Esempio n. 1
0
/**
 * Do setup for triangle rasterization, then render the triangle.
 */
void
sp_setup_tri(struct setup_context *setup,
             const float (*v0)[4],
             const float (*v1)[4],
             const float (*v2)[4])
{
   float det;
   uint layer = 0;
   unsigned viewport_index = 0;
#if DEBUG_VERTS
   debug_printf("Setup triangle:\n");
   print_vertex(setup, v0);
   print_vertex(setup, v1);
   print_vertex(setup, v2);
#endif

   if (setup->softpipe->no_rast || setup->softpipe->rasterizer->rasterizer_discard)
      return;
   
   det = calc_det(v0, v1, v2);
   /*
   debug_printf("%s\n", __FUNCTION__ );
   */

#if DEBUG_FRAGS
   setup->numFragsEmitted = 0;
   setup->numFragsWritten = 0;
#endif

   if (!setup_sort_vertices( setup, det, v0, v1, v2 ))
      return;

   setup_tri_coefficients( setup );
   setup_tri_edges( setup );

   assert(setup->softpipe->reduced_prim == PIPE_PRIM_TRIANGLES);

   setup->span.y = 0;
   setup->span.right[0] = 0;
   setup->span.right[1] = 0;
   /*   setup->span.z_mode = tri_z_mode( setup->ctx ); */
   if (setup->softpipe->layer_slot > 0) {
      layer = *(unsigned *)setup->vprovoke[setup->softpipe->layer_slot];
      layer = MIN2(layer, setup->max_layer);
   }
   setup->quad[0].input.layer = layer;

   if (setup->softpipe->viewport_index_slot > 0) {
      unsigned *udata = (unsigned*)v0[setup->softpipe->viewport_index_slot];
      viewport_index = sp_clamp_viewport_idx(*udata);
   }
   setup->quad[0].input.viewport_index = viewport_index;

   /*   init_constant_attribs( setup ); */

   if (setup->oneoverarea < 0.0) {
      /* emaj on left:
       */
      subtriangle(setup, &setup->emaj, &setup->ebot, setup->ebot.lines, viewport_index);
      subtriangle(setup, &setup->emaj, &setup->etop, setup->etop.lines, viewport_index);
   }
   else {
      /* emaj on right:
       */
      subtriangle(setup, &setup->ebot, &setup->emaj, setup->ebot.lines, viewport_index);
      subtriangle(setup, &setup->etop, &setup->emaj, setup->etop.lines, viewport_index);
   }

   flush_spans( setup );

   if (setup->softpipe->active_statistics_queries) {
      setup->softpipe->pipeline_statistics.c_primitives++;
   }

#if DEBUG_FRAGS
   printf("Tri: %u frags emitted, %u written\n",
          setup->numFragsEmitted,
          setup->numFragsWritten);
#endif
}
Esempio n. 2
0
/**
 * Do setup for triangle rasterization, then render the triangle.
 */
void sp_setup_tri( struct setup_context *setup,
                const float (*v0)[4],
                const float (*v1)[4],
                const float (*v2)[4] )
{
   float det;

#if DEBUG_VERTS
   debug_printf("Setup triangle:\n");
   print_vertex(setup, v0);
   print_vertex(setup, v1);
   print_vertex(setup, v2);
#endif

   if (setup->softpipe->no_rast)
      return;
   
   det = calc_det(v0, v1, v2);
   /*
   debug_printf("%s\n", __FUNCTION__ );
   */

#if DEBUG_FRAGS
   setup->numFragsEmitted = 0;
   setup->numFragsWritten = 0;
#endif

   if (cull_tri( setup, det ))
      return;

   if (!setup_sort_vertices( setup, det, v0, v1, v2 ))
      return;
   setup_tri_coefficients( setup );
   setup_tri_edges( setup );

   assert(setup->softpipe->reduced_prim == PIPE_PRIM_TRIANGLES);

   setup->span.y = 0;
   setup->span.right[0] = 0;
   setup->span.right[1] = 0;
   /*   setup->span.z_mode = tri_z_mode( setup->ctx ); */

   /*   init_constant_attribs( setup ); */

   if (setup->oneoverarea < 0.0) {
      /* emaj on left:
       */
      subtriangle( setup, &setup->emaj, &setup->ebot, setup->ebot.lines );
      subtriangle( setup, &setup->emaj, &setup->etop, setup->etop.lines );
   }
   else {
      /* emaj on right:
       */
      subtriangle( setup, &setup->ebot, &setup->emaj, setup->ebot.lines );
      subtriangle( setup, &setup->etop, &setup->emaj, setup->etop.lines );
   }

   flush_spans( setup );

#if DEBUG_FRAGS
   printf("Tri: %u frags emitted, %u written\n",
          setup->numFragsEmitted,
          setup->numFragsWritten);
#endif
}