Graphics processing

Abstract

Method of operating a graphics processor, comprising: tracking completion of first rendering tasks of a first rendering job issued to the graphics processor; issuing second rendering tasks for a second, later rendering job concurrently with processing of the first rendering tasks; controlling processing of the second rendering tasks based on completion of the first rendering tasks to enforce dependencies between the first and second rendering jobs. Rendering jobs may be rendering passes in two pass or multiple pass rendering. A rendering task may be shading an individual tile in tile-based multi-pass rendering. First and second render tasks may be processed in parallel by GPU shader cores but second tasks may be stalled until corresponding first tasks have completed. Monitoring completion of first tasks may use an updatable data structure. Shader core utilisation may be improved. May also be used in rasterization or ray tracing rendering systems.

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