In-Place Shader Debugging via Interception Layer
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Solution Overview
Problem
Current methods for debugging and performance tuning in graphics applications are inefficient due to the lengthy process of re-compiling the entire application and identifying the source of anomalies in large shader codebases, which requires exiting and reproducing specific conditions.
Innovation Solution
An interception layer is introduced between the software application and the API to intercept and modify shader source code, allowing developers to pause, modify, and re-compile only the affected shader code without exiting the application, enabling in-place debugging and performance tuning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the traditional method of exiting the application, modifying shader code, re-compiling the entire application, and running again is used, then the shader code can be modified and recompiled, but the turnaround time becomes excessively long (several minutes to several hours)
Solution Approach 1:
The patent segments the compilation process by intercepting only the modified shader source code portions rather than re-compiling the entire application. The hot swapping mechanism allows individual shader modules to be compiled and swapped independently, dividing the monolithic re-compilation task into smaller, parallelizable units that can be processed much faster.
Solution Approach 2:
The patent performs preliminary actions by pre-compiling shader code variants and storing them in memory before they are needed. When a modification is made, the system can quickly swap between pre-compiled versions without triggering a full re-compilation, effectively preparing multiple versions in advance for rapid switching.
2Reliability
If the entire application is re-compiled to modify shader code, then the modified shader can be tested, but the complexity of the re-compilation process increases
Solution Approach 1:
The patent introduces an intermediary hot swapping mechanism that sits between the shader source code and the compilation process. This intermediary layer captures modified shader code, manages the compilation of only the affected portions, and handles the swapping of shader versions, thereby simplifying the overall process by isolating the complexity from the main application flow.
3Measurement precision
If the developer must reproduce specific conditions (location, camera angle, settings) to test shader modifications, then the anomaly can be verified, but the ease of operation decreases
Solution Approach 1:
The patent enables continuous debugging operations by allowing the application to run uninterrupted while shader modifications are made and applied in real-time. The hot swapping mechanism maintains continuous shader execution without requiring the application to pause or restart, preserving the continuous flow of useful action while enabling modifications.
Data Source
AI summary
One embodiment of the present invention sets forth a system that allows a software developer to perform shader debugging and performance tuning. The system includes an interception layer between the software application and the application programming interface (API). The interception layer is configured to intercept and store source code versions of the original shaders included in the application. For each object in the frame, the interception layer makes shader source code available to the developer, so that the developer can modify the source code as needed, re-compile only the modified shader source code, and run the application. Consequently, shader debugging and performance tuning may be carried out in a manner that is more efficient and effective relative to prior art approaches.