colors.h File Reference

#include <smmintrin.h>
#include <stdint.h>

Go to the source code of this file.

Functions
uint32_t	colorsScaleSSE4 (uint32_t color, uint16_t scale)
	Scale a packed ARGB color by a fixed-point factor.
uint32_t	colorsMultiplySSE4 (uint32_t color1, uint32_t color2)
	Multiply two packed ARGB colors component-wise.
uint32_t	colorsLinearSSE4 (uint32_t color1, uint32_t color2, uint16_t t)
	Linearly interpolate between two packed ARGB colors.
uint32_t	colorsScaleAccumulateSSE4 (uint32_t color1, uint32_t color2, uint16_t scale)
	Scale a packed ARGB color and accumulate it on another one.
__m128	vectorLinearSSE4 (__m128 color1, __m128 color2, float t)
	Linearly interpolate between two color vectors.
__m128	unpackColorToVectorSSE4 (uint32_t color)
	Unpack a packed ARGB color into a normalised 4-float vector.
__m128	unpackColorToVectorScaledSSE4 (uint32_t color, float scale)
	Unpack a packed ARGB color into a scaled 4-float vector.
uint32_t	packVectorToColorSSE4 (__m128 color)
	Pack a normalised 4-float color vector into a packed ARGB color.

Function Documentation

colorsLinearSSE4()

uint32_t colorsLinearSSE4 ( uint32_t color1, uint32_t color2, uint16_t t )

inline

Linearly interpolate between two packed ARGB colors.

Parameters

color1	packed 8-bit ARGB color (t = 0)
color2	packed 8-bit ARGB color (t = 256)
t	Q8.8 interpolation factor (0 .. 256 = 0.0 .. 1.0)

Returns

interpolated packed ARGB color

colorsMultiplySSE4()

uint32_t colorsMultiplySSE4 ( uint32_t color1, uint32_t color2 )

inline

Multiply two packed ARGB colors component-wise.

Parameters

color1	packed 8-bit ARGB color
color2	packed 8-bit ARGB color

Returns

product packed ARGB color (components scaled by 1/256)

colorsScaleAccumulateSSE4()

uint32_t colorsScaleAccumulateSSE4 ( uint32_t color1, uint32_t color2, uint16_t scale )

inline

Scale a packed ARGB color and accumulate it on another one.

Parameters

color1	packed 8-bit ARGB color (accumulator)
color2	packed 8-bit ARGB color (to be scaled)
scale	Q8.8 scale factor (0 .. 256 = 0.0 .. 1.0)

Returns

color1 + color2 * scale, packed ARGB color (saturated)

colorsScaleSSE4()

uint32_t colorsScaleSSE4 ( uint32_t color, uint16_t scale )

inline

Scale a packed ARGB color by a fixed-point factor.

DIE ENGINE Depth Integration Engine / A modern ray-caster (c) Fred's Lab 2024-2026 Frédéric Meslin / info@.nosp@m.fred.nosp@m.slab..nosp@m.net SPDX-License-Identifier: MIT If used commercially, contributions, donations are highly appreciated.

color functions

Parameters

color	packed 8-bit ARGB color
scale	Q0.16 scale factor (0 .. 65535 = 0.0 .. ~1.0)

Returns

scaled packed ARGB color

packVectorToColorSSE4()

uint32_t packVectorToColorSSE4 ( __m128 color )

inline

Pack a normalised 4-float color vector into a packed ARGB color.

Parameters

color

color vector (components in 0.0 .. 1.0)

Returns

packed 8-bit ARGB color (saturated)

unpackColorToVectorScaledSSE4()

__m128 unpackColorToVectorScaledSSE4 ( uint32_t color, float scale )

inline

Unpack a packed ARGB color into a scaled 4-float vector.

Parameters

color	packed 8-bit ARGB color
scale	scale factor applied to all components

Returns

color vector (components in 0.0 .. ~scale)

unpackColorToVectorSSE4()

__m128 unpackColorToVectorSSE4 ( uint32_t color )

inline

Unpack a packed ARGB color into a normalised 4-float vector.

Parameters

color

packed 8-bit ARGB color

Returns

color vector (components in 0.0 .. ~1.0, scaled by 1/256)

vectorLinearSSE4()

__m128 vectorLinearSSE4 ( __m128 color1, __m128 color2, float t )

inline

Linearly interpolate between two color vectors.

Parameters

color1	4-float color vector (t = 0.0)
color2	4-float color vector (t = 1.0)
t	interpolation factor (0.0 .. 1.0)

Returns

interpolated color vector