protomatter: more memory allocation fixes

 - bump supervisor alloc count by 4 (we actually use 5)
 - move reconstruct to after gc heap is reset
 - destroy protomatter object entirely if not used by a FramebufferDisplay
 - ensure previous supervisor allocations are released
 - zero out pointers so GC can collect them

2 files changed, 10 insertions, 1 deletions

diff --git a/supervisor/shared/display.c b/supervisor/shared/display.c
index 855432d64..050ba6e19 100644
--- a/supervisor/shared/display.c
+++ b/supervisor/shared/display.c
@@ -29,6 +29,7 @@
 #include <string.h>
 
 #include "py/mpstate.h"
+#include "shared-module/displayio/__init__.h"
 #include "shared-bindings/displayio/Group.h"
 #include "shared-bindings/displayio/Palette.h"
 #include "shared-bindings/displayio/TileGrid.h"
@@ -112,6 +113,14 @@ void supervisor_display_move_memory(void) {
         grid->inline_tiles = false;
     }
     MP_STATE_VM(terminal_tilegrid_tiles) = NULL;
+    #if CIRCUITPY_PROTOMATTER
+    for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
+        if (displays[i].protomatter.base.type == &protomatter_Protomatter_type) {
+            protomatter_protomatter_obj_t * pm = &displays[i].protomatter;
+                common_hal_protomatter_protomatter_reconstruct(pm, NULL);
+        }
+    }
+    #endif
     #endif
 }
 
diff --git a/supervisor/shared/memory.c b/supervisor/shared/memory.c
index 51037bd6d..d52334eb4 100755
--- a/supervisor/shared/memory.c
+++ b/supervisor/shared/memory.c
@@ -31,7 +31,7 @@
 
 #include "supervisor/shared/display.h"
 
-#define CIRCUITPY_SUPERVISOR_ALLOC_COUNT 8
+#define CIRCUITPY_SUPERVISOR_ALLOC_COUNT (12)
 
 static supervisor_allocation allocations[CIRCUITPY_SUPERVISOR_ALLOC_COUNT];
 // We use uint32_t* to ensure word (4 byte) alignment.