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Define gaussian splat chunk data contract

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This commit is contained in:
ssdfasd
2026-04-11 07:07:21 +08:00
parent b3acb5afc2
commit 92d5cc61cf
3 changed files with 108 additions and 20 deletions
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36
tests/Resources/GaussianSplat/test_gaussian_splat_loader.cpp
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@@ -163,16 +163,36 @@ SampleArtifactData BuildSampleArtifactData() {
sh[1].coefficients[index] = -0.02f * static_cast<float>(index + 1u);
}
const GaussianSplatChunkRecord chunks[1] = {
{
0x00010002u,
0x00030004u,
0x00050006u,
0x00070008u,
Vector2(-1.0f, 2.0f),
Vector2(-3.0f, 4.0f),
Vector2(-5.0f, 6.0f),
0x0009000Au,
0x000B000Cu,
0x000D000Eu,
0x000F0010u,
0x00110012u,
0x00130014u
}
};
SampleArtifactData sample;
sample.metadata.contentVersion = 3u;
sample.metadata.splatCount = 2u;
sample.metadata.chunkCount = 1u;
sample.metadata.bounds.SetMinMax(Vector3(-2.0f, -1.0f, -3.0f), Vector3(5.0f, 4.0f, 6.0f));
sample.metadata.positionFormat = GaussianSplatSectionFormat::VectorFloat32;
sample.metadata.otherFormat = GaussianSplatSectionFormat::OtherFloat32;
sample.metadata.colorFormat = GaussianSplatSectionFormat::ColorRGBA32F;
sample.metadata.shFormat = GaussianSplatSectionFormat::SHFloat32;
sample.metadata.chunkFormat = GaussianSplatSectionFormat::ChunkFloat32;
sample.sections.Reserve(4u);
sample.sections.Reserve(5u);
size_t payloadOffset = 0u;
auto appendSection = [&](GaussianSplatSectionType type,
GaussianSplatSectionFormat format,
@@ -223,6 +243,13 @@ SampleArtifactData BuildSampleArtifactData() {
sizeof(sh),
2u,
sizeof(GaussianSplatSHRecord));
appendSection(
GaussianSplatSectionType::Chunks,
GaussianSplatSectionFormat::ChunkFloat32,
chunks,
sizeof(chunks),
1u,
sizeof(GaussianSplatChunkRecord));
return sample;
}
@@ -317,13 +344,18 @@ TEST(GaussianSplatLoader, WritesAndLoadsArtifact) {
ASSERT_NE(gaussianSplat, nullptr);
EXPECT_EQ(gaussianSplat->GetContentVersion(), 3u);
EXPECT_EQ(gaussianSplat->GetSplatCount(), 2u);
EXPECT_EQ(gaussianSplat->GetChunkCount(), 1u);
EXPECT_EQ(gaussianSplat->GetBounds().GetMin(), Vector3(-2.0f, -1.0f, -3.0f));
EXPECT_EQ(gaussianSplat->GetBounds().GetMax(), Vector3(5.0f, 4.0f, 6.0f));
ASSERT_EQ(gaussianSplat->GetSections().Size(), 4u);
ASSERT_EQ(gaussianSplat->GetSections().Size(), 5u);
const GaussianSplatSection* shSection = gaussianSplat->FindSection(GaussianSplatSectionType::SH);
ASSERT_NE(shSection, nullptr);
EXPECT_EQ(shSection->elementCount, 2u);
EXPECT_EQ(shSection->elementStride, sizeof(GaussianSplatSHRecord));
const GaussianSplatSection* chunkSection = gaussianSplat->FindSection(GaussianSplatSectionType::Chunks);
ASSERT_NE(chunkSection, nullptr);
EXPECT_EQ(chunkSection->elementCount, 1u);
EXPECT_EQ(chunkSection->elementStride, sizeof(GaussianSplatChunkRecord));
ASSERT_NE(gaussianSplat->GetColorRecords(), nullptr);
EXPECT_EQ(gaussianSplat->GetColorRecords()[1].colorOpacity, Vector4(0.0f, 1.0f, 0.0f, 0.75f));