| 摘要 |
It is applicable to CG processing for interactive purposes, and reduces memory access amount for loading the vertex data of the input polygon model. An image generating apparatus (100) which generates a computer graphics image by rendering a polygon, including a coordinate data loading unit (103) which loads coordinate data in vertex data of a vertex composing the polygon, a coordinate transformation unit (104) which transforms a coordinate of the loaded coordinate data into a coordinate in a different coordinate system, a polygon removal determining unit (105) which determines whether the polygon is to be rendered or not, using transformed coordinate data obtained through the transformation, a vertex removal determining unit (106) which determines the vertex to be valid, the vertex composing the polygon that is determined to be valid, a form data loading unit (107) which loads the form data corresponding to only the vertex that is determined to be valid, and a polygon rendering unit (108) which renders the polygon using the loaded form data and the transformed coordinate data.
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