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Size: 1295
Comment: Improved the pitch variable description
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Comment: EDITING ON IPAD, PLS REVIEW, Added comments on streaming textures
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| This is a fairly slow function, intended for use with static textures. | This is a fairly slow function, intended for use with static textures that do not change often. |
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| This function will work with streaming textures, but for optimization reasons you may not get the pixels back if you lock the texture afterward. | If the texture is intended to be updated often, it is preferred to create the texture as streaming and use the lockout ng functions referenced below. While this function will work with streaming textures, but for optimization reasons you may not get the pixels back if you lock the texture afterward. |
SDL_UpdateTexture
Use this function to update the given texture rectangle with new pixel data.
Contents
Syntax
int SDL_UpdateTexture(SDL_Texture* texture,
const SDL_Rect* rect,
const void* pixels,
int pitch)
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 |
pitch |
the number of bytes in a row of pixel data, including padding between lines |
Return Value
Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.
Code Examples
You can add your code example here
Remarks
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 lockout ng functions referenced below. While this function will work with streaming textures, but for optimization reasons you may not get the pixels back if you lock the texture afterward.
