THREE-DIMENSIONAL COMPUTER GRAPHICS SYSTEM

PURPOSE:To provide the three-dimensional computer graphics system which enables plotting by preparing the capacity of a VRAM just for pictures. CONSTITUTION:Three-dimensional model data are called from a recorder 1 and written in a memory 2. The coordinate is transformed at a coordinate transforming...

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Bibliographic Details
Main Author SENBON HIROYUKI
Format Patent
LanguageEnglish
Published 21.07.1995
Edition6
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
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Summary:PURPOSE:To provide the three-dimensional computer graphics system which enables plotting by preparing the capacity of a VRAM just for pictures. CONSTITUTION:Three-dimensional model data are called from a recorder 1 and written in a memory 2. The coordinate is transformed at a coordinate transforming part 3 by applying affine transformation and perspective transformation to a display coordinate system, and those data are written in the memory 2 again. The Y direction of the display coordinate system (the longitudinal direction of a picture) is sorted by a sorting part 4 and recorded in a memory 5. At a picture managing part 6, the address information of a VRAM 7 is provided from a display control part 8 just calling the VRAM 7 for present indication. A division inspecting part 9 investigates whether it is necessary to perform polygon division concerning the upper data of the sorted data, plotting processing is performed by a plotting processing part 10 and texture mapping is performed by calling texture data from a texture data memory 13 by a texture processing part 12 as needed. When it is not necessary to perform the division, the data are stored in the VRAM 7.
Bibliography:Application Number: JP19930327302