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Added a note that SDL_RenderReadPixels() should be called before SDL_RenderPresent()

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Sam Lantinga 2022-03-18 10:28:38 -07:00
parent 6c96217727
commit 40b7326b38
1 changed files with 2 additions and 1 deletions
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include/SDL_render.h
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@ -1662,7 +1662,8 @@ extern DECLSPEC int SDLCALL SDL_RenderGeometryRaw(SDL_Renderer *renderer,
* Read pixels from the current rendering target to an array of pixels. * Read pixels from the current rendering target to an array of pixels.
* *
* **WARNING**: This is a very slow operation, and should not be used * **WARNING**: This is a very slow operation, and should not be used
* frequently. * frequently. If you're using this on the main rendering target, it
* should be called after rendering and before SDL_RenderPresent().
* *
* `pitch` specifies the number of bytes between rows in the destination * `pitch` specifies the number of bytes between rows in the destination
* `pixels` data. This allows you to write to a subrectangle or have padded * `pixels` data. This allows you to write to a subrectangle or have padded