TriangleCodecIndexed8BitPackSOA4Flags Class Reference

#include <TriangleCodecIndexed8BitPackSOA4Flags.h>

Classes
class	DecodingContext
	This class is used to decode and decompress triangle data packed by the EncodingContext. More...
class	EncodingContext
	This class is used to encode and compress triangle data into a byte buffer. More...
struct	TriangleBlock
	A block of 4 triangles. More...
struct	TriangleBlockHeader
	A triangle header, will be followed by one or more TriangleBlocks. More...
class	TriangleHeader
class	ValidationContext
	This class is used to validate that the triangle data will not be degenerate after compression. More...
struct	VertexData
	A single packed vertex. More...

Public Types
enum	EComponentData : uint32 { COMPONENT_BITS = 21 , COMPONENT_MASK = (1 << COMPONENT_BITS) - 1 }
	Amount of bits per component. More...
enum	EVertexXY : uint32 { COMPONENT_X = 0 , COMPONENT_Y1 = COMPONENT_BITS , COMPONENT_Y1_BITS = 32 - COMPONENT_BITS }
	Packed X and Y coordinate. More...
enum	EVertexZY : uint32 { COMPONENT_Z = 0 , COMPONENT_Y2 = COMPONENT_BITS , COMPONENT_Y2_BITS = 31 - COMPONENT_BITS }
	Packed Z and Y coordinate. More...
enum	ETriangleBlockHeaderFlags : uint32 { OFFSET_TO_VERTICES_BITS = 29 , OFFSET_TO_VERTICES_MASK = (1 << OFFSET_TO_VERTICES_BITS) - 1 , OFFSET_TO_USERDATA_BITS = 3 , OFFSET_TO_USERDATA_MASK = (1 << OFFSET_TO_USERDATA_BITS) - 1 }

Static Public Attributes
static constexpr int	TriangleHeaderSize = sizeof(TriangleHeader)
	Size of the header (an empty struct is always > 0 bytes so this needs a separate variable)
static constexpr bool	ChangesOffsetOnPack = false
	If this codec could return a different offset than the current buffer size when calling Pack()

Detailed Description

Store vertices in 64 bits and indices in 8 bits + 8 bit of flags per triangle like this:

TriangleBlockHeader, TriangleBlock (4 triangles and their flags in 16 bytes), TriangleBlock... [Optional] UserData (4 bytes per triangle)

Vertices are stored:

VertexData (1 vertex in 64 bits), VertexData...

They're compressed relative to the bounding box as provided by the node codec.

Member Enumeration Documentation

EComponentData

enum TriangleCodecIndexed8BitPackSOA4Flags::EComponentData : uint32

Amount of bits per component.

Enumerator
COMPONENT_BITS
COMPONENT_MASK

ETriangleBlockHeaderFlags

enum TriangleCodecIndexed8BitPackSOA4Flags::ETriangleBlockHeaderFlags : uint32

Enumerator
OFFSET_TO_VERTICES_BITS	Offset from current block to start of vertices in bytes.
OFFSET_TO_VERTICES_MASK
OFFSET_TO_USERDATA_BITS	When user data is stored, this is the number of blocks to skip to get to the user data (0 = no user data)
OFFSET_TO_USERDATA_MASK

EVertexXY

enum TriangleCodecIndexed8BitPackSOA4Flags::EVertexXY : uint32

Packed X and Y coordinate.

Enumerator
COMPONENT_X
COMPONENT_Y1
COMPONENT_Y1_BITS

EVertexZY

enum TriangleCodecIndexed8BitPackSOA4Flags::EVertexZY : uint32

Packed Z and Y coordinate.

Enumerator
COMPONENT_Z
COMPONENT_Y2
COMPONENT_Y2_BITS

Member Data Documentation

ChangesOffsetOnPack

constexpr bool TriangleCodecIndexed8BitPackSOA4Flags::ChangesOffsetOnPack = false

staticconstexpr

If this codec could return a different offset than the current buffer size when calling Pack()

TriangleHeaderSize

constexpr int TriangleCodecIndexed8BitPackSOA4Flags::TriangleHeaderSize = sizeof(TriangleHeader)

staticconstexpr

Size of the header (an empty struct is always > 0 bytes so this needs a separate variable)

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The documentation for this class was generated from the following file:

• Jolt/AABBTree/TriangleCodec/TriangleCodecIndexed8BitPackSOA4Flags.h