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Trying to switch to 16 bit indices

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Dynamitos
2024-04-06 08:29:15 +02:00
parent 505e7d6547
commit 7a713afdb4
12 changed files with 81 additions and 99 deletions
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src/Engine/Graphics/Meshlet.cpp
+10 -29
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@@ -32,6 +32,7 @@ void completeMeshlet(Array<Meshlet>& meshlets, Meshlet& current)
{
meshlets.add(current);
current = {
.boundingBox = AABB(),
.numVertices = 0,
.numPrimitives = 0,
};
@@ -60,40 +61,20 @@ void addTriangle(Array<Meshlet>& meshlets, Meshlet& current, Triangle tri)
}
}
void Meshlet::build(const Array<Vector>& positions, const Array<uint32>& indices, Array<Meshlet>& meshlets)
void Meshlet::build(const Array<Vector>& positions, const Array<uint16>& indices, Array<Meshlet>& meshlets)
{
Meshlet current = {
.numVertices = 0,
.numPrimitives = 0,
};
Array<Triangle> triangles(indices.size() / 3);
for (size_t i = 0; i < triangles.size(); ++i)
for (size_t i = 0; i < indices.size() / 3; ++i)
{
triangles[i].indices[0] = indices[i * 3 + 0];
triangles[i].indices[1] = indices[i * 3 + 1];
triangles[i].indices[2] = indices[i * 3 + 2];
}
while (!triangles.empty())
{
uint32 best = 0;
float lowestSurface = std::numeric_limits<float>::max();
AABB newAABB;
for (uint32 i = 0; i < triangles.size(); ++i)
{
AABB adjusted = current.boundingBox;
adjusted.adjust(positions[triangles[i].indices[0]]);
adjusted.adjust(positions[triangles[i].indices[1]]);
adjusted.adjust(positions[triangles[i].indices[2]]);
float surface = adjusted.surfaceArea();
if (surface < lowestSurface)
{
lowestSurface = surface;
best = i;
newAABB = adjusted;
}
}
current.boundingBox = newAABB;
addTriangle(meshlets, current, triangles[best]);
triangles.removeAt(best);
addTriangle(meshlets, current, Triangle{
.indices = {
indices[i * 3 + 0],
indices[i * 3 + 1],
indices[i * 3 + 2],
},
});
}
}