cube-game-plus-plus/client/rendering/NoiseTexture.cpp

#include <vector>
#include <cstdlib>

#include "client/rendering/NoiseTexture.h"

NoiseTexture::NoiseTexture(uint width, uint height) {
    std::vector<float> data;
    for(uint x = 0; x < width; x++) {
        for(uint y = 0; y < height; y++) {
            data.push_back(getRandom());
            data.push_back(getRandom());
            data.push_back(getRandom());
        }
    }
    texture.setRGBFloatData(width, height, data.data());
}

void NoiseTexture::bind(uint index) const {
    texture.bind(index);
}

float NoiseTexture::getRandom() const {
    float r = static_cast<float> (rand()) / static_cast<float> (RAND_MAX);
    return r * 2.0f - 1.0f;
}