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i made 2 spheres. second sphere is made by translating the first, 3 units on x-axis and 2 units on -z aixs. this is the code
 
glutSolidSphere(1.0,8,15);
glColor3f(0.0,0,0);
glTranslatef(3,0,-2);
glutSolidSphere(1.0,8,15);
 

if depth buffer enable
glDepthMask(GL_TRUE);
glDepthFunc(GL_LEQUAL);
 
after first sphere is drawn, depth buffer has z-axis value of first sphere. while drawing second sphere glDepthFunc(GL_LEQUAL); checks stored depth buffer value to the second sphere's value, if it is less than it draws tht pixel other wise not.
 
this is all wht i understand about depth buffer working. is this right? plz correct if m wrong
Posted 23-Oct-11 22:08pm

1 solution

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Solution 1

The Z buffer holds a value for *every pixel* that has been rendered, not per object
 
Apart from that, you are correct
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Comments
Sweety Khan at 24-Oct-11 10:21am
   
thank u so much :)

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