Programmable Cache Line for Texture Memory Bandwidth Reduction
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Solution Overview
Problem
Existing texture mapping techniques consume excessive memory bandwidth and power due to unnecessary reading of texture map data, leading to increased consumer costs and reduced user experience.
Innovation Solution
Implementing a programmable cache line to selectively read and store only the required data from a texture map based on modifications, such as rotations or scaling, thereby reducing memory bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If texture map is stored as lines in memory cache for translation operations, then texture mapping functionality is achieved, but memory bandwidth is excessively consumed due to reading more data than required
Solution Approach 1:
The texture map is segmented into individual lines stored in memory, and the cache line is segmented to read only the specific portion of data required for the current texture mapping operation. This segmentation allows the system to read minimal necessary data from memory rather than entire lines, reducing memory bandwidth consumption while maintaining texture mapping functionality.
Solution Approach 2:
The cache line is designed with local quality by reading only the specific portion of texture data required for the current operation rather than reading entire lines. This allows different portions of the texture map to be handled differently based on actual usage requirements, optimizing memory bandwidth utilization.
2Ease of operation
If entire texture map lines are read from memory, then texture translation operations can be performed, but power consumption increases due to unnecessary data transfer
Solution Approach 1:
The invention extracts only the necessary portion of texture data from the entire line and reads it into the cache. By taking out only the required data rather than reading the complete line, the system maintains texture translation capability while significantly reducing power consumption associated with data transfer.
Solution Approach 2:
Instead of reading the complete texture line (excessive action), the system reads only the partial portion of data actually required for the current texture mapping operation. This partial action approach reduces power consumption while still providing sufficient data for successful texture translation.
3Adaptability or versatility
If more texture map data is read to account for translation operations, then translation flexibility is maintained, but memory utilization increases for unnecessary bits
Solution Approach 1:
The cache line reading operation is made dynamic by adjusting the read size based on the specific translation operation requirements. Rather than statically reading entire lines, the system dynamically determines and reads only the necessary portion of data, optimizing memory utilization while maintaining translation flexibility.
Solution Approach 2:
The system changes the parameter of data read size from fixed (entire line) to variable (only required portion). This parameter change allows the system to adapt memory utilization to actual transaction needs while maintaining the flexibility required for various texture translation operations.
Data Source
AI summary
A system and method for memory bandwidth reduction utilized a programmable cache line. The method includes generating an instruction to render a modified texture based on a modification of a texture, the texture stored as a plurality of lines in a memory, each line addressable by a unique address; determining an amount of data to read from a first line of a texture based on the modification; configuring a programmable cache line to read into a cache at least the determined amount of data from a unique address corresponding to the first line; and storing at least a portion of the determined amount of data in a first line of a framebuffer.