-void setup_spans_up_left(psx_gpu_struct *psx_gpu, vertex_struct *v_a,
- vertex_struct *v_b, vertex_struct *v_c);
-void setup_spans_up_right(psx_gpu_struct *psx_gpu, vertex_struct *v_a,
- vertex_struct *v_b, vertex_struct *v_c);
-void setup_spans_down_left(psx_gpu_struct *psx_gpu, vertex_struct *v_a,
- vertex_struct *v_b, vertex_struct *v_c);
-void setup_spans_down_right(psx_gpu_struct *psx_gpu, vertex_struct *v_a,
- vertex_struct *v_b, vertex_struct *v_c);
-void setup_spans_up_a(psx_gpu_struct *psx_gpu, vertex_struct *v_a,
- vertex_struct *v_b, vertex_struct *v_c);
-void setup_spans_up_b(psx_gpu_struct *psx_gpu, vertex_struct *v_a,
- vertex_struct *v_b, vertex_struct *v_c);
-void setup_spans_down_a(psx_gpu_struct *psx_gpu, vertex_struct *v_a,
- vertex_struct *v_b, vertex_struct *v_c);
-void setup_spans_down_b(psx_gpu_struct *psx_gpu, vertex_struct *v_a,
- vertex_struct *v_b, vertex_struct *v_c);
-void setup_spans_up_down(psx_gpu_struct *psx_gpu, vertex_struct *v_a,
- vertex_struct *v_b, vertex_struct *v_c);
-
-