X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2FDraw.c;h=989d9bdb27b8d5f27715fd9d021c727a324b6e17;hb=d4ca252d929395352f581b532e9d3726da31d718;hp=1c562f6b45307e51d9e0948251da2d73bb2d3e25;hpb=70357ce52578dee0dd3b3663902cf872c3d34258;p=picodrive.git

diff --git a/Pico/Draw.c b/Pico/Draw.c
index 1c562f6..989d9bd 100644
--- a/Pico/Draw.c
+++ b/Pico/Draw.c
@@ -66,6 +66,10 @@ void blockcpy_or(void *dst, void *src, size_t n, int pat)
 #endif
 
 
+#ifdef _ASM_DRAW_C_AMIPS
+int TileNorm(int sx,int addr,int pal);
+int TileFlip(int sx,int addr,int pal);
+#else
 static int TileNorm(int sx,int addr,int pal)
 {
   unsigned char *pd = HighCol+sx;
@@ -108,7 +112,7 @@ static int TileFlip(int sx,int addr,int pal)
   }
   return 1; // Tile blank
 }
-
+#endif
 
 // tile renderers for hacky operator sprite support
 #define sh_pix(x) \
@@ -531,22 +535,49 @@ static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
   }
 
   // Draw tiles across screen:
-  for (; tilex < tend; tilex++)
+  if (!sh)
   {
-    int addr=0,zero=0;
-    int pal;
+    for (; tilex < tend; tilex++)
+    {
+      int addr=0,zero=0;
+      int pal;
+
+      code=Pico.vram[nametab+tilex];
+      if(code==blank) continue;
+      if((code>>15) != prio) {
+        rendstatus|=2;
+        continue;
+      }
 
-    code=Pico.vram[nametab+tilex];
-    if(code==blank) continue;
-    if((code>>15) != prio) {
-      rendstatus|=2;
-      continue;
+      pal=((code>>9)&0x30);
+
+      // Get tile address/2:
+      addr=(code&0x7ff)<<4;
+      if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
+
+      if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
+      else             zero=TileNorm(8+(tilex<<3),addr,pal);
+
+      if (zero) blank=code; // We know this tile is blank now
     }
+  }
+  else
+  {
+    for (; tilex < tend; tilex++)
+    {
+      int addr=0,zero=0;
+      int pal, tmp, *zb;
+
+      code=Pico.vram[nametab+tilex];
+      if(code==blank) continue;
+      if((code>>15) != prio) {
+        rendstatus|=2;
+        continue;
+      }
 
-    pal=((code>>9)&0x30);
+      pal=((code>>9)&0x30);
 
-    if(sh) {
-      int tmp, *zb = (int *)(HighCol+8+(tilex<<3));
+      zb = (int *)(HighCol+8+(tilex<<3));
       if(prio) {
         tmp = *zb;
         if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;
@@ -558,24 +589,43 @@ static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
       } else {
         pal |= 0x40;
       }
-    }
 
-    // Get tile address/2:
-    addr=(code&0x7ff)<<4;
-    if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
+      // Get tile address/2:
+      addr=(code&0x7ff)<<4;
+      if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
 
-    if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
-    else             zero=TileNorm(8+(tilex<<3),addr,pal);
+      if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
+      else             zero=TileNorm(8+(tilex<<3),addr,pal);
 
-    if (zero) blank=code; // We know this tile is blank now
+      if (zero) blank=code; // We know this tile is blank now
+    }
   }
-
-  // terminate the cache list
-  //*hcache = 0;
 }
 
 // --------------------------------------------
 
+static void DrawTilesFromCacheShPrep(void)
+{
+  if (!(rendstatus&0x80))
+  {
+    // as some layer has covered whole line with hi priority tiles,
+    // we can process whole line and then act as if sh/hi mode was off.
+    rendstatus|=0x80;
+    int c = 320/4, *zb = (int *)(HighCol+8);
+    while (c--)
+    {
+      int tmp = *zb;
+      if (!(tmp & 0x80808080)) *zb=tmp&0x3f3f3f3f;
+      else {
+        if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;
+        if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;
+        *zb=tmp;
+      }
+      zb++;
+    }
+  }
+}
+
 static void DrawTilesFromCache(int *hc, int sh, int rlim)
 {
   int code, addr, dx;
@@ -585,66 +635,49 @@ static void DrawTilesFromCache(int *hc, int sh, int rlim)
 
   if (sh && (rendstatus&0xc0))
   {
-    if (!(rendstatus&0x80))
-    {
-      // as some layer has covered whole line with hi priority tiles,
-      // we can process whole line and then act as if sh/hi mode was off.
-      rendstatus|=0x80;
-      int c = 320/4, *zb = (int *)(HighCol+8);
-      while (c--)
-      {
-        int tmp = *zb;
-        if (!(tmp & 0x80808080)) *zb=tmp&0x3f3f3f3f;
-        else {
-          if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;
-          if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;
-          *zb=tmp;
-        }
-        zb++;
-      }
-    }
+    DrawTilesFromCacheShPrep();
     sh = 0;
   }
 
-  if (sh)
+  if (!sh)
   {
+    short blank=-1; // The tile we know is blank
     while ((code=*hc++)) {
-      unsigned char *zb;
+      int zero;
+      if((short)code == blank) continue;
       // Get tile address/2:
       addr=(code&0x7ff)<<4;
       addr+=(unsigned int)code>>25; // y offset into tile
       dx=(code>>16)&0x1ff;
-      zb = HighCol+dx;
-      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
-      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
-      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
-      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
 
       pal=((code>>9)&0x30);
       if (rlim-dx < 0) goto last_cut_tile;
 
-      if (code&0x0800) TileFlip(dx,addr,pal);
-      else             TileNorm(dx,addr,pal);
+      if (code&0x0800) zero=TileFlip(dx,addr,pal);
+      else             zero=TileNorm(dx,addr,pal);
+
+      if (zero) blank=(short)code;
     }
   }
   else
   {
-    short blank=-1; // The tile we know is blank
     while ((code=*hc++)) {
-      int zero;
-      if((short)code == blank) continue;
+      unsigned char *zb;
       // Get tile address/2:
       addr=(code&0x7ff)<<4;
       addr+=(unsigned int)code>>25; // y offset into tile
       dx=(code>>16)&0x1ff;
+      zb = HighCol+dx;
+      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
+      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
+      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
+      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
 
       pal=((code>>9)&0x30);
       if (rlim-dx < 0) goto last_cut_tile;
 
-      if (code&0x0800) zero=TileFlip(dx,addr,pal);
-      else             zero=TileNorm(dx,addr,pal);
-
-      if (zero) blank=(short)code;
+      if (code&0x0800) TileFlip(dx,addr,pal);
+      else             TileNorm(dx,addr,pal);
     }
   }
   return;
@@ -1123,8 +1156,7 @@ static void DrawAllSprites(int *hcache, int maxwidth, int prio, int sh)
 #ifndef _ASM_DRAW_C
 static void BackFill(int reg7, int sh)
 {
-  unsigned int back=0;
-  unsigned int *pd=NULL,*end=NULL;
+  unsigned int back;
 
   // Start with a blank scanline (background colour):
   back=reg7&0x3f;
@@ -1132,10 +1164,7 @@ static void BackFill(int reg7, int sh)
   back|=back<<8;
   back|=back<<16;
 
-  pd= (unsigned int *)(HighCol+8);
-  end=(unsigned int *)(HighCol+8+320);
-
-  do { pd[0]=pd[1]=pd[2]=pd[3]=back; pd+=4; } while (pd<end);
+  memset32((int *)(HighCol+8), back, 320/4);
 }
 #endif