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Various improvements for SDF rendering

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This commit is contained in:
Wojciech Figat
2022-04-29 17:11:39 +02:00
parent 5465652466
commit 8428f28239
9 changed files with 28 additions and 16 deletions
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8
Source/Engine/Tools/ModelTool/ModelTool.cpp
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@@ -66,7 +66,7 @@ ModelSDFMip::ModelSDFMip(int32 mipIndex, const TextureMipData& mip)
{
}
bool ModelTool::GenerateModelSDF(Model* inputModel, ModelData* modelData, float resolutionScale, int32 lodIndex, ModelBase::SDFData* outputSDF, MemoryWriteStream* outputStream, const StringView& assetName)
bool ModelTool::GenerateModelSDF(Model* inputModel, ModelData* modelData, float resolutionScale, int32 lodIndex, ModelBase::SDFData* outputSDF, MemoryWriteStream* outputStream, const StringView& assetName, float backfacesThreshold)
{
PROFILE_CPU();
auto startTime = Platform::GetTimeSeconds();
@@ -176,7 +176,7 @@ bool ModelTool::GenerateModelSDF(Model* inputModel, ModelData* modelData, float
for (int32 i = 6; i < sampleCount; i++)
sampleDirections.Get()[i] = rand.GetUnitVector();
}
Function<void(int32)> sdfJob = [&sdf, &resolution, &sampleDirections, &scene, &voxels, &xyzToLocalMul, &xyzToLocalAdd, &encodeMAD, &formatStride, &formatWrite](int32 z)
Function<void(int32)> sdfJob = [&sdf, &resolution, &backfacesThreshold, &sampleDirections, &scene, &voxels, &xyzToLocalMul, &xyzToLocalAdd, &encodeMAD, &formatStride, &formatWrite](int32 z)
{
PROFILE_CPU_NAMED("Model SDF Job");
float hitDistance;
@@ -210,8 +210,8 @@ bool ModelTool::GenerateModelSDF(Model* inputModel, ModelData* modelData, float
float distance = minDistance;
// TODO: surface thickness threshold? shift reduce distance for all voxels by something like 0.01 to enlarge thin geometry
//if ((float)hitBackCount > )hitCount * 0.3f && hitCount != 0)
if ((float)hitBackCount > (float)sampleDirections.Count() * 0.6f && hitCount != 0)
// if ((float)hitBackCount > (float)hitCount * 0.3f && hitCount != 0)
if ((float)hitBackCount > (float)sampleDirections.Count() * backfacesThreshold && hitCount != 0)
{
// Voxel is inside the geometry so turn it into negative distance to the surface
distance *= -1;