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neshawk: fastererer

This commit is contained in:
goyuken 2014-05-14 15:46:16 +00:00
parent e51e8dead5
commit 3405369d58
1 changed files with 50 additions and 8 deletions
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58
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.cs
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@ -196,18 +196,60 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
backdrop = emu.Settings.BackgroundColor;
bool useBackdrop = (backdrop & 0xFF000000) != 0;
//TODO - we could recalculate this on the fly (and invalidate/recalculate it when the palette is changed)
int width = BufferWidth;
for (int x = left; x <= right; x++)
if (useBackdrop)
{
for (int y = the_top; y <= the_bottom; y++)
int width = BufferWidth;
for (int x = left; x <= right; x++)
{
short pixel = emu.ppu.xbuf[(y << 8) + x];
if ((pixel & 0x8000) != 0 && useBackdrop)
for (int y = the_top; y <= the_bottom; y++)
{
pixels[((y - the_top) * width) + (x - left)] = backdrop;
short pixel = emu.ppu.xbuf[(y << 8) + x];
if ((pixel & 0x8000) != 0 && useBackdrop)
{
pixels[((y - the_top) * width) + (x - left)] = backdrop;
}
else pixels[((y - the_top) * width) + (x - left)] = emu.palette_compiled[pixel & 0x7FFF];
}
}
}
else
{
unsafe
{
fixed (int* dst_ = pixels)
fixed (short* src_ = emu.ppu.xbuf)
fixed (int* pal = emu.palette_compiled)
{
int* dst = dst_;
short* src = src_ + 256 * the_top + left;
int xcount = right - left + 1;
int srcinc = 256 - xcount;
int ycount = the_bottom - the_top + 1;
xcount /= 16;
for (int y = 0; y < ycount; y++)
{
for (int x = 0; x < xcount; x++)
{
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
*dst++ = pal[0x7fff & *src++];
}
src += srcinc;
}
}
else pixels[((y - the_top) * width) + (x - left)] = emu.palette_compiled[pixel & 0x7FFF];
}
}
}