Sub-partition intra prediction in video coding

A method of coding video data, the method comprising:

• determining an intra prediction mode associated with a neighboring block of a current block of video data;
• determining a split type of the current block of video data based on the intra prediction mode associated with the neighboring block;
• splitting the current block of video data into a plurality of sub-partitions based on the determined split type;
• and
• coding the plurality of sub-partitions.

A non-transitory computer-readable storage medium storing instructions that, when executed, cause one or more processors of a device configured to code video data to:

• determine an intra prediction mode associated with a neighboring block of the current block of video data;
• determine a split type of the current block of video data based on the intra prediction mode associated with the neighboring block;
• split the current block of video data into a plurality of sub-partitions based on the determined split type;
• and
• code the plurality of sub-partitions.

An apparatus configured to code video data, the apparatus comprising:

• means for determining an intra prediction mode associated with a neighboring block of a current block of video data;
• means for determining a split type of the current block of video data based on the intra prediction mode associated with the neighboring block;
• means for splitting the current block of video data into a plurality of sub-partitions based on the determined split type;
• and
• means for coding the plurality of sub-partitions.