eliminate texrels (wip)

[picodrive.git] / pico / mode4.c

diff --git a/pico/mode4.c b/pico/mode4.c
index 3beb709..c945f6f 100644 (file)
--- a/pico/mode4.c
+++ b/pico/mode4.c
@@ -1,3 +1,10 @@
+/*
+ * mode4/SMS renderer
+ * (C) notaz, 2009-2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 /*
  * TODO:
  * - TMS9918 modes?
@@ -8,7 +15,7 @@
  */
 #include "pico_int.h"
 
-static void (*FinalizeLineM4)(void);
+static void (*FinalizeLineM4)(int line);
 static int skip_next_line;
 static int screen_offset;
 
@@ -193,11 +200,10 @@ void PicoFrameStartMode4(void)
   int lines = 192;
   skip_next_line = 0;
   screen_offset = 24;
-  rendstatus = 0;
+  Pico.est.rendstatus = PDRAW_32_COLS;
 
   if ((Pico.video.reg[0] & 6) == 6 && (Pico.video.reg[1] & 0x18)) {
     if (Pico.video.reg[1] & 0x08) {
-      rendstatus |= PDRAW_240LINES;
       screen_offset = 0;
       lines = 240;
     }
@@ -207,10 +213,13 @@ void PicoFrameStartMode4(void)
     }
   }
 
-  if (rendstatus != rendstatus_old) {
-    rendstatus_old = rendstatus;
+  if (Pico.est.rendstatus != rendstatus_old || lines != rendlines) {
     emu_video_mode_change(screen_offset, lines, 1);
+    rendstatus_old = Pico.est.rendstatus;
+    rendlines = lines;
   }
+
+  DrawLineDest = (char *)DrawLineDestBase + screen_offset * DrawLineDestIncrement;
 }
 
 void PicoLineMode4(int line)
@@ -229,10 +238,12 @@ void PicoLineMode4(int line)
     DrawDisplayM4(line);
 
   if (FinalizeLineM4 != NULL)
-    FinalizeLineM4();
+    FinalizeLineM4(line);
 
   if (PicoScanEnd != NULL)
     skip_next_line = PicoScanEnd(line + screen_offset);
+
+  DrawLineDest = (char *)DrawLineDest + DrawLineDestIncrement;
 }
 
 void PicoDoHighPal555M4(void)
@@ -256,19 +267,20 @@ void PicoDoHighPal555M4(void)
     t |= (t >> 4) & 0x08610861;
     *dpal = t;
   }
+  HighPal[0xe0] = 0;
 }
 
-static void FinalizeLineRGB555M4(void)
+static void FinalizeLineRGB555M4(int line)
 {
   if (Pico.m.dirtyPal)
     PicoDoHighPal555M4();
 
   // standard FinalizeLine can finish it for us,
   // with features like scaling and such
-  FinalizeLineRGB555(0);
+  FinalizeLine555(0, line, &Pico.est);
 }
 
-static void FinalizeLine8bitM4(void)
+static void FinalizeLine8bitM4(int line)
 {
   unsigned char *pd = DrawLineDest;
 
@@ -278,13 +290,13 @@ static void FinalizeLine8bitM4(void)
   memcpy32((int *)pd, (int *)(HighCol+8), 256/4);
 }
 
-void PicoDrawSetColorFormatMode4(int which)
+void PicoDrawSetOutputMode4(pdso_t which)
 {
   switch (which)
   {
-    case 2: FinalizeLineM4 = FinalizeLine8bitM4; break;
-    case 1: FinalizeLineM4 = FinalizeLineRGB555M4; break;
-    default:FinalizeLineM4 = NULL; break;
+    case PDF_8BIT:   FinalizeLineM4 = FinalizeLine8bitM4; break;
+    case PDF_RGB555: FinalizeLineM4 = FinalizeLineRGB555M4; break;
+    default:         FinalizeLineM4 = NULL; break;
   }
 }