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Packages/com.omarator.mosissdk/Plugins/Android/cpp/texture_backend.h

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+#pragma once
+
+#include <android/hardware_buffer.h>
+#include <cstdint>
+
+/**
+ * Abstract interface for texture backends.
+ * Allows swapping between OpenGL and Vulkan implementations at runtime.
+ */
+class ITextureBackend
+{
+public:
+    virtual ~ITextureBackend() = default;
+
+    /**
+     * Create texture resources from a hardware buffer.
+     * @param buffer The AHardwareBuffer from the Mosis service
+     * @return true if creation succeeded
+     */
+    virtual bool Create(AHardwareBuffer* buffer) = 0;
+
+    /**
+     * Update the texture (blit from source to destination).
+     * Called each frame when a new frame is available.
+     */
+    virtual void Update() = 0;
+
+    /**
+     * Destroy all texture resources.
+     */
+    virtual void Destroy() = 0;
+
+    /**
+     * Get the native texture pointer for Unity.
+     * For OpenGL: GLuint cast to void*
+     * For Vulkan: VkImage cast to void*
+     */
+    virtual void* GetNativeTexturePtr() = 0;
+
+    /**
+     * Get texture dimensions.
+     */
+    virtual int GetWidth() const = 0;
+    virtual int GetHeight() const = 0;
+
+    /**
+     * Check if the backend is Vulkan-based.
+     * Unity needs this to know how to interpret the native pointer.
+     */
+    virtual bool IsVulkan() const = 0;
+};