Packing Utils

#include <core/materials/shaders/api/common.h>
#include <core/materials/shaders/api/pack_utils.h>

float2 packUnitVectorToOctahedron ( float3 normal ) #

Encodes a normal (unit) vector into two-component one using octahedron encoding.

Arguments

• float3 normal - Normal (unit) vector.

Return value

Two-component vector.

float3 unpackOctahedronToUnitVector ( float2 octahedron ) #

Decodes an octahedron vector into three-component normal (unit) one.

Arguments

• float2 octahedron - Two-component vector.

Return value

Normal (unit) vector.

float3 pack1212To888 ( float2 value ) #

Packs RG12 to RGB8.

Arguments

• float2 value - RG12 value.

Return value

RGB8 value.

float2 pack888To1212 ( float3 value ) #

Packs RG12 to RGB8.

Arguments

• float3 value - RGB8 value.

Return value

RG12 value.

float pack88To16 ( float2 value ) #

Packs RG8 into R16.

Arguments

• float2 value - RG8 value.

Return value

R16 value.

float2 pack16To88 ( float value ) #

Packs R16 into RG8.

Arguments

• float value - R16 value.

Return value

RG8 value.

float pack44To8 ( float a, float b ) #

Packs two 4-bit values into an 8-bit one.

Arguments

• float a - 4-bit value.
• float b - 4-bit value.

Return value

Output 8-bit value.

float2 pack8To44 ( float value ) #

Unpacks 8-bit value into two 4-bit values.

Arguments

• float value - 8-bit value.

Return value

Vector of two 4-bit values.

float2 pack8888To1616 ( float4 value ) #

Packs normalized RGBA8 into R16G16.

Arguments

• float4 value - RGBA8 value.

Return value

R16G16 value.

float4 pack1616To8888 ( float2 value ) #

Unpacks R16G16 into RGBA8.

Arguments

• float2 value - R16G16 value.

Return value

RGBA8 value.

uint pack8888To32 ( float4 data ) #

Packs RGBA8 to a 32-bit value.

This function is API-dependent.

Arguments

• float4 data - RGBA8 value to pack.

Return value

Packed 32-bit value.

float4 pack32To8888 ( uint data ) #

Unpacks a 32-bit value to RGBA8 value.

This function is API-dependent.

Arguments

• uint data - 32-bit value.

Return value

RGBA8 value.

float2 pack32To1616 ( uint data ) #

Unpacks 32-bit value into two 16-bit values.

This function is API-dependent.

Arguments

• uint data - 32-bit value.

Return value

Vector of two 16-bit values.

float2 pack32To1616 ( float data ) #

Unpacks 32-bit value into two 16-bit values.

This function is API-dependent.

Arguments

• float data - 32-bit value.

Return value

Vector of two 16-bit values.

float pack1616To32 ( float2 data ) #

Packs two 16-bit values into a 32-bit one.

This function is API-dependent.

Arguments

• float2 data - Vector of two 16-bit values.

Return value

32-bit value.