Support Vulkan on Haiku

[kallisti5]

Haiku has libvulkan and support for Vulkan. SDL should support Vulkan under Haiku :-)

Obviously a lot more is needed than this... but it gets the ball rolling.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5411cab74..432466296 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -434,7 +434,7 @@ set_option(SDL_WASAPI              "Use the Windows WASAPI audio driver" ${WINDO
 set_option(SDL_RENDER_D3D          "Enable the Direct3D render driver" ${WINDOWS})
 set_option(SDL_RENDER_METAL        "Enable the Metal render driver" ${APPLE})
 set_option(SDL_VIVANTE             "Use Vivante EGL video driver" ${UNIX_SYS})
-dep_option(SDL_VULKAN              "Enable Vulkan support" ON "ANDROID OR APPLE OR LINUX OR WINDOWS" OFF)
+dep_option(SDL_VULKAN              "Enable Vulkan support" ON "ANDROID OR APPLE OR LINUX OR WINDOWS OR HAIKU" OFF)
 set_option(SDL_METAL               "Enable Metal support" ${APPLE})
 set_option(SDL_KMSDRM              "Use KMS DRM video driver" ${UNIX_SYS})
 dep_option(SDL_KMSDRM_SHARED       "Dynamically load KMS DRM support" ON "SDL_KMSDRM" OFF)
@@ -2433,6 +2433,11 @@ elseif(HAIKU)
       list(APPEND SDL_EXTRA_LIBS GL)
       set(HAVE_OPENGL TRUE)
     endif()
+
+    if(SDL_VULKAN)
+      set(SDL_VIDEO_VULKAN 1)
+      set(HAVE_VULKAN TRUE)
+    endif()
   endif()

   if(SDL_FILESYSTEM)

[slouken]

Feel free to create a PR that has a more complete and tested implementation!

[icculus]

(To be clear, the Vulkan code that needs to be in SDL itself is extremely small...we just have a little code to help find the right platform-specific extensions and Vulkan itself does the rest outside of SDL.)

[slouken]

SDL 2.0 is now in maintenance mode, and all inactive issues are being closed. If this issue is impacting you, please feel free to reopen it with additional information.

[icculus]

Actually, let's keep this open as an SDL3 thing if nothing else; it doesn't need much code from SDL, I mostly just need to fill in the magic Haiku-specific extension names.