1 files changed, 50 insertions, 0 deletions
diff --git a/platform/default/include/mbgl/gl/headless_backend.hpp b/platform/default/include/mbgl/gl/headless_backend.hpp
new file mode 100644
index 0000000000..7757037533
--- /dev/null
+++ b/platform/default/include/mbgl/gl/headless_backend.hpp
@@ -0,0 +1,50 @@
+#pragma once
+
+#include <mbgl/renderer/renderer_backend.hpp>
+
+#include <memory>
+#include <functional>
+
+namespace mbgl {
+
+class HeadlessBackend : public RendererBackend {
+public:
+    HeadlessBackend(Size = { 256, 256 });
+    ~HeadlessBackend() override;
+
+    void bind() override;
+    Size getFramebufferSize() const override;
+    void updateAssumedState() override;
+
+    void setSize(Size);
+    PremultipliedImage readStillImage();
+
+    class Impl {
+    public:
+        virtual ~Impl() = default;
+        virtual gl::ProcAddress getExtensionFunctionPointer(const char*) = 0;
+        virtual void activateContext() = 0;
+        virtual void deactivateContext() {}
+    };
+
+private:
+    // Implementation specific functions
+    gl::ProcAddress getExtensionFunctionPointer(const char*) override;
+
+    void activate() override;
+    void deactivate() override;
+
+    void createImpl();
+
+private:
+    std::unique_ptr<Impl> impl;
+
+    Size size;
+    float pixelRatio;
+    bool active = false;
+
+    class View;
+    std::unique_ptr<View> view;
+};
+
+} // namespace mbgl