System, method, and computer program product for processing primitive specific attributes generated by a fast geometry shader

A non-transitory computer readable medium, storing instructions that, when executed by a processor, cause the processor to perform steps, comprising:

• determining that a portion of a graphics processor is operating in a fast geometry shader mode;
• determining that a vertex associated with a set of per-vertex attributes is a shared vertex;
• determining that the shared vertex is a non-provoking vertex corresponding to a first primitive that is associated with a first set of per-primitive attributes;
• determining that the shared vertex is a provoking vertex corresponding to a second primitive that is associated with a second set of per-primitive attributes;
• storing only one set of the per-vertex attributes associated with the shared vertex;
• and
• storing only one of the second set of per-primitive attributes associated with the second primitive.

A system, comprising:

• a graphics processor configured to:
• determine that a portion of a graphics processor is operating in a fast geometry shader mode;
• determine that a vertex associated with a set of per-vertex attributes is a shared vertex;
• determine that the shared vertex is a non-provoking vertex corresponding to a first primitive that is associated with a first set of per-primitive attributes;
• determine that the shared vertex is a provoking vertex corresponding to a second primitive that is associated with a second set of per-primitive attributes;
• store only one set of the per-vertex attributes associated with the shared vertex;
• and
• store only one of the second set of per-primitive attributes associated with the second primitive.