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Fixed bug 1622 - SDL_RenderSetViewport with empty SDL_Rect raises wrong error for OpenGL rendering backend

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It's now legal to set an empty viewport rect - it will prevent any rendering.

Also added an API to query the output size: SDL_GetRendererOutputSize()
This commit is contained in:
Sam Lantinga
2013-05-29 03:07:55 -07:00
parent f8c9841da0
commit 23f33cb76c
8 changed files with 103 additions and 64 deletions
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6
include/SDL_render.h
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@@ -211,6 +211,12 @@ extern DECLSPEC SDL_Renderer * SDLCALL SDL_GetRenderer(SDL_Window * window);
extern DECLSPEC int SDLCALL SDL_GetRendererInfo(SDL_Renderer * renderer,
SDL_RendererInfo * info);
/**
* \brief Get the output size of a rendering context.
*/
extern DECLSPEC int SDLCALL SDL_GetRendererOutputSize(SDL_Renderer * renderer,
int *w, int *h);
/**
* \brief Create a texture for a rendering context.
*