On macOS/iOS, use Metal instead of Vulkan

See love2d#2066
See love2d#2068

CMakeLists.txt

@@ -641,36 +641,67 @@ target_link_libraries(love_graphics_opengl PUBLIC
  lovedep::SDL
 )
 
-add_library(love_graphics_vulkan STATIC
- src/modules/graphics/vulkan/Graphics.h
- src/modules/graphics/vulkan/Graphics.cpp
- src/modules/graphics/vulkan/GraphicsReadback.h
- src/modules/graphics/vulkan/GraphicsReadback.cpp
- src/modules/graphics/vulkan/Shader.h
- src/modules/graphics/vulkan/Shader.cpp
- src/modules/graphics/vulkan/ShaderStage.h
- src/modules/graphics/vulkan/ShaderStage.cpp
- src/modules/graphics/vulkan/StreamBuffer.h
- src/modules/graphics/vulkan/StreamBuffer.cpp
- src/modules/graphics/vulkan/Buffer.h
- src/modules/graphics/vulkan/Buffer.cpp
- src/modules/graphics/vulkan/Texture.h
- src/modules/graphics/vulkan/Texture.cpp
- src/modules/graphics/vulkan/Vulkan.h
- src/modules/graphics/vulkan/Vulkan.cpp
- src/modules/graphics/vulkan/VulkanWrapper.h
-)
-target_link_libraries(love_graphics_vulkan PUBLIC
- lovedep::SDL
-)
-
 add_library(love_graphics INTERFACE)
 target_link_libraries(love_graphics INTERFACE
  love_graphics_root
  love_graphics_opengl
- love_graphics_vulkan
 )
 
+if(APPLE)
+ add_library(love_graphics_metal STATIC
+ src/modules/graphics/metal/Buffer.h
+ src/modules/graphics/metal/Buffer.mm
+ src/modules/graphics/metal/Graphics.h
+ src/modules/graphics/metal/Graphics.mm
+ src/modules/graphics/metal/GraphicsReadback.h
+ src/modules/graphics/metal/GraphicsReadback.mm
+ src/modules/graphics/metal/Metal.h
+ src/modules/graphics/metal/Metal.mm
+ src/modules/graphics/metal/Shader.h
+ src/modules/graphics/metal/Shader.mm
+ src/modules/graphics/metal/ShaderStage.h
+ src/modules/graphics/metal/ShaderStage.mm
+ src/modules/graphics/metal/StreamBuffer.h
+ src/modules/graphics/metal/StreamBuffer.mm
+ src/modules/graphics/metal/Texture.h
+ src/modules/graphics/metal/Texture.mm
+ )
+ target_link_libraries(love_graphics_metal PUBLIC
+ objc
+ "-framework Metal"
+ "-framework QuartzCore"
+ )
+ target_link_libraries(love_graphics INTERFACE
+ love_graphics_metal
+ )
+else()
+ add_library(love_graphics_vulkan STATIC
+ src/modules/graphics/vulkan/Graphics.h
+ src/modules/graphics/vulkan/Graphics.cpp
+ src/modules/graphics/vulkan/GraphicsReadback.h
+ src/modules/graphics/vulkan/GraphicsReadback.cpp
+ src/modules/graphics/vulkan/Shader.h
+ src/modules/graphics/vulkan/Shader.cpp
+ src/modules/graphics/vulkan/ShaderStage.h
+ src/modules/graphics/vulkan/ShaderStage.cpp
+ src/modules/graphics/vulkan/StreamBuffer.h
+ src/modules/graphics/vulkan/StreamBuffer.cpp
+ src/modules/graphics/vulkan/Buffer.h
+ src/modules/graphics/vulkan/Buffer.cpp
+ src/modules/graphics/vulkan/Texture.h
+ src/modules/graphics/vulkan/Texture.cpp
+ src/modules/graphics/vulkan/Vulkan.h
+ src/modules/graphics/vulkan/Vulkan.cpp
+ src/modules/graphics/vulkan/VulkanWrapper.h
+ )
+ target_link_libraries(love_graphics_vulkan PUBLIC
+ lovedep::SDL
+ )
+ target_link_libraries(love_graphics INTERFACE
+ love_graphics_vulkan
+ )
+endif()
+
 #
 # love.image
 #