z缓冲区是否存储对象的z值? [英] does the z buffer stores the z value of an object?

问题描述

我做了2个球体.第二个球体是通过平移第一个球体，在x轴上平移3个单位和在-z aixs上平移2个单位而制成的.这是代码

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);

如果启用深度缓冲区

if depth buffer enable

glDepthMask(GL_TRUE);
glDepthFunc(GL_LEQUAL);

绘制第一个球后，深度缓冲区具有第一个球的z轴值.在绘制第二个球体glDepthFunc(GL_LEQUAL)时；检查存储的深度缓冲区值是否等于第二球体的值，如果小于第二球体绘制的像素，否则不进行绘制.

这就是我所了解的有关深度缓冲区工作的全部信息.这是正确的吗?如果m错误，请plz正确

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

推荐答案

Z缓冲区为*已渲染的每个像素*(而不是每个对象)保存一个值

除此之外，你是正确的

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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