基于延迟着色技术的大场景反走样渲染架构设计

发布时间：2018-02-04 04:46

本文关键词： 反走样覆盖采样反走样延迟着色类层次细节渲染架构　出处：《工程科学与技术》2017年04期 　论文类型：期刊论文

【摘要】：为解决飞行仿真领域其视景系统对逼真、复杂场景渲染质量要求高的问题,提出基于延迟着色技术的大场景反走样渲染架构以实现全球地景及场景特效的真实感渲染,达到飞行训练的效果。本渲染架构主要解决延迟着色技术与硬件反走样技术——覆盖采样反走样(CSAA)不兼容的问题,在延迟阶段生成带CSAA反走样的多渲染目标缓存(G-Buffer),在着色阶段通过记录在特定通道中的透明度蒙版信息进行几何体边缘恢复以进行最终的光照计算;对不同绘制组件开启不同等级的反走样等级以达到效果与效率的平衡,并利用类层次细节(LOD)模型构建技术及标记重要边界信息进行后处理等加强反走样效果。采用本渲染架构开发的视景系统,从实际训练及实验所得到的数据与效果表现上决定不同负载组件最终的采样倍数,这样系统的实时性高(60fps),能达到飞行模拟视景对渲染效率的要求,减少延迟与卡顿;同时该框架反走样效果好于亚像素还原反走样(SRAA)算法,从而视景系统能达到性能与画质的最佳组合。通过实际训练与飞行模拟专家鉴定,基于该框架系统的视景系统能达到飞行仿真训练的目的。
[Abstract]:In order to solve the problem that the visual system of flight simulation requires high quality of realistic and complex scene rendering. A large scene anti-aliasing rendering architecture based on delayed coloring technology is proposed to realize the global landscape and scene special effects realistic rendering. To achieve the effect of flight training. This rendering architecture mainly solves the problem of the incompatibility between the delayed coloring technology and the hardware anti-aliasing technology-overlay sampling anti-aliasing CSAA. A multi-rendering target cache with CSAA anti-aliasing is generated during the delay phase. In the coloring phase, the geometric edge is restored by the transparent mask information recorded in a specific channel to carry out the final illumination calculation. Open different levels of anti-aliasing levels for different drawing components to achieve a balance between effectiveness and efficiency. The anti-aliasing effect is enhanced by using class level detail (LOD) model construction technology and post-processing of marking important boundary information. The visual system developed by this rendering architecture is adopted. From the actual training and experimental data and the performance of the results determine the final sampling multiple of different load components, so that the system has a high real-time performance of 60 FPS). It can meet the requirement of rendering efficiency in flight simulation scene and reduce delay and Catton. At the same time, the anti-aliasing effect of the frame is better than that of sub-pixel reduction anti-aliasing algorithm, so the visual system can achieve the best combination of performance and picture quality, through actual training and flight simulation expert identification. The visual system based on the frame system can achieve the purpose of flight simulation training.
【作者单位】：四川大学计算机学院;四川大学视觉合成图形图像技术国家重点学科实验室;
【基金】：国家高技术研究发展计划资助项目(2015AA016405)
【分类号】：TP391.41;V211
【正文快照】： 飞行仿真训练中,对视景系统的实时、真实感渲染要求较高,因此对飞行视景仿真系统的研究和设计[1]至关重要。延迟着色技术[2]是目前渲染引擎设计的主流渲染方式,能满足虚拟场景实时渲染的要求[3]。相比传统的前向渲染(forward rendering)方式在多光源渲染时低效率的问题,延迟着

【参考文献】