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pce: Add internal ability to toggle between unsafe and safe rendering. Not exposed in gui. default unsafe. for debugging purposes. humor me. didnt bother hooking up for SGX

This commit is contained in:
beirich 2014-02-15 19:54:00 +00:00
parent 5849d2d80d
commit 4415673f31
2 changed files with 44 additions and 1 deletions
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44
BizHawk.Emulation.Cores/Consoles/PC Engine/VDC.Render.cs
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@ -112,7 +112,9 @@ namespace BizHawk.Emulation.Cores.PCEngine
RenderSpritesScanline(pce.Settings.ShowOBJ1);
}
unsafe void RenderBackgroundScanline(bool show)
Action<bool> RenderBackgroundScanline;
unsafe void RenderBackgroundScanlineUnsafe(bool show)
{
Array.Clear(PriorityBuffer, 0, FrameWidth);
@ -191,6 +193,46 @@ namespace BizHawk.Emulation.Cores.PCEngine
}
}
void RenderBackgroundScanlineSafe(bool show)
{
Array.Clear(PriorityBuffer, 0, FrameWidth);
if (BackgroundEnabled == false)
{
for (int i = 0; i < FrameWidth; i++)
FrameBuffer[(ActiveLine * FramePitch) + i] = vce.Palette[256];
return;
}
int batHeight = BatHeight * 8;
int batWidth = BatWidth * 8;
int vertLine = BackgroundY;
vertLine %= batHeight;
int yTile = (vertLine / 8);
int yOfs = vertLine % 8;
// This is not optimized. But it seems likely to remain that way.
int xScroll = Registers[BXR] & 0x3FF;
for (int x = 0; x < FrameWidth; x++)
{
int xTile = ((x + xScroll) / 8) % BatWidth;
int xOfs = (x + xScroll) & 7;
int tileNo = VRAM[(ushort)(((yTile * BatWidth) + xTile))] & 2047;
int paletteNo = VRAM[(ushort)(((yTile * BatWidth) + xTile))] >> 12;
int paletteBase = paletteNo * 16;
byte c = PatternBuffer[(tileNo * 64) + (yOfs * 8) + xOfs];
if (c == 0)
FrameBuffer[(ActiveLine * FramePitch) + x] = vce.Palette[0];
else
{
FrameBuffer[(ActiveLine * FramePitch) + x] = show ? vce.Palette[paletteBase + c] : vce.Palette[0];
PriorityBuffer[x] = 1;
}
}
}
byte[] heightTable = { 16, 32, 64, 64 };
public void RenderSpritesScanline(bool show)

1
BizHawk.Emulation.Cores/Consoles/PC Engine/VDC.cs
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@ -99,6 +99,7 @@ namespace BizHawk.Emulation.Cores.PCEngine
this.pce = pce;
this.cpu = cpu;
this.vce = vce;
RenderBackgroundScanline = RenderBackgroundScanlineUnsafe;
Registers[HSR] = 0x00FF;
Registers[HDR] = 0x00FF;