My one light seems to ‘jump’ and not flow smoothly across my floor tile texture.
It’s much better explained in this short youtube video youtube link
Note that my light is not going somewhere and coming back; it is always located half way between the camera and the cube.
This is my function for drawing the floor tiles:
void drawFloor(){
float size = 20.0;
float startX = -60.0f;
float startZ = 60.0f;
glDisable(GL_COLOR_MATERIAL);
glPushMatrix();
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, _textureId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
//glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
for(int x = 0;x < 6; x++){
for(int z = 0;z < 6; z++){
glBegin(GL_QUADS);
glNormal3f(0.0f, 1.0f, 0.0f);
glTexCoord2f(0.0f, 0.0f);
glVertex3f(startX + size*x, 0.0f, startZ + -size*z);//bottom-left
glTexCoord2f(1.0f, 0.0f);
glVertex3f(startX + size + size*x, 0.0f, startZ + -size*z);//bottom-right
glTexCoord2f(1.0f, 1.0f);
glVertex3f(startX + size + size*x, 0.0f, startZ + -size + -size*z);//top-right
glTexCoord2f(0.0f, 1.0f);
glVertex3f(startX + size*x, 0.0f, startZ + -size + -size*z);//top-left
glEnd();
}
}
glDisable(GL_TEXTURE_2D);
glPopMatrix();
glEnable(GL_COLOR_MATERIAL);
}
Question: How can i make my light not jump and light the tiles smoothly?