framebuffer.h File Reference

Functions for managing and rendering framebuffers. More...

#include <stdint.h>
#include "powerblocks/core/utils/math/vec2.h"

Go to the source code of this file.

Classes
struct	framebuffer_t
	Data format for framebuffers. More...
struct	framebuffer_font_t
	Used to describe a font for the framebuffer to use. More...

Macros
#define	VIDEO_WIDTH   640
#define	VIDEO_HEIGHT   480

Functions
void	framebuffer_copy_rgba_into (framebuffer_t *framebuffer, const uint32_t *rgba, vec2i position, vec2i size)
	Copys RGBA8888 data into a frame buffer.
void	framebuffer_fill_rgba (framebuffer_t *framebuffer, uint32_t rgba, vec2i a, vec2i b)
	Fills a section of the frame buffer with RGBA8888 data.
void	framebuffer_put_text (framebuffer_t *framebuffer, uint32_t foreground, uint32_t background, vec2i position, const framebuffer_font_t *font, const char *str)
	Renders a bitmap font to the framebuffer.

Detailed Description

Functions for managing and rendering framebuffers.

Able to fill colors, copy data to and from, as well as render text into frame buffers.

Author

Samuel Fitzsimons (rainbain)

Date

2025 @license MIT (see LICENSE file)

Function Documentation

framebuffer_copy_rgba_into()

void framebuffer_copy_rgba_into ( framebuffer_t * framebuffer, const uint32_t * rgba, vec2i position, vec2i size )

extern

Copys RGBA8888 data into a frame buffer.

Copys data into a position of the framebuffer. Converts into the YUY data of the framebuffer.

Blends as it goes. Very nice

Parameters

framebuffer	Framebuffer to render into.
rgba	RGBA8888 color data of width x height.
x_pos	x position in the frame buffer.
y_pos	y position in the frame buffer.

framebuffer_fill_rgba()

void framebuffer_fill_rgba ( framebuffer_t * framebuffer, uint32_t rgba, vec2i a, vec2i b )

extern

Fills a section of the frame buffer with RGBA8888 data.

Fills the frame buffer with a color while doing blending as needed

Parameters

framebuffer	Framebuffer to render into.
rgba	RGBA8888 color
a	- Start position of the fill
b	- Stop position of the fill

framebuffer_put_text()

void framebuffer_put_text ( framebuffer_t * framebuffer, uint32_t foreground, uint32_t background, vec2i position, const framebuffer_font_t * font, const char * str )

extern

Renders a bitmap font to the framebuffer.

Renders a bitmap font to the frame buffer using the specified font. Special characters are not supported. It will just render that slot in the font.

Parameters

framebuffer	Framebuffer to render into.
foreground	RGBA8888 Color of the text itself
background	RGBA8888 Color of the background
position	Pixel position of the top left corner of the text.
font	Font to use
str	Zero terminated string to render