src/gallium/drivers/nvfx/nvfx_state_scissor.c

   1 #include "nvfx_context.h"
   2
   3 void
   4 nvfx_state_scissor_validate(struct nvfx_context *nvfx)
   5 {
   6         struct nouveau_channel *chan = nvfx->screen->base.channel;
   7         struct pipe_rasterizer_state *rast = &nvfx->rasterizer->pipe;
   8         struct pipe_scissor_state *s = &nvfx->scissor;
   9
  10         if ((rast->scissor == 0 && nvfx->state.scissor_enabled == 0))
  11                 return;
  12         nvfx->state.scissor_enabled = rast->scissor;
  13
  14         WAIT_RING(chan, 3);
  15         OUT_RING(chan, RING_3D(NV34TCL_SCISSOR_HORIZ, 2));
  16         if (nvfx->state.scissor_enabled) {
  17                 OUT_RING(chan, ((s->maxx - s->minx) << 16) | s->minx);
  18                 OUT_RING(chan, ((s->maxy - s->miny) << 16) | s->miny);
  19         } else {
  20                 OUT_RING(chan, 4096 << 16);
  21                 OUT_RING(chan, 4096 << 16);
  22         }
  23 }