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Introduction to Intel® Graphics Performance Analyzers
Game Optimization Methodology
Install and Launch Intel® GPA
Enable System-wide Time-based GPU Metrics and Enable Query-based Metrics for OpenGL* in Graphics Frame Analyzer for Ubuntu*
Launch Application for Analysis
Configure Analysis Settings
Quick Start with Profiling Unreal Engine* Games
Analyze Desktop Graphics Applications
Instrumentation and Tracing Technology API Support
Intel® GPA Reference
Notices and Disclaimers
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Experiments Pane
In the Experiments pane, you can isolate potential performance bottlenecks in your application by modifying render states of Graphics API.
NOTE:
You can only perform experiments if metrics data is available for your target system; otherwise, the Experiments pane is hidden from view.
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2x2 Textures Identifies potential performance bottlenecks caused by texture maps used in your application. All sampling textures for a scene are replaced with 2x2 texture containing four different colors. |
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Simple Pixel/Fragment Shader Replaces every pixel/fragment shader with the pixel/fragment shader that writes a constant color to all render targets. |
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1x1 Scissor Rect Bypasses pixel processing from the rendering pipeline: if the frame rate does not increase when this experiment is enabled, then a complex geometry or vertex shader is a bottleneck. |
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Disable Event(s) Keeps the selected events from being rendered. This experiment can help you test scene efficiency. |
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Shading Rate Adjusts the shading rate for the selected resource, which can help identify objects that could be rendered with less quality without noticeable visual impact. |
For details, see Run Render State Experiments with Frame Analyzer.