====== (This function is part of SDL_image, a separate library from SDL.) ======
= IMG_LoadTexture_RW =

Load an image from an SDL data source into a GPU texture.

== Syntax ==

<syntaxhighlight lang='c'>
SDL_Texture * IMG_LoadTexture_RW(SDL_Renderer *renderer, SDL_RWops *src, int freesrc);
</syntaxhighlight>

== Function Parameters ==

{|
|'''renderer'''
|the SDL_Renderer to use to create the GPU texture.
|-
|'''src'''
|an SDL_RWops that data will be read from.
|-
|'''freesrc'''
|non-zero to close/free the SDL_RWops before returning, zero to leave it open.
|}

== Return Value ==

Returns a new texture, or NULL on error.

== Remarks ==

An SDL_Texture represents an image in GPU memory, usable by SDL's 2D Render
API. This can be significantly more efficient than using a CPU-bound
SDL_Surface if you don't need to manipulate the image directly after
loading it.

If the loaded image has transparency or a colorkey, a texture with an alpha
channel will be created. Otherwise, SDL_image will attempt to create an
SDL_Texture in the most format that most reasonably represents the image
data (but in many cases, this will just end up being 32-bit RGB or 32-bit
RGBA).

If <code>freesrc</code> is non-zero, the RWops will be closed before
returning, whether this function succeeds or not. SDL_image reads
everything it needs from the RWops during this call in any case.

There is a separate function to read files from disk without having to deal
with SDL_RWops: <code>[[IMG_LoadTexture]](renderer, "filename.jpg")</code>
will call this function and manage those details for you, determining the
file type from the filename's extension.

There is also [[IMG_LoadTextureTyped_RW]](), which is equivalent to this
function except a file extension (like "BMP", "JPG", etc) can be specified,
in case SDL_image cannot autodetect the file format.

If you would rather decode an image to an SDL_Surface (a buffer of pixels
in CPU memory), call [[IMG_Load]]() instead.

When done with the returned texture, the app should dispose of it with a
call to SDL_DestroyTexture().

== Version ==

This function is available since SDL_image 2.0.0.

== Related Functions ==

:[[IMG_LoadTexture]]
:[[IMG_LoadTextureTyped_RW]]
:[[SDL_DestroyTexture]]

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[[CategoryAPI]]