[pixel] detach old sprite when blitting onto existing plane

src/demo/keller.c

@@ -42,6 +42,7 @@ visualize(struct notcurses* nc, struct ncvisual* ncv){
     if((n = ncvisual_render(nc, ncv, &vopts)) == NULL){
       ncplane_printf_aligned(stdn, ncplane_dim_y(stdn) / 2 - 1, NCALIGN_CENTER, "not available");
     }else{
+      // FIXME shouldn't need this once z-axis is united with bitmap graphics
       ncplane_move_below(n, stdn);
       if(vopts.blitter == NCBLIT_PIXEL){
         DEMO_RENDER(nc);

src/demo/yield.c

@@ -107,6 +107,7 @@ int yield_demo(struct notcurses* nc){
     tfilled += pfilled;
     if(ncvisual_render(nc, wmv, &vopts) == NULL){
       ncvisual_destroy(wmv);
+      ncplane_destroy(vopts.n);
       return -1;
     }
     if(tfilled > threshold_painted){

src/lib/internal.h

@@ -1105,6 +1105,9 @@ plane_blit_sixel(ncplane* n, const char* s, int bytes, int leny, int lenx,
       c->width = lenx;
     }
   }
+  if(n->sprite){
+    sprixel_hide(n->sprite);
+  }
   n->sprite = spx;
   return 0;
 }

src/lib/visual.c

@@ -481,7 +481,7 @@ ncplane* ncvisual_render_cells(notcurses* nc, ncvisual* ncv, const struct blitse
   return n;
 }
 
-ncplane* ncvisual_render_pixels(tinfo* tcache, ncvisual* ncv, const struct blitset* bset,
+ncplane* ncvisual_render_pixels(notcurses* nc, ncvisual* ncv, const struct blitset* bset,
                                 int placey, int placex, int begy, int begx,
                                 ncplane* n, ncscale_e scaling, ncplane* stdn){
   int disprows, dispcols;
@@ -493,15 +493,15 @@ ncplane* ncvisual_render_pixels(tinfo* tcache, ncvisual* ncv, const struct blits
   if(n == NULL){ // create plane
     if(scaling != NCSCALE_NONE && scaling != NCSCALE_NONE_HIRES){
       ncplane_dim_yx(stdn, &disprows, &dispcols);
-      dispcols *= tcache->cellpixx;
-      disprows *= tcache->cellpixy;
+      dispcols *= nc->tcache.cellpixx;
+      disprows *= nc->tcache.cellpixy;
     }
 //fprintf(stderr, "PLACING NEW PLANE: %d/%d @ %d/%d\n", disprows, dispcols, placey, placex);
     struct ncplane_options nopts = {
       .y = placey,
       .x = placex,
-      .rows = disprows / tcache->cellpixy + !!(disprows % tcache->cellpixy),
-      .cols = dispcols / tcache->cellpixx + !!(dispcols % tcache->cellpixx),
+      .rows = disprows / nc->tcache.cellpixy + !!(disprows % nc->tcache.cellpixy),
+      .cols = dispcols / nc->tcache.cellpixx + !!(dispcols % nc->tcache.cellpixx),
       .userptr = NULL,
       .name = "rgba",
       .resizecb = NULL,
@@ -515,21 +515,21 @@ ncplane* ncvisual_render_pixels(tinfo* tcache, ncvisual* ncv, const struct blits
   }else{
     if(scaling != NCSCALE_NONE && scaling != NCSCALE_NONE_HIRES){
       ncplane_dim_yx(n, &disprows, &dispcols);
-      dispcols *= tcache->cellpixx;
-      disprows *= tcache->cellpixy;
-      dispcols -= (placex * tcache->cellpixx + 1);
-      disprows -= (placey * tcache->cellpixy + 1);
+      dispcols *= nc->tcache.cellpixx;
+      disprows *= nc->tcache.cellpixy;
+      dispcols -= (placex * nc->tcache.cellpixx + 1);
+      disprows -= (placey * nc->tcache.cellpixy + 1);
     }
   }
   if(scaling == NCSCALE_SCALE || scaling == NCSCALE_SCALE_HIRES){
     scale_visual(ncv, &disprows, &dispcols);
   }
-//fprintf(stderr, "pblit: %dx%d <- %dx%d of %d/%d stride %u @%dx%d %p %u\n", disprows, dispcols, begy, begx, ncv->rows, ncv->cols, ncv->rowstride, placey, placex, ncv->data, ncplane_notcurses(stdn)->tcache.cellpixx);
+//fprintf(stderr, "pblit: %dx%d <- %dx%d of %d/%d stride %u @%dx%d %p %u\n", disprows, dispcols, begy, begx, ncv->rows, ncv->cols, ncv->rowstride, placey, placex, ncv->data, ncplane_notcurses(stdn)->nc->tcache.cellpixx);
   blitterargs bargs;
-  bargs.pixel.celldimx = ncplane_notcurses(stdn)->tcache.cellpixx;
-  bargs.pixel.celldimy = ncplane_notcurses(stdn)->tcache.cellpixy;
-  bargs.pixel.colorregs = ncplane_notcurses(stdn)->tcache.color_registers;
-  bargs.pixel.sprixelid = tcache->sprixelnonce++;
+  bargs.pixel.celldimx = nc->tcache.cellpixx;
+  bargs.pixel.celldimy = nc->tcache.cellpixy;
+  bargs.pixel.colorregs = nc->tcache.color_registers;
+  bargs.pixel.sprixelid = nc->tcache.sprixelnonce++;
   if(ncvisual_blit(ncv, disprows, dispcols, n, bset,
                    begy, begx, disprows, dispcols, &bargs)){
     ncplane_destroy(n);
@@ -585,7 +585,7 @@ ncplane* ncvisual_render(notcurses* nc, ncvisual* ncv, const struct ncvisual_opt
                               n, scaling,
                               vopts && (vopts->flags & NCVISUAL_OPTION_BLEND));
   }else{
-    n = ncvisual_render_pixels(&nc->tcache, ncv, bset, placey, placex, begy, begx,
+    n = ncvisual_render_pixels(nc, ncv, bset, placey, placex, begy, begx,
                                n, scaling, notcurses_stdplane(nc));
   }
   return n;