diff --git a/desmume/src/MMU.cpp b/desmume/src/MMU.cpp
index e72bece28..3d731d455 100644
--- a/desmume/src/MMU.cpp
+++ b/desmume/src/MMU.cpp
@@ -2809,6 +2809,10 @@ static u16 FASTCALL _MMU_ARM9_read16(u32 adr)
 				return (gfx3d_GetNumPolys()&2047);
 			case 0x04000606:
 				return (gfx3d_GetNumVertex()&8191);
+			case 0x04000630:
+			case 0x04000632:
+			case 0x04000634:
+				return gfx3d_glGetVecRes((adr & 0xF) >> 1);
 			// ============================================= 3D end
 			case REG_IME :
 				return (u16)MMU.reg_IME[ARMCPU_ARM9];
@@ -2925,6 +2929,14 @@ static u32 FASTCALL _MMU_ARM9_read32(u32 adr)
 				return (gfx3d_GetNumPolys()&2047) & ((gfx3d_GetNumVertex()&8191) << 16);
 				//LOG ("read32 - RAM_COUNT -> 0x%X", ((u32 *)(MMU.MMU_MEM[ARMCPU_ARM9][(adr>>20)&0xFF]))[(adr&MMU.MMU_MASK[ARMCPU_ARM9][(adr>>20)&0xFF])>>2]);
 			}
+
+			case 0x04000620:
+			case 0x04000624:
+			case 0x04000628:
+			case 0x0400062C:
+			{
+				return gfx3d_glGetPosRes((adr & 0xF) >> 2);
+			}
 			//	======================================== 3D end
 			
 			case REG_IME :
diff --git a/desmume/src/gfx3d.cpp b/desmume/src/gfx3d.cpp
index 4955e3b5f..5796b0a6c 100644
--- a/desmume/src/gfx3d.cpp
+++ b/desmume/src/gfx3d.cpp
@@ -999,16 +999,16 @@ void gfx3d_glVecTest(unsigned long v)
 	//INFO("NDS_glVecTest\n");
 }
 
-void gfx3d_glGetPosRes(unsigned int index)
+unsigned int gfx3d_glGetPosRes(unsigned int index)
 {
 	//INFO("NDS_glGetPosRes\n");
-	//return 0;
+	return 0;
 }
 
-void gfx3d_glGetVecRes(unsigned int index)
+unsigned short gfx3d_glGetVecRes(unsigned int index)
 {
 	//INFO("NDS_glGetVecRes\n");
-	//return 0;
+	return 0;
 }
 
 #if 0
diff --git a/desmume/src/gfx3d.h b/desmume/src/gfx3d.h
index 110788436..f1f19622d 100644
--- a/desmume/src/gfx3d.h
+++ b/desmume/src/gfx3d.h
@@ -199,8 +199,8 @@ void gfx3d_glAlphaFunc(unsigned long v);
 BOOL gfx3d_glBoxTest(unsigned long v);
 BOOL gfx3d_glPosTest(unsigned long v);
 void gfx3d_glVecTest(unsigned long v);
-void gfx3d_glGetPosRes(unsigned int index);
-void gfx3d_glGetVecRes(unsigned int index);
+unsigned int gfx3d_glGetPosRes(unsigned int index);
+unsigned short gfx3d_glGetVecRes(unsigned int index);
 void gfx3d_glFlush(unsigned long v);
 void gfx3d_VBlankSignal();
 void gfx3d_VBlankEndSignal();