From: kub <derkub@gmail.com>
Date: Tue, 7 Apr 2020 18:47:38 +0000 (+0200)
Subject: vdp rendering, sprite caching optimization
X-Git-Tag: v2.00~755
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b061bc166c023265a484e243eeff58735eab8bbb;p=picodrive.git

vdp rendering, sprite caching optimization
---

diff --git a/pico/draw.c b/pico/draw.c
index 68af73e2..82bb3462 100644
--- a/pico/draw.c
+++ b/pico/draw.c
@@ -1601,7 +1601,6 @@ static int DrawDisplay(int sh)
   int win=0, edge=0, hvwind=0, lflags;
   int maxw, maxcells;
 
-  est->rendstatus &= ~(PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES);
   est->rendstatus &= ~(PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO);
 
   if (pvid->reg[12]&1) {
@@ -1713,6 +1712,7 @@ PICO_INTERNAL void PicoFrameStart(void)
 {
   int offs = 8, lines = 224;
   int dirty = ((Pico.est.rendstatus & PDRAW_SONIC_MODE) || Pico.m.dirtyPal);
+  int sprep = Pico.est.rendstatus & (PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES);
 
   // prepare to do this frame
   Pico.est.rendstatus = 0;
@@ -1732,6 +1732,8 @@ PICO_INTERNAL void PicoFrameStart(void)
       lines, (Pico.video.reg[12] & 1) ? 0 : 1);
     rendstatus_old = Pico.est.rendstatus;
   }
+  if (sprep)
+    Pico.est.rendstatus |= PDRAW_PARSE_SPRITES;
 
   Pico.est.HighCol = HighColBase + offs * HighColIncrement;
   Pico.est.DrawLineDest = (char *)DrawLineDestBase + offs * DrawLineDestIncrement;
@@ -1804,6 +1806,7 @@ static void PicoLine(int line, int offs, int sh, int bgc)
 
 void PicoDrawSync(int to, int blank_last_line)
 {
+  struct PicoEState *est = &Pico.est;
   int line, offs = 0;
   int sh = (Pico.video.reg[0xC] & 8) >> 3; // shadow/hilight?
   int bgc = Pico.video.reg[7];
@@ -1815,10 +1818,11 @@ void PicoDrawSync(int to, int blank_last_line)
     if (to > 223)
       to = 223;
   }
-  if (Pico.est.DrawScanline <= to - blank_last_line)
+  if (est->DrawScanline <= to - blank_last_line && (est->rendstatus &
+                (PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES|PDRAW_PARSE_SPRITES)))
     PrepareSprites(to - blank_last_line + 1);
 
-  for (line = Pico.est.DrawScanline; line < to; line++)
+  for (line = est->DrawScanline; line < to; line++)
     PicoLine(line, offs, sh, bgc);
 
   // last line
@@ -1829,7 +1833,7 @@ void PicoDrawSync(int to, int blank_last_line)
     else PicoLine(line, offs, sh, bgc);
     line++;
   }
-  Pico.est.DrawScanline = line;
+  est->DrawScanline = line;
 
   pprof_end(draw);
 }
diff --git a/pico/draw_arm.S b/pico/draw_arm.S
index 2ae6dba6..9b5a4e32 100644
--- a/pico/draw_arm.S
+++ b/pico/draw_arm.S
@@ -14,7 +14,7 @@
 
 .equ PDRAW_SPRITES_MOVED, (1<<0)
 .equ PDRAW_WND_DIFF_PRIO, (1<<1)
-.equ PDRAW_ACC_SPRITES,   (1<<2)
+.equ PDRAW_PARSE_SPRITES, (1<<2)
 .equ PDRAW_DIRTY_SPRITES, (1<<4)
 .equ PDRAW_PLANE_HI_PRIO, (1<<6)
 .equ PDRAW_SHHI_DONE,     (1<<7)
diff --git a/pico/pico.h b/pico/pico.h
index 1a60ce34..efc30e5f 100644
--- a/pico/pico.h
+++ b/pico/pico.h
@@ -196,10 +196,11 @@ void vidConvCpyRGB565(void *to, void *from, int pixels);
 #endif
 void PicoDoHighPal555(int sh, int line, struct PicoEState *est);
 // internals
-#define PDRAW_SPRITES_MOVED (1<<0) // (asm)
+#define PDRAW_SPRITES_MOVED (1<<0) // SAT address modified
 #define PDRAW_WND_DIFF_PRIO (1<<1) // not all window tiles use same priority
+#define PDRAW_PARSE_SPRITES (1<<2) // SAT needs parsing
 #define PDRAW_INTERLACE     (1<<3)
-#define PDRAW_DIRTY_SPRITES (1<<4) // (asm)
+#define PDRAW_DIRTY_SPRITES (1<<4) // SAT modified
 #define PDRAW_SONIC_MODE    (1<<5) // mid-frame palette changes for 8bit renderer
 #define PDRAW_PLANE_HI_PRIO (1<<6) // have layer with all hi prio tiles (mk3)
 #define PDRAW_SHHI_DONE     (1<<7) // layer sh/hi already processed