X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fdraw.c;h=ca9a140b00e24375a8cd4f9f2b7ecc26913ea93c;hb=bc38f4d24fcdbbefbda10ef023c0ffbab4b208b8;hp=712e86100878ae0fa63500fc377e93ebadcb7a7d;hpb=205bc4565ca1db7e2983f8fae2daa28a9a20d3cf;p=picodrive.git

diff --git a/pico/draw.c b/pico/draw.c
index 712e861..ca9a140 100644
--- a/pico/draw.c
+++ b/pico/draw.c
@@ -1,11 +1,11 @@
-// This is part of Pico Library
-
-// (c) Copyright 2004 Dave, All rights reserved.
-// (c) Copyright 2006-2008 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
-
+/*
+ * line renderer
+ * (c) Copyright Dave, 2004
+ * (C) notaz, 2006-2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 /*
  * The renderer has 4 modes now:
  * - normal
@@ -19,7 +19,7 @@
  *
  * since renderer always draws line in 8bit mode, there are 2 spare bits:
  * b \ mode: s/h             as        sonic
- * 00        normal          -         -
+ * 00        normal          -         pal index
  * 01        shadow          -         pal index
  * 10        hilight+op spr  spr       pal index
  * 11        shadow +op spr  -         pal index
@@ -34,14 +34,15 @@
 int (*PicoScanBegin)(unsigned int num) = NULL;
 int (*PicoScanEnd)  (unsigned int num) = NULL;
 
-#if OVERRIDE_HIGHCOL
 static unsigned char DefHighCol[8+320+8];
-unsigned char *HighCol=DefHighCol;
-#else
-unsigned char  HighCol[8+320+8];
-#endif
+unsigned char *HighCol = DefHighCol;
+static unsigned char *HighColBase = DefHighCol;
+static int HighColIncrement;
+
 static unsigned int DefOutBuff[320*2/2];
-void *DrawLineDest=DefOutBuff; // pointer to dest buffer where to draw this line to
+void *DrawLineDest = DefOutBuff; // pointer to dest buffer where to draw this line to
+void *DrawLineDestBase = DefOutBuff;
+int DrawLineDestIncrement;
 
 static int  HighCacheA[41+1];   // caches for high layers
 static int  HighCacheB[41+1];
@@ -1161,77 +1162,42 @@ unsigned short HighPal[0x100];
 void PicoDoHighPal555(int sh)
 {
   unsigned int *spal, *dpal;
-  unsigned short *pal=HighPal;
-  int i, t;
+  unsigned int t, i;
 
   Pico.m.dirtyPal = 0;
 
   spal = (void *)Pico.cram;
   dpal = (void *)HighPal;
 
-  for (i = 0; i < 0x40; i++) {
-    unsigned int t = spal[i];
+  for (i = 0; i < 0x40 / 2; i++) {
+    t = spal[i];
 #ifdef USE_BGR555
     t = ((t & 0x000e000e)<< 1) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)<<4);
 #else
     t = ((t & 0x000e000e)<<12) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)>>7);
 #endif
-    t |= (t >> 3) & 0x18e318e3;
+    // treat it like it was 4-bit per channel, since in s/h mode it somewhat is that.
+    // otherwise intensity difference between this and s/h will be wrong
+    t |= (t >> 4) & 0x08610861; // 0x18e318e3
     dpal[i] = t;
   }
 
+  // norm: xxx0, sh: 0xxx, hi: 0xxx + 7
   if (sh)
   {
     // shadowed pixels
-    for (i = 0x3f; i >= 0; i--)
-      pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x738e);
+    for (i = 0; i < 0x40 / 2; i++)
+      dpal[0x40/2 | i] = dpal[0xc0/2 | i] = (dpal[i] >> 1) & 0x738e738e;
     // hilighted pixels
-    for (i = 0x3f; i >= 0; i--) {
-      t=pal[i]&0xe71c;t+=0x4208;if(t&0x20)t|=0x1c;if(t&0x800)t|=0x700;if(t&0x10000)t|=0xe000;t&=0xe71c;
-      pal[0x80|i]=(unsigned short)t;
-    }
-  }
-}
-
-static void FinalizeLineBGR444(int sh, int line)
-{
-  unsigned short *pd=DrawLineDest;
-  unsigned char  *ps=HighCol+8;
-  unsigned short *pal=Pico.cram;
-  int len, i, t, mask=0xff;
-
-  if (Pico.video.reg[12]&1) {
-    len = 320;
-  } else {
-    if(!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
-    len = 256;
-  }
-
-  if(sh) {
-    pal=HighPal;
-    if(Pico.m.dirtyPal) {
-      blockcpy(pal, Pico.cram, 0x40*2);
-      // shadowed pixels
-      for(i = 0x3f; i >= 0; i--)
-        pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x0777);
-      // hilighted pixels
-      for(i = 0x3f; i >= 0; i--) {
-        t=pal[i]&0xeee;t+=0x444;if(t&0x10)t|=0xe;if(t&0x100)t|=0xe0;if(t&0x1000)t|=0xe00;t&=0xeee;
-        pal[0x80|i]=(unsigned short)t;
-      }
-      Pico.m.dirtyPal = 0;
+    for (i = 0; i < 0x40 / 2; i++) {
+      t = ((dpal[i] >> 1) & 0x738e738e) + 0x738e738e; // 0x7bef7bef;
+      t |= (t >> 4) & 0x08610861;
+      dpal[0x80/2 | i] = t;
     }
   }
-
-  if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))
-    mask=0x3f; // accurate sprites
-
-  for(i = 0; i < len; i++)
-    pd[i] = pal[ps[i] & mask];
 }
 
-
-void FinalizeLineRGB555(int sh, int line)
+void FinalizeLine555(int sh, int line)
 {
   unsigned short *pd=DrawLineDest;
   unsigned char  *ps=HighCol+8;
@@ -1405,7 +1371,7 @@ static int DrawDisplay(int sh)
 // MUST be called every frame
 PICO_INTERNAL void PicoFrameStart(void)
 {
-  int lines = 224;
+  int offs = 8, lines = 224;
 
   // prepare to do this frame
   rendstatus = 0;
@@ -1413,19 +1379,24 @@ PICO_INTERNAL void PicoFrameStart(void)
     rendstatus |= PDRAW_INTERLACE; // interlace mode
   if (!(Pico.video.reg[12] & 1))
     rendstatus |= PDRAW_32_COLS;
-  if (Pico.video.reg[1] & 8)
+  if (Pico.video.reg[1] & 8) {
+    offs = 0;
     lines = 240;
-
-  DrawScanline = 0;
-  skip_next_line = 0;
+  }
 
   if (rendstatus != rendstatus_old || lines != rendlines) {
     rendlines = lines;
-    rendstatus_old = rendstatus;
+    // mode_change() might reset rendstatus_old by calling SetColorFormat
     emu_video_mode_change((lines == 240) ? 0 : 8,
       lines, (Pico.video.reg[12] & 1) ? 0 : 1);
+    rendstatus_old = rendstatus;
   }
 
+  HighCol = HighColBase + offs * HighColIncrement;
+  DrawLineDest = (char *)DrawLineDestBase + offs * DrawLineDestIncrement;
+  DrawScanline = 0;
+  skip_next_line = 0;
+
   if (PicoOpt & POPT_ALT_RENDERER)
     return;
 
@@ -1446,6 +1417,9 @@ static void DrawBlankedLine(int line, int offs, int sh, int bgc)
 
   if (PicoScanEnd != NULL)
     PicoScanEnd(line + offs);
+
+  HighCol += HighColIncrement;
+  DrawLineDest = (char *)DrawLineDest + DrawLineDestIncrement;
 }
 
 static void PicoLine(int line, int offs, int sh, int bgc)
@@ -1476,6 +1450,9 @@ static void PicoLine(int line, int offs, int sh, int bgc)
 
   if (PicoScanEnd != NULL)
     skip_next_line = PicoScanEnd(line + offs);
+
+  HighCol += HighColIncrement;
+  DrawLineDest = (char *)DrawLineDest + DrawLineDestIncrement;
 }
 
 void PicoDrawSync(int to, int blank_last_line)
@@ -1484,28 +1461,16 @@ void PicoDrawSync(int to, int blank_last_line)
   int sh = (Pico.video.reg[0xC] & 8) >> 3; // shadow/hilight?
   int bgc = Pico.video.reg[7];
 
+  pprof_start(draw);
+
   if (rendlines != 240)
     offs = 8;
 
-  // need to know which pixels are bg for 32x
-  if (PicoAHW & PAHW_32X)
-    bgc = 0;
-
   for (line = DrawScanline; line < to; line++)
   {
-#if !CAN_HANDLE_240_LINES
-    if (line >= 224) break;
-#endif
     PicoLine(line, offs, sh, bgc);
   }
 
-#if !CAN_HANDLE_240_LINES
-  if (line >= 224) {
-    DrawScanline = 240;
-    return;
-  }
-#endif
-
   // last line
   if (line <= to)
   {
@@ -1515,22 +1480,83 @@ void PicoDrawSync(int to, int blank_last_line)
     line++;
   }
   DrawScanline = line;
+
+  pprof_end(draw);
 }
 
-void PicoDrawSetColorFormat(int which)
+// also works for fast renderer
+void PicoDrawUpdateHighPal(void)
+{
+  int sh = (Pico.video.reg[0xC] & 8) >> 3; // shadow/hilight?
+  if (PicoOpt & POPT_ALT_RENDERER)
+    sh = 0; // no s/h support
+
+  PicoDoHighPal555(sh);
+  if (rendstatus & PDRAW_SONIC_MODE) {
+    // FIXME?
+    memcpy(HighPal + 0x40, HighPal, 0x40*2);
+    memcpy(HighPal + 0x80, HighPal, 0x40*2);
+  }
+}
+
+void PicoDrawSetOutFormat(pdso_t which, int use_32x_line_mode)
 {
   switch (which)
   {
-    case 2: FinalizeLine = FinalizeLine8bit;   break;
-    case 1: FinalizeLine = (PicoAHW & PAHW_32X) ? FinalizeLine32xRGB555 : FinalizeLineRGB555; break;
-    case 0: FinalizeLine = FinalizeLineBGR444; break;
-    default:FinalizeLine = NULL; break;
+    case PDF_8BIT:
+      FinalizeLine = FinalizeLine8bit;
+      break;
+
+    case PDF_RGB555:
+      if ((PicoAHW & PAHW_32X) && use_32x_line_mode)
+        FinalizeLine = FinalizeLine32xRGB555;
+      else
+        FinalizeLine = FinalizeLine555;
+      break;
+
+    default:
+      FinalizeLine = NULL;
+      break;
   }
-  PicoDrawSetColorFormatMode4(which);
+  PicoDrawSetOutFormat32x(which, use_32x_line_mode);
+  PicoDrawSetOutputMode4(which);
   rendstatus_old = -1;
-#if OVERRIDE_HIGHCOL
-  if (which)
-    HighCol=DefHighCol;
-#endif
 }
 
+// note: may be called on the middle of frame
+void PicoDrawSetOutBuf(void *dest, int increment)
+{
+  DrawLineDestBase = dest;
+  DrawLineDestIncrement = increment;
+  DrawLineDest = DrawLineDestBase + DrawScanline * increment;
+}
+
+void PicoDrawSetInternalBuf(void *dest, int increment)
+{
+  if (dest != NULL) {
+    HighColBase = dest;
+    HighColIncrement = increment;
+    HighCol = HighColBase + DrawScanline * increment;
+  }
+  else {
+    HighColBase = DefHighCol;
+    HighColIncrement = 0;
+  }
+}
+
+void PicoDrawSetCallbacks(int (*begin)(unsigned int num), int (*end)(unsigned int num))
+{
+  PicoScanBegin = NULL;
+  PicoScanEnd = NULL;
+  PicoScan32xBegin = NULL;
+  PicoScan32xEnd = NULL;
+
+  if ((PicoAHW & PAHW_32X) && FinalizeLine != FinalizeLine32xRGB555) {
+    PicoScan32xBegin = begin;
+    PicoScan32xEnd = end;
+  }
+  else {
+    PicoScanBegin = begin;
+    PicoScanEnd = end;
+  }
+}