首页> 外国专利> APPARATUS AND METHOD FOR IMAGE SPACE BASED SHADOWING WITH ADAPTIVE TRAVERSAL SCHEME

APPARATUS AND METHOD FOR IMAGE SPACE BASED SHADOWING WITH ADAPTIVE TRAVERSAL SCHEME

机译:具有自适应遍历方案的基于图像空间的阴影的装置和方法

摘要

A shadow processing apparatus based on an image space using an adaptive traversal technique and a method thereof are provided to solve the long processing time, much calculation amount and the performance deterioration of the whole system caused by the use of a big memory, when processing the shadow. A ZWSU(z-buffer walking shadowing unit) determines a direction for searching a pixel on a Z- buffer(401), and then calculates the location of the pixel to be checked for the existence of a shadow(403). The ZWSU calculates the depth value of the corresponding pixel in a viewpoint of the light(405), and then determines whether the shadow exists by comparing the calculated depth value with the previous maximum depth value(407). The ZWSU calculates the color value of the final pixel, to which shadow information is added, for the color value of a pixel from a frame buffer(409), and then provides the calculated color to the frame buffer.
机译:提供一种使用自适应遍历技术的基于图像空间的阴影处理设备及其方法,以解决处理时间长,计算量大以及由于使用大存储器而导致的整个系统的性能下降的问题。阴影。 ZWSU(z缓冲器行走阴影单元)确定用于在Z缓冲器上搜索像素的方向(401),然后计算要检查是否存在阴影的像素的位置(403)。 ZWSU在光的视点中计算对应像素的深度值(405),然后通过将所计算的深度值与先前的最大深度值进行比较来确定阴影是否存在(407)。 ZWSU针对来自帧缓冲器的像素的颜色值计算添加有阴影信息的最终像素的颜色值(409),然后将计算出的颜色提供给帧缓冲器。

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