Analyzing gpu performance
PIX has a various features for capturing and analyzing your GPU performance.
PIX API objects
The PIX API Objects tab shows you the various parameters that are passed for every API as shown in the following figure.
PIX gpu bottlenecks
PIX has the capability to display GPU bottlenecks based on utilization of the hardware.
PIX bvh viewer
PIX allows visualization of the bounding-volume-hierarchy (BVH) structures used during raytracing workloads.
PIX counters
You can analyze, sort, filter, and graph PIX software counters and hardware counters.
Dr. PIX
Dr. PIX provides some detailed analysis of a selected named event or draw call.
PIX edit and continue
Shader Edit and Continue (as shown in the following figure) provides the ability to modify high-level shader language (HLSL) code, GPU…
PIX edits
With PIX Edit and Continue, you can modify high-level shader language (HLSL) code, GPU instructions, and the Compiler Options.
PIX event details
The PIX Event Details tab can be used to look at the parameter values passed to an event in more detail.
PIX gpu captures
GPU Captures are used to record all of the inputs and commands sent to the GPU, and then replay them for later analysis and experimentation.
PIX executeindirect analysis support
Analysis of ExecuteIndirect calls in PIX poses challenges.
Input assembly
IA is the input assembly stage in PIX.
Gpu capture
After you’ve captured your GPU data or opened a previous capture, you should see the Overview page.
Pipeline view
The Pipeline view is a great place to see the graphics pipeline in action.
PIX resources
You can view resources and resource usage in PIX.
PIX gpu timeline
The Timeline tab (as shown in the following figure) is where you can see how long each API call took.
PIX gpu timing
PIX displays timing for every Global ID in the Events view.
Memory viewer
This view is used to display the console’s memory at a specified address and size, and a customizable formatter.
PIX mesh viewer
Use the Mesh viewer in PIX to compare its rendering to expected output and quickly locate discrepancies as shown in the following figure.
PIX pipeline states
The PIX Pipeline States tab shows the list of all PSOs for the current GPU capture.
PIX resources view
The Resources view provides general information about the resources in your capture as shown in the following figure.
PIX shader debugging
To debug shaders, PIX needs to locate PDBs for the shaders.
Shader pdbs in PIX
PIX has the capability to load shader PDBs (symbols) to enable additional functionality.
PIX shader trace (XBOX one)
This topic describes how to analyze the shader assembler instructions to determine performance bottlenecks.
PIX shader trace (XBOX series x|s)
PIX has the capability to view the execution of waves and instructions on the GPU for XBOX Series X|S GPU captures.
State view
The State View shows information about the Direct3D state for each event with a Global ID, and also the hardware’s state, including…
PIX table of hardware counters
The following counters can be examined in PIX.
PIX texture mip statistics
The PIX Texture Mip Statistics tab shows the list of textures sampled from the graphics queue for the current GPU capture.
PIX texture viewer
The PIX Texture viewer is used alongside the Pipeline view to visualize resources as shown in the following screenshot.
PIX variable rate shading (vrs)
There are multiple areas in PIX where various state, API, and resource information can be found.
Using PIX with shaders
Use PIX to analyze and debug shader performance.