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annotate docs/man3/SDL_SetVideoMode.3 @ 2814:e841aa93e6be
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| author | Sam Lantinga <slouken@libsdl.org> |
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| date | Mon, 01 Dec 2008 00:07:45 +0000 |
| parents | 546f7c1eb755 |
| children | 1238da4a7112 |
| rev | line source |
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1 .TH "SDL_SetVideoMode" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
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3 SDL_SetVideoMode \- Set up a video mode with the specified width, height and bits-per-pixel\&. |
| 0 | 4 .SH "SYNOPSIS" |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 .sp | |
| 8 \fBSDL_Surface *\fBSDL_SetVideoMode\fP\fR(\fBint width, int height, int bpp, Uint32 flags\fR); | |
| 9 .SH "DESCRIPTION" | |
| 10 .PP | |
| 11 Set up a video mode with the specified width, height and bits-per-pixel\&. | |
| 12 .PP | |
| 13 If \fBbpp\fR is 0, it is treated as the current display bits per pixel\&. | |
| 14 .PP | |
| 15 The \fBflags\fR parameter is the same as the \fBflags\fR field of the \fI\fBSDL_Surface\fR\fR structure\&. OR\&'d combinations of the following values are valid\&. | |
| 16 .TP 20 | |
| 17 \fBSDL_SWSURFACE\fP | |
| 18 Create the video surface in system memory | |
| 19 .TP 20 | |
| 20 \fBSDL_HWSURFACE\fP | |
| 21 Create the video surface in video memory | |
| 22 .TP 20 | |
| 23 \fBSDL_ASYNCBLIT\fP | |
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24 Enables the use of asynchronous updates of the display surface\&. This will usually slow down blitting on single CPU machines, but may provide a speed increase on SMP systems\&. |
| 0 | 25 .TP 20 |
| 26 \fBSDL_ANYFORMAT\fP | |
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27 Normally, if a video surface of the requested bits-per-pixel (\fBbpp\fR) is not available, SDL will emulate one with a shadow surface\&. Passing \fBSDL_ANYFORMAT\fP prevents this and causes SDL to use the video surface, regardless of its pixel depth\&. |
| 0 | 28 .TP 20 |
| 29 \fBSDL_HWPALETTE\fP | |
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30 Give SDL exclusive palette access\&. Without this flag you may not always get the the colors you request with \fI\fBSDL_SetColors\fP\fR or \fI\fBSDL_SetPalette\fP\fR\&. |
| 0 | 31 .TP 20 |
| 32 \fBSDL_DOUBLEBUF\fP | |
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33 Enable hardware double buffering; only valid with SDL_HWSURFACE\&. Calling \fI\fBSDL_Flip\fP\fR will flip the buffers and update the screen\&. All drawing will take place on the surface that is not displayed at the moment\&. If double buffering could not be enabled then \fBSDL_Flip\fP will just perform a \fI\fBSDL_UpdateRect\fP\fR on the entire screen\&. |
| 0 | 34 .TP 20 |
| 35 \fBSDL_FULLSCREEN\fP | |
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36 SDL will attempt to use a fullscreen mode\&. If a hardware resolution change is not possible (for whatever reason), the next higher resolution will be used and the display window centered on a black background\&. |
| 0 | 37 .TP 20 |
| 38 \fBSDL_OPENGL\fP | |
| 39 Create an OpenGL rendering context\&. You should have previously set OpenGL video attributes with \fI\fBSDL_GL_SetAttribute\fP\fR\&. | |
| 40 .TP 20 | |
| 41 \fBSDL_OPENGLBLIT\fP | |
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42 Create an OpenGL rendering context, like above, but allow normal blitting operations\&. The screen (2D) surface may have an alpha channel, and \fI\fBSDL_UpdateRects\fP\fR must be used for updating changes to the screen surface\&. |
| 0 | 43 .TP 20 |
| 44 \fBSDL_RESIZABLE\fP | |
| 45 Create a resizable window\&. When the window is resized by the user a \fI\fBSDL_VIDEORESIZE\fP\fR event is generated and \fBSDL_SetVideoMode\fP can be called again with the new size\&. | |
| 46 .TP 20 | |
| 47 \fBSDL_NOFRAME\fP | |
| 48 If possible, \fBSDL_NOFRAME\fP causes SDL to create a window with no title bar or frame decoration\&. Fullscreen modes automatically have this flag set\&. | |
| 49 .PP | |
| 50 .RS | |
| 51 \fBNote: | |
| 52 .PP | |
| 53 Whatever \fBflags\fR \fBSDL_SetVideoMode\fP could satisfy are set in the \fBflags\fR member of the returned surface\&. | |
| 54 .RE | |
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55 .PP |
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56 .RS |
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57 \fBNote: |
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58 .PP |
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59 The \fBbpp\fR parameter is the number of bits per pixel, so a \fBbpp\fR of 24 uses the packed representation of 3 bytes/pixel\&. For the more common 4 bytes/pixel mode, use a \fBbpp\fR of 32\&. Somewhat oddly, both 15 and 16 will request a 2 bytes/pixel mode, but different pixel formats\&. |
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60 .RE |
| 0 | 61 .SH "RETURN VALUE" |
| 62 .PP | |
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63 The framebuffer surface, or \fBNULL\fR if it fails\&. The surface returned is freed by SDL_Quit() and should nt be freed by the caller\&. |
| 0 | 64 .SH "SEE ALSO" |
| 65 .PP | |
| 66 \fI\fBSDL_LockSurface\fP\fR, \fI\fBSDL_SetColors\fP\fR, \fI\fBSDL_Flip\fP\fR, \fI\fBSDL_Surface\fR\fR | |
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67 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01 |