Efficient rendering of clipping objects

A system comprising:

• a memory component;
• and
• a processing device coupled to the memory component, the processing device to perform operations comprising:
• generating a clipping tree that includes a root node and a node for each clipping group included in a layer of an input render tree;
• generating a segment buffer having rows that each represent coverage of a branch of the clipping tree and columns that each represent coverage of a level of the clipping tree;
• mapping the segment buffer to a two-dimensional array;
• and
• computing coverage for a clipping object of a clipping group included in the layer of the input render tree based on an identifier of a row of the two-dimensional array.

A non-transitory computer-readable storage medium storing executable instructions, which when executed by a processing device, cause the processing device to perform operations comprising:

• generating a clipping tree having nodes corresponding to clipping groups included in an input render tree;
• generating a segment buffer having rows that each represent coverage of a branch of the clipping tree and columns that each represent coverage of a level of the clipping tree;
• extracting a row from the segment buffer based on a row identifier of the row;
• and
• computing coverage for a clipping object of a clipping group included in the input render tree using a bit mask that masks out bits included in the row that do not contribute to the coverage for the clipping object.