昨日， 在 SIGGRAPH 2015 (Special Interest Group on GRAPHics and Interactive Techniques 是图形学及互交技术特殊爱好者集团的简称) 展会的一堂关于高级实时渲染的游戏课程中推荐到了《地平线：黎明时分（Horizon：Zero Dawn）》 所使用的技术。其间，Guerrilla工作室的首席特效师 Andrew Schneider 讲了一段 “The Real-time Volumetric Cloudscapes of Horizon: Zero Dawn”（实时体积云景？）

今天我们能看到 SIGGRAPH 展会站点放出的4张截图，展示了4种不同条件下的游戏天空景象。

之后，Bungie的图形架构师 Natalya Tatarchuk 展示了一些其亲自拍摄的照片，让我们进一步了解了游戏中美丽的云彩。

Real-time volumetric clouds in games usually pay for fast performance with a reduction in quality. The most successful approaches are limited to low altitude fluffy and translucent stratus-type clouds. For Horizon: Zero Dawn, Guerrilla need a solution that can fill a sky with evolving and realistic results that closely match highly detailed reference images which represent high altitude cirrus clouds and all of the major low level cloud types, including thick billowy cumulus clouds. These clouds need to light correctly according to the time of day and other cloud-specific lighting effects. Additionally, we are targeting GPU performance of 2ms. Our solution is a volumetric cloud shader which handles the aspects of modeling, animation and lighting logically without sacrificing quality or draw time. Special emphasis will be placed on our solutions for direct-ability of cloud shapes and formations as well as on our lighting model and optimizations.

Guerrilla工作室还分享了一个PDF文件 handy PDF ，详细介绍了女主角Aloy的各方面装饰细节。

我们看到了非常想尽的3D模型图，包括女主的弓箭，那么还是看图吧，里面还包括女主角更多的信息以及游戏文化背景。