Graphics processing systems

A method of providing tasks for generating a render output to a graphics processing pipeline, the method comprising:

• determining from graphics processing commands received from an application that requires graphics processing to generate a render output, whether to include a conditional graphics processing task in the graphics processing tasks that are to be executed by a graphics processing pipeline to generate the render output required by the application;
• and
• when it is determined to include a conditional graphics processing task in the graphics processing tasks that are to be executed by a graphics processing pipeline to generate the render output required by the application, instructing a graphics processing pipeline to execute a set of one or more graphics processing tasks to cause the graphics processing pipeline to generate the render output required by the application, with at least one of the tasks in the set of tasks having associated with it a condition to be used by the graphics processing pipeline to determine whether to execute processing for the task or not and a region of the render output over which the processing for the task will be executed when the condition for the task is met.

An apparatus for providing tasks for generating a render output to a graphics processing pipeline, the apparatus comprising processing circuitry capable of:

• determining from graphics processing commands received from an application that requires graphics processing to generate a render output, whether to include a conditional graphics processing task in the graphics processing tasks that are to be executed by a graphics processing pipeline to generate the render output required by the application;
• and of:
• when it is determined to include a conditional graphics processing task in the graphics processing tasks that are to be executed by a graphics processing pipeline to generate the render output required by the application, instructing a graphics processing pipeline to execute a set of one or more graphics processing tasks to cause the graphics processing pipeline to generate the render output required by the application, with at least one of the tasks in the set of tasks having associated with it a condition to be used by the graphics processing pipeline to determine whether to execute processing for the task or not and a region of the render output over which the processing for the task will be executed when the condition for the task is met.

A computer readable storage medium storing computer software code which when executing on a data processor performs a method of providing tasks for generating a render output to a graphics processing pipeline, the method comprising:

• determining from graphics processing commands received from an application that requires graphics processing to generate a render output, whether to include a conditional graphics processing task in the graphics processing tasks that are to be executed by a graphics processing pipeline to generate the render output required by the application;
• and
• when it is determined to include a conditional graphics processing task in the graphics processing tasks that are to be executed by a graphics processing pipeline to generate the render output required by the application, instructing a graphics processing pipeline to execute a set of one or more graphics processing tasks to cause the graphics processing pipeline to generate the render output required by the application, with at least one of the tasks in the set of tasks having associated with it a condition to be used by the graphics processing pipeline to determine whether to execute processing for the task or not and a region of the render output over which the processing for the task will be executed when the condition for the task is met.