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NES: nametable viewer: moderate speedup

This commit is contained in:
goyuken 2014-03-01 05:36:43 +00:00
parent f346b604d4
commit caf30ca015
1 changed files with 53 additions and 71 deletions
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124
BizHawk.Client.EmuHawk/tools/NES/NESNameTableViewer.cs
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@ -74,21 +74,6 @@ namespace BizHawk.Client.EmuHawk
#region MMC5
private unsafe void GenerateExAttr(int* dst, int pitch, byte[] palram, byte[] ppumem, byte[] exram)
{
byte[] chr = _nes.GetBoard().VROM ?? _nes.GetBoard().VRAM;
int chr_mask = chr.Length - 1;
fixed (byte* chrptr = chr, palptr = palram, ppuptr = ppumem, exptr = exram)
{
DrawExNT(dst, pitch, palptr, ppuptr + 0x2000, exptr, chrptr, chr_mask);
DrawExNT(dst + 256, pitch, palptr, ppuptr + 0x2400, exptr, chrptr, chr_mask);
dst += pitch * 240;
DrawExNT(dst, pitch, palptr, ppuptr + 0x2800, exptr, chrptr, chr_mask);
DrawExNT(dst + 256, pitch, palptr, ppuptr + 0x2c00, exptr, chrptr, chr_mask);
}
}
private unsafe void DrawTile(int* dst, int pitch, byte* pal, byte* tile)
{
dst += 7;
@ -108,6 +93,57 @@ namespace BizHawk.Client.EmuHawk
}
}
private unsafe void GenerateExAttr(int* dst, int pitch, byte[] palram, byte[] ppumem, byte[] exram)
{
byte[] chr = _nes.GetBoard().VROM ?? _nes.GetBoard().VRAM;
int chr_mask = chr.Length - 1;
fixed (byte* chrptr = chr, palptr = palram, ppuptr = ppumem, exptr = exram)
{
DrawExNT(dst, pitch, palptr, ppuptr + 0x2000, exptr, chrptr, chr_mask);
DrawExNT(dst + 256, pitch, palptr, ppuptr + 0x2400, exptr, chrptr, chr_mask);
dst += pitch * 240;
DrawExNT(dst, pitch, palptr, ppuptr + 0x2800, exptr, chrptr, chr_mask);
DrawExNT(dst + 256, pitch, palptr, ppuptr + 0x2c00, exptr, chrptr, chr_mask);
}
}
private unsafe void GenerateAttr(int* dst, int pitch, byte[] palram, byte[] ppumem)
{
fixed (byte* palptr = palram, ppuptr = ppumem)
{
byte* chrptr = ppuptr + (_nes.ppu.reg_2000.bg_pattern_hi ? 0x1000 : 0);
DrawNT(dst, pitch, palptr, ppuptr + 0x2000, chrptr);
DrawNT(dst + 256, pitch, palptr, ppuptr + 0x2400, chrptr);
dst += pitch * 240;
DrawNT(dst, pitch, palptr, ppuptr + 0x2800, chrptr);
DrawNT(dst + 256, pitch, palptr, ppuptr + 0x2c00, chrptr);
}
}
private unsafe void DrawNT(int* dst, int pitch, byte* palram, byte* nt, byte* chr)
{
byte* at = nt + 0x3c0;
for (int ty = 0; ty < 30; ty++)
{
for (int tx = 0; tx < 32; tx++)
{
byte t = *nt++;
byte a = at[ty >> 2 << 3 | tx >> 2];
a >>= tx & 2;
a >>= (ty & 2) << 1;
int palnum = a & 3;
int tileaddr = t << 4;
DrawTile(dst, pitch, palram + palnum * 4, chr + tileaddr);
dst += 8;
}
dst -= 256;
dst += pitch * 8;
}
}
private unsafe void DrawExNT(int* dst, int pitch, byte* palram, byte* nt, byte* exnt, byte* chr, int chr_mask)
{
for (int ty = 0; ty < 30; ty++)
@ -179,65 +215,11 @@ namespace BizHawk.Client.EmuHawk
exram[i] = md.PeekByte(i);
GenerateExAttr(dptr, pitch, palram, ppuBuffer, exram);
goto finish;
}
int ytable = 0, yline = 0;
for (int y = 0; y < 480; y++)
else
{
if (y == 240)
{
ytable += 2;
yline = 240;
}
for (int x = 0; x < 512; x++, dptr++)
{
int table = (x >> 8) + ytable;
int ntaddr = table << 10;
int px = x & 255;
int py = y - yline;
int tx = px >> 3;
int ty = py >> 3;
int ntbyte_ptr = ntaddr + (ty * 32) + tx;
int atbyte_ptr = ntaddr + 0x3C0 + ((ty >> 2) << 3) + (tx >> 2);
int nt = ppuBuffer[ntbyte_ptr + 0x2000];
int at = ppuBuffer[atbyte_ptr + 0x2000];
if ((ty & 2) != 0)
{
at >>= 4;
}
if ((tx & 2) != 0)
{
at >>= 2;
}
at &= 0x03;
at <<= 2;
int bgpx = x & 7;
int bgpy = y & 7;
int pt_addr = (nt << 4) + bgpy + pt_add;
int pt_0 = ppuBuffer[pt_addr];
int pt_1 = ppuBuffer[pt_addr + 8];
int pixel = ((pt_0 >> (7 - bgpx)) & 1) | (((pt_1 >> (7 - bgpx)) & 1) << 1);
// if the pixel is transparent, draw the backdrop color
// TODO - consider making this optional? nintendulator does it and fceux doesnt need to do it due to buggy palette logic which creates the same effect
if (pixel != 0)
{
pixel |= at;
}
pixel = palram[pixel];
*dptr = _nes.LookupColor(pixel);
}
dptr += pitch - 512;
GenerateAttr(dptr, pitch, palram, ppuBuffer);
}
finish:
NameTableView.Nametables.UnlockBits(bmpdata);
NameTableView.Refresh();