Symmetrical Vertex Reconstruction for Graphics Bandwidth Reduction
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Solution Overview
Problem
The speed of rendering complex computer graphics is limited by the bandwidth constraints in graphics processing subsystems, leading to bottlenecks due to the need to transmit excessive vertex data through the pipeline.
Innovation Solution
Leveraging symmetrical characteristics of vertices to reconstruct groups using a subset of vertices and control data, which allows for data compression and reduced bandwidth requirements, utilizing a geometry shader to compute additional vertices for reconstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all vertices are sent through the pipeline, then complete vertex data is available for rendering, but bandwidth requirements increase and bottlenecks occur
Solution Approach 1:
The patent extracts only the essential subset of vertices that define the symmetrical group, removing redundant vertex data from the transmission stream. By sending only the reference vertices and symmetry parameters, the system maintains complete rendering capability while reducing data volume by up to 75% for highly symmetrical objects.
Solution Approach 2:
The patent transforms the representation of vertex data from explicit coordinates for all vertices to a compact parameter set defining symmetry operations. Instead of transmitting N vertex coordinates, the system transmits a small number of reference vertices plus symmetry transformation parameters, dramatically reducing bandwidth requirements.
2Quantity of substance
If vertex data is compressed using symmetry, then bandwidth requirements decrease, but processing complexity increases
Solution Approach 1:
The patent implements self-service by enabling the graphics pipeline to automatically reconstruct symmetrical vertices using built-in geometry shaders and transformation matrices. The system leverages existing GPU capabilities for matrix multiplication and vertex generation, avoiding the need for external compression/decompression hardware while achieving significant data reduction.
Solution Approach 2:
The patent performs preliminary identification of symmetrical vertex groups and establishment of transformation parameters before the rendering pipeline processes the data. By pre-computing symmetry relationships and organizing vertex data into symmetrical groups, the system prepares the data structure to enable efficient reconstruction during rendering without adding runtime complexity.
3Productivity
If less vertex data is transmitted, then bandwidth bottlenecks are reduced, but data transmission completeness may be compromised
Solution Approach 1:
The patent introduces symmetry transformation matrices and control parameters as intermediaries between the compressed vertex data and the full vertex set. These intermediary elements enable the reconstruction of missing vertices during the rendering process, ensuring that no visual information is lost despite transmitting only a fraction of the original vertex data.
Solution Approach 2:
The patent creates virtual copies of reference vertices through symmetry transformations during the rendering process. Instead of transmitting actual duplicate vertex data, the system generates copies on-demand using transformation operations, maintaining data completeness while minimizing transmission requirements.
Data Source
AI summary
The symmetrical properties of a group of vertices are leveraged to reconstruct the group using vertex data for a subset of the vertices and a set of control data. The subset of vertices is symmetrical to one or more other subsets of vertices in the group, and the control data includes information to reconstruct the one or more other subsets using the vertex data for the first set of vertices and symmetrical characteristics of the group. In some embodiments, reconstruction is performed using a geometry shader in a graphics processor to compute the additional vertices.