Mercurial > sdl-ios-xcode
view src/video/Xext/extensions/Xinerama.h @ 1240:3b8a43c428bb
From Bug #36:
There are a couple of issues with the selection of Altivec alpha-blitting
routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c.
1) There's no check for the presence of Altivec when checking if the
Blit32to565PixelAlphaAltivec() routine can be selected.
2) Altivec cannot be used in video memory, and there's no check if the
destination surface is a hardware surface. (Alpha-blitting to a hardware
surface with GPU support is a bad idea, but somebody's bound to do it anyway.)
Patch to fix these attached.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Sun, 08 Jan 2006 21:18:15 +0000 (2006-01-08) |
parents | 585a7e1285ae |
children | 782fd950bd46 c121d94672cb |
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/* $XFree86: xc/include/extensions/Xinerama.h,v 3.2 2000/03/01 01:04:20 dawes Exp $ */ #ifndef _Xinerama_h #define _Xinerama_h #include "SDL_name.h" typedef struct { int screen_number; short x_org; short y_org; short width; short height; } SDL_NAME(XineramaScreenInfo); Bool SDL_NAME(XineramaQueryExtension) ( Display *dpy, int *event_base, int *error_base ); Status SDL_NAME(XineramaQueryVersion)( Display *dpy, int *major, int *minor ); Bool SDL_NAME(XineramaIsActive)(Display *dpy); /* Returns the number of heads and a pointer to an array of structures describing the position and size of the individual heads. Returns NULL and number = 0 if Xinerama is not active. Returned array should be freed with XFree(). */ SDL_NAME(XineramaScreenInfo) * SDL_NAME(XineramaQueryScreens)( Display *dpy, int *number ); #endif /* _Xinerama_h */