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3D: fix boxtest coord overflow. fixes #57

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This commit is contained in:
StapleButter 2017-06-29 09:48:41 +02:00
parent da10f9b3f6
commit ad58a68fc9
1 changed files with 10 additions and 10 deletions
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20
src/GPU3D.cpp
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@ -1068,12 +1068,12 @@ void BoxTest(u32* params)
GXStat &= ~(1<<1);
s32 x0 = (s32)(s16)(params[0] & 0xFFFF);
s32 y0 = ((s32)params[0]) >> 16;
s32 z0 = (s32)(s16)(params[1] & 0xFFFF);
s32 x1 = ((s32)params[1]) >> 16;
s32 y1 = (s32)(s16)(params[2] & 0xFFFF);
s32 z1 = ((s32)params[2]) >> 16;
s16 x0 = (s16)(params[0] & 0xFFFF);
s16 y0 = ((s32)params[0]) >> 16;
s16 z0 = (s16)(params[1] & 0xFFFF);
s16 x1 = ((s32)params[1]) >> 16;
s16 y1 = (s16)(params[2] & 0xFFFF);
s16 z1 = ((s32)params[2]) >> 16;
x1 += x0;
y1 += y0;
@ -1095,10 +1095,10 @@ void BoxTest(u32* params)
s32 y = cube[i].Position[1];
s32 z = cube[i].Position[2];
cube[i].Position[0] = ((s64)x*ClipMatrix[0] + (s64)y*ClipMatrix[4] + (s64)z*ClipMatrix[8] + 0x1000*ClipMatrix[12]) >> 12;
cube[i].Position[1] = ((s64)x*ClipMatrix[1] + (s64)y*ClipMatrix[5] + (s64)z*ClipMatrix[9] + 0x1000*ClipMatrix[13]) >> 12;
cube[i].Position[2] = ((s64)x*ClipMatrix[2] + (s64)y*ClipMatrix[6] + (s64)z*ClipMatrix[10] + 0x1000*ClipMatrix[14]) >> 12;
cube[i].Position[3] = ((s64)x*ClipMatrix[3] + (s64)y*ClipMatrix[7] + (s64)z*ClipMatrix[11] + 0x1000*ClipMatrix[15]) >> 12;
cube[i].Position[0] = ((s64)x*ClipMatrix[0] + (s64)y*ClipMatrix[4] + (s64)z*ClipMatrix[8] + (s64)0x1000*ClipMatrix[12]) >> 12;
cube[i].Position[1] = ((s64)x*ClipMatrix[1] + (s64)y*ClipMatrix[5] + (s64)z*ClipMatrix[9] + (s64)0x1000*ClipMatrix[13]) >> 12;
cube[i].Position[2] = ((s64)x*ClipMatrix[2] + (s64)y*ClipMatrix[6] + (s64)z*ClipMatrix[10] + (s64)0x1000*ClipMatrix[14]) >> 12;
cube[i].Position[3] = ((s64)x*ClipMatrix[3] + (s64)y*ClipMatrix[7] + (s64)z*ClipMatrix[11] + (s64)0x1000*ClipMatrix[15]) >> 12;
}
// front face (-Z)