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Only create 3 probe layers per sector (covering the entire volume is too many probes)

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This commit is contained in:
Magnus Norddahl 2021-10-15 01:26:32 +02:00
parent 199d5d7043
commit 539bd9fd1d
1 changed files with 18 additions and 3 deletions
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21
src/lightmap/lightmap.cpp
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@ -646,6 +646,7 @@ void LightmapBuilder::CreateLightProbes()
float maxY = std::floor(map->MaxY / 65536.0f) + 1.0f;
float halfGridSize = GridSize * 0.5f;
float doubleGridSize = GridSize * 2.0f;
std::vector<std::vector<LightProbeSample>> probes; // order probes by subsector
probes.resize(map->NumGLSubsectors);
@ -661,13 +662,27 @@ void LightmapBuilder::CreateLightProbes()
{
float z0 = sec->floorplane.zAt(x, y);
float z1 = sec->ceilingplane.zAt(x, y);
float startZ = (z1 - z0 < halfGridSize) ? (z0 + z1) * 0.5f : z0 + halfGridSize;
for (float z = startZ; z < z1; z += GridSize)
float delta = z1 - z0;
if (delta > doubleGridSize)
{
LightProbeSample p[3];
p[0].Position = Vec3(x, y, z0 + halfGridSize);
p[1].Position = Vec3(x, y, z0 + (z1 - z0) * 0.5f);
p[2].Position = Vec3(x, y, z1 - halfGridSize);
for (int i = 0; i < 3; i++)
{
size_t index = (ptrdiff_t)(ssec - map->GLSubsectors);
probes[index].push_back(p[i]);
totalProbes++;
}
}
else if (delta > 0.0f)
{
LightProbeSample probe;
probe.Position.x = x;
probe.Position.y = y;
probe.Position.z = z;
probe.Position.z = z0 + (z1 - z0) * 0.5f;
size_t index = (ptrdiff_t)(ssec - map->GLSubsectors);
probes[index].push_back(probe);