'FIFO full' hack for SM64DS.

GPU3D.cpp

@@ -841,8 +841,6 @@ void SubmitVertex()
 
 
 
-int logflag = 0;
-
 void CmdFIFOWrite(CmdFIFOEntry& entry)
 {
     if (CmdFIFO->IsEmpty() && !CmdPIPE->IsFull())
@@ -853,10 +851,17 @@ void CmdFIFOWrite(CmdFIFOEntry& entry)
     {
         if (CmdFIFO->IsFull())
         {
-            if (!logflag) printf("!!! GX FIFO FULL\n");
-            logflag = 1;
-            //NDS::debug(0);
-            return;
+            //printf("!!! GX FIFO FULL\n");
+            //return;
+
+            // temp. hack
+            // SM64DS seems to overflow the FIFO occasionally
+            // either leftover bugs in our implementation, or the game accidentally doing that
+            // TODO: investigate.
+            // TODO: implement this behavior properly (freezes the bus until the FIFO isn't full anymore)
+
+            while (CmdFIFO->IsFull())
+                ExecuteCommand();
         }
 
         CmdFIFO->Write(entry);
@@ -878,8 +883,6 @@ CmdFIFOEntry CmdFIFORead()
         CheckFIFOIRQ();
     }
 
-    logflag = 0;
-
     return ret;
 }
 

GPU3D.h

@@ -56,6 +56,8 @@ bool Init();
 void DeInit();
 void Reset();
 
+void ExecuteCommand();
+
 void Run(s32 cycles);
 void CheckFIFOIRQ();
 void CheckFIFODMA();

NDS.cpp

@@ -311,7 +311,7 @@ void Reset()
     // test
     //LoadROM();
     //LoadFirmware();
-    if (NDSCart::LoadROM("rom/nsmb.nds"))
+    if (NDSCart::LoadROM("rom/sm64ds.nds"))
         Running = true; // hax
 }
 

melonDS.depend

@@ -146,7 +146,7 @@
 	"NDS.h"
 	"NDSCart.h"
 
-1487287868 c:\documents\sources\melonds\gpu3d.h
+1487356069 c:\documents\sources\melonds\gpu3d.h
 
 1487354054 source:c:\documents\sources\melonds\gpu3d.cpp
 	<stdio.h>