1 files changed, 61 insertions, 0 deletions
diff --git a/src/mbgl/renderer/tile_render_data.hpp b/src/mbgl/renderer/tile_render_data.hpp
new file mode 100644
index 0000000000..85bbc49565
--- /dev/null
+++ b/src/mbgl/renderer/tile_render_data.hpp
@@ -0,0 +1,61 @@
+#pragma once
+
+#include <mbgl/gfx/texture.hpp>
+#include <mbgl/renderer/image_atlas.hpp>
+#include <mbgl/style/layer_impl.hpp>
+
+#include <memory>
+
+namespace mbgl {
+
+namespace gfx {
+class UploadPass;
+} // namespace gfx
+
+class Bucket;
+class LayerRenderData;
+class SourcePrepareParameters;
+
+class TileAtlasTextures {
+public:    
+    optional<gfx::Texture> glyph;
+    optional<gfx::Texture> icon;
+};
+
+class TileRenderData {
+public:
+    virtual ~TileRenderData();
+    const gfx::Texture& getGlyphAtlasTexture() const;
+    const gfx::Texture& getIconAtlasTexture() const;
+    // To be implemented for concrete tile types.
+    virtual optional<ImagePosition> getPattern(const std::string&) const;
+    virtual const LayerRenderData* getLayerRenderData(const style::Layer::Impl&) const;
+    virtual Bucket* getBucket(const style::Layer::Impl&) const;
+    virtual void upload(gfx::UploadPass&) {}
+    virtual void prepare(const SourcePrepareParameters&) {}
+
+protected:
+    TileRenderData();
+    TileRenderData(std::shared_ptr<TileAtlasTextures>);
+    std::shared_ptr<TileAtlasTextures> atlasTextures;
+};
+
+template <typename BucketType>
+class SharedBucketTileRenderData final : public TileRenderData {
+public:
+    SharedBucketTileRenderData(std::shared_ptr<BucketType> bucket_)
+        : bucket(std::move(bucket_)) {}
+
+private:
+    // TileRenderData overrides.
+    Bucket* getBucket(const style::Layer::Impl&) const override {
+        return bucket ? bucket.get() : nullptr;
+    }
+    void upload(gfx::UploadPass& uploadPass) override {
+        if (bucket) bucket->upload(uploadPass);
+    }
+
+    std::shared_ptr<BucketType> bucket;
+};
+
+} // namespace mbgl