Properly round down GS_REG_ST

kernle32dll · kernle32dll · commit 148d8aafca06 · 2020-05-21T10:39:31.000+02:00
According to the GS manual, the 8 lower bits of S and T of GS_REG_ST must be rounded down. This commit just masks them away, which just serves that purpose.
diff --git a/Source/gs/GSHandler.cpp b/Source/gs/GSHandler.cpp
@@ -611,6 +611,9 @@ void CGSHandler::WriteRegisterImpl(uint8 nRegister, uint64 nData)
 
 	switch(nRegister)
 	{
+	case GS_REG_ST:
+		m_nReg[nRegister] &= 0xFFFFFF00FFFFFF00;
+		break;
 	case GS_REG_TEX0_1:
 	case GS_REG_TEX0_2:
 	{

Original file line number	Diff line number	Diff line change
`@@ -611,6 +611,9 @@ void CGSHandler::WriteRegisterImpl(uint8 nRegister, uint64 nData)`
`611`	`611`
`612`	`612`	`switch(nRegister)`
`613`	`613`	`{`
	`614`	`+ case GS_REG_ST:`
	`615`	`+ m_nReg[nRegister] &= 0xFFFFFF00FFFFFF00;`
	`616`	`+ break;`
`614`	`617`	`case GS_REG_TEX0_1:`
`615`	`618`	`case GS_REG_TEX0_2:`
`616`	`619`	`{`