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tracetooltests

This is a repository of tests designed for testing tracing tools.

Building

To build for linux desktop:

You may need to install the LunarG SDK first to get up to date headers.

mkdir build
cd build
cmake ..
make

See below for selecting your window system backend.

Linux cross-compile

mkdir build_name
cd build_name

Then ONE of the following for ARMv7 or ARMv8, respectively:

cmake -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain/fbdev_arm.cmake ..
cmake -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain/fbdev_aarch64.cmake ..

Then complete as normal with:

make

Building for other backends

The default backend is fbdev, which is not supported on many systems. The change backend, pass -DWINDOWSYSTEM= where the backend can be one of the following:

  • sdl
  • fbdev
  • pbuffers
  • x11

The Vulkan tests are currently not using any window system.

Modifying runs

Most tests have command line parameters. To see which, run it with --help

These environment variables can be set to modify the tests:

  • TOOLSTEST_TIMES - the number of frames or loops to run
  • TOOLSTEST_SANITY - whether or not to inject sanity checking assert calls
  • TOOLSTEST_NULL_RUN - if set, we will skip testing whether results make sense; useful for generating test runs on fake drivers (GLES only for now)
  • TOOLSTEST_STEP - enter step mode where we wait for keypress to proceed to the next frame; while 'q' will exit immediately (GLES only for now)
  • TOOLSTEST_WINSYS - change Vulkan winsys; only valid value for now is "headless", which will force the headless extension to be used (Vulkan only for now)
  • TOOLSTEST_GPU - select which physical device to use by index value (Vulkan only)
  • TOOLSTEST_VALIDATION - enable validation layer (Vulkan only)

Note that for fake driver runs where TOOLSTEST_NULL_RUN is required and traces are generated, any traces containing compute jobs will not contain the correct buffer contents. Not all tests support all environment variables. For the vulkan tests, usually better to look at their command line options.

Private Vulkan extensions

VK_TRACETOOLTEST_checksum_validation - defines a new command vkAssertBufferTRACETOOLTEST(VkDevice device, VkBuffer buffer) which injects and returns an Adler32 checksum of the given buffer into the command stream. This can be used to validate tools like tracers. vkAssertImageTRACETOOLTEST(VkDevice device, VkImage image) planned for later.

VK_TRACETOOLTEST_layer_object_property - defines a new command void vkGetLayerObjectPropertyTRACETOOLTEST(VkInstance instance, VkObjectType objectType, uint64_t objectHandle, VkLayerObjectPropertyTRACETOOLTEST valueType) which can request layer internal information from the layer supporting this extension.

VK_TRACETOOLTEST_trace_helpers - various helper commands for tracing tools. Defines ways to mark buffer device addresses and shader group handles in memory for identification by tools.

Private GLES extensions

TBD

Known issues

  • The multi-surface tests do not work with the SDL backend.

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