11 2009 档案

在renderman中使用raytrace 计算fur的项目
摘要：http://features.cgsociety.org/story_custom.php?story_id=5351只有一只羊不知道有多少fur一帧需要三个小时的时间。。也就是电影级可以接受 阅读全文
posted @ 2009-11-22 12:39 rdRaod 阅读(272) 评论(0) 推荐(0)
shave Hair fake occ
摘要：the hair fake occ code from http://mattrm.blogs.3dvf.com/Hello,It’s really easier, it’s really a big fake. I just used the “v direction” that drive the mix of root and tips col... 阅读全文
posted @ 2009-11-20 11:33 rdRaod 阅读(475) 评论(0) 推荐(0)
pyqt signal slot
摘要：Now let’s look at the general syntax for connections. We assume that the PyQtmodules have been imported using the from …import * syntax, and that s andw are QObjects, normally widgets, wit... 阅读全文
posted @ 2009-11-18 00:17 rdRaod 阅读(585) 评论(0) 推荐(0)
dicing camera
摘要：7.11 Dicing CamerasAs we already know, 3Delight renders geometry by tessellating it into micro-polygons. This way of doing things makes running displacement shaders straightforward and efficient. One ... 阅读全文
posted @ 2009-11-07 23:48 rdRaod 阅读(306) 评论(0) 推荐(0)
生成Ptc文件时候使用top camera比较好
摘要：从http://www.3delight.com/en/modules/PunBB/viewtopic.php?id=1738得到的启发3) set the top camera to render with double size of my finall render size但是需要把是final render size的两倍么 ????????还找不到原因 阅读全文
posted @ 2009-11-06 20:10 rdRaod 阅读(241) 评论(0) 推荐(0)
3delight 上关于ptex的讨论，3delight的开发者最后说ptex的内存表现并不比普通的贴图差，不知道是不是因为3delight不支持而故意说的
摘要：http://www.3delight.com/en/modules/PunBB/viewtopic.php?id=1742tijude wrote:Ptex are really efficient in memory footprint with big texture map and nice to implement in a pipeline. SO I agree with simon... 阅读全文
posted @ 2009-11-06 20:02 rdRaod 阅读(384) 评论(0) 推荐(0)
ptc ao image pipline
摘要：Point Cloud CreationConverting a scene into a point cloud representation is a straightforward task but care must be taken to ensure the correctness and the optimality of the operation. One should star... 阅读全文
posted @ 2009-11-02 22:56 rdRaod 阅读(547) 评论(0) 推荐(0)
ptc 与 raytrace比较
摘要：Main benefits are summarized below:Due to the nature of the point-based approach, the resulting ambient occlusion effect is smooth.Displacements, a costly operation in the ray-tracing case, come at no... 阅读全文
posted @ 2009-11-01 22:46 rdRaod 阅读(409) 评论(1) 推荐(0)
Point-Based Occlusion and Color Bleeding 与 Occlusion Baking 的区别
摘要：The "baking" in the point-based method is nothing more than a simple conversion of scene's geometry into a point cloud file最大的区别就是ptc 方法仅仅是讲场景几何体转换为ptc文件所以非常快，不需要任何bake来自3delight 文档7.7 Point-Based Occ... 阅读全文
posted @ 2009-11-01 22:37 rdRaod 阅读(382) 评论(0) 推荐(0)