Skip to content

Commit

Permalink
tools: Improve codecbench output
Browse files Browse the repository at this point in the history 
By default we no longer print detailed timing information, unless -v is
specified.

Also fix vertex filling to actually use 16-bit data.
  • Loading branch information
@zeux
zeux committed Dec 1, 2020
1 parent 0b963fd commit 4f15b82
Showing 1 changed file with 35 additions and 23 deletions.
58 changes: 35 additions & 23 deletions tools/codecbench.cpp
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2,9 +2,10 @@

#include <vector>

#include <time.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <time.h>

#ifdef __EMSCRIPTEN__
#include <emscripten.h>
Expand Down Expand Up @@ -53,17 +54,18 @@ uint32_t murmur3(uint32_t h)
return h;
}

void benchCodecs(const std::vector<Vertex>& vertices, const std::vector<unsigned int>& indices, double& bestvd, double& bestid)
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()));

printf("source: vertex data %d bytes, index data %d bytes\n", int(vertices.size() * sizeof(Vertex)), int(indices.size() * 4));
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 < 2; ++pass)
for (int pass = 0; pass < (verbose ? 2 : 1); ++pass)
{
if (pass == 1)
meshopt_optimizeVertexCacheStrip(&ib[0], &indices[0], indices.size(), vertices.size());
Expand All @@ -78,7 +80,8 @@ void benchCodecs(const std::vector<Vertex>& vertices, const std::vector<unsigned
ic.resize(ic.capacity());
ic.resize(meshopt_encodeIndexBuffer(&ic[0], ic.size(), &ib[0], indices.size()));

printf("pass %d: vertex data %d bytes, index data %d bytes\n", pass, int(vc.size()), int(ic.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 < 10; ++attempt)
{
Expand All @@ -98,9 +101,10 @@ void benchCodecs(const std::vector<Vertex>& vertices, const std::vector<unsigned

double GB = 1024 * 1024 * 1024;

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 (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)
{
Expand All @@ -111,14 +115,15 @@ void benchCodecs(const std::vector<Vertex>& vertices, const std::vector<unsigned
}
}

void benchFilters(size_t count, double& besto8, double& besto12, double& bestq12, double& bestexp)
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);

printf("filters: oct8 data %d bytes, oct12/quat12 data %d bytes\n", int(d4.size()), int(d8.size()));
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 < 10; ++attempt)
{
Expand All @@ -142,23 +147,30 @@ void benchFilters(size_t count, double& besto8, double& besto12, double& bestq12

double GB = 1024 * 1024 * 1024;

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));
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));
bestq12 = std::max(bestq12, double(d8.size()) / GB / (t3 - t2));
bestexp = std::max(bestexp, double(d8.size()) / GB / (t4 - t3));
}
}

int main()
int main(int argc, char** argv)
{
meshopt_encodeIndexVersion(1);

bool verbose = false;

for (int i = 1; i < argc; ++i)
if (strcmp(argv[i], "-v") == 0)
verbose = true;

const int N = 1000;

std::vector<Vertex> vertices;
Expand All @@ -176,7 +188,7 @@ int main()

// 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);
v.data[k] = h & ((1 << (k + 1)) - 1);
}

vertices.push_back(v);
Expand All @@ -201,12 +213,12 @@ int main()
}

double bestvd = 0, bestid = 0;
benchCodecs(vertices, indices, bestvd, bestid);
benchCodecs(vertices, indices, bestvd, bestid, verbose);

double besto8 = 0, besto12 = 0, bestq12 = 0, bestexp = 0;
benchFilters(8 * N * N, besto8, besto12, bestq12, bestexp);
benchFilters(8 * N * N, besto8, besto12, bestq12, bestexp, verbose);

printf("Algorithm : vtxdec\tidxdec\toct8\toct12\tquat12\texp\n");
printf("Score (GB/s): %.2f\t%.2f\t%.2f\t%.2f\t%.2f\t%.2f\n",
bestvd, bestid, besto8, besto12, bestq12, bestexp);
printf("Algorithm :\tvtx\tidx\toct8\toct12\tquat12\texp\n");
printf("Score (GB/s):\t%.2f\t%.2f\t%.2f\t%.2f\t%.2f\t%.2f\n",
bestvd, bestid, besto8, besto12, bestq12, bestexp);
}

0 comments on commit 4f15b82

Please sign in to comment.