufferSwapMutex);
@ -140,8 +142,7 @@ bool CGraphicsBackend_Threaded::IsIdle() const
 void CGraphicsBackend_Threaded::WaitForIdle()
 {
 	std::unique_lock<std::mutex> Lock(m_BufferSwapMutex);
-	while(m_pBuffer != nullptr)
-		m_BufferDoneCond.wait(Lock);
+	m_BufferSwapCond.wait(Lock, [this]() { return m_pBuffer == nullptr; });
 }

 // ------------ CCommandProcessorFragment_General
@ -236,7 +237,7 @@ bool CCommandProcessorFragment_SDL::RunCommand(const CCommandBuffer::SCommand *p

 void CCommandProcessor_SDL_GL::RunBuffer(CCommandBuffer *pBuffer)
 {
-	m_pGLBackend->StartCommands(pBuffer->m_CommandCount);
+	m_pGLBackend->StartCommands(pBuffer->m_CommandCount, pBuffer->m_RenderCallCount);

 	for(CCommandBuffer::SCommand *pCommand = pBuffer->Head(); pCommand; pCommand = pCommand->m_pNext)
 	{
@ -560,10 +561,8 @@ static int IsVersionSupportedGlew(EBackendType BackendType, int VersionMajor, in

 EBackendType CGraphicsBackend_SDL_GL::DetectBackend()
 {
-	// TODO
-	return BACKEND_TYPE_VULKAN;
 	EBackendType RetBackendType = BACKEND_TYPE_OPENGL;
-	const char *pEnvDriver = getenv("DDNET_DRIVER");
+	const char *pEnvDriver = SDL_getenv("DDNET_DRIVER");
 	if(pEnvDriver && str_comp_nocase(pEnvDriver, "GLES") == 0)
 		RetBackendType = BACKEND_TYPE_OPENGL_ES;
 	else if(pEnvDriver && str_comp_nocase(pEnvDriver, "Vulkan") == 0)
@ -581,9 +580,15 @@ EBackendType CGraphicsBackend_SDL_GL::DetectBackend()
 		else if(str_comp_nocase(pConfBackend, "OpenGL") == 0)
 			RetBackendType = BACKEND_TYPE_OPENGL;
 	}
+#if !defined(CONF_BACKEND_VULKAN)
+	RetBackendType = BACKEND_TYPE_OPENGL;
+#endif
 #if !defined(CONF_BACKEND_OPENGL_ES) && !defined(CONF_BACKEND_OPENGL_ES3)
 	if(RetBackendType == BACKEND_TYPE_OPENGL_ES)
 		RetBackendType = BACKEND_TYPE_OPENGL;
+#elif defined(CONF_BACKEND_OPENGL_ES)
+	if(RetBackendType == BACKEND_TYPE_OPENGL)
+		RetBackendType = BACKEND_TYPE_OPENGL_ES;
 #endif
 	return RetBackendType;
 }
@ -635,9 +640,11 @@ void CGraphicsBackend_SDL_GL::ClampDriverVersion(EBackendType BackendType)
 	}
 	else if(BackendType == BACKEND_TYPE_VULKAN)
 	{
-		g_Config.m_GfxGLMajor = 1;
-		g_Config.m_GfxGLMinor = 1;
+#if defined(CONF_BACKEND_VULKAN)
+		g_Config.m_GfxGLMajor = gs_BackendVulkanMajor;
+		g_Config.m_GfxGLMinor = gs_BackendVulkanMinor;
 		g_Config.m_GfxGLPatch = 0;
+#endif
 	}
 }

@ -653,50 +660,81 @@ bool CGraphicsBackend_SDL_GL::IsModernAPI(EBackendType BackendType)
 	return false;
 }

-void CGraphicsBackend_SDL_GL::GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch)
+bool CGraphicsBackend_SDL_GL::GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch, const char *&pName, EBackendType BackendType)
 {
-	if(m_BackendType == BACKEND_TYPE_OPENGL)
+	if(BackendType == BACKEND_TYPE_AUTO)
+		BackendType = m_BackendType;
+	if(BackendType == BACKEND_TYPE_OPENGL)
 	{
+		pName = "OpenGL";
 		if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_LEGACY)
 		{
 			Major = 1;
 			Minor = 4;
 			Patch = 0;
+			return true;
 		}
 		else if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_DEFAULT)
 		{
 			Major = 3;
 			Minor = 0;
 			Patch = 0;
+			return true;
 		}
 		else if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_MODERN)
 		{
 			Major = 3;
 			Minor = 3;
 			Patch = 0;
+			return true;
 		}
 	}
-	else if(m_BackendType == BACKEND_TYPE_OPENGL_ES)
+	else if(BackendType == BACKEND_TYPE_OPENGL_ES)
 	{
+		pName = "GLES";
+#ifdef CONF_BACKEND_OPENGL_ES
 		if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_LEGACY)
 		{
 			Major = 1;
 			Minor = 0;
 			Patch = 0;
+			return true;
 		}
 		else if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_DEFAULT)
 		{
 			Major = 3;
 			Minor = 0;
 			Patch = 0;
+			// there isn't really a default one
+			return false;
 		}
-		else if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_MODERN)
+#endif
+#ifdef CONF_BACKEND_OPENGL_ES3
+		if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_MODERN)
 		{
 			Major = 3;
 			Minor = 0;
 			Patch = 0;
+			return true;
 		}
+#endif
 	}
+	else if(BackendType == BACKEND_TYPE_VULKAN)
+	{
+		pName = "Vulkan";
+#ifdef CONF_BACKEND_VULKAN
+		if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_DEFAULT)
+		{
+			Major = gs_BackendVulkanMajor;
+			Minor = gs_BackendVulkanMinor;
+			Patch = 0;
+			return true;
+		}
+#else
+		return false;
+#endif
+	}
+	return false;
 }

 static void DisplayToVideoMode(CVideoMode *pVMode, SDL_DisplayMode *pMode, int HiDPIScale, int RefreshRate)
@ -830,12 +868,19 @@ int CGraphicsBackend_SDL_GL::Init(const char *pName, int *pScreen, int *pWidth,
 			dbg_msg("gfx", "unable to init SDL video: %s", SDL_GetError());
 			return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_SDL_INIT_FAILED;
 		}
-#if defined(CONF_FAMILY_WINDOWS) && defined(CONF_BACKEND_VULKAN)
-		SDL_Vulkan_LoadLibrary("libvulkan-1.dll");
-#endif
 	}

+	EBackendType OldBackendType = m_BackendType;
 	m_BackendType = DetectBackend();
+	// little fallback for Vulkan
+	if(OldBackendType != BACKEND_TYPE_AUTO)
+	{
+		if(m_BackendType == BACKEND_TYPE_VULKAN)
+		{
+			SDL_setenv("DDNET_DRIVER", "OpenGL", 1);
+			m_BackendType = DetectBackend();
+		}
+	}

 	ClampDriverVersion(m_BackendType);

@ -918,7 +963,7 @@ int CGraphicsBackend_SDL_GL::Init(const char *pName, int *pScreen, int *pWidth,

 	// set flags
 	int SdlFlags = SDL_WINDOW_INPUT_GRABBED | SDL_WINDOW_INPUT_FOCUS | SDL_WINDOW_MOUSE_FOCUS;
-	SdlFlags |= (m_BackendType == BACKEND_TYPE_OPENGL || m_BackendType == BACKEND_TYPE_OPENGL_ES) ? SDL_WINDOW_OPENGL : SDL_WINDOW_VULKAN;
+	SdlFlags |= (IsOpenGLFamilyBackend) ? SDL_WINDOW_OPENGL : SDL_WINDOW_VULKAN;
 	if(Flags & IGraphicsBackend::INITFLAG_HIGHDPI)
 		SdlFlags |= SDL_WINDOW_ALLOW_HIGHDPI;
 	if(Flags & IGraphicsBackend::INITFLAG_RESIZABLE)
@ -981,7 +1026,10 @@ int CGraphicsBackend_SDL_GL::Init(const char *pName, int *pScreen, int *pWidth,
 	if(m_pWindow == NULL)
 	{
 		dbg_msg("gfx", "unable to create window: %s", SDL_GetError());
-		return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_SDL_WINDOW_CREATE_FAILED;
+		if(m_BackendType == BACKEND_TYPE_VULKAN)
+			return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_GL_CONTEXT_FAILED;
+		else
+			return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_SDL_WINDOW_CREATE_FAILED;
 	}

 	int GlewMajor = 0;
@ -1013,7 +1061,7 @@ int CGraphicsBackend_SDL_GL::Init(const char *pName, int *pScreen, int *pWidth,
 	InitError = IsVersionSupportedGlew(m_BackendType, g_Config.m_GfxGLMajor, g_Config.m_GfxGLMinor, g_Config.m_GfxGLPatch, GlewMajor, GlewMinor, GlewPatch);

 	// SDL_GL_GetDrawableSize reports HiDPI resolution even with SDL_WINDOW_ALLOW_HIGHDPI not set, which is wrong
-	if(SdlFlags & SDL_WINDOW_ALLOW_HIGHDPI)
+	if(SdlFlags & SDL_WINDOW_ALLOW_HIGHDPI && IsOpenGLFamilyBackend)
 		SDL_GL_GetDrawableSize(m_pWindow, pCurrentWidth, pCurrentHeight);
 	else
 		SDL_GetWindowSize(m_pWindow, pCurrentWidth, pCurrentHeight);
@ -1039,6 +1087,7 @@ int CGraphicsBackend_SDL_GL::Init(const char *pName, int *pScreen, int *pWidth,
 	}

 	// start the command processor
+	dbg_assert(m_pProcessor == nullptr, "Processor was not cleaned up properly.");
 	m_pProcessor = new CCommandProcessor_SDL_GL(m_BackendType, g_Config.m_GfxGLMajor, g_Config.m_GfxGLMinor, g_Config.m_GfxGLPatch);
 	StartProcessor(m_pProcessor);

@ -1124,7 +1173,7 @@ int CGraphicsBackend_SDL_GL::Init(const char *pName, int *pScreen, int *pWidth,
 		// stop and delete the processor
 		StopProcessor();
 		delete m_pProcessor;
-		m_pProcessor = 0;
+		m_pProcessor = nullptr;

 		if(m_GLContext)
 			SDL_GL_DeleteContext(m_GLContext);
@ -1188,7 +1237,7 @@ int CGraphicsBackend_SDL_GL::Shutdown()
 	// stop and delete the processor
 	StopProcessor();
 	delete m_pProcessor;
-	m_pProcessor = 0;
+	m_pProcessor = nullptr;

 	SDL_GL_DeleteContext(m_GLContext);
 	SDL_DestroyWindow(m_pWindow);
--- a/src/engine/client/backend_sdl.h
+++ b/src/engine/client/backend_sdl.h
@ -5,6 +5,7 @@

 #include <base/detect.h>

+#include "engine/graphics.h"
 #include "graphics_defines.h"

 #include "blocklist_driver.h"
@ -70,9 +71,8 @@ private:
 	ICommandProcessor *m_pProcessor;
 	std::mutex m_BufferSwapMutex;
 	std::condition_variable m_BufferSwapCond;
-	std::condition_variable m_BufferDoneCond;
 	CCommandBuffer *m_pBuffer;
-	std::atomic_bool m_Shutdown;
+	std::atomic_bool m_Shutdown = true;
 	bool m_Started = false;
 	std::atomic_bool m_BufferInProcess;
 	void *m_Thread;
@ -90,13 +90,6 @@ public:
 	bool RunCommand(const CCommandBuffer::SCommand *pBaseCommand);
 };

-enum EBackendType
-{
-	BACKEND_TYPE_OPENGL = 0,
-	BACKEND_TYPE_OPENGL_ES,
-	BACKEND_TYPE_VULKAN,
-};
-
 struct SBackendCapabilites
 {
 	bool m_TileBuffering;
@ -183,7 +176,7 @@ class CGraphicsBackend_SDL_GL : public CGraphicsBackend_Threaded
 {
 	SDL_Window *m_pWindow = NULL;
 	SDL_GLContext m_GLContext;
-	ICommandProcessor *m_pProcessor;
+	ICommandProcessor *m_pProcessor = nullptr;
 	std::atomic<uint64_t> m_TextureMemoryUsage{0};
 	std::atomic<uint64_t> m_BufferMemoryUsage{0};
 	std::atomic<uint64_t> m_StreamMemoryUsage{0};
@ -201,7 +194,7 @@ class CGraphicsBackend_SDL_GL : public CGraphicsBackend_Threaded
 	char m_aVersionString[gs_GPUInfoStringSize] = {};
 	char m_aRendererString[gs_GPUInfoStringSize] = {};

-	EBackendType m_BackendType;
+	EBackendType m_BackendType = BACKEND_TYPE_AUTO;

 	char m_aErrorString[256];

@ -241,7 +234,7 @@ public:
 	virtual void WindowDestroyNtf(uint32_t WindowID);
 	virtual void WindowCreateNtf(uint32_t WindowID);

-	virtual void GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch);
+	virtual bool GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch, const char *&pName, EBackendType BackendType);
 	virtual bool IsConfigModernAPI() { return IsModernAPI(m_BackendType); }
 	virtual bool UseTrianglesAsQuad() { return m_Capabilites.m_TrianglesAsQuads; }
 	virtual bool HasTileBuffering() { return m_Capabilites.m_TileBuffering; }
--- a/src/engine/client/graphics_threaded.cpp
+++ b/src/engine/client/graphics_threaded.cpp
@ -496,7 +496,7 @@ IGraphics::CTextureHandle CGraphics_Threaded::LoadTextureRaw(int Width, int Heig
 	void *pTmpData = malloc(MemSize);
 	if(!ConvertToRGBA((uint8_t *)pTmpData, (const uint8_t *)pData, Width, Height, Format))
 	{
-		dbg_msg("graphics", "converted image %s to RGBA, consider making its file format using RGBA", pTexName);
+		dbg_msg("graphics", "converted image %s to RGBA, consider making its file format RGBA", pTexName);
 	}
 	Cmd.m_pData = pTmpData;

@ -624,7 +624,7 @@ bool CGraphics_Threaded::UpdateTextTexture(CTextureHandle TextureID, int x, int

 	AddCmd(
 		Cmd, [] { return true; }, "failed to update text texture.");
-	return 0;
+	return true;
 }

 int CGraphics_Threaded::LoadPNG(CImageInfo *pImg, const char *pFilename, int StorageType)
@ -739,7 +739,7 @@ bool CGraphics_Threaded::CheckImageDivisibility(const char *pFileName, CImageInf

 bool CGraphics_Threaded::IsImageFormatRGBA(const char *pFileName, CImageInfo &Img)
 {
-	if(Img.m_Format != CImageInfo::FORMAT_RGBA && Img.m_Format != CImageInfo::FORMAT_ALPHA)
+	if(Img.m_Format != CImageInfo::FORMAT_RGBA)
 	{
 		SWarning NewWarning;
 		char aText[128];
@ -787,14 +787,17 @@ void CGraphics_Threaded::KickCommandBuffer()
 	m_pCommandBuffer->Reset();
 }

-void CGraphics_Threaded::ScreenshotDirect()
+bool CGraphics_Threaded::ScreenshotDirect()
 {
 	// add swap command
 	CImageInfo Image;
 	mem_zero(&Image, sizeof(Image));

-	CCommandBuffer::SCommand_Screenshot Cmd;
+	bool DidSwap = false;
+
+	CCommandBuffer::SCommand_TrySwapAndScreenshot Cmd;
 	Cmd.m_pImage = &Image;
+	Cmd.m_pSwapped = &DidSwap;
 	AddCmd(
 		Cmd, [] { return true; }, "failed to take screenshot.");

@ -826,6 +829,8 @@ void CGraphics_Threaded::ScreenshotDirect()

 		free(Image.m_pData);
 	}
+
+	return DidSwap;
 }

 void CGraphics_Threaded::TextureSet(CTextureHandle TextureID)
@ -834,13 +839,14 @@ void CGraphics_Threaded::TextureSet(CTextureHandle TextureID)
 	m_State.m_Texture = TextureID.Id();
 }

-void CGraphics_Threaded::Clear(float r, float g, float b)
+void CGraphics_Threaded::Clear(float r, float g, float b, bool ForceClearNow)
 {
 	CCommandBuffer::SCommand_Clear Cmd;
 	Cmd.m_Color.r = r;
 	Cmd.m_Color.g = g;
 	Cmd.m_Color.b = b;
 	Cmd.m_Color.a = 0;
+	Cmd.m_ForceClear = ForceClearNow || m_IsForcedViewport;
 	AddCmd(
 		Cmd, [] { return true; }, "failed to clear graphics.");
 }
@ -1218,25 +1224,25 @@ void CGraphics_Threaded::QuadsText(float x, float y, float Size, const char *pTe
 	}
 }

-void CGraphics_Threaded::RenderTileLayer(int BufferContainerIndex, float *pColor, char **pOffsets, unsigned int *IndicedVertexDrawNum, size_t NumIndicesOffet)
+void CGraphics_Threaded::RenderTileLayer(int BufferContainerIndex, float *pColor, char **pOffsets, unsigned int *IndicedVertexDrawNum, size_t NumIndicesOffset)
 {
-	if(NumIndicesOffet == 0)
+	if(NumIndicesOffset == 0)
 		return;

 	// add the VertexArrays and draw
 	CCommandBuffer::SCommand_RenderTileLayer Cmd;
 	Cmd.m_State = m_State;
-	Cmd.m_IndicesDrawNum = NumIndicesOffet;
+	Cmd.m_IndicesDrawNum = NumIndicesOffset;
 	Cmd.m_BufferContainerIndex = BufferContainerIndex;
 	mem_copy(&Cmd.m_Color, pColor, sizeof(Cmd.m_Color));

-	void *Data = m_pCommandBuffer->AllocData((sizeof(char *) + sizeof(unsigned int)) * NumIndicesOffet);
+	void *Data = m_pCommandBuffer->AllocData((sizeof(char *) + sizeof(unsigned int)) * NumIndicesOffset);
 	if(Data == 0x0)
 	{
 		// kick command buffer and try again
 		KickCommandBuffer();

-		Data = m_pCommandBuffer->AllocData((sizeof(char *) + sizeof(unsigned int)) * NumIndicesOffet);
+		Data = m_pCommandBuffer->AllocData((sizeof(char *) + sizeof(unsigned int)) * NumIndicesOffset);
 		if(Data == 0x0)
 		{
 			dbg_msg("graphics", "failed to allocate data for vertices");
@ -1244,18 +1250,18 @@ void CGraphics_Threaded::RenderTileLayer(int BufferContainerIndex, float *pColor
 		}
 	}
 	Cmd.m_pIndicesOffsets = (char **)Data;
-	Cmd.m_pDrawCount = (unsigned int *)(((char *)Data) + (sizeof(char *) * NumIndicesOffet));
+	Cmd.m_pDrawCount = (unsigned int *)(((char *)Data) + (sizeof(char *) * NumIndicesOffset));

 	if(!AddCmd(
 		   Cmd, [&] {
-			   Data = m_pCommandBuffer->AllocData((sizeof(char *) + sizeof(unsigned int)) * NumIndicesOffet);
+			   Data = m_pCommandBuffer->AllocData((sizeof(char *) + sizeof(unsigned int)) * NumIndicesOffset);
 			   if(Data == 0x0)
 			   {
 				   dbg_msg("graphics", "failed to allocate data for vertices");
 				   return false;
 			   }
 			   Cmd.m_pIndicesOffsets = (char **)Data;
-			   Cmd.m_pDrawCount = (unsigned int *)(((char *)Data) + (sizeof(char *) * NumIndicesOffet));
+			   Cmd.m_pDrawCount = (unsigned int *)(((char *)Data) + (sizeof(char *) * NumIndicesOffset));
 			   return true;
 		   },
 		   "failed to allocate memory for render command"))
@ -1263,9 +1269,10 @@ void CGraphics_Threaded::RenderTileLayer(int BufferContainerIndex, float *pColor
 		return;
 	}

-	mem_copy(Cmd.m_pIndicesOffsets, pOffsets, sizeof(char *) * NumIndicesOffet);
-	mem_copy(Cmd.m_pDrawCount, IndicedVertexDrawNum, sizeof(unsigned int) * NumIndicesOffet);
+	mem_copy(Cmd.m_pIndicesOffsets, pOffsets, sizeof(char *) * NumIndicesOffset);
+	mem_copy(Cmd.m_pDrawCount, IndicedVertexDrawNum, sizeof(unsigned int) * NumIndicesOffset);

+	m_pCommandBuffer->AddRenderCalls(NumIndicesOffset);
 	// todo max indices group check!!
 }

@ -1294,6 +1301,8 @@ void CGraphics_Threaded::RenderBorderTiles(int BufferContainerIndex, float *pCol
 	{
 		return;
 	}
+
+	m_pCommandBuffer->AddRenderCalls(1);
 }

 void CGraphics_Threaded::RenderBorderTileLines(int BufferContainerIndex, float *pColor, char *pIndexBufferOffset, float *pOffset, float *pDir, unsigned int IndexDrawNum, unsigned int RedrawNum)
@ -1321,6 +1330,8 @@ void CGraphics_Threaded::RenderBorderTileLines(int BufferContainerIndex, float *
 	{
 		return;
 	}
+
+	m_pCommandBuffer->AddRenderCalls(1);
 }

 void CGraphics_Threaded::RenderQuadLayer(int BufferContainerIndex, SQuadRenderInfo *pQuadInfo, int QuadNum, int QuadOffset)
@ -1356,6 +1367,8 @@ void CGraphics_Threaded::RenderQuadLayer(int BufferContainerIndex, SQuadRenderIn
 	}

 	mem_copy(Cmd.m_pQuadInfo, pQuadInfo, sizeof(SQuadRenderInfo) * QuadNum);
+
+	m_pCommandBuffer->AddRenderCalls(((QuadNum - 1) / gs_GraphicsMaxQuadsRenderCount) + 1);
 }

 void CGraphics_Threaded::RenderText(int BufferContainerIndex, int TextQuadNum, int TextureSize, int TextureTextIndex, int TextureTextOutlineIndex, float *pTextColor, float *pTextoutlineColor)
@ -1378,6 +1391,8 @@ void CGraphics_Threaded::RenderText(int BufferContainerIndex, int TextQuadNum, i
 	{
 		return;
 	}
+
+	m_pCommandBuffer->AddRenderCalls(1);
 }

 int CGraphics_Threaded::CreateQuadContainer(bool AutomaticUpload)
@ -1594,6 +1609,8 @@ void CGraphics_Threaded::RenderQuadContainer(int ContainerIndex, int QuadOffset,
 		{
 			return;
 		}
+
+		m_pCommandBuffer->AddRenderCalls(1);
 	}
 	else
 	{
@ -1671,6 +1688,8 @@ void CGraphics_Threaded::RenderQuadContainerEx(int ContainerIndex, int QuadOffse
 		{
 			return;
 		}
+
+		m_pCommandBuffer->AddRenderCalls(1);
 	}
 	else
 	{
@ -1815,6 +1834,9 @@ void CGraphics_Threaded::RenderQuadContainerAsSpriteMultiple(int ContainerIndex,
 		}

 		mem_copy(Cmd.m_pRenderInfo, pRenderInfo, sizeof(IGraphics::SRenderSpriteInfo) * DrawCount);
+
+		m_pCommandBuffer->AddRenderCalls(((DrawCount - 1) / gs_GraphicsMaxParticlesRenderCount) + 1);
+
 		WrapNormal();
 	}
 	else
@ -2235,6 +2257,37 @@ int CGraphics_Threaded::IssueInit()
 	return r;
 }

+void CGraphics_Threaded::AdjustViewport(bool SendViewportChangeToBackend)
+{
+	// adjust the viewport to only allow certain aspect ratios
+	// keep this in sync with backend_vulkan GetSwapImageSize's check
+	if(m_ScreenHeight > 4 * m_ScreenWidth / 5)
+	{
+		m_IsForcedViewport = true;
+		m_ScreenHeight = 4 * m_ScreenWidth / 5;
+
+		if(SendViewportChangeToBackend)
+		{
+			CCommandBuffer::SCommand_Update_Viewport Cmd;
+			Cmd.m_X = 0;
+			Cmd.m_Y = 0;
+			Cmd.m_Width = m_ScreenWidth;
+			Cmd.m_Height = m_ScreenHeight;
+			Cmd.m_ByResize = true;
+
+			if(!AddCmd(
+				   Cmd, [] { return true; }, "failed to add resize command"))
+			{
+				return;
+			}
+		}
+	}
+	else
+	{
+		m_IsForcedViewport = false;
+	}
+}
+
 void CGraphics_Threaded::AddBackEndWarningIfExists()
 {
 	const char *pErrStr = m_pBackend->GetErrorString();
@ -2354,6 +2407,16 @@ int CGraphics_Threaded::InitWindow()
 			return 0;
 	}

+	// at the very end, just try to set to gl 1.4
+	{
+		g_Config.m_GfxGLMajor = 1;
+		g_Config.m_GfxGLMinor = 4;
+		g_Config.m_GfxGLPatch = 0;
+
+		if(IssueInit() == 0)
+			return 0;
+	}
+
 	dbg_msg("gfx", "out of ideas. failed to init graphics");

 	return -1;
@ -2413,6 +2476,8 @@ int CGraphics_Threaded::Init()
 	str_format(aBuf, sizeof(aBuf), "GPU version: %s", GetVersionString());
 	m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "gfx", aBuf, GPUInfoPrintColor);

+	AdjustViewport(true);
+
 	return 0;
 }

@ -2460,6 +2525,7 @@ bool CGraphics_Threaded::SetWindowScreen(int Index)
 	}

 	m_pBackend->GetViewportSize(m_ScreenWidth, m_ScreenHeight);
+	AdjustViewport(true);
 	m_ScreenHiDPIScale = m_ScreenWidth / (float)g_Config.m_GfxScreenWidth;
 	return true;
 }
@ -2475,6 +2541,7 @@ void CGraphics_Threaded::Move(int x, int y)
 	const int CurScreen = m_pBackend->GetWindowScreen();
 	m_pBackend->UpdateDisplayMode(CurScreen);
 	m_pBackend->GetViewportSize(m_ScreenWidth, m_ScreenHeight);
+	AdjustViewport(true);
 	m_ScreenHiDPIScale = m_ScreenWidth / (float)g_Config.m_GfxScreenWidth;
 }

@ -2511,9 +2578,7 @@ void CGraphics_Threaded::GotResized(int w, int h, int RefreshRate)
 	// if the size change event is triggered, set all parameters and change the viewport
 	m_pBackend->GetViewportSize(m_ScreenWidth, m_ScreenHeight);

-	// adjust the viewport to only allow certain aspect ratios
-	if(m_ScreenHeight > 4 * m_ScreenWidth / 5)
-		m_ScreenHeight = 4 * m_ScreenWidth / 5;
+	AdjustViewport(false);

 	m_ScreenRefreshRate = RefreshRate;

@ -2635,14 +2700,16 @@ void CGraphics_Threaded::Swap()
 		}
 	}

-	// TODO: screenshot support
+	bool TookScreenshotAndSwapped = false;
+
 	if(m_DoScreenshot)
 	{
 		if(WindowActive())
-			ScreenshotDirect();
+			TookScreenshotAndSwapped = ScreenshotDirect();
 		m_DoScreenshot = false;
 	}

+	if(!TookScreenshotAndSwapped)
 	{
 		// add swap command
 		CCommandBuffer::SCommand_Swap Cmd;
--- a/src/engine/client/graphics_threaded.h
+++ b/src/engine/client/graphics_threaded.h
@ -61,6 +61,7 @@ class CCommandBuffer
 public:
 	CBuffer m_CmdBuffer;
 	size_t m_CommandCount = 0;
+	size_t m_RenderCallCount = 0;

 	CBuffer m_DataBuffer;

@ -128,7 +129,7 @@ public:

 		// misc
 		CMD_VSYNC,
-		CMD_SCREENSHOT,
+		CMD_TRY_SWAP_AND_SCREENSHOT,
 		CMD_UPDATE_VIEWPORT,

 		// in Android a window that minimizes gets destroyed
@ -213,6 +214,7 @@ public:
 		SCommand_Clear() :
 			SCommand(CMD_CLEAR) {}
 		SColorf m_Color;
+		bool m_ForceClear;
 	};

 	struct SCommand_Signal : public SCommand
@ -477,11 +479,12 @@ public:
 		void *m_pOffset;
 	};

-	struct SCommand_Screenshot : public SCommand
+	struct SCommand_TrySwapAndScreenshot : public SCommand
 	{
-		SCommand_Screenshot() :
-			SCommand(CMD_SCREENSHOT) {}
+		SCommand_TrySwapAndScreenshot() :
+			SCommand(CMD_TRY_SWAP_AND_SCREENSHOT) {}
 		CImageInfo *m_pImage; // processor will fill this out, the one who adds this command must free the data as well
+		bool *m_pSwapped;
 	};

 	struct SCommand_Swap : public SCommand
@ -663,6 +666,12 @@ public:
 		m_DataBuffer.Reset();

 		m_CommandCount = 0;
+		m_RenderCallCount = 0;
+	}
+
+	void AddRenderCalls(size_t RenderCallCountToAdd)
+	{
+		m_RenderCallCount += RenderCallCountToAdd;
 	}
 };

@ -733,7 +742,7 @@ public:
 	virtual bool IsIdle() const = 0;
 	virtual void WaitForIdle() = 0;

-	virtual void GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch) {}
+	virtual bool GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch, const char *&pName, EBackendType BackendType) = 0;
 	// checks if the current values of the config are a graphics modern API
 	virtual bool IsConfigModernAPI() { return false; }
 	virtual bool UseTrianglesAsQuad() { return false; }
@ -806,6 +815,10 @@ class CGraphics_Threaded : public IEngineGraphics

 	std::vector<SWarning> m_Warnings;

+	// is a non full windowed (in a sense that the viewport won't include the whole window),
+	// forced viewport, so that it justifies our UI ratio needs
+	bool m_IsForcedViewport = false;
+
 	struct SVertexArrayInfo
 	{
 		SVertexArrayInfo() :
@ -906,6 +919,8 @@ class CGraphics_Threaded : public IEngineGraphics

 	void AddBackEndWarningIfExists();

+	void AdjustViewport(bool SendViewportChangeToBackend);
+
 	int IssueInit();
 	int InitWindow();

@ -962,11 +977,11 @@ public:
 	void CopyTextureBufferSub(uint8_t *pDestBuffer, uint8_t *pSourceBuffer, int FullWidth, int FullHeight, int ColorChannelCount, int SubOffsetX, int SubOffsetY, int SubCopyWidth, int SubCopyHeight) override;
 	void CopyTextureFromTextureBufferSub(uint8_t *pDestBuffer, int DestWidth, int DestHeight, uint8_t *pSourceBuffer, int SrcWidth, int SrcHeight, int ColorChannelCount, int SrcSubOffsetX, int SrcSubOffsetY, int SrcSubCopyWidth, int SrcSubCopyHeight) override;

-	void ScreenshotDirect();
+	bool ScreenshotDirect();

 	void TextureSet(CTextureHandle TextureID) override;

-	void Clear(float r, float g, float b) override;
+	void Clear(float r, float g, float b, bool ForceClearNow = false) override;

 	void QuadsBegin() override;
 	void QuadsEnd() override;
@ -1197,12 +1212,14 @@ public:
 		{
 			return;
 		}
+
+		m_pCommandBuffer->AddRenderCalls(1);
 	}

 	void FlushVertices(bool KeepVertices = false) override;
 	void FlushVerticesTex3D() override;

-	void RenderTileLayer(int BufferContainerIndex, float *pColor, char **pOffsets, unsigned int *IndicedVertexDrawNum, size_t NumIndicesOffet) override;
+	void RenderTileLayer(int BufferContainerIndex, float *pColor, char **pOffsets, unsigned int *IndicedVertexDrawNum, size_t NumIndicesOffset) override;
 	void RenderBorderTiles(int BufferContainerIndex, float *pColor, char *pIndexBufferOffset, float *pOffset, float *pDir, int JumpIndex, unsigned int DrawNum) override;
 	void RenderBorderTileLines(int BufferContainerIndex, float *pColor, char *pIndexBufferOffset, float *pOffset, float *pDir, unsigned int IndexDrawNum, unsigned int RedrawNum) override;
 	void RenderQuadLayer(int BufferContainerIndex, SQuadRenderInfo *pQuadInfo, int QuadNum, int QuadOffset) override;
@ -1261,7 +1278,7 @@ public:

 	SWarning *GetCurWarning() override;

-	void GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch) override { m_pBackend->GetDriverVersion(DriverAgeType, Major, Minor, Patch); }
+	bool GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch, const char *&pName, EBackendType BackendType) override { return m_pBackend->GetDriverVersion(DriverAgeType, Major, Minor, Patch, pName, BackendType); }
 	bool IsConfigModernAPI() override { return m_pBackend->IsConfigModernAPI(); }
 	bool IsTileBufferingEnabled() override { return m_GLTileBufferingEnabled; }
 	bool IsQuadBufferingEnabled() override { return m_GLQuadBufferingEnabled; }
--- a/src/engine/client/graphics_threaded_null.h
+++ b/src/engine/client/graphics_threaded_null.h
@ -82,7 +82,7 @@ public:

 	void TextureSet(CTextureHandle TextureID) override{};

-	void Clear(float r, float g, float b) override{};
+	void Clear(float r, float g, float b, bool ForceClearNow = false) override{};

 	void QuadsBegin() override{};
 	void QuadsEnd() override{};
@ -138,7 +138,7 @@ public:
 	void FlushVertices(bool KeepVertices = false) override{};
 	void FlushVerticesTex3D() override{};

-	void RenderTileLayer(int BufferContainerIndex, float *pColor, char **pOffsets, unsigned int *IndicedVertexDrawNum, size_t NumIndicesOffet) override{};
+	void RenderTileLayer(int BufferContainerIndex, float *pColor, char **pOffsets, unsigned int *IndicedVertexDrawNum, size_t NumIndicesOffset) override{};
 	void RenderBorderTiles(int BufferContainerIndex, float *pColor, char *pIndexBufferOffset, float *pOffset, float *pDir, int JumpIndex, unsigned int DrawNum) override{};
 	void RenderBorderTileLines(int BufferContainerIndex, float *pColor, char *pIndexBufferOffset, float *pOffset, float *pDir, unsigned int IndexDrawNum, unsigned int RedrawNum) override{};
 	void RenderQuadLayer(int BufferContainerIndex, SQuadRenderInfo *pQuadInfo, int QuadNum, int QuadOffset) override{};
@ -194,7 +194,7 @@ public:

 	SWarning *GetCurWarning() override { return NULL; }

-	void GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch) override {}
+	bool GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch, const char *&pName, EBackendType BackendType) override { return false; }
 	bool IsConfigModernAPI() override { return false; }
 	bool IsTileBufferingEnabled() override { return false; }
 	bool IsQuadBufferingEnabled() override { return false; }
--- a/src/engine/graphics.h
+++ b/src/engine/graphics.h
@ -42,6 +42,8 @@ struct SQuadRenderInfo
 	float m_aColor[4];
 	float m_aOffsets[2];
 	float m_Rotation;
+	// allows easier upload for uniform buffers because of the alignment requirements
+	float m_Padding;
 };

 struct SGraphicTile
@ -151,11 +153,28 @@ struct GL_SVertexTex3DStream
 	GL_STexCoord3D m_Tex;
 };

+static constexpr size_t gs_GraphicsMaxQuadsRenderCount = 256;
+static constexpr size_t gs_GraphicsMaxParticlesRenderCount = 512;
+
 enum EGraphicsDriverAgeType
 {
 	GRAPHICS_DRIVER_AGE_TYPE_LEGACY = 0,
 	GRAPHICS_DRIVER_AGE_TYPE_DEFAULT,
 	GRAPHICS_DRIVER_AGE_TYPE_MODERN,
+
+	GRAPHICS_DRIVER_AGE_TYPE_COUNT,
+};
+
+enum EBackendType
+{
+	BACKEND_TYPE_OPENGL = 0,
+	BACKEND_TYPE_OPENGL_ES,
+	BACKEND_TYPE_VULKAN,
+
+	// special value to tell the backend to identify the current backend
+	BACKEND_TYPE_AUTO,
+
+	BACKEND_TYPE_COUNT,
 };

 struct STWGraphicGPU
@ -235,7 +254,8 @@ public:
 	virtual void WindowDestroyNtf(uint32_t WindowID) = 0;
 	virtual void WindowCreateNtf(uint32_t WindowID) = 0;

-	virtual void Clear(float r, float g, float b) = 0;
+	// ForceClearNow forces the backend to trigger a clear, even at performance cost, else it might be delayed by one frame
+	virtual void Clear(float r, float g, float b, bool ForceClearNow = false) = 0;

 	virtual void ClipEnable(int x, int y, int w, int h) = 0;
 	virtual void ClipDisable() = 0;
@ -291,7 +311,7 @@ public:
 	virtual void FlushVerticesTex3D() = 0;

 	// specific render functions
-	virtual void RenderTileLayer(int BufferContainerIndex, float *pColor, char **pOffsets, unsigned int *IndicedVertexDrawNum, size_t NumIndicesOffet) = 0;
+	virtual void RenderTileLayer(int BufferContainerIndex, float *pColor, char **pOffsets, unsigned int *IndicedVertexDrawNum, size_t NumIndicesOffset) = 0;
 	virtual void RenderBorderTiles(int BufferContainerIndex, float *pColor, char *pIndexBufferOffset, float *pOffset, float *pDir, int JumpIndex, unsigned int DrawNum) = 0;
 	virtual void RenderBorderTileLines(int BufferContainerIndex, float *pColor, char *pIndexBufferOffset, float *pOffset, float *pDir, unsigned int IndexDrawNum, unsigned int RedrawNum) = 0;
 	virtual void RenderQuadLayer(int BufferContainerIndex, SQuadRenderInfo *pQuadInfo, int QuadNum, int QuadOffset) = 0;
@ -315,7 +335,8 @@ public:
 	virtual void DeleteBufferContainer(int ContainerIndex, bool DestroyAllBO = true) = 0;
 	virtual void IndicesNumRequiredNotify(unsigned int RequiredIndicesCount) = 0;

-	virtual void GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch) = 0;
+	// returns true if the driver age type is supported, passing BACKEND_TYPE_AUTO for BackendType will query the values for the currently used backend
+	virtual bool GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch, const char *&pName, EBackendType BackendType) = 0;
 	virtual bool IsConfigModernAPI() = 0;
 	virtual bool IsTileBufferingEnabled() = 0;
 	virtual bool IsQuadBufferingEnabled() = 0;
@ -440,6 +461,7 @@ public:
 	virtual void NotifyWindow() = 0;

 	// be aware that this function should only be called from the graphics thread, and even then you should really know what you are doing
+	// this function always returns the pixels in RGB
 	virtual TGLBackendReadPresentedImageData &GetReadPresentedImageDataFuncUnsafe() = 0;

 	virtual SWarning *GetCurWarning() = 0;
--- a/src/engine/shared/config_variables.h
+++ b/src/engine/shared/config_variables.h
@ -178,7 +178,7 @@ MACRO_CONFIG_INT(DbgCurl, dbg_curl, 0, 0, 1, CFGFLAG_CLIENT | CFGFLAG_SERVER, "D
 MACRO_CONFIG_INT(DbgPref, dbg_pref, 0, 0, 1, CFGFLAG_SERVER, "Performance outputs")
 MACRO_CONFIG_INT(DbgGraphs, dbg_graphs, 0, 0, 1, CFGFLAG_CLIENT, "Performance graphs")
 MACRO_CONFIG_INT(DbgHitch, dbg_hitch, 0, 0, 0, CFGFLAG_SERVER, "Hitch warnings")
-MACRO_CONFIG_INT(DbgGfx, dbg_gfx, 0, 0, 4, CFGFLAG_CLIENT, "Show graphic library warnings and errors, if the GPU supports it (0: none, 1: minimal, 2: affects performance, 3: verbose, 4: all")
+MACRO_CONFIG_INT(DbgGfx, dbg_gfx, 0, 0, 4, CFGFLAG_CLIENT, "Show graphic library warnings and errors, if the GPU supports it (0: none, 1: minimal, 2: affects performance, 3: verbose, 4: all)")
 #ifdef CONF_DEBUG
 MACRO_CONFIG_INT(DbgStress, dbg_stress, 0, 0, 0, CFGFLAG_CLIENT | CFGFLAG_SERVER, "Stress systems (Debug build only)")
 MACRO_CONFIG_INT(DbgStressNetwork, dbg_stress_network, 0, 0, 0, CFGFLAG_CLIENT | CFGFLAG_SERVER, "Stress network (Debug build only)")
@ -418,7 +418,7 @@ MACRO_CONFIG_STR(Gfx3DTextureAnalysisRenderer, gfx_3d_texture_analysis_renderer,
 MACRO_CONFIG_STR(Gfx3DTextureAnalysisVersion, gfx_3d_texture_analysis_version, 128, "", CFGFLAG_SAVE | CFGFLAG_CLIENT, "The version on which the analysis was performed")

 MACRO_CONFIG_STR(GfxGPUName, gfx_gpu_name, 256, "auto", CFGFLAG_SAVE | CFGFLAG_CLIENT, "The GPU's name, which will be selected by the backend. (if supported by the backend)")
-MACRO_CONFIG_STR(GfxBackend, gfx_backend, 256, "auto", CFGFLAG_SAVE | CFGFLAG_CLIENT, "The backend to use (e.g. opengl or vulkan)")
+MACRO_CONFIG_STR(GfxBackend, gfx_backend, 256, "OpenGL", CFGFLAG_SAVE | CFGFLAG_CLIENT, "The backend to use (e.g. OpenGL or Vulkan)")
 MACRO_CONFIG_INT(GfxRenderThreadCount, gfx_render_thread_count, 3, 0, 0, CFGFLAG_SAVE | CFGFLAG_CLIENT, "Number of threads the backend can use for rendering. (note: the value can be ignored by the backend)")

 MACRO_CONFIG_INT(GfxDriverIsBlocked, gfx_driver_is_blocked, 0, 0, 1, CFGFLAG_SAVE | CFGFLAG_CLIENT, "If 1, the current driver is in a blocked error state.")
--- a/src/game/client/components/maplayers.cpp
+++ b/src/game/client/components/maplayers.cpp
@ -844,6 +844,7 @@ void CMapLayers::OnMapLoad()
 							// then create the buffer container
 							SBufferContainerInfo ContainerInfo;
 							ContainerInfo.m_Stride = (DoTextureCoords ? (sizeof(float) * 2 + sizeof(vec3)) : 0);
+							ContainerInfo.m_VertBufferBindingIndex = BufferObjectIndex;
 							ContainerInfo.m_Attributes.emplace_back();
 							SBufferContainerInfo::SAttribute *pAttr = &ContainerInfo.m_Attributes.back();
 							pAttr->m_DataTypeCount = 2;
@ -946,6 +947,7 @@ void CMapLayers::OnMapLoad()
 					// then create the buffer container
 					SBufferContainerInfo ContainerInfo;
 					ContainerInfo.m_Stride = (Textured ? (sizeof(STmpQuadTextured) / 4) : (sizeof(STmpQuad) / 4));
+					ContainerInfo.m_VertBufferBindingIndex = BufferObjectIndex;
 					ContainerInfo.m_Attributes.emplace_back();
 					SBufferContainerInfo::SAttribute *pAttr = &ContainerInfo.m_Attributes.back();
 					pAttr->m_DataTypeCount = 4;
@ -1401,6 +1403,17 @@ void CMapLayers::RenderQuadLayer(int LayerIndex, CMapItemLayerQuads *pQuadLayer,
 			Rot = aChannels[2] / 180.0f * pi;
 		}

+		bool NeedsFlush = QuadsRenderCount == gs_GraphicsMaxQuadsRenderCount || !(aColor[3] > 0);
+
+		if(NeedsFlush)
+		{
+			// render quads of the current offset directly(cancel batching)
+			Graphics()->RenderQuadLayer(Visuals.m_BufferContainerIndex, &s_QuadRenderInfo[0], QuadsRenderCount, CurQuadOffset);
+			QuadsRenderCount = 0;
+			// since this quad is ignored, the offset is the next quad
+			CurQuadOffset = i + 1;
+		}
+
 		if(aColor[3] > 0)
 		{
 			SQuadRenderInfo &QInfo = s_QuadRenderInfo[QuadsRenderCount++];
@ -1409,14 +1422,6 @@ void CMapLayers::RenderQuadLayer(int LayerIndex, CMapItemLayerQuads *pQuadLayer,
 			QInfo.m_aOffsets[1] = OffsetY;
 			QInfo.m_Rotation = Rot;
 		}
-		else
-		{
-			// render quads of the current offset directly(cancel batching)
-			Graphics()->RenderQuadLayer(Visuals.m_BufferContainerIndex, &s_QuadRenderInfo[0], QuadsRenderCount, CurQuadOffset);
-			QuadsRenderCount = 0;
-			// since this quad is ignored, the offset is the next quad
-			CurQuadOffset = i + 1;
-		}
 	}
 	Graphics()->RenderQuadLayer(Visuals.m_BufferContainerIndex, &s_QuadRenderInfo[0], QuadsRenderCount, CurQuadOffset);
 }
--- a/src/game/client/components/menus_settings.cpp
+++ b/src/game/client/components/menus_settings.cpp
@ -35,6 +35,8 @@
 #include <utility>
 #include <vector>

+#include <array>
+
 CMenusKeyBinder CMenus::m_Binder;

 CMenusKeyBinder::CMenusKeyBinder()
@ -1100,9 +1102,7 @@ void CMenus::RenderSettingsGraphics(CUIRect MainView)
 	static CVideoMode s_aModes[MAX_RESOLUTIONS];
 	static int s_NumNodes = Graphics()->GetVideoModes(s_aModes, MAX_RESOLUTIONS, g_Config.m_GfxScreen);
 	static int s_GfxFsaaSamples = g_Config.m_GfxFsaaSamples;
-	static int s_GfxModernGLVersion = Graphics()->IsConfigModernAPI();
-	static int s_GfxEnableTextureUnitOptimization = g_Config.m_GfxEnableTextureUnitOptimization;
-	static int s_GfxUsePreinitBuffer = g_Config.m_GfxUsePreinitBuffer;
+	static bool s_GfxBackendChanged = false;
 	static int s_GfxHighdpi = g_Config.m_GfxHighdpi;
 	static int s_InitDisplayAllVideoModes = g_Config.m_GfxDisplayAllVideoModes;

@ -1185,6 +1185,8 @@ void CMenus::RenderSettingsGraphics(CUIRect MainView)
 		aWindowModeIDs[i] = &s_aWindowModeIDs[i];
 	static int s_WindowModeDropDownState = 0;

+	static int s_OldSelectedBackend = -1;
+
 	OldSelected = (g_Config.m_GfxFullscreen ? (g_Config.m_GfxFullscreen == 1 ? 4 : (g_Config.m_GfxFullscreen == 2 ? 3 : 2)) : (g_Config.m_GfxBorderless ? 1 : 0));

 	const int NewWindowMode = RenderDropDown(s_WindowModeDropDownState, &MainView, OldSelected, aWindowModeIDs, pWindowModes, s_NumWindowMode, &s_NumWindowMode, s_ScrollValueDrop);
@ -1244,46 +1246,6 @@ void CMenus::RenderSettingsGraphics(CUIRect MainView)
 	if(DoButton_CheckBox(&g_Config.m_GfxHighDetail, Localize("High Detail"), g_Config.m_GfxHighDetail, &Button))
 		g_Config.m_GfxHighDetail ^= 1;

-	bool IsModernGL = Graphics()->IsConfigModernAPI();
-
-	// only promote modern GL in menu settings if the driver isn't on the blocklist already
-	if(g_Config.m_GfxDriverIsBlocked == 0)
-	{
-		MainView.HSplitTop(20.0f, &Button, &MainView);
-
-		if(DoButton_CheckBox(&g_Config.m_GfxGLMajor, Localize("Use modern OpenGL"), IsModernGL, &Button))
-		{
-			CheckSettings = true;
-			if(IsModernGL)
-			{
-				Graphics()->GetDriverVersion(GRAPHICS_DRIVER_AGE_TYPE_DEFAULT, g_Config.m_GfxGLMajor, g_Config.m_GfxGLMinor, g_Config.m_GfxGLPatch);
-				IsModernGL = false;
-			}
-			else
-			{
-				Graphics()->GetDriverVersion(GRAPHICS_DRIVER_AGE_TYPE_MODERN, g_Config.m_GfxGLMajor, g_Config.m_GfxGLMinor, g_Config.m_GfxGLPatch);
-				IsModernGL = true;
-			}
-		}
-
-		if(IsModernGL)
-		{
-			MainView.HSplitTop(20.0f, &Button, &MainView);
-			if(DoButton_CheckBox(&g_Config.m_GfxUsePreinitBuffer, Localize("Preinit VBO (iGPUs only)"), g_Config.m_GfxUsePreinitBuffer, &Button))
-			{
-				CheckSettings = true;
-				g_Config.m_GfxUsePreinitBuffer ^= 1;
-			}
-
-			MainView.HSplitTop(20.0f, &Button, &MainView);
-			if(DoButton_CheckBox(&g_Config.m_GfxEnableTextureUnitOptimization, Localize("Multiple texture units (disable for macOS)"), g_Config.m_GfxEnableTextureUnitOptimization, &Button))
-			{
-				CheckSettings = true;
-				g_Config.m_GfxEnableTextureUnitOptimization ^= 1;
-			}
-		}
-	}
-
 	MainView.HSplitTop(20.0f, &Button, &MainView);
 	if(DoButton_CheckBox(&g_Config.m_GfxHighdpi, Localize("Use high DPI"), g_Config.m_GfxHighdpi, &Button))
 	{
@ -1291,16 +1253,6 @@ void CMenus::RenderSettingsGraphics(CUIRect MainView)
 		g_Config.m_GfxHighdpi ^= 1;
 	}

-	// check if the new settings require a restart
-	if(CheckSettings)
-	{
-		m_NeedRestartGraphics = !(s_GfxFsaaSamples == g_Config.m_GfxFsaaSamples &&
-					  s_GfxModernGLVersion == (int)IsModernGL &&
-					  s_GfxUsePreinitBuffer == g_Config.m_GfxUsePreinitBuffer &&
-					  s_GfxEnableTextureUnitOptimization == g_Config.m_GfxEnableTextureUnitOptimization &&
-					  s_GfxHighdpi == g_Config.m_GfxHighdpi);
-	}
-
 	MainView.HSplitTop(20.0f, &Label, &MainView);
 	Label.VSplitLeft(160.0f, &Label, &Button);
 	if(g_Config.m_GfxRefreshRate)
@ -1322,13 +1274,143 @@ void CMenus::RenderSettingsGraphics(CUIRect MainView)
 	MainView.y = HSLBar.y;
 	MainView.h = MainView.h - MainView.y;

+	// Backend list
+	struct SMenuBackendInfo
+	{
+		int m_Major = 0;
+		int m_Minor = 0;
+		int m_Patch = 0;
+		const char *m_pBackendName = "";
+		bool m_Found = false;
+	};
+	std::array<std::array<SMenuBackendInfo, EGraphicsDriverAgeType::GRAPHICS_DRIVER_AGE_TYPE_COUNT>, EBackendType::BACKEND_TYPE_COUNT> aaSupportedBackends{};
+	uint32_t FoundBackendCount = 0;
+	for(uint32_t i = 0; i < BACKEND_TYPE_COUNT; ++i)
+	{
+		if(EBackendType(i) == BACKEND_TYPE_AUTO)
+			continue;
+		for(uint32_t n = 0; n < GRAPHICS_DRIVER_AGE_TYPE_COUNT; ++n)
+		{
+			auto &Info = aaSupportedBackends[i][n];
+			if(Graphics()->GetDriverVersion(EGraphicsDriverAgeType(n), Info.m_Major, Info.m_Minor, Info.m_Patch, Info.m_pBackendName, EBackendType(i)))
+			{
+				// don't count blocked opengl drivers
+				if(EBackendType(i) != BACKEND_TYPE_OPENGL || EGraphicsDriverAgeType(n) == GRAPHICS_DRIVER_AGE_TYPE_LEGACY || g_Config.m_GfxDriverIsBlocked == 0)
+				{
+					Info.m_Found = true;
+					++FoundBackendCount;
+				}
+			}
+		}
+	}
+
+	if(FoundBackendCount > 1)
+	{
+		MainView.HSplitTop(10.0f, nullptr, &MainView);
+		MainView.HSplitTop(20.0f, &Text, &MainView);
+		UI()->DoLabelScaled(&Text, Localize("Renderer"), 16.0f, TEXTALIGN_CENTER);
+
+		static float s_ScrollValueDropBackend = 0;
+		static int s_BackendDropDownState = 0;
+
+		static std::vector<std::unique_ptr<int>> vBackendIDs;
+		static std::vector<const void *> vBackendIDPtrs;
+		static std::vector<std::string> vBackendIDNames;
+		static std::vector<const char *> vBackendIDNamesCStr;
+		static std::vector<SMenuBackendInfo> vBackendInfos;
+
+		size_t BackendCount = FoundBackendCount + 1;
+		vBackendIDs.resize(BackendCount);
+		vBackendIDPtrs.resize(BackendCount);
+		vBackendIDNames.resize(BackendCount);
+		vBackendIDNamesCStr.resize(BackendCount);
+		vBackendInfos.resize(BackendCount);
+
+		char aTmpBackendName[256];
+
+		auto IsInfoDefault = [](const SMenuBackendInfo &CheckInfo) {
+			return str_comp_nocase(CheckInfo.m_pBackendName, "OpenGL") == 0 && CheckInfo.m_Major == 3 && CheckInfo.m_Minor == 0 && CheckInfo.m_Patch == 0;
+		};
+
+		int OldSelectedBackend = -1;
+		uint32_t CurCounter = 0;
+		for(uint32_t i = 0; i < BACKEND_TYPE_COUNT; ++i)
+		{
+			for(uint32_t n = 0; n < GRAPHICS_DRIVER_AGE_TYPE_COUNT; ++n)
+			{
+				auto &Info = aaSupportedBackends[i][n];
+				if(Info.m_Found)
+				{
+					if(vBackendIDs[CurCounter].get() == nullptr)
+						vBackendIDs[CurCounter] = std::make_unique<int>();
+					vBackendIDPtrs[CurCounter] = vBackendIDs[CurCounter].get();
+
+					{
+						bool IsDefault = IsInfoDefault(Info);
+						str_format(aTmpBackendName, sizeof(aTmpBackendName), "%s (%d.%d.%d)%s%s", Info.m_pBackendName, Info.m_Major, Info.m_Minor, Info.m_Patch, IsDefault ? " - " : "", IsDefault ? Localize("default") : "");
+						vBackendIDNames[CurCounter] = aTmpBackendName;
+						vBackendIDNamesCStr[CurCounter] = vBackendIDNames[CurCounter].c_str();
+						if(str_comp_nocase(Info.m_pBackendName, g_Config.m_GfxBackend) == 0 && g_Config.m_GfxGLMajor == Info.m_Major && g_Config.m_GfxGLMinor == Info.m_Minor && g_Config.m_GfxGLPatch == Info.m_Patch)
+						{
+							OldSelectedBackend = CurCounter;
+						}
+
+						vBackendInfos[CurCounter] = Info;
+					}
+					++CurCounter;
+				}
+			}
+		}
+
+		if(OldSelectedBackend != -1)
+		{
+			// no custom selected
+			BackendCount -= 1;
+		}
+		else
+		{
+			// custom selected one
+			if(vBackendIDs[CurCounter].get() == nullptr)
+				vBackendIDs[CurCounter] = std::make_unique<int>();
+			vBackendIDPtrs[CurCounter] = vBackendIDs[CurCounter].get();
+
+			str_format(aTmpBackendName, sizeof(aTmpBackendName), "%s (%s %d.%d.%d)", Localize("custom"), g_Config.m_GfxBackend, g_Config.m_GfxGLMajor, g_Config.m_GfxGLMinor, g_Config.m_GfxGLPatch);
+			vBackendIDNames[CurCounter] = aTmpBackendName;
+			vBackendIDNamesCStr[CurCounter] = vBackendIDNames[CurCounter].c_str();
+			OldSelectedBackend = CurCounter;
+
+			vBackendInfos[CurCounter].m_pBackendName = "custom";
+			vBackendInfos[CurCounter].m_Major = g_Config.m_GfxGLMajor;
+			vBackendInfos[CurCounter].m_Minor = g_Config.m_GfxGLMinor;
+			vBackendInfos[CurCounter].m_Patch = g_Config.m_GfxGLPatch;
+		}
+
+		if(s_OldSelectedBackend == -1)
+			s_OldSelectedBackend = OldSelectedBackend;
+
+		static int s_BackendCount = 0;
+		s_BackendCount = BackendCount;
+
+		const int NewBackend = RenderDropDown(s_BackendDropDownState, &MainView, OldSelectedBackend, vBackendIDPtrs.data(), vBackendIDNamesCStr.data(), s_BackendCount, &s_BackendCount, s_ScrollValueDropBackend);
+		if(OldSelectedBackend != NewBackend)
+		{
+			str_copy(g_Config.m_GfxBackend, vBackendInfos[NewBackend].m_pBackendName, sizeof(g_Config.m_GfxBackend));
+			g_Config.m_GfxGLMajor = vBackendInfos[NewBackend].m_Major;
+			g_Config.m_GfxGLMinor = vBackendInfos[NewBackend].m_Minor;
+			g_Config.m_GfxGLPatch = vBackendInfos[NewBackend].m_Patch;
+
+			CheckSettings = true;
+			s_GfxBackendChanged = s_OldSelectedBackend != NewBackend;
+		}
+	}
+
 	// GPU list
 	const auto &GPUList = Graphics()->GetGPUs();
 	if(GPUList.m_GPUs.size() > 1)
 	{
 		MainView.HSplitTop(10.0f, nullptr, &MainView);
 		MainView.HSplitTop(20.0f, &Text, &MainView);
-		UI()->DoLabelScaled(&Text, Localize("Graphic cards"), 16.0f, TEXTALIGN_CENTER);
+		UI()->DoLabelScaled(&Text, Localize("Graphics cards"), 16.0f, TEXTALIGN_CENTER);

 		static float s_ScrollValueDropGPU = 0;
 		static int s_GPUDropDownState = 0;
@ -1348,7 +1430,7 @@ void CMenus::RenderSettingsGraphics(CUIRect MainView)
 		for(size_t i = 0; i < GPUCount; ++i)
 		{
 			if(vGPUIDs[i].get() == nullptr)
-				vGPUIDs[i] = std::unique_ptr<int>(new int());
+				vGPUIDs[i] = std::make_unique<int>();
 			vGPUIDPtrs[i] = vGPUIDs[i].get();
 			if(i == 0)
 			{
@ -1381,6 +1463,14 @@ void CMenus::RenderSettingsGraphics(CUIRect MainView)
 				str_copy(g_Config.m_GfxGPUName, GPUList.m_GPUs[NewGPU - 1].m_Name, sizeof(g_Config.m_GfxGPUName));
 		}
 	}
+
+	// check if the new settings require a restart
+	if(CheckSettings)
+	{
+		m_NeedRestartGraphics = !(s_GfxFsaaSamples == g_Config.m_GfxFsaaSamples &&
+					  !s_GfxBackendChanged &&
+					  s_GfxHighdpi == g_Config.m_GfxHighdpi);
+	}
 }

 void CMenus::RenderSettingsSound(CUIRect MainView)
--- a/src/game/client/components/particles.cpp
+++ b/src/game/client/components/particles.cpp
@ -231,7 +231,7 @@ void CParticles::RenderGroup(int Group)
 			// the current position, respecting the size, is inside the viewport, render it, else ignore
 			if(ParticleIsVisibleOnScreen(p, Size))
 			{
-				if(LastColor[0] != m_aParticles[i].m_Color.r || LastColor[1] != m_aParticles[i].m_Color.g || LastColor[2] != m_aParticles[i].m_Color.b || LastColor[3] != m_aParticles[i].m_Color.a || LastQuadOffset != QuadOffset)
+				if((size_t)CurParticleRenderCount == gs_GraphicsMaxParticlesRenderCount || LastColor[0] != m_aParticles[i].m_Color.r || LastColor[1] != m_aParticles[i].m_Color.g || LastColor[2] != m_aParticles[i].m_Color.b || LastColor[3] != m_aParticles[i].m_Color.a || LastQuadOffset != QuadOffset)
 				{
 					Graphics()->TextureSet(GameClient()->m_ParticlesSkin.m_SpriteParticles[LastQuadOffset - SPRITE_PART_SLICE]);
 					Graphics()->RenderQuadContainerAsSpriteMultiple(m_ParticleQuadContainerIndex, LastQuadOffset, CurParticleRenderCount, s_aParticleRenderInfo);
--- a/src/game/editor/editor.cpp
+++ b/src/game/editor/editor.cpp
@ -5666,7 +5666,7 @@ void CEditor::RenderMenubar(CUIRect MenuBar)
 void CEditor::Render()
 {
 	// basic start
-	Graphics()->Clear(1.0f, 0.0f, 1.0f);
+	Graphics()->Clear(0.0f, 0.0f, 0.0f);
 	CUIRect View = *UI()->Screen();
 	UI()->MapScreen();