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authorStapleButter <thetotalworm@gmail.com>2018-12-20 01:40:32 +0100
committerStapleButter <thetotalworm@gmail.com>2018-12-20 01:40:32 +0100
commitf86fe460350838d288a4515ac3b3865874a53e5b (patch)
treed82e39b0c56a2736bef1a78dd506b82101132f7a
parentf6e6fa05ea24f9fb8e23f4cdd9541ab3113fd296 (diff)
move the W=0 check, to be sure to check all the vertices
-rw-r--r--src/GPU3D.cpp6
1 files changed, 2 insertions, 4 deletions
diff --git a/src/GPU3D.cpp b/src/GPU3D.cpp
index b7a57f6..6e57d4a 100644
--- a/src/GPU3D.cpp
+++ b/src/GPU3D.cpp
@@ -1171,7 +1171,6 @@ void SubmitPolygon()
{
posX = 0;
posY = 0;
- poly->Degenerate = true;
}
else
{
@@ -1218,6 +1217,8 @@ void SubmitPolygon()
}
u32 w = (u32)vtx->Position[3];
+ if (w == 0) poly->Degenerate = true;
+
while ((w >> wsize) && (wsize < 32))
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[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.
// the way color is handled during clipping needs investigation. TODO
vertextrans->Color[0] = (VertexColor[0] << 12) + 0xFFF;