feat: batch component

include/components/batch.h

@@ -0,0 +1,27 @@
+#ifndef COMPONENT_BATCH_H_
+#define COMPONENT_BATCH_H_
+
+#include "renderer/renderer.h"
+
+// requires mesh component
+struct batch {
+    friend class Renderer;
+public:
+    // requires transform component
+    struct item {
+        unsigned int batchId;
+    };
+
+    batch();
+
+    inline const unsigned int id() const { return m_id; }
+protected:
+    static unsigned int LastID;
+private:
+    unsigned int m_id;
+    unsigned int m_instance_vbo { 0 };
+private:
+    void prepare(glm::mat4 *instances, unsigned int count);
+};
+
+#endif // COMPONENT_BATCH_H_