[qt] Render asynchronously

1 files changed, 33 insertions, 0 deletions

diff --git a/platform/qt/src/qmapboxgl_renderer_backend.hpp b/platform/qt/src/qmapboxgl_renderer_backend.hpp
new file mode 100644
index 0000000000..fb38556b55
--- /dev/null
+++ b/platform/qt/src/qmapboxgl_renderer_backend.hpp
@@ -0,0 +1,33 @@
+#pragma once
+
+#include "qmapboxgl.hpp"
+
+#include <mbgl/renderer/renderer_backend.hpp>
+#include <mbgl/storage/default_file_source.hpp>
+#include <mbgl/util/shared_thread_pool.hpp>
+
+class QMapboxGLRendererBackend : public mbgl::RendererBackend
+{
+public:
+    QMapboxGLRendererBackend() = default;
+    virtual ~QMapboxGLRendererBackend() = default;
+
+    // mbgl::RendererBackend implementation
+    void updateAssumedState() final;
+    void bind() final {}
+    mbgl::Size getFramebufferSize() const final;
+
+    void setFramebufferSize(const mbgl::Size &);
+
+protected:
+    mbgl::gl::ProcAddress getExtensionFunctionPointer(const char*) final;
+
+    // No-op, implicit mode.
+    void activate() final {}
+    void deactivate() final {}
+
+private:
+    mbgl::Size m_size = { 0, 0 };
+
+    Q_DISABLE_COPY(QMapboxGLRendererBackend)
+};