C++博客-vibilin-随笔分类-Graphic Techniqueshttp://www.cppblog.com/vibilin/category/12029.htmlzh-cnTue, 15 Dec 2009 23:13:41 GMTTue, 15 Dec 2009 23:13:41 GMT60实现Subsurface Scattering效果(Subsurface Scattering shader by InvalidPointer : Half-Lambert + Fresnel Term)http://www.cppblog.com/vibilin/archive/2009/12/11/102977.htmlvibilinvibilinFri, 11 Dec 2009 06:56:00 GMThttp://www.cppblog.com/vibilin/archive/2009/12/11/102977.htmlhttp://www.cppblog.com/vibilin/comments/102977.htmlhttp://www.cppblog.com/vibilin/archive/2009/12/11/102977.html#Feedback0http://www.cppblog.com/vibilin/comments/commentRss/102977.htmlhttp://www.cppblog.com/vibilin/services/trackbacks/102977.html  经过几天的努力, 找了很多资料, 也看了很多论文, 终于实现了SSS效果. 本来想采用Translucent Shadow Maps, 最后还是使用了另外的方法实现.

  截图: (按F1 激活/禁用 diffuse color)

  1.) 没有使用diffuse color的效果:

  

  2.) 使用diffuse color后的效果:
  
   
  
   注: 如果应用在人物皮肤上, 效果会更好看些 ^_^!

   程序代码: /Files/vibilin/SubsurfaceScattering.rar

vibilin 2009-12-11 14:56 发表评论
]]>实现HDR效果 (HDR Rendering using with ToneMap)http://www.cppblog.com/vibilin/archive/2009/12/02/102390.htmlvibilinvibilinWed, 02 Dec 2009 07:30:00 GMThttp://www.cppblog.com/vibilin/archive/2009/12/02/102390.htmlhttp://www.cppblog.com/vibilin/comments/102390.htmlhttp://www.cppblog.com/vibilin/archive/2009/12/02/102390.html#Feedback0http://www.cppblog.com/vibilin/comments/commentRss/102390.htmlhttp://www.cppblog.com/vibilin/services/trackbacks/102390.html根据如下公式, 实现了一个HDR(High Dynamic Range)效果.

Tone Map = (HDR Scene) + (Blur Scene) ; 

Blur Scene = ( (HDR Scene) => (1/4 Size Frame) => (Vertical Gaussian Filter) => (Horizontal Gaussian Filter) );

截图:
Exposure Level(曝光度) = 0.1



Exposure Level(曝光度) = 5



程序代码: /Files/vibilin/HDRRendering.rar



vibilin 2009-12-02 15:30 发表评论
]]>实现阴影 Percentage Closer Filtering & Gaussian Blur Base on Shadow Maphttp://www.cppblog.com/vibilin/archive/2009/11/27/102122.htmlvibilinvibilinFri, 27 Nov 2009 14:32:00 GMThttp://www.cppblog.com/vibilin/archive/2009/11/27/102122.htmlhttp://www.cppblog.com/vibilin/comments/102122.htmlhttp://www.cppblog.com/vibilin/archive/2009/11/27/102122.html#Feedback0http://www.cppblog.com/vibilin/comments/commentRss/102122.htmlhttp://www.cppblog.com/vibilin/services/trackbacks/102122.html分别采用 (PCF)Percentage Closer Filtering 和 Gaussian Blur 方式实现了阴影效果. (开始由于坐标问题, 困惑了很久, 不过最后还是出效果了)

注: 按 S 键切换阴影类型, W键显示/关闭线框模式.

PCF效果:


Gaussian Blur效果:



程序代码: /Files/vibilin/SoftShadowMap.rar


vibilin 2009-11-27 22:32 发表评论
]]>Simple Viewing Frustum Culling(Frustum裁剪)http://www.cppblog.com/vibilin/archive/2009/11/24/101846.htmlvibilinvibilinTue, 24 Nov 2009 12:10:00 GMThttp://www.cppblog.com/vibilin/archive/2009/11/24/101846.htmlhttp://www.cppblog.com/vibilin/comments/101846.htmlhttp://www.cppblog.com/vibilin/archive/2009/11/24/101846.html#Feedback0http://www.cppblog.com/vibilin/comments/commentRss/101846.htmlhttp://www.cppblog.com/vibilin/services/trackbacks/101846.html采用了World-View-Projection Matrix 实现快速裁剪, 比较简单, 不过非常有效.

裁剪前, 一共有200个Sphere(包括可见的和不可见的):



裁剪后:



程序代码: /Files/vibilin/FrustumCuller.rar



vibilin 2009-11-24 20:10 发表评论
]]>Fix Pipeline Simulate (固定管道模拟)http://www.cppblog.com/vibilin/archive/2009/11/17/101211.htmlvibilinvibilinTue, 17 Nov 2009 09:23:00 GMThttp://www.cppblog.com/vibilin/archive/2009/11/17/101211.htmlhttp://www.cppblog.com/vibilin/comments/101211.htmlhttp://www.cppblog.com/vibilin/archive/2009/11/17/101211.html#Feedback0http://www.cppblog.com/vibilin/comments/commentRss/101211.htmlhttp://www.cppblog.com/vibilin/services/trackbacks/101211.html流失的时光  的代码分享以及ChunkHao 的经验交流.  写这个模拟程序目的也是为了总结一些以前学过的很基础的知识,  欢迎大家互相学习交流.



程序代码: /Files/vibilin/SoftRender.rar

vibilin 2009-11-17 17:23 发表评论
]]>实现Skeletal Animationhttp://www.cppblog.com/vibilin/archive/2009/11/15/101003.htmlvibilinvibilinSun, 15 Nov 2009 11:16:00 GMThttp://www.cppblog.com/vibilin/archive/2009/11/15/101003.htmlhttp://www.cppblog.com/vibilin/comments/101003.htmlhttp://www.cppblog.com/vibilin/archive/2009/11/15/101003.html#Feedback0http://www.cppblog.com/vibilin/comments/commentRss/101003.htmlhttp://www.cppblog.com/vibilin/services/trackbacks/101003.html根据Skinned Mesh的基本原理, 实现骨骼动画. 程序中并没有使用D3DXLoadSkinMeshFromXof, ID3DXSkinInfo::UpdateSkinnedMesh等辅助函数,  完全是手动编码读取和处理蒙皮信息.并将蒙皮信息应用到骨骼和Mesh上.

程序截图:



程序代码: /Files/vibilin/SkeletalAnimation.rar

相关文章参考: Skinned Mesh原理解析和一个最简单的实现示例
                         Advanced Animation With DirectX.pdf

vibilin 2009-11-15 19:16 发表评论
]]>实现 Spherical Harmonic Lightinghttp://www.cppblog.com/vibilin/archive/2009/10/26/99494.htmlvibilinvibilinMon, 26 Oct 2009 07:53:00 GMThttp://www.cppblog.com/vibilin/archive/2009/10/26/99494.htmlhttp://www.cppblog.com/vibilin/comments/99494.htmlhttp://www.cppblog.com/vibilin/archive/2009/10/26/99494.html#Feedback0http://www.cppblog.com/vibilin/comments/commentRss/99494.htmlhttp://www.cppblog.com/vibilin/services/trackbacks/99494.htmlhttp://www.research.scea.com/gdc2003/spherical-harmonic-lighting.html  文档,  实现了使用SH渲染由D3DXCreateBox和D3DXCreateTorus建造的模型的阴影效果.




(注) 在代码中文件 "sphere.mesh"和 "torus.mesh"  存储的数据是分别由 D3DXCreateSphere(m_pd3dDevice, 1.0f, 32, 16, pObject->m_pMesh, NULL),D3DXCreateTorus(m_pd3dDevice,1.0f, 16, 32, pObject->m_pMesh, NULL) 函数生成后导出的.

程序代码和采样数据: /Files/vibilin/SHProject.rar


vibilin 2009-10-26 15:53 发表评论
]]>ID3DXMesh的数据导出和导入http://www.cppblog.com/vibilin/archive/2009/10/23/99314.htmlvibilinvibilinFri, 23 Oct 2009 09:13:00 GMThttp://www.cppblog.com/vibilin/archive/2009/10/23/99314.htmlhttp://www.cppblog.com/vibilin/comments/99314.htmlhttp://www.cppblog.com/vibilin/archive/2009/10/23/99314.html#Feedback0http://www.cppblog.com/vibilin/comments/commentRss/99314.htmlhttp://www.cppblog.com/vibilin/services/trackbacks/99314.html   将由D3DXCREATE* 函数创建的模型数据导出到文件后, 再导入文件的数据重构模型.

   以下分别是程序截图和代码片断:


    

   

     最后附上可执行程序和CMeshIO的实现代码: /Files/vibilin/MeshIO.rar
    

vibilin 2009-10-23 17:13 发表评论
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