OpenGl - How to repeat a texture? - c++

Question

Here is what I have so far :
Rectangle::Rectangle(int x, int y)
{
sizeX_ = x * CASE;
sizeY_ = y * CASE;
texture_ = gdl::Image::load("./ressources/floor.jpg");
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
}
void Rectangle::draw()
{
texture_.bind();
glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f);
glVertex3f(0.0f, 0.0f, 0.0f);
glTexCoord2f(sizeX_ / CASE, 0.0f);
glVertex3f(sizeX_, 0.0f, 0.0f);
glTexCoord2f(0.0f, sizeY_ / CASE);
glVertex3f(sizeX_, 0.0f, sizeY_);
glTexCoord2f(sizeX_ / CASE, sizeY_ / CASE);
glVertex3f(0.0f, 0.0f, sizeY_);
glEnd();
}
The constructor takes the size of the map in cases. For example : (10, 10). and the real size will be (10 * CASE), where CASE = 400.
But this is not repeating correctly the texture. The texture seems to be reduced (good point) and packed from the up left point to the bottom right point.
Am I doing something wrong ?

Answer 1

glTexParameter works on the currently bound texture. It doesn't globally set parameters. This means that you need to bind a texture before calling this function:
glBindTexture(GL_TEXTURE_2D, ...);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);