Provided are an apparatus and method for detecting ray-triangle collision for ray-tracing. The apparatus includes a ray bundle memory for storing ray bundle, a geometry data memory for storing geometry triangle data, a hierarchy structure memory for storing space subdivision and bounding volume hierarchy structure information, a virtual pager for receiving the geometry triangle data, the space subdivision and bounding volume hierarchy structure information, and the bounding hierarchical structure information by rearranging geometry triangle data by final end nodes, a virtual paged memory for receiving the rearranged data, forming page memories, and storing triangle data by pages, a virtual page cache for processing the page data in a pipe line manner, and previously storing a page memory for collision detection, a ray-triangle collision detection pipe for detecting a ray-triangle collision based on the page memory and the ray bundle, and an output memory for storing the ray-triangle collision detection result.
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