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64 lines
1.9 KiB
64 lines
1.9 KiB
#include <cstddef> |
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#include <benchmark/benchmark.h> |
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#include "engine/render/light_render.hpp" |
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#include "engine/surface.hpp" |
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#include "lighting.h" |
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#include "utils/log.hpp" |
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#include "utils/paths.h" |
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#include "utils/sdl_wrap.h" |
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namespace devilution { |
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namespace { |
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void BM_BuildLightmap(benchmark::State &state) |
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{ |
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std::string benchmarkDataPath = paths::BasePath() + "test/fixtures/light_render_benchmark/dLight.dmp"; |
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FILE *lightFile = std::fopen(benchmarkDataPath.c_str(), "rb"); |
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if (lightFile != nullptr) { |
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std::fread(&dLight[0][0], sizeof(uint8_t), MAXDUNX * MAXDUNY, lightFile); |
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std::fclose(lightFile); |
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} |
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SDLSurfaceUniquePtr sdl_surface = SDLWrap::CreateRGBSurfaceWithFormat( |
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/*flags=*/0, /*width=*/640, /*height=*/480, /*depth=*/8, SDL_PIXELFORMAT_INDEX8); |
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if (sdl_surface == nullptr) { |
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LogError("Failed to create SDL Surface: {}", SDL_GetError()); |
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exit(1); |
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} |
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Surface out = Surface(sdl_surface.get()); |
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Point tilePosition { 48, 44 }; |
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Point targetBufferPosition { 0, -17 }; |
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int viewportWidth = 640; |
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int viewportHeight = 352; |
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int rows = 25; |
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int columns = 10; |
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const uint8_t *outBuffer = out.at(0, 0); |
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uint16_t outPitch = out.pitch(); |
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const uint8_t *lightTables = LightTables[0].data(); |
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size_t lightTableSize = LightTables[0].size(); |
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size_t numViewportTiles = rows * columns; |
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size_t numPixels = viewportWidth * viewportHeight; |
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size_t numBytesProcessed = 0; |
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size_t numItemsProcessed = 0; |
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for (auto _ : state) { |
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Lightmap lightmap = Lightmap::build(tilePosition, targetBufferPosition, |
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viewportWidth, viewportHeight, rows, columns, |
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outBuffer, outPitch, lightTables, lightTableSize); |
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uint8_t lightLevel = *lightmap.getLightingAt(outBuffer + outPitch * 120 + 120); |
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benchmark::DoNotOptimize(lightLevel); |
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numItemsProcessed += numViewportTiles; |
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numBytesProcessed += numPixels; |
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} |
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state.SetBytesProcessed(numBytesProcessed); |
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state.SetItemsProcessed(numItemsProcessed); |
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} |
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BENCHMARK(BM_BuildLightmap); |
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} // namespace |
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} // namespace devilution
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