nothing actually done

src/graphics/render/BlocksPreview.hpp

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+#ifndef GRAPHICS_RENDER_BLOCKS_PREVIEW_HPP_
+#define GRAPHICS_RENDER_BLOCKS_PREVIEW_HPP_
+
+#include "../../typedefs.h"
+
+#include <glm/glm.hpp>
+#include <memory>
+
+class Assets;
+class ImageData;
+class Atlas;
+class Framebuffer;
+class Batch3D;
+class Block;
+class Content;
+class Shader;
+class ContentGfxCache;
+
+class BlocksPreview {
+    static std::unique_ptr<ImageData> draw(
+        const ContentGfxCache* cache,
+        Shader* shader,
+        Framebuffer* framebuffer,
+        Batch3D* batch,
+        const Block* block, 
+        int size
+    );
+public:
+    static std::unique_ptr<Atlas> build(
+        const ContentGfxCache* cache,
+        Assets* assets, 
+        const Content* content
+    );
+};
+
+#endif // GRAPHICS_RENDER_BLOCKS_PREVIEW_HPP_