gg: native rendering mode on macOS

thirdparty/sokol/sokol_app2.h

@@ -0,0 +1,33 @@
+
+@implementation MyView2
+
+// Alternative drawRect which calls a frame function with native Cocoa calls
+- (void)drawRect:(NSRect)rect {
+    _sapp_call_frame2();
+}
+
+//- (BOOL)isOpaque {
+//    return NO;
+//}
+
+- (BOOL)canBecomeKeyView {
+    return YES;
+}
+- (BOOL)acceptsFirstResponder {
+    return YES;
+}
+
+- (void)mouseExited:(NSEvent*)event {
+}
+
+- (void)mouseDown:(NSEvent*)event {
+	}
+
+- (BOOL)acceptsFirstMouse:(NSEvent *)event {
+	return YES;
+}
+
+
+@end
+
+