3dmax渲染技巧，3dmax的HDR贴图在VR中怎么使用？怎样渲染更加真实的场景？
推荐回答（3个）
1、先给空白材质球赋予vray材质，快捷键m。
2、之后点击漫反射旁边的小点，会打开贴图选项，在标准下面点击位图。
3、一般材质小球默认是球体，而我们导入的图片多半是长方形的，这个时候可以点击右边列表 个把球体显示改变成矩形显示。
4、之后就可以把这个材质贴图小球跟渲染一样放到你想放的地方了。
5、一般我们点击茶壶进行渲染就可以看到效果了。
6、如果想在操作的时候就看到效果就按下面工具栏的从右边数第四个按钮旁边有个灯泡一样的就可以看到预览效果。
注意事项：
3D Studio Max + Windows NT组合的出现一下子降低了CG制作的门槛，首先开始运用在电脑游戏中的动画制作，后更进一步开始参与影视片的特效制作。
3DSmax的HDR贴图运用有多种方式，有的是贴在环境贴图上面的，有的是通过添加Vray 穹顶灯光中的HDR来实现。
这里先看环境贴图：数字键8 打开环境
添加贴图方式——vray HIdR
把材质编辑器打开，把贴图以实例拖拽到材质框里
在材质球下的位图位置通过浏览找到你准备好的HIDR贴图
调整为球形
后面依据场景的亮度调节材质倍增以达到适合的强度。
然后是通过添加Vray面光源变穹顶光来调节：
把它变为穹顶
在下面添加HIDR贴图
后面的操作就和之前的一样了，如果已经有了调好的HIDR材质，可以直接拖拽到使用纹理这个贴图框里。
记住，这里的拖拽都是以实例。
HDR即高动态范围贴图，全称是High Dynamic Range，简单说，就是超越普通光照颜色和强度的光照。在HDR的帮助下，我们可以使用超出普通范围的颜色值，因而能渲染出更加真实的3D场景。HDR贴图的作用，主要用来实现场景照明和模拟反射折射，从而使物体表现的更加真实。
举了个例子：创建了一个简单的场景，两个玻璃杯子，一个金属茶壶，一个陶瓷碟子，以及一个金属勺子叉子。来看一下HDR贴图的使用方法http://www.loongrender.com/wiki/tutorial/383.html
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