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Both lemans24 and dirt devils are rendering some totally transparent objects as the first model in each viewport. The HW seems to skip these entirely, and including them breaks our near/far plane calculations leading to Z fighting.

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This commit is contained in:
Ian Curtis 2018-09-19 20:43:41 +00:00
parent e3255e45f3
commit 3dbfa73734
1 changed files with 7 additions and 0 deletions
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7
Src/Graphics/New3D/New3D.cpp
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@ -926,6 +926,13 @@ void CNew3D::RenderViewport(UINT32 addr)
void CNew3D::CopyVertexData(const R3DPoly& r3dPoly, std::vector<FVertex>& vertexArray)
{
// both lemans 24 and dirt devils are rendering some totally transparent polys as the first object in each viewport
// in dirt devils it's parallel to the camera so is completel invisible, but breaks our depth calculation
// in lemans 24 its a sort of diamond shape, but never leaves a hole in the transparent geometry so must be being skipped by the h/w
if (r3dPoly.faceColour[3] == 0) {
return;
}
if (m_numPolyVerts==4) {
if (r3dPoly.number == 4) {
vertexArray.emplace_back(r3dPoly, 0); // construct directly inside container without copy