BufferUploadPerf
Tests repetitively uploading data to the GPU using either SetSubData
or CreateBufferMapped
.
The test harness provides a DawnPerfTestBase
which Derived tests should inherit from. The harness calls Step()
of a Derived class to measure its execution time. First, a calibration step is run which determines the number of times to call Step()
to last approximately kCalibrationRunTimeSeconds
. Then, Step()
is called for the computed number of times, or until kMaximumRunTimeSeconds
is exceeded. kNumTrials
are performed and the results and averages per iteration* are printed. (See DawnPerfTest.h
for the values of the constants).
The results are printed according to the format specified at [chromium]//build/scripts/slave/performance_log_processor.py
*The number of iterations a test performs should be passed to the constructor of DawnPerfTestBase
. The reported times are the total time divided by numSteps * iterationsPerStep
.