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move the W=0 check, to be sure to check all the vertices

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This commit is contained in:
StapleButter
2018-12-20 01:40:32 +01:00
parent f6e6fa05ea
commit f86fe46035
1 changed files with 2 additions and 4 deletions
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6
src/GPU3D.cpp
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@ -1171,7 +1171,6 @@ void SubmitPolygon()
{ {
posX = 0; posX = 0;
posY = 0; posY = 0;
poly->Degenerate = true;
} }
else else
{ {
@ -1218,6 +1217,8 @@ void SubmitPolygon()
} }
u32 w = (u32)vtx->Position[3]; u32 w = (u32)vtx->Position[3];
if (w == 0) poly->Degenerate = true;
while ((w >> wsize) && (wsize < 32)) while ((w >> wsize) && (wsize < 32))
wsize += 4; wsize += 4;
} }
@ -1287,9 +1288,6 @@ void SubmitVertex()
vertextrans->Position[2] = (vertex[0]*ClipMatrix[2] + vertex[1]*ClipMatrix[6] + vertex[2]*ClipMatrix[10] + vertex[3]*ClipMatrix[14]) >> 12; vertextrans->Position[2] = (vertex[0]*ClipMatrix[2] + vertex[1]*ClipMatrix[6] + vertex[2]*ClipMatrix[10] + vertex[3]*ClipMatrix[14]) >> 12;
vertextrans->Position[3] = (vertex[0]*ClipMatrix[3] + vertex[1]*ClipMatrix[7] + vertex[2]*ClipMatrix[11] + vertex[3]*ClipMatrix[15]) >> 12; vertextrans->Position[3] = (vertex[0]*ClipMatrix[3] + vertex[1]*ClipMatrix[7] + vertex[2]*ClipMatrix[11] + vertex[3]*ClipMatrix[15]) >> 12;
//vertextrans->Position[3] &= 0x00FFFFFF;
//if (vertextrans->Position[3] < 0) printf("NEGATIVE W: %08X\n", vertextrans->Position[3]);
// this probably shouldn't be. // this probably shouldn't be.
// the way color is handled during clipping needs investigation. TODO // the way color is handled during clipping needs investigation. TODO
vertextrans->Color[0] = (VertexColor[0] << 12) + 0xFFF; vertextrans->Color[0] = (VertexColor[0] << 12) + 0xFFF;