To be pedantic the RDP was the rasterizer (fixed function) which was fed by the RSP processor. The RSP ran the display-list commands from the cpu/memory (very

To be pedantic the RDP was the rasterizer (fixed function) which was fed by the RSP processor. The RSP ran the display-list commands from the cpu/memory (very similar to a Vulkan command list) and did vertex transforms/clipping before feeding its output to the RDP. Most games used one of a few Nintendo provided RSP programs although later in the machine's lifetime they opened up the RSP compiler and tools to developers.