Improved Visibility-Test for a Software 3D Graphics Engine on Mobile Devices
Date Issued
2006
Date
2006
Author(s)
Yu, Chih-Wei
DOI
en-US
Abstract
The limited display resolution,small amount of memory, slow memory access rate and narrow bus bandwidth are critical issues that make the rendering performance and quality
undesirable. This thesis will mainly focus on improving the performance bottleneck of the traditional graphics pipeline. In addition, in each stage, we present some new algorithms to either speedup the rendering performance or the rendering quality. There are some key innovations included in this thesis : I) The cone-based visibility-test algorithm, which reduces a signi‾cant amount of read/write operations on Z-buffer, and diminishes the number of vertex transformation; II) The view-flipping Z-buffer scheme that avoids half of z-buffer clear operation; III) a lighting system with rendering quality closes to Phong Shading while
the computation cost is almost the same as Gauroud Shading. The performance comparisons on software simulator and real devices show that these innovations greatly improve the
rendering capabilities on the mobile devices.
Subjects
三維繪圖引擎
手持裝置
可視度偵測
3D graphics engine
mobile device
visibility-test
Type
thesis
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