GPU Single-Pass 3D Mesh Section View Rendering
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Solution Overview
Problem
Rendering a section view of a 3D mesh is computationally expensive and results in slow rendering times and high memory consumption due to the need for computationally intensive intersection calculations and subsequent rendering processes.
Innovation Solution
A method that utilizes a Graphical Processing Unit (GPU) to render a section view of a 3D mesh in a single pass by determining if convex polygons intersect a clipping plane, computing intersection points, and storing them in a GPU-writable buffer, allowing for real-time rendering of both the polygons and their intersections as a set of lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional intersection computation methods are used to render a section view of a 3D mesh, then the section profile can be computed, but the rendering process becomes computationally expensive with slow rendering times and high memory consumption
Solution Approach 1:
The patent segments the 3D mesh into convex polygons and processes each polygon independently through GPU parallel computation. By dividing the mesh into discrete convex polygon segments and handling them simultaneously across multiple GPU cores, the system achieves real-time rendering performance while maintaining precise intersection calculations for each segment.
Solution Approach 2:
The patent replaces traditional CPU-based intersection computation with GPU-based parallel processing. By substituting the sequential mechanical computation approach with parallel graphics hardware acceleration, the system dramatically improves rendering speed while maintaining calculation precision through the GPU's specialized geometry processing capabilities.
2Measurement precision
If traditional intersection computation methods are used to render a section view of a 3D mesh, then the section profile can be computed, but memory consumption becomes high
Solution Approach 1:
The patent extracts only the essential intersection information (entry and exit points of the clipping plane) from each convex polygon, storing only these critical data points in GPU memory rather than processing or storing complete polygon data. This extraction approach maintains precise section profile computation while dramatically reducing memory consumption by storing only the minimal necessary geometric information.
3Productivity
If real-time rendering of section views is achieved using GPU, then rendering speed improves, but the complexity of the rendering process increases
Solution Approach 1:
The patent implements dynamic convex polygon generation by triangulating the mesh geometry in real-time and dynamically creating convex polygon segments during GPU processing. This dynamic approach allows the system to adapt to different viewing angles and clipping planes while maintaining real-time performance, managing complexity through the GPU's inherent parallel processing architecture rather than complex CPU-based logic.
Data Source
AI summary
A computer-implemented method for rendering, by a GPU, a section view of a 3D mesh in a single pass. The method includes obtaining the 3D mesh having convex polygons, obtaining a clipping plane and rendering the section view of the 3D mesh by: rendering the convex polygons of the 3D mesh, the rendering of the convex polygons of the 3D mesh comprising, for each convex polygon: determining if the convex polygon intersects the clipping plane. If the convex polygon intersects the clipping plane, computing a pair of points on edges of the convex polygon intersected by the clipping plane, storing the pair of points in a GPU-writable buffer. The method also includes rendering the stored pairs of points in the GPU-writable buffer as a set of lines, the rendering of the section view thereby comprising the rendered convex polygons and the rendered set of lines.