求助：OpenGL透明问题

love_gis 2009-12-04 09:17:55

问题描述：是地形上加载了三维模型，模型有些部分居然是透明的，直接看到了地形，不绘制地形时模型显示正常！可我也没有相关的设置啊，苦想好久，请大家帮忙啊，先谢过了！
ps：我是在用c#写的，地形用顶点数组绘制，模型利用显示列表，不过我检查应用与他们无关的！

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love_gis 2009-12-05

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问题解决了，谢谢大家关心！
gluPerspective(90,(GLfloat)w/(GLfloat)h,0.0,5.0);
是要把黄色的部分改成1.0就可以了！不能距离眼睛太近了，原因还不清楚！

张赐 2009-12-04

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是不是地形把模型挡住了啊

张赐 2009-12-04

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……
没有开启深度测试当然不行

xingzhe2001 2009-12-04

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cull可以先disable掉

xingzhe2001 2009-12-04

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要启动阿，要不然没有深度测试可能导致后面的像素跑到前边来。

love_gis 2009-12-04

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[Quote=引用 3 楼 l_candry_163_com 的回复:]
你可以看一看是不是没有启动消隐，有可能是模型与地面有相交部分，然他们之间有一点距离
[/Quote]消隐不是默认的吗？我没有设置啊，能解释下吗？感谢

love_gis 2009-12-04

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[Quote=引用 2 楼 xingzhe2001 的回复:]
检查是否打开了 z测试， cull是否正确。
[/Quote]不太明白，你是说深度测试吗？我没有启动啊！

l_candry_163_com 2009-12-04

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你可以看一看是不是没有启动消隐，有可能是模型与地面有相交部分，然他们之间有一点距离

xingzhe2001 2009-12-04

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检查是否打开了 z测试， cull是否正确。

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