Per-PSO Shader Validation for Lower Graphics Debug Overhead
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Solution Overview
Problem
Current shader validation workflows in graphics processing are limited to global enablement or disablement across all shaders and pipeline state objects (PSOs), leading to increased memory usage, out-of-memory errors, and performance overhead, especially in demanding applications.
Innovation Solution
Implementing per-pipeline state object (PSO) shader validation techniques that allow developers to selectively enable or disable validation operations on individual PSOs, using graphics APIs and environmental variables to control validation states, reducing unnecessary validation and optimizing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shader validation is globally enabled across all shaders and PSOs, then validation coverage is improved, but memory usage and performance overhead increase
Solution Approach 1:
The patent divides shader validation into per-PSO segments rather than global validation. Each PSO has its own validation variable (e.g., PSO shader validation variable) that can be independently controlled. This segmentation allows validation to be applied only where needed, reducing overall memory usage while maintaining validation coverage for critical PSOs.
Solution Approach 2:
The patent implements local quality control by allowing different validation states for different PSOs. Developers can selectively enable validation for specific PSOs that require it while disabling it for others, creating a non-uniform validation strategy that optimizes both memory usage and validation coverage based on local needs.
2Reliability
If shader validation is globally enabled across all shaders and PSOs, then validation coverage is improved, but performance overhead increases
Solution Approach 1:
By segmenting validation control to the PSO level, the system can apply validation only to specific PSOs that require it, rather than forcing validation on all PSOs. This reduces the cumulative performance overhead while maintaining validation coverage for PSOs where it is most needed.
Solution Approach 2:
The patent applies partial action by enabling validation for only a subset of PSOs rather than all PSOs. This partial validation approach provides sufficient validation coverage for critical areas while avoiding the excessive performance cost of validating every single PSO.
3Difficulty of detecting and measuring
If shader validation is enabled for all PSOs, then debugging capability is improved, but compilation time increases
Solution Approach 1:
The patent enables developers to apply different validation qualities to different PSOs based on their debugging needs. Critical PSOs can have validation enabled for thorough debugging, while less critical PSOs can have validation disabled to save compilation time, creating an optimized compilation strategy.
4Quantity of substance
If shader validation is selectively enabled per PSO, then memory usage is reduced, but system complexity increases
Solution Approach 1:
The patent implements self-service by allowing developers to directly control validation per PSO through simple variables and API calls. The system automatically manages the validation state for each PSO based on these inputs, eliminating the need for complex centralized control mechanisms while achieving fine-grained validation management.
Data Source
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AI summary
According to some graphics processing frameworks, so-called "pipeline state objects" (or "PSOs") may be used to describe how a rendering pipeline will behave in each pipeline stage when rendering graphics (and/or performing compute pipeline operations). Often, during the development or debugging of a game or other type of application, developers may prefer to focus on validating only a specific subset of PSOs. However, current shader validation workflow designs may only be able to be enabled (or disabled) globally, i.e., across all shaders and PSOs, which is preventing these desired per-PSO shader validation workflows from being possible. In addition to improving performance, selective per-PSO shader validation techniques allow for even more demanding applications, e.g., applications that push device hardware to its limits, to still be able to benefit from selective validation of PSOs, e.g., PSOs that are currently being tested or suspected to be the cause of problems in an application.