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VideoSoftware: Implement fog range adjustment, fixing issue 6147.

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This commit is contained in:
NeoBrainX 2013-01-19 12:57:55 +01:00
parent d4fadf4b6f
commit ae146e8bc7
2 changed files with 11 additions and 4 deletions
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2
Source/Core/VideoCommon/Src/BPMemory.h
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@ -686,6 +686,8 @@ union FogRangeKElement
u32 LO : 12;
u32 regid : 8;
};
// TODO: Which scaling coefficient should we use here? This is just a guess!
float GetValue(int i) { return (i ? HI : LO) / 32.f; }
u32 HEX;
};

13
Source/Plugins/Plugin_VideoSoftware/Src/Tev.cpp
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@ -748,10 +748,15 @@ void Tev::Draw()
}
// stuff to do!
// here, where we'll have to add/handle x range adjustment (if related BP register it's enabled)
// x_adjust = sqrt((x-center)^2 + k^2)/k
// ze *= x_adjust
if(bpmem.fogRange.Base.Enabled)
{
// TODO: Check if this is correct (especially the magic values)
float offset = Position[0] - bpmem.fogRange.Base.Center + 324.f;
int index = 9 - abs(Position[0] - bpmem.fogRange.Base.Center + 324) / (162/5);
float k = bpmem.fogRange.K[index/2].GetValue(index%2);
float x_adjust = sqrt(offset*offset/162.f/162.f + k*k)/k;
ze *= x_adjust;
}
ze -= bpmem.fog.c_proj_fsel.GetC();