Pixels

The Pixel module provides shared types and drawing primitives for software framebuffers and display-backed surfaces. More...

Files
file	color.h
	RGBA color type and helpers.

Macros
#define	PIX_COLOR_BLACK   0x000000FFu
	Common opaque colors (0xRRGGBBAA).
#define	PIX_COLOR_RGBA(r, g, b, a)
	Construct a pix_color_t from separate R/G/B/A components. More...
#define	PIX_COLOR_RGB(r, g, b)   PIX_COLOR_RGBA(r, g, b, 0xFFu)
	Construct a fully-opaque pix_color_t from R/G/B components.

Typedefs
typedef uint32_t	pix_color_t
	Color value type for pixel operations. More...

Functions
static uint8_t	pix_color_r (pix_color_t color)
	Extract the red channel.
static uint8_t	pix_color_g (pix_color_t color)
	Extract the green channel.
static uint8_t	pix_color_b (pix_color_t color)
	Extract the blue channel.
static uint8_t	pix_color_a (pix_color_t color)
	Extract the alpha channel.

Detailed Description

The Pixel module provides shared types and drawing primitives for software framebuffers and display-backed surfaces.

Macro Definition Documentation

PIX_COLOR_RGBA

#define PIX_COLOR_RGBA	(		r,
			g,
			b,
			a
	)

Value:

((pix_color_t)(((uint32_t)(uint8_t)(r) << 24) |                            \
                ((uint32_t)(uint8_t)(g) << 16) |                            \
                ((uint32_t)(uint8_t)(b) << 8) |                              \
                (uint32_t)(uint8_t)(a)))

Construct a pix_color_t from separate R/G/B/A components.

Definition at line 38 of file color.h.

Typedef Documentation

pix_color_t

typedef uint32_t pix_color_t

Color value type for pixel operations.

Encoded as 0xRRGGBBAA (red in the most-significant byte, alpha in the least-significant byte). This is independent of any particular storage layout (e.g. a bitmap's own pixel format) - it's how a single color is passed around, not how a buffer of pixels is packed in memory.

Definition at line 17 of file color.h.