X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=pcsx_rearmed.git;a=blobdiff_plain;f=libpcsxcore%2Fpsxcounters.c;h=3e6d417e91fabb67b2447ec0d660190c7b0ff581;hp=f6c1bc448cb2e0941821fd1b62dd49aab91c7a0a;hb=a29f182fb4cf03fb74ec809746cee757f6d47715;hpb=ab948f7e6d437dddd070000f36489d7e983eb4ad

diff --git a/libpcsxcore/psxcounters.c b/libpcsxcore/psxcounters.c
index f6c1bc44..3e6d417e 100644
--- a/libpcsxcore/psxcounters.c
+++ b/libpcsxcore/psxcounters.c
@@ -22,16 +22,11 @@
  */
 
 #include "psxcounters.h"
+#include "gpu.h"
+#include "debug.h"
 
 /******************************************************************************/
 
-typedef struct Rcnt
-{
-    u16 mode, target;
-    u32 rate, irq, counterState, irqState;
-    u32 cycle, cycleStart;
-} Rcnt;
-
 enum
 {
     Rc0Gate           = 0x0001, // 0    not implemented
@@ -65,18 +60,22 @@ static const u32 CountToOverflow  = 0;
 static const u32 CountToTarget    = 1;
 
 static const u32 FrameRate[]      = { 60, 50 };
-static const u32 VBlankStart[]    = { 240, 256 };
-static const u32 HSyncTotal[]     = { 262, 312 };
-static const u32 SpuUpdInterval[] = { 23, 22 };
+static const u32 HSyncTotal[]     = { 263, 313 };
+static const u32 SpuUpdInterval[] = { 32, 32 };
+#define VBlankStart 240
 
-static const s32 VerboseLevel     = 0;
+#define VERBOSE_LEVEL 0
+static const s32 VerboseLevel     = VERBOSE_LEVEL;
 
 /******************************************************************************/
 
-static Rcnt rcnts[ CounterQuantity ];
+Rcnt rcnts[ CounterQuantity ];
 
-static u32 hSyncCount = 0;
+u32 hSyncCount = 0;
+u32 frame_counter = 0;
 static u32 spuSyncCount = 0;
+static u32 hsync_steps = 0;
+static u32 base_cycle = 0;
 
 u32 psxNextCounter = 0, psxNextsCounter = 0;
 
@@ -89,8 +88,9 @@ void setIrq( u32 irq )
 }
 
 static
-void verboseLog( s32 level, const char *str, ... )
+void verboseLog( u32 level, const char *str, ... )
 {
+#if VERBOSE_LEVEL > 0
     if( level <= VerboseLevel )
     {
         va_list va;
@@ -103,6 +103,7 @@ void verboseLog( s32 level, const char *str, ... )
         printf( "%s", buf );
         fflush( stdout );
     }
+#endif
 }
 
 /******************************************************************************/
@@ -127,7 +128,7 @@ void _psxRcntWcount( u32 index, u32 value )
     }
     else
     {
-        rcnts[index].cycle = 0xffff * rcnts[index].rate;
+        rcnts[index].cycle = 0x10000 * rcnts[index].rate;
         rcnts[index].counterState = CountToOverflow;
     }
 }
@@ -139,17 +140,64 @@ u32 _psxRcntRcount( u32 index )
 
     count  = psxRegs.cycle;
     count -= rcnts[index].cycleStart;
-    count /= rcnts[index].rate;
+    if (rcnts[index].rate > 1)
+        count /= rcnts[index].rate;
 
-    if( count > 0xffff )
+    if( count > 0x10000 )
     {
-        verboseLog( 1, "[RCNT %i] rcount > 0xffff: %x\n", index, count );
-        count &= 0xffff;
+        verboseLog( 1, "[RCNT %i] rcount > 0x10000: %x\n", index, count );
     }
+    count &= 0xffff;
 
     return count;
 }
 
+static
+void _psxRcntWmode( u32 index, u32 value )
+{
+    rcnts[index].mode = value;
+
+    switch( index )
+    {
+        case 0:
+            if( value & Rc0PixelClock )
+            {
+                rcnts[index].rate = 5;
+            }
+            else
+            {
+                rcnts[index].rate = 1;
+            }
+        break;
+        case 1:
+            if( value & Rc1HSyncClock )
+            {
+                rcnts[index].rate = (PSXCLK / (FrameRate[Config.PsxType] * HSyncTotal[Config.PsxType]));
+            }
+            else
+            {
+                rcnts[index].rate = 1;
+            }
+        break;
+        case 2:
+            if( value & Rc2OneEighthClock )
+            {
+                rcnts[index].rate = 8;
+            }
+            else
+            {
+                rcnts[index].rate = 1;
+            }
+
+            // TODO: wcount must work.
+            if( value & Rc2Disable )
+            {
+                rcnts[index].rate = 0xffffffff;
+            }
+        break;
+    }
+}
+
 /******************************************************************************/
 
 static
@@ -176,6 +224,9 @@ void psxRcntSet()
             psxNextCounter = countToUpdate;
         }
     }
+
+    psxRegs.interrupt |= (1 << PSXINT_RCNT);
+    new_dyna_set_event(PSXINT_RCNT, psxNextCounter);
 }
 
 /******************************************************************************/
@@ -183,50 +234,58 @@ void psxRcntSet()
 static
 void psxRcntReset( u32 index )
 {
-    u32 count;
+    u32 rcycles;
+
+    rcnts[index].mode |= RcUnknown10;
 
     if( rcnts[index].counterState == CountToTarget )
     {
+        rcycles = psxRegs.cycle - rcnts[index].cycleStart;
         if( rcnts[index].mode & RcCountToTarget )
         {
-            count  = psxRegs.cycle;
-            count -= rcnts[index].cycleStart;
-            count /= rcnts[index].rate;
-            count -= rcnts[index].target;
+            rcycles -= rcnts[index].target * rcnts[index].rate;
+            rcnts[index].cycleStart = psxRegs.cycle - rcycles;
         }
         else
         {
-            count = _psxRcntRcount( index );
+            rcnts[index].cycle = 0x10000 * rcnts[index].rate;
+            rcnts[index].counterState = CountToOverflow;
         }
 
-        _psxRcntWcount( index, count );
-
         if( rcnts[index].mode & RcIrqOnTarget )
         {
             if( (rcnts[index].mode & RcIrqRegenerate) || (!rcnts[index].irqState) )
             {
-                verboseLog( 3, "[RCNT %i] irq: %x\n", index, count );
+                verboseLog( 3, "[RCNT %i] irq\n", index );
                 setIrq( rcnts[index].irq );
                 rcnts[index].irqState = 1;
             }
         }
 
         rcnts[index].mode |= RcCountEqTarget;
+
+        if( rcycles < 0x10000 * rcnts[index].rate )
+            return;
     }
-    else if( rcnts[index].counterState == CountToOverflow )
+
+    if( rcnts[index].counterState == CountToOverflow )
     {
-        count  = psxRegs.cycle;
-        count -= rcnts[index].cycleStart;
-        count /= rcnts[index].rate;
-        count -= 0xffff;
+        rcycles = psxRegs.cycle - rcnts[index].cycleStart;
+        rcycles -= 0x10000 * rcnts[index].rate;
 
-        _psxRcntWcount( index, count );
+        rcnts[index].cycleStart = psxRegs.cycle - rcycles;
+
+        if( rcycles < rcnts[index].target * rcnts[index].rate )
+        {
+            rcnts[index].cycle = rcnts[index].target * rcnts[index].rate;
+            rcnts[index].counterState = CountToTarget;
+        }
 
         if( rcnts[index].mode & RcIrqOnOverflow )
         {
             if( (rcnts[index].mode & RcIrqRegenerate) || (!rcnts[index].irqState) )
             {
-                verboseLog( 3, "[RCNT %i] irq: %x\n", index, count );
+                verboseLog( 3, "[RCNT %i] irq\n", index );
                 setIrq( rcnts[index].irq );
                 rcnts[index].irqState = 1;
             }
@@ -234,10 +293,6 @@ void psxRcntReset( u32 index )
 
         rcnts[index].mode |= RcOverflow;
     }
-
-    rcnts[index].mode |= RcUnknown10;
-
-    psxRcntSet();
 }
 
 void psxRcntUpdate()
@@ -267,10 +322,11 @@ void psxRcntUpdate()
     // rcnt base.
     if( cycle - rcnts[3].cycleStart >= rcnts[3].cycle )
     {
-        psxRcntReset( 3 );
+        u32 leftover_cycles = cycle - rcnts[3].cycleStart - rcnts[3].cycle;
+        u32 next_vsync, next_lace;
 
-        spuSyncCount++;
-        hSyncCount++;
+        spuSyncCount += hsync_steps;
+        hSyncCount += hsync_steps;
 
         // Update spu.
         if( spuSyncCount >= SpuUpdInterval[Config.PsxType] )
@@ -284,28 +340,53 @@ void psxRcntUpdate()
         }
         
         // VSync irq.
-        if( hSyncCount == VBlankStart[Config.PsxType] )
+        if( hSyncCount == VBlankStart )
         {
-            GPU_vBlank( 1, &hSyncCount );
-            
-            // For the best times. :D
-            //setIrq( 0x01 );
+            HW_GPU_STATUS &= ~PSXGPU_LCF;
+            GPU_vBlank( 1, 0 );
+            setIrq( 0x01 );
+
+            EmuUpdate();
+            GPU_updateLace();
         }
         
         // Update lace. (with InuYasha fix)
         if( hSyncCount >= (Config.VSyncWA ? HSyncTotal[Config.PsxType] / BIAS : HSyncTotal[Config.PsxType]) )
         {
             hSyncCount = 0;
+            frame_counter++;
 
-            GPU_vBlank( 0, &hSyncCount );
-            setIrq( 0x01 );
-
-            EmuUpdate();
-            GPU_updateLace();
+            gpuSyncPluginSR();
+            if( (HW_GPU_STATUS & PSXGPU_ILACE_BITS) == PSXGPU_ILACE_BITS )
+                HW_GPU_STATUS |= frame_counter << 31;
+            GPU_vBlank( 0, HW_GPU_STATUS >> 31 );
         }
+
+        // Schedule next call, in hsyncs
+        hsync_steps = SpuUpdInterval[Config.PsxType] - spuSyncCount;
+        next_vsync = VBlankStart - hSyncCount; // ok to overflow
+        next_lace = HSyncTotal[Config.PsxType] - hSyncCount;
+        if( next_vsync && next_vsync < hsync_steps )
+            hsync_steps = next_vsync;
+        if( next_lace && next_lace < hsync_steps )
+            hsync_steps = next_lace;
+
+        rcnts[3].cycleStart = cycle - leftover_cycles;
+        if (Config.PsxType)
+                // 20.12 precision, clk / 50 / 313 ~= 2164.14
+                base_cycle += hsync_steps * 8864320;
+        else
+                // clk / 60 / 263 ~= 2146.31
+                base_cycle += hsync_steps * 8791293;
+        rcnts[3].cycle = base_cycle >> 12;
+        base_cycle &= 0xfff;
     }
 
+    psxRcntSet();
+
+#ifndef NDEBUG
     DebugVSync();
+#endif
 }
 
 /******************************************************************************/
@@ -314,8 +395,6 @@ void psxRcntWcount( u32 index, u32 value )
 {
     verboseLog( 2, "[RCNT %i] wcount: %x\n", index, value );
 
-    psxRcntUpdate();
-
     _psxRcntWcount( index, value );
     psxRcntSet();
 }
@@ -324,52 +403,10 @@ void psxRcntWmode( u32 index, u32 value )
 {
     verboseLog( 1, "[RCNT %i] wmode: %x\n", index, value );
 
-    psxRcntUpdate();
+    _psxRcntWmode( index, value );
+    _psxRcntWcount( index, 0 );
 
-    rcnts[index].mode = value;
     rcnts[index].irqState = 0;
-
-    switch( index )
-    {
-        case 0:
-            if( value & Rc0PixelClock )
-            {
-                rcnts[index].rate = 5;
-            }
-            else
-            {
-                rcnts[index].rate = 1;
-            }
-        break;
-        case 1:
-            if( value & Rc1HSyncClock )
-            {
-                rcnts[index].rate = (PSXCLK / (FrameRate[Config.PsxType] * HSyncTotal[Config.PsxType]));
-            }
-            else
-            {
-                rcnts[index].rate = 1;
-            }
-        break;
-        case 2:
-            if( value & Rc2OneEighthClock )
-            {
-                rcnts[index].rate = 8;
-            }
-            else
-            {
-                rcnts[index].rate = 1;
-            }
-
-            // TODO: wcount must work.
-            if( value & Rc2Disable )
-            {
-                rcnts[index].rate = 0xffffffff;
-            }
-        break;
-    }
-
-    _psxRcntWcount( index, 0 );
     psxRcntSet();
 }
 
@@ -377,8 +414,6 @@ void psxRcntWtarget( u32 index, u32 value )
 {
     verboseLog( 1, "[RCNT %i] wtarget: %x\n", index, value );
 
-    psxRcntUpdate();
-
     rcnts[index].target = value;
 
     _psxRcntWcount( index, _psxRcntRcount( index ) );
@@ -391,8 +426,6 @@ u32 psxRcntRcount( u32 index )
 {
     u32 count;
 
-    psxRcntUpdate();
-
     count = _psxRcntRcount( index );
 
     // Parasite Eve 2 fix.
@@ -416,8 +449,6 @@ u32 psxRcntRmode( u32 index )
 {
     u16 mode;
 
-    psxRcntUpdate();
-
     mode = rcnts[index].mode;
     rcnts[index].mode &= 0xe7ff;
 
@@ -463,6 +494,7 @@ void psxRcntInit()
 
     hSyncCount = 0;
     spuSyncCount = 0;
+    hsync_steps = 1;
 
     psxRcntSet();
 }
@@ -471,12 +503,30 @@ void psxRcntInit()
 
 s32 psxRcntFreeze( gzFile f, s32 Mode )
 {
+    u32 count;
+    s32 i;
+
     gzfreeze( &rcnts, sizeof(rcnts) );
     gzfreeze( &hSyncCount, sizeof(hSyncCount) );
     gzfreeze( &spuSyncCount, sizeof(spuSyncCount) );
     gzfreeze( &psxNextCounter, sizeof(psxNextCounter) );
     gzfreeze( &psxNextsCounter, sizeof(psxNextsCounter) );
 
+    if (Mode == 0)
+    {
+        // don't trust things from a savestate
+        for( i = 0; i < CounterQuantity; ++i )
+        {
+            _psxRcntWmode( i, rcnts[i].mode );
+            count = (psxRegs.cycle - rcnts[i].cycleStart) / rcnts[i].rate;
+            _psxRcntWcount( i, count );
+        }
+        hsync_steps = (psxRegs.cycle - rcnts[3].cycleStart) / rcnts[3].target;
+        psxRcntSet();
+
+        base_cycle = 0;
+    }
+
     return 0;
 }