Intel® Graphics Performance Analyzers User Guide

User Guide

  • 2021.3
  • 09/23/2021
  • Public Content
Contents

API Log Pane

The
API Log
 pane consists of the following items:
  • API Log
     toolbar
  • API Log
     tab
  • Pixel History
     tab
  • Resource History
     tab
  • Frame Statistics
     tab

API Log Toolbar

Use the
API Log
 toolbar to manage the
API Log
 pane:
  • Type Filter Expression
     field filters graphics API functions by name or parameters. Saves previous search keywords. You can use the
    Type Filter Expression
     field to find specific events by running Graphics Frame Analyzer plugins.
  • Full API Log
     button displays in the
    API Log
     tab all functions used in the frame, in the call order.
    By default, the
    API Log
     tab shows only graphics API functions that produce any GPU activity, such as draw calls or clear calls. These graphics API functions are also called "events".
  • Collapse All Groups
     button closes all the groups in the
    API Log
     tab, if available.
  • Export
    API Log
     button saves the API log in CSV format. You can also save the API log by pressing Ctrl+S.

API Log Tab

Use the
API Log
 tab to do the following:
  • Review the list of all functions, in the GPU execution order
  • Review parameters passed to each function
  • Create custom regions
  • To facilitate debugging, you can specify object labels for various resources in your application, such as textures, buffers, shaders, by using special functions of graphics APIs.
  • Graphics Frame Analyzer displays object labels in the
    API Log
     pane and
    Resources
     pane.
When you select an event in the
Main
 bar chart, Graphics Frame Analyzer highlights the corresponding functions in the
API Log
 tabs. For easier navigation, Graphics Frame Analyzer marks the functions that require your attention with colored bars. You can click the bar to navigate directly to the marked function:
  • Green bars denote user-defined markers inserted in the application code or regions with the same render target or shader sets. Grouping can be selected using the
    Group By
     drop-down button on the
    Visualization Settings
     toolbar.
  • (OpenGL-specific) Orange bars denote functions that caused warnings.
  • (OpenGL-specific) Red bars denote functions that caused errors.
When you select a function in the list, Graphics Frame Analyzer updates all other panes in
Profiling View
 to reflect the state of the frame for the function call. You can use
Up/Down
 arrow keys or
Page Up/Page Down
 keys to navigate between the displayed functions.
To create a custom region, do the following:
  1. In the Graphics Frame Analyzer
    Main
     toolbar, select
    Custom Regions
     from the
    Group By
     drop-down list.
  2. In the
    API Log
     pane, select an event or a group of sequential events, and click
    +
    .
  3. Enter a name for the created custom region.
    To delete the created custom region, click
    -
    . To add a nested list inside the created custom region, click
    +
    .

Pixel History Tab

The
Pixel History
 tab shows only the events that contribute into the pixel specified in
Resources
 pane.
To analyze pixel history, select the render target in
Resource List
and click on the pixel you want to analyze in
Resource Viewer
. Graphics Frame Analyzer marks the selected pixel with a crosshair and filters the API calls to display only those events that affected this pixel. The colored boxes next to each call show the color written into frame buffer after the API call execution. If the call has been rejected at one of the pipeline stages, the box is displayed next to the call.
You can use
Up/Down
 arrow keys or
Page Up/Page Down
 keys to navigate between the displayed functions.

Resource History Tab

The
Resource History
 tab shows only the events that use the resource selected from
Resource List
. To enable the resource history, you can:
  • Click
    Show All Resources
     button in the
    Resources
     pane, double-click any resource in the
    Resource List
    , and click the button
  • Choose any resource from the
    Select Resource
     drop-down list in the
    Resource History
     tab
You can use
Up/Down
 arrow keys or
Page Up/Page Down
 keys to navigate between the displayed functions.

Frame Statistics Tab

The
Frame Statistics
 tab shows the number of calls of each type in the frame.
You can use
Up/Down
 arrow keys or
Page Up/Page Down
 keys to navigate between the displayed functions.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.