Adaptive Display Frame Scheduler for Rendering Bottlenecks
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Solution Overview
Problem
Continuous adaptive synchronization methods can lead to a reduced display refresh rate, causing applications or games to not align with the newly extended VSYNC boundary, which defeats the purpose of having a high refresh rate display panel by limiting the application or game play experience.
Innovation Solution
An adaptive display frame scheduler temporarily reduces and adjusts the display refresh rate, and an adaptive game rendering model decreases rendering resolution in small steps based on extended VSYNC duration until it reaches a minimum level, allowing the GPU rendering rate to catch up, then increases the refresh rate to prevent continuous decrease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous adaptive synchronization is used to extend VSYNC boundary to accommodate GPU rendering delays, then the rendering time constraint is improved, but the display refresh rate is reduced
Solution Approach 1:
The system uses periodic VSYNC signals to synchronize rendering with display refresh. When rendering delays occur, the system temporarily extends the VSYNC boundary in a periodic manner rather than continuously, allowing the display refresh rate to be restored once the GPU catches up. This periodic extension approach maintains reliability during delays while preserving the high refresh rate capability for normal operation.
2Manufacturing precision
If the display refresh rate is reduced to allow GPU to catch up, then the rendering quality is improved, but the gaming experience is limited
Solution Approach 1:
The system dynamically adjusts the display refresh rate based on real-time GPU rendering performance. When the GPU is behind schedule, the refresh rate is temporarily reduced to allow catching up; when the GPU is ahead or on schedule, the refresh rate is increased to provide smooth gaming experience. This dynamic adjustment ensures rendering quality is maintained while minimizing impact on user experience.
3Reliability
If the VSYNC boundary is continuously extended to accommodate rendering delays, then the frame completion is ensured, but the application alignment is lost
Solution Approach 1:
The system continuously monitors GPU rendering performance and uses this feedback to adjust VSYNC boundary extension. When rendering delays are detected, the system extends the VSYNC boundary; when the GPU catches up, the extension is reduced or removed. This feedback-based control ensures frame completion is maintained while preserving application alignment with the display refresh rate.
Data Source
AI summary
The present disclosure relates to methods and apparatus for display processing. The apparatus can monitor a rendering time for each of a plurality of layers in a display frame. The apparatus can also determine whether a rendering time of one or more layers is greater than a maximum rendering time threshold. The apparatus can also adjust a rendering resolution of the one or more layers when the rendering time of the one or more layers is greater than the maximum rendering time threshold. Moreover, the apparatus can reduce the rendering resolution of the one or more layers when the rendering time of the one or more layers is greater than the maximum rendering time threshold. Also, the apparatus can increase the rendering resolution of the one or more layers when the rendering time of the one or more layers is less than a minimum rendering time threshold.