src/gallium/drivers/nvfx/nvfx_state_scissor.c

   1 #include "nvfx_context.h"
   2
   3 static boolean
   4 nvfx_state_scissor_validate(struct nvfx_context *nvfx)
   5 {
   6         struct pipe_rasterizer_state *rast = &nvfx->rasterizer->pipe;
   7         struct pipe_scissor_state *s = &nvfx->scissor;
   8         struct nouveau_stateobj *so;
   9
  10         if (nvfx->state.hw[NVFX_STATE_SCISSOR] &&
  11             (rast->scissor == 0 && nvfx->state.scissor_enabled == 0))
  12                 return FALSE;
  13         nvfx->state.scissor_enabled = rast->scissor;
  14
  15         so = so_new(1, 2, 0);
  16         so_method(so, nvfx->screen->eng3d, NV34TCL_SCISSOR_HORIZ, 2);
  17         if (nvfx->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, &nvfx->state.hw[NVFX_STATE_SCISSOR]);
  26         so_ref(NULL, &so);
  27         return TRUE;
  28 }
  29
  30 struct nvfx_state_entry nvfx_state_scissor = {
  31         .validate = nvfx_state_scissor_validate,
  32         .dirty = {
  33                 .pipe = NVFX_NEW_SCISSOR | NVFX_NEW_RAST,
  34                 .hw = NVFX_STATE_SCISSOR
  35         }
  36 };