MOUT的Shadow渲染流程

最新推荐文章于 2025-12-27 21:48:48 发布

原创最新推荐文章于 2025-12-27 21:48:48 发布 · 441 阅读

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#function #object #list #file

本文深入探讨了阴影渲染技术的关键步骤，包括使用NiNew为NiCamera分配内存、收集场景中的遮挡物几何信息、渲染遮挡物几何体并将其投影到近平面作为纹理，以及利用光照相机裁剪地面并捕捉视锥体与地面的交点。

1. NiNew NiCamera
   --> NiMemObject::operator new(NI_MEMHINT_NONE,__FILE__,__LINE__,__FUNCTION__)
     --> NiMemManager::Get().Allocate(..)
       --> Allocator::Allocate(..)

2. SetCaster:
-->ShadowGeometry::RecursiveStoreCasterObjects(NiAVObject* pkObject)
    -->Store All Geometries(NiMesh) of the given pkObject into a list
      -->Store the Terrain as Ground

3. Render Shadow:
-->Click():
   -->Update Camera Location + Let Camera enclose the watched object
    -->Render all Caster's Geometries with Light Camera: Projected into Near Plane
       then As Texture
       -->use light camera to cull ground
         -->capture all intersection points(View Frustum and Ground)
           -->build a triangle mesh using intersections
             -->find the intersection point of camera view dir onto ground as center
               -->measure the diff between an intersection point and this center
                  as texture coord in s and t