3D Graphics Clipping Plane Adjustment for Viewpoint Errors
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Solution Overview
Problem
Existing 3D graphics processing technologies face errors when the view point is located between the near and far clipping planes, leading to inefficiencies and reduced precision in graphics processing, particularly in fast-moving game scenes.
Innovation Solution
A method is introduced to determine the relative positions of the view point, near clipping plane, and far clipping plane in advance, setting a correct view field and executing a near clipping procedure using a second near clipping plane to accurately clip the stereoscopic object between the near clipping plane and the view point, thereby enhancing the accuracy and speed of graphics processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the view point is located between the near clipping plane and the far clipping plane, then the graphics processing can handle fast-moving scenes, but graphics processing errors occur and precision is reduced
Solution Approach 1:
The patent applies preliminary action by determining in advance whether the viewpoint is located between the near and far clipping planes before executing the clipping procedure. This advance determination allows the system to set appropriate clipping parameters and select the correct clipping algorithm beforehand, preventing processing errors and maintaining precision even in fast-moving scenes where the viewpoint may be within the clipping volume.
2Reliability
If a driver program or software algorithm is used to determine depth of field and re-set graphics processing parameters, then the viewpoint between clipping planes issue is resolved, but real-time graphics processing efficiency is impacted
Solution Approach 1:
The patent implements self-service by integrating the viewpoint position determination and clipping plane configuration directly into the hardware graphics processing pipeline. The system automatically determines whether the viewpoint is between clipping planes and configures the appropriate clipping parameters without requiring external driver programs or software algorithms, thus maintaining both correctness and real-time processing efficiency.
3Reliability
If a video card with far clipping procedure support is adopted, then the viewpoint between clipping planes problem is resolved, but hardware resources are consumed and clipping precision is reduced
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the clipping plane parameters based on the viewpoint position. When the viewpoint is determined to be between the near and far clipping planes, the system modifies the clipping parameters to use the near clipping plane as the reference, avoiding the need for complex far clipping hardware while maintaining processing correctness and precision.
Data Source
AI summary
A three-dimensional (3D) graphics clipping method, a 3D graphics displaying method, and a 3D graphics processing apparatus using the same are provided. The 3D graphics clipping method includes following steps. A plurality of vertexes of a triangle is obtained, wherein a 3D object is constructed by using a plane of the triangle. Whether a view point is located between a first near clipping plane and a far clipping plane is determined. A second near clipping plane is set according to the determination result, and a view field is set between the second near clipping plane and the far clipping plane. A near clipping procedure is executed on the triangle according to the second near clipping plane. In the 3D graphics clipping method, a correct view field is determined in advance so that a graphics processing procedure is efficiently sped up and the accuracy of the near clipping procedure is increased.