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codecbench.cpp
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codecbench.cpp
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#include "../src/meshoptimizer.h"
#include <vector>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#ifdef __EMSCRIPTEN__
#include <emscripten.h>
double timestamp()
{
return emscripten_get_now() * 1e-3;
}
#elif defined(_WIN32)
struct LARGE_INTEGER
{
__int64 QuadPart;
};
extern "C" __declspec(dllimport) int __stdcall QueryPerformanceCounter(LARGE_INTEGER* lpPerformanceCount);
extern "C" __declspec(dllimport) int __stdcall QueryPerformanceFrequency(LARGE_INTEGER* lpFrequency);
double timestamp()
{
LARGE_INTEGER freq, counter;
QueryPerformanceFrequency(&freq);
QueryPerformanceCounter(&counter);
return double(counter.QuadPart) / double(freq.QuadPart);
}
#else
double timestamp()
{
timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return double(ts.tv_sec) + 1e-9 * double(ts.tv_nsec);
}
#endif
struct Vertex
{
uint16_t data[16];
};
uint32_t murmur3(uint32_t h)
{
h ^= h >> 16;
h *= 0x85ebca6bu;
h ^= h >> 13;
h *= 0xc2b2ae35u;
h ^= h >> 16;
return h;
}
void benchCodecs(const std::vector<Vertex>& vertices, const std::vector<unsigned int>& indices, double& bestvd, double& bestid, bool verbose)
{
std::vector<Vertex> vb(vertices.size());
std::vector<unsigned int> ib(indices.size());
std::vector<unsigned char> vc(meshopt_encodeVertexBufferBound(vertices.size(), sizeof(Vertex)));
std::vector<unsigned char> ic(meshopt_encodeIndexBufferBound(indices.size(), vertices.size()));
if (verbose)
printf("source: vertex data %d bytes, index data %d bytes\n", int(vertices.size() * sizeof(Vertex)), int(indices.size() * 4));
for (int pass = 0; pass < (verbose ? 2 : 1); ++pass)
{
if (pass == 1)
meshopt_optimizeVertexCacheStrip(&ib[0], &indices[0], indices.size(), vertices.size());
else
meshopt_optimizeVertexCache(&ib[0], &indices[0], indices.size(), vertices.size());
meshopt_optimizeVertexFetch(&vb[0], &ib[0], indices.size(), &vertices[0], vertices.size(), sizeof(Vertex));
vc.resize(vc.capacity());
vc.resize(meshopt_encodeVertexBuffer(&vc[0], vc.size(), &vb[0], vertices.size(), sizeof(Vertex)));
ic.resize(ic.capacity());
ic.resize(meshopt_encodeIndexBuffer(&ic[0], ic.size(), &ib[0], indices.size()));
if (verbose)
printf("pass %d: vertex data %d bytes, index data %d bytes\n", pass, int(vc.size()), int(ic.size()));
for (int attempt = 0; attempt < 50; ++attempt)
{
double t0 = timestamp();
int rv = meshopt_decodeVertexBuffer(&vb[0], vertices.size(), sizeof(Vertex), &vc[0], vc.size());
assert(rv == 0);
(void)rv;
double t1 = timestamp();
int ri = meshopt_decodeIndexBuffer(&ib[0], indices.size(), 4, &ic[0], ic.size());
assert(ri == 0);
(void)ri;
double t2 = timestamp();
double GB = 1024 * 1024 * 1024;
if (verbose)
printf("decode: vertex %.2f ms (%.2f GB/sec), index %.2f ms (%.2f GB/sec)\n",
(t1 - t0) * 1000, double(vertices.size() * sizeof(Vertex)) / GB / (t1 - t0),
(t2 - t1) * 1000, double(indices.size() * 4) / GB / (t2 - t1));
if (pass == 0)
{
bestvd = std::max(bestvd, double(vertices.size() * sizeof(Vertex)) / GB / (t1 - t0));
bestid = std::max(bestid, double(indices.size() * 4) / GB / (t2 - t1));
}
}
}
}
void benchFilters(size_t count, double& besto8, double& besto12, double& bestq12, double& bestexp, bool verbose)
{
// note: the filters are branchless so we just run them on runs of zeroes
size_t count4 = (count + 3) & ~3;
std::vector<unsigned char> d4(count4 * 4);
std::vector<unsigned char> d8(count4 * 8);
if (verbose)
printf("filters: oct8 data %d bytes, oct12/quat12 data %d bytes\n", int(d4.size()), int(d8.size()));
for (int attempt = 0; attempt < 50; ++attempt)
{
double t0 = timestamp();
meshopt_decodeFilterOct(&d4[0], count4, 4);
double t1 = timestamp();
meshopt_decodeFilterOct(&d8[0], count4, 8);
double t2 = timestamp();
meshopt_decodeFilterQuat(&d8[0], count4, 8);
double t3 = timestamp();
meshopt_decodeFilterExp(&d8[0], count4, 8);
double t4 = timestamp();
double GB = 1024 * 1024 * 1024;
if (verbose)
printf("filter: oct8 %.2f ms (%.2f GB/sec), oct12 %.2f ms (%.2f GB/sec), quat12 %.2f ms (%.2f GB/sec), exp %.2f ms (%.2f GB/sec)\n",
(t1 - t0) * 1000, double(d4.size()) / GB / (t1 - t0),
(t2 - t1) * 1000, double(d8.size()) / GB / (t2 - t1),
(t3 - t2) * 1000, double(d8.size()) / GB / (t3 - t2),
(t4 - t3) * 1000, double(d8.size()) / GB / (t4 - t3));
besto8 = std::max(besto8, double(d4.size()) / GB / (t1 - t0));
besto12 = std::max(besto12, double(d8.size()) / GB / (t2 - t1));
bestq12 = std::max(bestq12, double(d8.size()) / GB / (t3 - t2));
bestexp = std::max(bestexp, double(d8.size()) / GB / (t4 - t3));
}
}
struct File
{
std::vector<unsigned char> v0;
std::vector<unsigned char> v1;
size_t stride;
size_t count;
};
File readFile(const char* path)
{
FILE* file = fopen(path, "rb");
assert(file);
const char* name = strrchr(path, '/');
name = name ? name + 1 : path;
int vcnt, vsz;
int sr = sscanf(name, "v%d_s%d_", &vcnt, &vsz);
assert(sr == 2);
(void)sr;
std::vector<unsigned char> input;
unsigned char buffer[4096];
size_t bytes_read;
while ((bytes_read = fread(buffer, 1, sizeof(buffer), file)) > 0)
input.insert(input.end(), buffer, buffer + bytes_read);
fclose(file);
File result = {};
result.count = vcnt;
result.stride = vsz;
std::vector<unsigned char> decoded(result.count * result.stride);
int res = meshopt_decodeVertexBuffer(&decoded[0], result.count, result.stride, &input[0], input.size());
if (res != 0 && input.size() == decoded.size())
{
// some files are not encoded
memcpy(decoded.data(), input.data(), decoded.size());
}
meshopt_encodeVertexVersion(0);
result.v0.resize(meshopt_encodeVertexBufferBound(result.count, result.stride));
result.v0.resize(meshopt_encodeVertexBuffer(result.v0.data(), result.v0.size(), decoded.data(), result.count, result.stride));
meshopt_encodeVertexVersion(0xe);
result.v1.resize(meshopt_encodeVertexBufferBound(result.count, result.stride));
result.v1.resize(meshopt_encodeVertexBuffer(result.v1.data(), result.v1.size(), decoded.data(), result.count, result.stride));
return result;
}
int main(int argc, char** argv)
{
meshopt_encodeIndexVersion(1);
bool verbose = false;
bool loop = false;
bool inputs = false;
for (int i = 1; i < argc; ++i)
{
if (strcmp(argv[i], "-v") == 0)
verbose = true;
if (strcmp(argv[i], "-l") == 0)
loop = true;
if (argv[i][0] != '-')
inputs = true;
}
if (inputs)
{
std::vector<File> files;
for (int i = 1; i < argc; ++i)
if (argv[i][0] != '-')
files.push_back(readFile(argv[i]));
size_t max_size = 0;
size_t total_size = 0;
size_t total_v0 = 0, total_v1 = 0;
for (size_t i = 0; i < files.size(); ++i)
{
max_size = std::max(max_size, files[i].count * files[i].stride);
total_size += files[i].count * files[i].stride;
total_v0 += files[i].v0.size();
total_v1 += files[i].v1.size();
}
std::vector<unsigned char> buffer(max_size);
printf("Algorithm :\tvtx\tvtxe\n");
printf("Size (MB) :\t%.2f\t%.2f\n", double(total_v0) / 1024 / 1024, double(total_v1) / 1024 / 1024);
printf("Ratio :\t%.2f\t%.2f\n", double(total_v0) / double(total_size), double(total_v1) / double(total_size));
for (int l = 0; l < (loop ? 100 : 1); ++l)
{
double bestvd0 = 0, bestvd1 = 0;
for (int attempt = 0; attempt < 50; ++attempt)
{
double t0 = timestamp();
for (size_t i = 0; i < files.size(); ++i)
{
int rv = meshopt_decodeVertexBuffer(&buffer[0], files[i].count, files[i].stride, &files[i].v0[0], files[i].v0.size());
assert(rv == 0);
(void)rv;
}
double t1 = timestamp();
for (size_t i = 0; i < files.size(); ++i)
{
int rv = meshopt_decodeVertexBuffer(&buffer[0], files[i].count, files[i].stride, &files[i].v1[0], files[i].v1.size());
assert(rv == 0);
(void)rv;
}
double t2 = timestamp();
double GB = 1024 * 1024 * 1024;
bestvd0 = std::max(bestvd0, double(total_size) / GB / (t1 - t0));
bestvd1 = std::max(bestvd1, double(total_size) / GB / (t2 - t1));
}
printf("Score (GB/s):\t%.2f\t%.2f\n", bestvd0, bestvd1);
}
return 0;
}
const int N = 1000;
std::vector<Vertex> vertices;
vertices.reserve((N + 1) * (N + 1));
for (int x = 0; x <= N; ++x)
{
for (int y = 0; y <= N; ++y)
{
Vertex v;
for (int k = 0; k < 16; ++k)
{
uint32_t h = murmur3((x * (N + 1) + y) * 16 + k);
// use random k-bit sequence for each word to test all encoding types
// note: this doesn't stress the sentinel logic too much but it's all branchless so it's probably fine?
v.data[k] = h & ((1 << (k + 1)) - 1);
}
vertices.push_back(v);
}
}
std::vector<unsigned int> indices;
indices.reserve(N * N * 6);
for (int x = 0; x < N; ++x)
{
for (int y = 0; y < N; ++y)
{
indices.push_back((x + 0) * N + (y + 0));
indices.push_back((x + 1) * N + (y + 0));
indices.push_back((x + 0) * N + (y + 1));
indices.push_back((x + 0) * N + (y + 1));
indices.push_back((x + 1) * N + (y + 0));
indices.push_back((x + 1) * N + (y + 1));
}
}
printf("Algorithm :\tvtx\tvtxe\tidx\toct8\toct12\tquat12\texp\n");
for (int l = 0; l < (loop ? 100 : 1); ++l)
{
meshopt_encodeVertexVersion(0);
double bestvd0 = 0, bestid = 0;
benchCodecs(vertices, indices, bestvd0, bestid, verbose);
meshopt_encodeVertexVersion(0xe);
double bestvd1 = 0, bestidr = 0;
benchCodecs(vertices, indices, bestvd1, bestidr, verbose);
double besto8 = 0, besto12 = 0, bestq12 = 0, bestexp = 0;
benchFilters(8 * N * N, besto8, besto12, bestq12, bestexp, verbose);
printf("Score (GB/s):\t%.2f\t%.2f\t%.2f\t%.2f\t%.2f\t%.2f\t%.2f\n",
bestvd0, bestvd1, bestid, besto8, besto12, bestq12, bestexp);
}
}