len3d

摘要： trace depth rays per second per core 6 220000 5 230000 4 250000 3 270000 2 310000why rays per second per core is dropping so fast with trace depth? 阅读全文

摘要： Chaos Group:http://www.indeed.com/cmp/Chaos-Group-LLCRevenue: $17.5 MillionEmployees: 51-200mental images:http://we.pcinlife.com/thread-887111-1-1.htmlRevenue (quarter, 2008): less than $1 MillionAcquisition: $70 Million, see http://www.123jump.com/earnings-calls/NVIDIA-Fourth-Quarter-Earnings-Call/ 阅读全文

摘要： 今天在AU没通过Autodesk 3ds Max初级认证，可耻的失败了。。。。 阅读全文

摘要： In ray tracing with BVH, one can typically use either distance-based sorting or axis-based sorting for determining the traversal order of child nodes.I tested both methods, it's observed that axis-based sorting is slightly faster than distance-based sorting, interesting. We only compare the numb 阅读全文

摘要： I always assume that 'static const' is faster than 'const', while it's actually not the case.From the assembly code generated by VS 2008, 'static const' will generate a dynamic branch to make sure the variable is only initialized once. However, 'const' will genera 阅读全文

摘要： I did some tests with the C compiler of Visual Studio 2008, the two methods of dot below made no difference in the generated assembly code:typedefstructVec{floatx,y,z;}Vec;#defineDOT(a,b)(a.x*b.x+a.y*b.y+a.z*b.z)__forceinlinefloatdot(constVec*a,constVec*b){return(a->x*b->x+a->y*b->y+a-&g 阅读全文

摘要： http://software.intel.com/en-us/articles/maximum-fps-three-tips-for-faster-codehttp://www.codeproject.com/Articles/6154/Writing-Efficient-C-and-C-Code-Optimizationhttp://leto.net/docs/C-optimization.php 阅读全文

摘要： 现在的博客客户端没有一个用着顺手的，为什么？因为插入图片太难了。我首先要确认我的博客是否支持上传图片，然后，我要找到这个上传图片的按钮，并且经历一堆界面找到我硬盘上的图片文件（找图片文件本身就很麻烦，尤其是图片文件名很相近的时候，比如一堆刚从相机导出的照片），最后我要确认我的链接被插在文字中适当的位置，并且假如我要文字环绕图片或者其它高级一点的排版效果实在是太麻烦。这里提出一个新概念的博客图文混编工具，有以下特点来解决上述问题：1. 图片均用截屏方式插入，所见即所得，你可以使用本地最喜欢的图片浏览器（你通常也是这么浏览图片的），然后使用截图功能来截取屏幕上的任意区块插入博文。截图自动被缓存，. 阅读全文

摘要： Kollig and Keller, Efficient Multidimensional Samplingwww.uni-kl.de/AG-Heinrich/EMS.pdfMonte Carlo Light Tracing With Direct Computation Of Pixel Intensitieshttp://graphics.cs.kuleuven.be/publications/MCLTWDCOPI/Strictly Deterministic Sampling Methods in Computer Graphicshttp://citeseerx.ist.psu.edu 阅读全文

摘要： Possible ways for distributed rendering:Condor - free open-source distribution systemGoogle Protocol BuffersBitTorrent (P2P) 阅读全文