ModelViewer Namespace Reference

ModelViewer implementation. More...

Classes
class	App
	Model Viewer Application implementation. More...
struct	Camera
struct	Grid
struct	Instance
struct	MeshAllocation
struct	MeshLodAllocation
struct	MeshLodScratchBuffers
struct	MeshMeshlet
	Meshlet structure containing offsets and counts to access meshlet data. More...
struct	MeshScratchBuffers
struct	MeshVertex
	Full-size vertex structure for static meshes. More...
struct	MeshVertexCompact
	Compact 4-byte aligned vertex structure for static meshes. More...
class	Scene

Typedefs
using	MeshIndex = uint32_t
using	MeshMicroIndex = uint8_t
using	SceneHandle = uint32_t

Functions
static void *	meshoptAlloc (size_t size)
static void	meshoptFree (void *ptr)
template<typename Vertex , typename Index >
void	optimizeVertexIndex (Vector< Vertex > &vertices, Vector< Index > &indices)
float	meshGenerateLod (Vector< MeshIndex > &outIndices, Span< const MeshVertex > vertices, Span< const MeshIndex > indices, const float lodScale)
	Generate a simplified LOD mesh index buffer from the input mesh.
void	meshBuildMeshlets (Vector< MeshMeshlet > &outMeshlet, Vector< MeshIndex > &outMeshletVertices, Vector< MeshMicroIndex > &outMeshletTriangles, Span< const MeshVertex > vertices, Span< const MeshIndex > indices)
	Build meshlets from a mesh.
void	meshLoadObjFile (Vector< MeshVertex > &outVertex, Vector< MeshIndex > &outIndex, const Native::Path &path)
	Load a mesh from an OBJ file.
void	drawGizmoCameraFrustum (mat4 viewProj, mat4 frustumViewProj, ImColor color, float lineThickness)
Tuple< ImVec2, ImVec2, ImDrawList * >	getGizmoDrawOffsetRegionList ()
MeshScratchBuffers	sceneMeshDataFromVertexIndex (Span< MeshVertex > vertices, Span< MeshIndex > indices, Allocator *allocator, int numLods=kMaxSceneMeshLodCount, bool buildMeshlets=true)

Variables
SceneHandle	mesh
static DefaultAllocator	MeshoptAllocator
constexpr uint32_t	kMeshletMaxVertices = 64
constexpr uint32_t	kMeshletMaxTriangles = 96
constexpr int	kMaxSceneMeshLodCount = 4
constexpr uint32_t	kSceneInvalid = ~0u

Detailed Description

ModelViewer implementation.

Typedef Documentation

MeshIndex

using ModelViewer::MeshIndex = typedef uint32_t

MeshMicroIndex

using ModelViewer::MeshMicroIndex = typedef uint8_t

SceneHandle

using ModelViewer::SceneHandle = typedef uint32_t

Function Documentation

drawGizmoCameraFrustum()

IMGUI_API void ModelViewer::drawGizmoCameraFrustum	(	mat4	viewProj,
		mat4	frustumViewProj,
		ImColor	color,
		float	lineThickness
	)

getGizmoDrawOffsetRegionList()

Tuple< ImVec2, ImVec2, ImDrawList * > ModelViewer::getGizmoDrawOffsetRegionList ( )

inline

meshBuildMeshlets()

void ModelViewer::meshBuildMeshlets	(	Vector< MeshMeshlet > &	outMeshlet,
		Vector< MeshIndex > &	outMeshletVertices,
		Vector< MeshMicroIndex > &	outMeshletTriangles,
		Span< const MeshVertex >	vertices,
		Span< const MeshIndex >	indices
	)

Build meshlets from a mesh.

Parameters

outMeshlet	Output meshlet array
outMeshletVertices	Output meshlet vertex indirection array
outMeshletTriangles	Output meshlet triangle index array (into meshlet vertices)
vertices	Input vertex array
indices	Input index array

meshGenerateLod()

float ModelViewer::meshGenerateLod	(	Vector< MeshIndex > &	outIndices,
		Span< const MeshVertex >	vertices,
		Span< const MeshIndex >	indices,
		const float	lodScale
	)

Generate a simplified LOD mesh index buffer from the input mesh.

Parameters

outIndices	Output index array for the LOD mesh
vertices	Input vertex array
indices	Input source index array.
lodScale	Scale factor for the LOD (0.0 - 1.0)

Returns

Error factor of this LOD to the input mesh

meshLoadObjFile()

void ModelViewer::meshLoadObjFile	(	Vector< MeshVertex > &	outVertex,
		Vector< MeshIndex > &	outIndex,
		const Native::Path &	path
	)

Load a mesh from an OBJ file.

Parameters

outVertex	Output vertex array
outIndex	Output index array
path	Path to the OBJ file

meshoptAlloc()

static void * ModelViewer::meshoptAlloc ( size_t  size )

static

meshoptFree()

static void ModelViewer::meshoptFree ( void *  ptr )

static

optimizeVertexIndex()

template<typename Vertex , typename Index >

void ModelViewer::optimizeVertexIndex	(	Vector< Vertex > &	vertices,
		Vector< Index > &	indices
	)

sceneMeshDataFromVertexIndex()

MeshScratchBuffers ModelViewer::sceneMeshDataFromVertexIndex	(	Span< MeshVertex >	vertices,
		Span< MeshIndex >	indices,
		Allocator *	allocator,
		int	numLods = kMaxSceneMeshLodCount,
		bool	buildMeshlets = true
	)

Variable Documentation

kMaxSceneMeshLodCount

constexpr int ModelViewer::kMaxSceneMeshLodCount = 4

constexpr

kMeshletMaxTriangles

constexpr uint32_t ModelViewer::kMeshletMaxTriangles = 96

constexpr

kMeshletMaxVertices

constexpr uint32_t ModelViewer::kMeshletMaxVertices = 64

constexpr

kSceneInvalid

constexpr uint32_t ModelViewer::kSceneInvalid = ~0u

constexpr

mesh

SceneHandle ModelViewer::mesh

MeshoptAllocator

DefaultAllocator ModelViewer::MeshoptAllocator

static