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Various fixes

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- Scroll fog needed a break statement otherwise it could draw potentially multiples times.
- The fog atttenuation paramater doesn't appear to effect scroll fog, other than to potentially enable it. This fixes some issues with emergency call ambulance.
- Added support for the node discard attributes which sega rally2 uses to throw away specific geometry. This fixes junk that starts to show up in the levels after multiple runs.
This commit is contained in:
Ian Curtis 2023-11-05 17:39:23 +00:00
parent 628eeebbc3
commit aecf61762e
1 changed files with 12 additions and 3 deletions
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15
Src/Graphics/New3D/New3D.cpp
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@ -198,7 +198,7 @@ void CNew3D::DrawScrollFog()
{
// check to see if we have a fog start or density value
if (n.viewport.fogParams[3] > 0.0f || n.viewport.fogParams[4] > 0.0f) {
if (n.viewport.fogParams[3] > 0.0f || n.viewport.fogParams[4] > 0.0f || n.viewport.scrollAtt > 0.0f) {
float rgba[4];
auto& vp = nodePtr->viewport;
@ -207,7 +207,8 @@ void CNew3D::DrawScrollFog()
rgba[2] = vp.fogParams[2];
rgba[3] = vp.scrollFog;
glViewport(vp.x, vp.y, vp.width, vp.height);
m_r3dScrollFog.DrawScrollFog(rgba, vp.scrollAtt, vp.fogParams[6]);
m_r3dScrollFog.DrawScrollFog(rgba, 0, vp.fogParams[6]);
break;
}
}
}
@ -549,7 +550,10 @@ bool CNew3D::DrawModel(UINT32 modelAddr)
-----x-- -------- -------- -------- Is billboard
------x- -------- -------- -------- Child is billboard
-------x -------- -------- -------- Extra child pointer needed
-------x xxxxx--- -------- -------- Spare (unknown if used)
-------- -----xxx xxxxxx-- -------- Node ID
-------- -------- ------x- -------- Discard 1
-------- -------- -------x -------- Discard 2
-------- -------- -------- x------- Reset matrix
-------- -------- -------- -x------ Use child pointer
@ -630,6 +634,11 @@ void CNew3D::DescendCullingNode(UINT32 addr)
return; // viewport nodes aren't rendered
}
// node discard
if ((0x300 & node[0]) == 0x300) { // why 2 bits for node discard? Sega rally uses this
return;
}
// parse siblings
if ((node[0x00] & 0x07) != 0x06) { // colour table seems to indicate no siblings
if (!(sibling2Ptr & 0x1000000) && sibling2Ptr) {
@ -707,7 +716,7 @@ void CNew3D::DescendCullingNode(UINT32 addr)
float LODscale = fBlendRadius * m_nodeAttribs.currentModelScale / std::abs(m_modelMat.currentMatrix[14]);
LODFeatureType lodTableEntry = m_LODBlendTable->table[lodTablePointer];
const LODFeatureType& lodTableEntry = m_LODBlendTable->table[lodTablePointer];
if (m_nodeAttribs.currentDisableCulling)
{