From 30df048c8f318c6f31dcb122b4983d65b4e6db24 Mon Sep 17 00:00:00 2001 From: "Steinar H. Gunderson" Date: Sun, 26 Nov 2017 13:56:19 +0100 Subject: [PATCH] Add a benchmark for calculate_scaling_weights(). --- resample_effect_test.cpp | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/resample_effect_test.cpp b/resample_effect_test.cpp index 7955c5b..b47bd57 100644 --- a/resample_effect_test.cpp +++ b/resample_effect_test.cpp @@ -9,6 +9,7 @@ #include "effect_chain.h" #include "flat_input.h" #include "image_format.h" +#include "init.h" #include "resample_effect.h" #include "test_util.h" @@ -471,6 +472,24 @@ BENCHMARK_CAPTURE(BM_ResampleEffectFloat, Float32Upscale, GAMMA_LINEAR, "fragmen BENCHMARK_CAPTURE(BM_ResampleEffectInt8, Int8Downscale, GAMMA_REC_709, "fragment")->Args({1280, 720, 640, 360})->Args({1280, 720, 320, 180})->Args({1280, 720, 321, 181})->UseRealTime()->Unit(benchmark::kMicrosecond); BENCHMARK_CAPTURE(BM_ResampleEffectFloat, Float32Downscale, GAMMA_LINEAR, "fragment")->Args({1280, 720, 640, 360})->Args({1280, 720, 320, 180})->Args({1280, 720, 321, 181})->UseRealTime()->Unit(benchmark::kMicrosecond); +void BM_ComputeScalingWeights(benchmark::State &state) +{ + constexpr unsigned src_size = 1280; + constexpr unsigned dst_size = 35; + int old_precision = movit_texel_subpixel_precision; + movit_texel_subpixel_precision = 64; // To get consistent results across GPUs; this is a CPU test. + + // One iteration warmup to make sure the Lanczos table is computed. + calculate_scaling_weights(src_size, dst_size, 0.999f, 0.0f); + + for (auto _ : state) { + ScalingWeights weights = calculate_scaling_weights(src_size, dst_size, 0.999f, 0.0f); + } + + movit_texel_subpixel_precision = old_precision; +} +BENCHMARK(BM_ComputeScalingWeights)->Unit(benchmark::kMicrosecond); + #endif } // namespace movit -- 2.39.2