some work on PSP CLUT

[picodrive.git] / Pico / Draw2.c

diff --git a/Pico/Draw2.c b/Pico/Draw2.c
index 9fc413b..3a511b2 100644 (file)
--- a/Pico/Draw2.c
+++ b/Pico/Draw2.c
@@ -20,6 +20,12 @@
 \r
 #define USE_CACHE\r
 \r
+// note: this is not implemented in ARM asm\r
+#if defined(DRAW2_OVERRIDE_LINE_WIDTH)\r
+#define LINE_WIDTH DRAW2_OVERRIDE_LINE_WIDTH\r
+#else\r
+#define LINE_WIDTH 328\r
+#endif\r
 \r
 int currpri = 0;\r
 \r
@@ -45,7 +51,7 @@ static int TileXnormYnorm(unsigned char *pd,int addr,unsigned char pal)
        unsigned int pack=0; unsigned int t=0, blank = 1;\r
        int i;\r
 \r
-       for(i=8; i; i--, addr+=2, pd += 320+8) {\r
+       for(i=8; i; i--, addr+=2, pd += LINE_WIDTH) {\r
                pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
                if(!pack) continue;\r
 \r
@@ -68,7 +74,7 @@ static int TileXflipYnorm(unsigned char *pd,int addr,unsigned char pal)
        unsigned int pack=0; unsigned int t=0, blank = 1;\r
        int i;\r
 \r
-       for(i=8; i; i--, addr+=2, pd += 320+8) {\r
+       for(i=8; i; i--, addr+=2, pd += LINE_WIDTH) {\r
                pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
                if(!pack) continue;\r
 \r
@@ -91,7 +97,7 @@ static int TileXnormYflip(unsigned char *pd,int addr,unsigned char pal)
        int i;\r
 \r
        addr+=14;\r
-       for(i=8; i; i--, addr-=2, pd += 320+8) {\r
+       for(i=8; i; i--, addr-=2, pd += LINE_WIDTH) {\r
                pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
                if(!pack) continue;\r
 \r
@@ -115,7 +121,7 @@ static int TileXflipYflip(unsigned char *pd,int addr,unsigned char pal)
        int i;\r
 \r
        addr+=14;\r
-       for(i=8; i; i--, addr-=2, pd += 320+8) {\r
+       for(i=8; i; i--, addr-=2, pd += LINE_WIDTH) {\r
                pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
                if(!pack) continue;\r
 \r
@@ -164,8 +170,8 @@ static void DrawWindowFull(int start, int end, int prio)
        code=Pico.vram[nametab+tile_start];\r
        if ((code>>15) != prio) return; // hack: just assume that whole window uses same priority\r
 \r
-       scrpos+=8*328+8;\r
-       scrpos+=8*328*(start-START_ROW);\r
+       scrpos+=8*LINE_WIDTH+8;\r
+       scrpos+=8*LINE_WIDTH*(start-START_ROW);\r
 \r
        // do a window until we reach planestart row\r
        for(trow = start; trow < end; trow++, nametab+=nametab_step) { // current tile row\r
@@ -193,7 +199,7 @@ static void DrawWindowFull(int start, int end, int prio)
                        if(zero) blank=code; // We know this tile is blank now\r
                }\r
 \r
-               scrpos += 328*8;\r
+               scrpos += LINE_WIDTH*8;\r
        }\r
 }\r
 \r
@@ -239,11 +245,11 @@ static void DrawLayerFull(int plane, int *hcache, int planestart, int planeend)
        else          nametab=(pvid->reg[4]&0x07)<<12; // B\r
 \r
        scrpos = PicoDraw2FB;\r
-       scrpos+=8*328*(planestart-START_ROW);\r
+       scrpos+=8*LINE_WIDTH*(planestart-START_ROW);\r
 \r
        // Get vertical scroll value:\r
        vscroll=Pico.vsram[plane]&0x1ff;\r
-       scrpos+=(8-(vscroll&7))*328;\r
+       scrpos+=(8-(vscroll&7))*LINE_WIDTH;\r
        if(vscroll&7) planeend++; // we have vertically clipped tiles due to vscroll, so we need 1 more row\r
 \r
        *hcache++ = 8-(vscroll&7); // push y-offset to tilecache\r
@@ -302,7 +308,7 @@ static void DrawLayerFull(int plane, int *hcache, int planestart, int planeend)
                        if(zero) blank=code; // We know this tile is blank now\r
                }\r
 \r
-               scrpos += 328*8;\r
+               scrpos += LINE_WIDTH*8;\r
        }\r
 \r
        *hcache = 0; // terminate cache\r
@@ -319,7 +325,7 @@ static void DrawTilesFromCacheF(int *hc)
        unsigned char *scrpos = PicoDraw2FB, *pd = 0;\r
 \r
        // *hcache++ = code|(dx<<16)|(trow<<27); // cache it\r
-       scrpos+=(*hc++)*328 - START_ROW*328*8;\r
+       scrpos+=(*hc++)*LINE_WIDTH - START_ROW*LINE_WIDTH*8;\r
 \r
        while((code=*hc++)) {\r
                if((short)code == blank) continue;\r
@@ -327,7 +333,7 @@ static void DrawTilesFromCacheF(int *hc)
                // y pos\r
                if(((unsigned)code>>27) != prevy) {\r
                        prevy = (unsigned)code>>27;\r
-                       pd = scrpos + prevy*328*8;\r
+                       pd = scrpos + prevy*LINE_WIDTH*8;\r
                }\r
 \r
                // Get tile address/2:\r
@@ -380,7 +386,7 @@ static void DrawSpriteFull(unsigned int *sprite)
        while(sy <= START_ROW*8) { sy+=8; tile+=tdeltay; height--; }\r
 \r
        scrpos = PicoDraw2FB;\r
-       scrpos+=(sy-START_ROW*8)*328;\r
+       scrpos+=(sy-START_ROW*8)*LINE_WIDTH;\r
 \r
        for (; height > 0; height--, sy+=8, tile+=tdeltay)\r
        {\r
@@ -402,7 +408,7 @@ static void DrawSpriteFull(unsigned int *sprite)
                        }\r
                }\r
 \r
-               scrpos+=8*328;\r
+               scrpos+=8*LINE_WIDTH;\r
        }\r
 }\r
 #endif\r
@@ -488,7 +494,7 @@ static void BackFillFull(int reg7)
        back|=back<<8;\r
        back|=back<<16;\r
 \r
-       for(i = (8+320)*(8+(END_ROW-START_ROW)*8)/16; i; i--) {\r
+       for(i = LINE_WIDTH*(8+(END_ROW-START_ROW)*8)/16; i; i--) {\r
                *p++ = back; // do 16 pixels per iteration\r
                *p++ = back;\r
                *p++ = back;\r