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Render: Allow empty cliprect.

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This fixes an issue where an empty cliprect is treated the same as a NULL
cliprect, causing the render backends to disable clipping.

Also adds a new API, SDL_RenderIsClipEnabled(render) that allows you to
differentiate between:
 - SDL_RenderSetClipRect(render, NULL)
 - SDL_Rect r = {0,0,0,0}; SDL_RenderSetClipRect(render, &r);

Fixes https://bugzilla.libsdl.org/show_bug.cgi?id=2504

--HG--
extra : amend_source : 9e5ac76e3f009d9ae49bc61c350df3ba891267b5
extra : histedit_source : b92b8be4d05b19a89fa0dee57f7ed6b1e924cb99%2Cce419f6ade87bafc78ff42702c1f263d2469e7e7
This commit is contained in:
Jørgen P. Tjernø 2014-04-19 13:15:41 -07:00
parent 7dd1a22acc
commit 431aca234b
11 changed files with 43 additions and 18 deletions
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1
src/dynapi/SDL_dynapi_procs.h
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@ -606,3 +606,4 @@ SDL_DYNAPI_PROC(SDL_AssertionHandler,SDL_GetAssertionHandler,(void **a),(a),retu
#ifdef __WIN32__
SDL_DYNAPI_PROC(SDL_bool,SDL_DXGIGetOutputInfo,(int a,int *b, int *c),(a,b,c),return)
#endif
SDL_DYNAPI_PROC(SDL_bool,SDL_RenderIsClipEnabled,(SDL_Renderer *a),(a),return)