1. A graphics accelerator, comprising: command preprocessor having a 3D geometry pipeline and a direct port pipeline, the command preprocessor accessing input vertex packets and direct port data over the host bus, the 3D geometry pipeline reformatting the input vertex packets into reformatted vertex packets according to predefined vertex format, the 3D geometry pipeline assembling the reformatted vertex packets into an output geometry packet and transferring the output geometry packet over a floating-point bus, the direct port pipeline transferring the direct port data over a draw bus; at least one floating-point processor coupled to communicate over the floating-point bus, the floating-point processor receiving the output geometry packet over the floating-point bus, generating a draw packet, and transferring the draw packet over the draw bus, the draw packet containing parameters that define a geometry object; a plurality of draw processors concurrently receiving the draw packet over the draw bus, each draw processor performing edgewalking and scan interpolation functions corresponding to the geometry object, such that each draw processor renders a subset of pixels corresponding to the geometry object; frame buffer comprising a plurality of interleave banks, each interleave bank receiving the subset of pixels from one of the draw processors.