src/gallium/drivers/nv40/nv40_state_scissor.c

   1 #include "nv40_context.h"
   2
   3 static boolean
   4 nv40_state_scissor_validate(struct nv40_context *nv40)
   5 {
   6         struct pipe_rasterizer_state *rast = &nv40->rasterizer->pipe;
   7         struct pipe_scissor_state *s = &nv40->scissor;
   8         struct nouveau_stateobj *so;
   9
  10         if (nv40->state.hw[NV40_STATE_SCISSOR] &&
  11             (rast->scissor == 0 && nv40->state.scissor_enabled == 0))
  12                 return FALSE;
  13         nv40->state.scissor_enabled = rast->scissor;
  14
  15         so = so_new(3, 0);
  16         so_method(so, nv40->screen->curie, NV40TCL_SCISSOR_HORIZ, 2);
  17         if (nv40->state.scissor_enabled) {
  18                 so_data  (so, ((s->maxx - s->minx) << 16) | s->minx);
  19                 so_data  (so, ((s->maxy - s->miny) << 16) | s->miny);
  20         } else {
  21                 so_data  (so, 4096 << 16);
  22                 so_data  (so, 4096 << 16);
  23         }
  24
  25         so_ref(so, &nv40->state.hw[NV40_STATE_SCISSOR]);
  26         return TRUE;
  27 }
  28
  29 struct nv40_state_entry nv40_state_scissor = {
  30         .validate = nv40_state_scissor_validate,
  31         .dirty = {
  32                 .pipe = NV40_NEW_SCISSOR | NV40_NEW_RAST,
  33                 .hw = NV40_STATE_SCISSOR
  34         }
  35 };