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A culling node must follow immediately after a viewport.

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This commit is contained in:
Ian Curtis 2019-07-26 16:39:58 +00:00
parent cc830003f5
commit 17f4103123
1 changed files with 8 additions and 28 deletions
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36
Src/Graphics/New3D/New3D.cpp
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@ -619,16 +619,15 @@ void CNew3D::DescendNodePtr(UINT32 nodeAddr)
return;
}
switch ((nodeAddr >> 24) & 0xFF) // pointer type encoded in upper 8 bits
switch ((nodeAddr >> 24) & 0x5) // pointer type encoded in upper 8 bits
{
case 0x00: // culling node
case 0x00:
DescendCullingNode(nodeAddr & 0xFFFFFF);
break;
case 0x01: // model (perhaps bit 2 is a flag in this case?)
case 0x03:
case 0x01:
DrawModel(nodeAddr & 0xFFFFFF);
break;
case 0x04: // pointer list
case 0x04:
DescendPointerList(nodeAddr & 0xFFFFFF);
break;
default:
@ -907,30 +906,11 @@ void CNew3D::RenderViewport(UINT32 addr)
// Set up coordinate system and base matrix
InitMatrixStack(matrixBase, m_modelMat);
// Safeguard: weird coordinate system matrices usually indicate scenes that will choke the renderer
if (NULL != m_matrixBasePtr)
{
float m21, m32, m13;
// Get the three elements that are usually set and see if their magnitudes are 1
m21 = m_matrixBasePtr[6];
m32 = m_matrixBasePtr[10];
m13 = m_matrixBasePtr[5];
m21 *= m21;
m32 *= m32;
m13 *= m13;
if ((m21>1.05) || (m21<0.95))
return;
if ((m32>1.05) || (m32<0.95))
return;
if ((m13>1.05) || (m13<0.95))
return;
// Descend down the node link. Need to start with a culling node because that defines our culling radius.
auto childptr = vpnode[0x02];
if (((childptr >> 24) & 0x5) == 0) {
DescendNodePtr(vpnode[0x02]);
}
// Descend down the node link: Use recursive traversal
DescendNodePtr(vpnode[0x02]);
}
// render next viewport