[core] refactor RendererBackend

1 files changed, 22 insertions, 0 deletions

diff --git a/src/mbgl/gfx/renderer_backend.cpp b/src/mbgl/gfx/renderer_backend.cpp
new file mode 100644
index 0000000000..f0336f8b60
--- /dev/null
+++ b/src/mbgl/gfx/renderer_backend.cpp
@@ -0,0 +1,22 @@
+#include <mbgl/gfx/renderer_backend.hpp>
+#include <mbgl/gfx/backend_scope.hpp>
+#include <mbgl/gfx/context.hpp>
+
+namespace mbgl {
+namespace gfx {
+
+RendererBackend::RendererBackend() = default;
+
+RendererBackend::~RendererBackend() = default;
+
+gfx::Context& RendererBackend::getContext() {
+    assert(BackendScope::exists());
+    std::call_once(initialized, [this] {
+        context = createContext();
+    });
+    assert(context);
+    return *context;
+}
+
+} // namespace gfx
+} // namespace mbgl