实时动态云 perlin noise + 光照 + 太阳光遮挡

最新推荐文章于 2024-07-27 08:19:54 发布

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最新推荐文章于 2024-07-27 08:19:54 发布

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原文链接：http://www.cnblogs.com/oiramario/archive/2010/02/02/1662178.html

本文介绍了一种使用Perlin噪声、光照及太阳光遮挡技术在GPU上实现的实时动态云渲染方法。该方法仅使用29个像素着色器指令和一张噪声纹理，通过调整参数实现了云朵形状的变化及与天空的互动效果。

. The sun is very bright and it is making you squint !
2. The clouds near the sun are glowing much brighter than clouds far from the sun.
3. Luckly the clouds are moving across the sky, and occasionally block out the sun, making it easier to see, so you don't have to squint as much.
4. The clouds are also changing shape as they move across the sky.
5. Not all the sky contains cloud. Some areas of sky are completely cloud free.
6. The clouds do not continue into the distance forever. The furthest clouds are often obscured by haze.
7. All of this used 29 pixel shader instructions to implement.
8. All of this are real-time on GPU that used only 1 noise 3d lookup texture even the sun is procedural.

9. I coded the cloud in 2 days with rendermonkey and integration to ogre.

[hjp2=400,300,true]http://player.youku.com/player.php/sid/XMTQ5ODE4MTcy/v.swf[/hjp2]