A graphics system configured to apply multiple layers of texture information
to
primitives. The graphics system receives parameters defining a primitive and performs
a size test on the primitive. If the size test cannot guarantee that a fragment
size of the primitive is less than or equal to a fragment capacity of a texture
accumulation buffer, the primitive is divided into subprimitives, and the graphics
system applies the multiple layers of texture to fragments which intersect the
primitive. The graphics system switches from a current layer to the layer next
when it has applied textures corresponding to the current layer to all the fragments
intersecting the primitive. The graphics system stores color values associated
with the primitive fragments in the texture accumulation buffer between the application
of successive texture layers.
