xuanchi/XCEngine
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Define gaussian splat chunk data contract

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

20
engine/include/XCEngine/Resources/GaussianSplat/GaussianSplat.h
View File

@@ -4,6 +4,7 @@
#include <XCEngine/Core/Containers/Array.h>
#include <XCEngine/Core/Math/Bounds.h>
#include <XCEngine/Core/Math/Quaternion.h>
#include <XCEngine/Core/Math/Vector2.h>
#include <XCEngine/Core/Math/Vector3.h>
#include <XCEngine/Core/Math/Vector4.h>
#include <XCEngine/Core/Types.h>
@@ -45,6 +46,7 @@ enum class GaussianSplatSectionFormat : Core::uint32 {
constexpr Core::uint32 kGaussianSplatSHCoefficientCount = 45;
constexpr Core::uint32 kGaussianSplatSHColorChannelCount = 3;
constexpr Core::uint32 kGaussianSplatMaxSHOrder = 3;
constexpr Core::uint32 kGaussianSplatChunkSize = 256;
Core::uint32 ResolveGaussianSplatSHOrderFromCoefficientCount(Core::uint32 coefficientCount);
Core::uint32 ResolveGaussianSplatSHOrderFromSectionStride(Core::uint32 elementStride);
@@ -67,6 +69,24 @@ struct GaussianSplatSHRecord {
float coefficients[kGaussianSplatSHCoefficientCount] = {};
};
struct GaussianSplatChunkRecord {
Core::uint32 colR = 0u;
Core::uint32 colG = 0u;
Core::uint32 colB = 0u;
Core::uint32 colA = 0u;
Math::Vector2 posX = Math::Vector2::Zero();
Math::Vector2 posY = Math::Vector2::Zero();
Math::Vector2 posZ = Math::Vector2::Zero();
Core::uint32 sclX = 0u;
Core::uint32 sclY = 0u;
Core::uint32 sclZ = 0u;
Core::uint32 shR = 0u;
Core::uint32 shG = 0u;
Core::uint32 shB = 0u;
};
static_assert(sizeof(GaussianSplatChunkRecord) == 64u, "GaussianSplatChunkRecord layout must stay Unity-compatible");
struct GaussianSplatSection {
GaussianSplatSectionType type = GaussianSplatSectionType::Unknown;
GaussianSplatSectionFormat format = GaussianSplatSectionFormat::Unknown;