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Apply a random seed when NOT in benchmark mode to have 100% deterministic runs in all samples (#1127)

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* Apply a random seed when NOT in benchmark mode to have 100% deterministic runs

These samples lack the check for benchmark.active when applying a random seed, which is done for other samples.

* Update texture3d.cpp
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takayhan-AMD 2024-05-18 10:01:01 +02:00 • committed by GitHub
parent 478b6c39bf
commit 3d4446fa15
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6 changed files with 26 additions and 27 deletions
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15
examples/texture3d/texture3d.cpp
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@ -38,13 +38,13 @@ private:
return ((h & 1) == 0 ? u : -u) + ((h & 2) == 0 ? v : -v);
}
public:
PerlinNoise()
PerlinNoise(bool applyRandomSeed)
{
// Generate random lookup for permutations containing all numbers from 0..255
std::vector<uint8_t> plookup;
plookup.resize(256);
std::iota(plookup.begin(), plookup.end(), 0);
std::default_random_engine rndEngine(std::random_device{}());
std::default_random_engine rndEngine(applyRandomSeed ? std::random_device{}() : 0);
std::shuffle(plookup.begin(), plookup.end(), rndEngine);
for (uint32_t i = 0; i < 256; i++)
@ -89,16 +89,15 @@ template <typename T>
class FractalNoise
{
private:
PerlinNoise<float> perlinNoise;
PerlinNoise<T> perlinNoise;
uint32_t octaves;
T frequency;
T amplitude;
T persistence;
public:
FractalNoise(const PerlinNoise<T> &perlinNoise)
FractalNoise(const PerlinNoise<T> &perlinNoiseIn) :
perlinNoise(perlinNoiseIn)
{
this->perlinNoise = perlinNoise;
octaves = 6;
persistence = (T)0.5;
}
@ -166,7 +165,7 @@ public:
camera.setPosition(glm::vec3(0.0f, 0.0f, -2.5f));
camera.setRotation(glm::vec3(0.0f, 15.0f, 0.0f));
camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 256.0f);
srand((unsigned int)time(NULL));
srand(benchmark.active ? 0 : (unsigned int)time(NULL));
}
~VulkanExample()
@ -287,7 +286,7 @@ public:
auto tStart = std::chrono::high_resolution_clock::now();
PerlinNoise<float> perlinNoise;
PerlinNoise<float> perlinNoise(!benchmark.active);
FractalNoise<float> fractalNoise(perlinNoise);
const float noiseScale = static_cast<float>(rand() % 10) + 4.0f;