Scalability and Granularity Issues of the Hierarchical Radiosity Method

نویسندگان

  • Axel Podehl
  • Thomas Rauber
  • Gudula Rünger
چکیده

The radiosity method is a global illumination method from computer graphics to visualize light in scenes of diiuse objects within an enclosure. The hierarchical radiosity method reduces the problem size considerably but results in a highly irregular algorithm which makes a parallel implementation more diicult. We investigate a task-oriented shared memory implementation and present optimizations with diier-ent eeects concerning locality and granularity properties. As execution platform we use the SB-PRAM, a shared-memory machine with uniform memory access time, which allows us to concentrate on load balancing and scalability issues.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Shared - Memory Implementation of theHierarchical

The radiosity method is a simulation method from computer graphics to visualize the global illumination in scenes containing diiuse objects within an enclosure. A variety of realizations (including parallel approaches) were proposed to achieve a high eeciency while guaranteeing the same accuracy of the graphical representation. The hierarchical radiosity method reduces the computational costs c...

متن کامل

HIRAD: A Hierarchical Higher Order Radiosity Implementation

In this paper we describe our hierarchical higher order radiosity implementation, called HIRAD. We present a number of improvements to the original wavelet radiosity method: We propose new basis functions for (convex) quadrilaterals and for triangles offering finer granularity than the usual product-1D bases, a new refinement criterion for hierarchical refinement and a very general strategy for...

متن کامل

Hierarchical level of detail optimization for constant frame rate rendering of radiosity scenes

The predictive hierarchical level of detail optimization algorithm of Mason and Blake is experimentally evaluated in the form of a practical application to hierarchical radiosity. In a novel approach the recursively subdivided patch hierarchy generated by a perceptually refined hierarchical radiosity algorithm is treated as a hierarchical level of detail scene description. In this way we use th...

متن کامل

Spatial Partitioning for Parallel Hierarchical Radiosity on Distributed Memory Architectures

This paper presents an efficient, highly scalable implementation of the Hierarchical Radiosity Algorithm. We present a clever mapping of Hierarchical Radiosity to high-dimensional spaces that manifests a locality property, which can greatly reduce communication on parallel distributed memory architectures. We use a very simple dynamic spatial partitioning method to keep the mapping balanced. We...

متن کامل

Automatic Calculation of Soft Shadow Textures for Fast, High-Quality Radiosity

We propose a new method for greatly accelerating the computation of complex, detailed shadows in a radiosity solution. Radiosity is computed using a “standard” hierarchical radiosity algorithm with clustering, but the rapid illumination variations over some large regions receiving complex shadows are computed on the fly using an efficient convolution operation, and displayed as textures. This a...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1996