Fragment Data
Data passed along each fragment pipeline stage:
- R,G,B,A (parameterized widths)
- X,Y,Z (will parameterize these widths)
- Fog factor (paramterized widths), Fog color (R,G,B,A)
Pipeline stage cost will be Width of fragment (bits) multiplied by pipeline register cost.
- This is pessimistic; if data is no longer needed after a particular pipeline stage, then it is dropped from the pipeline
- e.g., after the fog stage, the fog data is no longer carried though the pipeline