WebGPU - Add support for wgpu (#3899)

include/mbgl/webgpu/draw_scope_resource.hpp

@@ -13,7 +13,7 @@ public:
     ~DrawScopeResource() override = default;
 
 private:
-    Context& context;
+    [[maybe_unused]] Context& context;
 };
 
 } // namespace webgpu

include/mbgl/webgpu/renderer_backend.hpp

@@ -2,6 +2,13 @@
 
 #include <mbgl/gfx/renderer_backend.hpp>
 #include <mbgl/util/size.hpp>
+
+#if MLN_WEBGPU_IMPL_DAWN
+#include <webgpu/webgpu.h>
+#elif MLN_WEBGPU_IMPL_WGPU
+#include <webgpu.h>
+#endif
+
 #include <mbgl/webgpu/wgpu_cpp_compat.hpp>
 #include <memory>
 

include/mbgl/webgpu/wgpu_cpp_compat.hpp

@@ -10,7 +10,13 @@
 #pragma GCC diagnostic ignored "-Wstrict-aliasing"
 #endif
 
+#if MLN_WEBGPU_IMPL_DAWN
+// For Dawn backend, use Dawn's C++ wrapper
 #include <webgpu/webgpu_cpp.h>
+#elif MLN_WEBGPU_IMPL_WGPU
+// For wgpu-native backend, use the WebGPU-Cpp wrapper
+#include <webgpu.hpp>
+#endif
 
 #if defined(__clang__)
 #pragma clang diagnostic pop