Shader Resource Slot Allocation via Control Flow Invariants
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Solution Overview
Problem
Existing graphics processing technologies face challenges in efficiently managing resources across multiple passes of a pipeline shader program, leading to potential memory-related issues and performance degradation.
Innovation Solution
The technique involves allocating a first set of resource slots for a first execution instance of a pipeline shader program, correlating these slots with graphics pipeline passes, and then assigning these slots to subsequent execution instances based on the correlation, thereby optimizing resource reuse across frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resources are allocated for each execution instance of a pipeline shader program, then resource availability is ensured, but memory overhead and allocation overhead increase
Solution Approach 1:
The system performs preliminary analysis of the pipeline shader program to identify invariant resources before execution. Resource slots are pre-allocated and tracked based on control flow analysis, so that when the shader executes multiple passes, the same resources can be reused without repeated allocation. This preliminary preparation eliminates the need for dynamic resource allocation during each execution instance.
Solution Approach 2:
The system changes the state of resource slots from unallocated to allocated based on control flow invariant identification. By analyzing control flow paths and determining which resources remain constant across different execution paths, the system can mark these resources as invariant and reuse their slots across multiple passes, thereby reducing memory overhead while ensuring availability.
2Reliability
If resources are reallocated for each frame, then resource freshness is ensured, but processing time increases
Solution Approach 1:
The system performs control flow analysis beforehand to identify which resources are invariant across execution paths. This preliminary identification allows the system to skip reallocation of these invariant resources in subsequent frames, as their slots are already properly assigned. Only non-invariant resources undergo reallocation, significantly reducing the total time spent on resource management.
Solution Approach 2:
The system recovers resource slots from previous execution instances by identifying control flow invariants. Instead of discarding and reallocating all resources each frame, the system recovers slots for invariant resources and reuses them. This recovery mechanism maintains resource freshness for changing resources while avoiding redundant allocation operations for stable resources.
3Measurement precision
If comprehensive resource tracking is implemented, then resource management accuracy is improved, but system complexity increases
Solution Approach 1:
The system segments resource tracking by creating individual resource slot entries with specific attributes (allocated state, associated resource, control flow path). Each resource slot is tracked independently based on its allocation state and control flow characteristics. This segmentation allows precise tracking of only the necessary resources without requiring a monolithic complex tracking system.
Solution Approach 2:
The system performs preliminary control flow analysis to identify invariant resources before detailed tracking begins. This preliminary step filters out resources that don't require detailed tracking across all paths, reducing the overall tracking burden. By pre-identifying which resources need monitoring based on control flow invariance, the system achieves accurate tracking with reduced complexity.
Data Source
AI summary
In order to efficiently process graphics data, operations are performed including allocating a first set of resource slots for a first execution instance of a pipeline shader program; correlating the first set of resource slots with graphics pipeline passes; and on a second execution instance of the pipeline shader program, assigning resource slots, from the first set of resource slots, to the graphics pipeline passes, based on the correlating.