C instance creation

rendering_api/metal/CMakeLists.txt

@@ -1,4 +1,5 @@
 set(CMAKE_EXPORT_COMPILE_COMMANDS on)
+set(CMAKE_CXX_STANDARD 17)
 project(GryphnMetalImpl)
 
 file(GLOB_RECURSE SOURCE_FILES CONFIGURE_DEPENDS

rendering_api/metal/src/core/instance/metal_instance.cpp

@@ -0,0 +1,19 @@
+#include <gryphn/gryphn.h>
+#include <gryphn/gryphn_utils.h>
+// #include "bridge/metal_bridge.h"
+#include "metal_instance.h"
+
+GN_EXPORT gnReturnCode gnCreateInstanceFn(gnInstance* instance) {
+    if (instance->instance == nullptr) instance->instance = new gnPlatformInstance();
+    return GN_SUCCESS;
+}
+
+GN_EXPORT void gnDestroyInstanceFn(gnInstance& instance) {
+
+}
+
+GN_EXPORT gnReturnCode gnCreateMacOSWindowSurfaceFn(gnInstance& instance, NS::Window* window, NS::View* view) {
+    if (instance.instance == nullptr) instance.instance = new gnPlatformInstance();
+    instance.instance->metalContentView = view;
+    return GN_SUCCESS;
+}

rendering_api/metal/src/core/instance/metal_instance.h

@@ -0,0 +1,10 @@
+#pragma once
+#include <Metal/Metal.hpp>
+#include <AppKit/AppKit.hpp>
+
+struct GLFWwindow;
+
+struct gnPlatformInstance {
+    NS::View* metalContentView;
+    MTL::RenderPipelineState* framebufferRenderer, *testSquareRenderer;
+};

rendering_api/metal/src/core/metal_supports.cpp

@@ -1,3 +1,4 @@
+#include "utils/gryphn_bool.h"
 #include <core/gryphn_support.h>
 
 GN_EXPORT gnBool gnAPISupportsFn(gnFeature feature) {