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Added SDL_RenderViewportSet() to tell whether the viewport was previously set to a specific rectangle.

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Fixes https://github.com/libsdl-org/SDL/issues/9029
This commit is contained in:
Sam Lantinga
2024-02-09 16:37:04 -08:00
parent 3ebbf0f409
commit 1162097135
5 changed files with 31 additions and 0 deletions
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17
include/SDL3/SDL_render.h
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@@ -1269,6 +1269,7 @@ extern DECLSPEC int SDLCALL SDL_ConvertEventToRenderCoordinates(SDL_Renderer *re
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_GetRenderViewport
* \sa SDL_RenderViewportSet
*/
extern DECLSPEC int SDLCALL SDL_SetRenderViewport(SDL_Renderer *renderer, const SDL_Rect *rect);
@@ -1282,10 +1283,26 @@ extern DECLSPEC int SDLCALL SDL_SetRenderViewport(SDL_Renderer *renderer, const
*
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_RenderViewportSet
* \sa SDL_SetRenderViewport
*/
extern DECLSPEC int SDLCALL SDL_GetRenderViewport(SDL_Renderer *renderer, SDL_Rect *rect);
/**
* Return whether an explicit rectangle was set as the viewport.
*
* This is useful if you're saving and restoring the viewport and want to know whether you should restore a specific rectangle or NULL. Note that the viewport is always reset when changing rendering targets.
*
* \param renderer the rendering context
* \returns SDL_TRUE if the viewport was set to a specific rectangle, or SDL_FALSE if it was set to NULL (the entire target)
*
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_GetRenderViewport
* \sa SDL_SetRenderViewport
*/
extern DECLSPEC SDL_bool SDLCALL SDL_RenderViewportSet(SDL_Renderer *renderer);
/**
* Set the clip rectangle for rendering on the specified target.
*