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vdp, optimisation for 8bit renderers

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This commit is contained in:
kub 2020-08-04 22:24:56 +02:00
parent 1f49b75032
commit 352479001c
4 changed files with 18 additions and 13 deletions
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18
pico/mode4.c
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@ -17,7 +17,7 @@
static void (*FinalizeLineM4)(int line);
static int skip_next_line;
static int screen_offset;
static int screen_offset, line_offset;
static void TileBGM4(int sx, int pal)
{
@ -110,8 +110,7 @@ static void draw_sprites(int scanline)
if (pv->reg[0] & 8)
xoff = 0;
if (!FinalizeLineM4 && !(PicoIn.opt & POPT_DIS_32C_BORDER))
xoff += 32;
xoff += line_offset;
sat = (unsigned char *)PicoMem.vram + ((pv->reg[5] & 0x7e) << 7);
if (pv->reg[1] & 2) {
@ -252,8 +251,7 @@ static void DrawDisplayM4(int scanline)
if (dx != 8)
cells++; // have hscroll, need to draw 1 cell more
dx += cellskip << 3;
if (!FinalizeLineM4 && !(PicoIn.opt & POPT_DIS_32C_BORDER))
dx += 32;
dx += line_offset;
// low priority tiles
if (!(pv->debug_p & PVD_KILL_B))
@ -365,18 +363,18 @@ static void FinalizeLine8bitM4(int line)
{
unsigned char *pd = Pico.est.DrawLineDest;
if (!(PicoIn.opt & POPT_DIS_32C_BORDER))
pd += 32;
memcpy(pd, Pico.est.HighCol + 8, 256);
if (HighColBase != DrawLineDestBase)
memcpy(pd + line_offset, Pico.est.HighCol + line_offset + 8, 256);
}
void PicoDrawSetOutputMode4(pdso_t which)
{
line_offset = PicoIn.opt & POPT_DIS_32C_BORDER ? 0 : 32;
switch (which)
{
case PDF_8BIT: FinalizeLineM4 = FinalizeLine8bitM4; break;
case PDF_RGB555: FinalizeLineM4 = FinalizeLineRGB555M4; break;
case PDF_RGB555: FinalizeLineM4 = FinalizeLineRGB555M4;
line_offset = 0 /* done in FinalizeLine */; break;
default: FinalizeLineM4 = NULL;
PicoDrawSetInternalBuf(Pico.est.Draw2FB, 328); break;
}