Comments (2)
Hello,
In my side, with C++11 or C++17 the initialization to 0 is turn off. But it's horrible because it use random values on stack, and the compiler does not detect that glm variables are not initialized.
I would prefered to have a glm library that initialize zero values by default, and propose to user the non-intialization version with a macro definition.
See the following code for an example :
$ git clone https://github.com/g-truc/glm
$ cat main.cpp
#include <iostream>
#include "glm/glm.hpp"
#include <vector>
int main()
{
glm::dvec2 v;
std::vector< glm::dvec2 > vec;
for ( glm::dvec2 p : vec ) {
v += p;
}
std::cout << v.x << " " << v.y << "\n";
return 0;
}
$ g++ -o main main.cpp -Wall -Werror -g -Iglm/ -std=c++11
$ ./main
6.92165e-310 0
$ g++ -o main main.cpp -Wall -Werror -g -Iglm/ -std=c++17
$ ./main
6.92317e-310 0
from glm.
Hi,
Not initializing vector types is a behavior defined by GLSL spec which GLM follows. This is why GLM_FORCE_CTOR_INIT exist.
from glm.
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from glm.