Graphics Texture Processing Multiplexer Segmentation
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Solution Overview
Problem
The existing process of providing texture data elements for texture processing operations in graphics processing systems is inefficient, leading to increased circuit size and energy consumption due to the need to select input texture data elements from the entire texture data array, which can be improved by selecting from predefined subsets of texture data elements.
Innovation Solution
The method involves selecting input texture data elements from predefined subsets of positions within the texture data array, using multiplexer trees to reduce the circuit size and energy consumption by limiting the selection to specific subsets, and optionally reordering the data elements or weights to match the required order for texture processing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If texture data elements are selected from the entire texture data array using multiplexer trees, then any texture data element can be accessed, but the circuit size and energy consumption increase
Solution Approach 1:
The texture data array is divided into multiple banks, and the selection process is segmented into two stages: first selecting a bank, then selecting the specific texture data element within that bank. This segmentation reduces the complexity of the multiplexer trees by limiting the selection scope at each stage.
Solution Approach 2:
The patent implements a nested selection structure where bank selection multiplexers operate at an outer level and element selection multiplexers operate at an inner level within each selected bank. This nested arrangement allows the system to maintain full accessibility while reducing the size of individual multiplexer trees.
2Adaptability or versatility
If texture data elements are selected from the entire texture data array using multiplexer trees, then any texture data element can be accessed, but energy consumption increases
Solution Approach 1:
The selection process is segmented into bank selection and element selection stages. By dividing the large-scale selection into smaller, sequential selection tasks, the energy consumption of each multiplexer operation is reduced, while the overall accessibility is maintained.
Solution Approach 2:
The patent extracts and processes the bank selection information separately from the element selection information. By taking out the bank selection step as a preliminary operation, the system reduces the energy required for the subsequent element selection within the context of the entire texture data array.
3Ease of operation
If all read ports are connected to all texture data elements through multiplexer trees, then any texture data element can be selected, but the number of connections and circuit complexity increase
Solution Approach 1:
The connection structure is segmented into bank-level connections and element-level connections. Each read port is connected to all banks, but within each bank, connections are limited to element selection. This segmentation maintains selection flexibility while dramatically reducing the total number of connections compared to a fully connected structure.
Solution Approach 2:
The connection architecture implements a nested structure where bank selection connections encompass element selection connections. The outer layer of connections handles bank selection, and the inner layer handles element selection within the selected bank, creating a hierarchical connection pattern that reduces overall complexity.
Data Source
AI summary
When performing texture processing operations in a graphics processing system, for a texture processing operation that requires M input texture data elements from an array of texture data elements, each of the M texture data elements is selected from a different set of texture data elements having a different set of positions within the texture data array. The texture processing operation is then performed using the M texture data elements.