NAME

SDL_UpdateTexture - Update the given texture rectangle with new pixel data.

HEADER FILE

Defined in SDL3/SDL_render.h

SYNOPSIS

#include "SDL3/SDL.h"

bool SDL_UpdateTexture(SDL_Texture *texture, const SDL_Rect *rect, const void *pixels, int pitch);

DESCRIPTION

The pixel data must be in the pixel format of the texture, which can be queried using the

SDL_PROP_TEXTURE_FORMAT_NUMBER
property.

This is a fairly slow function, intended for use with static textures that do not change often.

If the texture is intended to be updated often, it is preferred to create the texture as streaming and use the locking functions referenced below. While this function will work with streaming textures, for optimization reasons you may not get the pixels back if you lock the texture afterward.

FUNCTION PARAMETERS

texture

the texture to update.

rect

an SDL_Rect
structure representing the area to update, or NULL to update the entire texture.

pixels

the raw pixel data in the format of the texture.

pitch

the number of bytes in a row of pixel data, including padding between lines.

RETURN VALUE

Returns true on success or false on failure; call

SDL_GetError () for more information.

THREAD SAFETY

This function should only be called on the main thread.

AVAILABILITY

This function is available since SDL 3.2.0.

SEE ALSO

•(3), SDL_LockTexture(3), •(3), SDL_UnlockTexture(3), •(3), SDL_UpdateNVTexture(3), •(3), SDL_UpdateYUVTexture(3)