| 摘要 |
<p>Multi-pass graphics processing system and method comprising: generating an array of graphics data in a first rendering pass 28; in the first rendering pass 28, determining, and generating information 31 indicative of, one or more regions 30 of the array that have a characteristic such as 3D models or geometric primitive shapes; using the information 31 to control reading of the array during a subsequent rendering pass 29. Information 31 may comprise bounding boxes, lists or bitmaps. Regions 30 may be areas that will be in shadow in the final image. Portions 30 of the array may not be read. A fixed pixel value may be stored and applied to pixel locations within regions 30. Portions 30 of the array lacking the attribute may not be generated. Regions 30 may be identified where data positions have the same pixel values. Identification of regions 30 may be used to control creation of the array in the first pass 28. The graphics processing pipeline may include polygon vertex shading 10 and texture mapping or shadow mapping to colour picture fragments 13.</p> |
