Mercurial > sdl-ios-xcode
view docs/man3/SDL_VideoInfo.3 @ 821:30168104389f
Date: Sat, 14 Feb 2004 14:52:40 +0200
From: "Mike Gorchak"
Subject: Batch of the QNX6 fixes for the SDL
1. Updated readme.QNX
2. Fixed crashes during intensive window updating under fast machines (got over 200 rectangles for update).
3. Fixed double-buffered fullscreen modes, now it works as needed.
4. Fixed Photon detection algorithm.
5. Fixed HWSURFACE update function.
6. Added SDL_PHOTON_FULLSCREEN_REFRESH environment variable support for control refresh rates under Photon.
7. Added 640x400 fullscreen mode emulation via 640x480 (if videodriver not supports original 640x400 mode of course) shifted by 40 vertical pixels from begin, to center it. It's needed for some old DOS games which ran in doubled 320x200 mode.
8. Added available video ram amount support.
8. Added hardware surface allocation/deallocation support if current videomode and videodriver supports it.
9. Added hardware filling support.
10. Added hardware blits support (simple and colorkeyed).
And I've added to testvidinfo test color-keyed blits benchmark (maybe need to add alpha blits benchmark too ?). Currently Photon not supporting any alpha hardware blittings (all drivers lack of alpha blitting code support, only software alpha blitting exist in photon, which is hundreds times slowest than the SDL's one). So I've not added the alpha support. I suppose new QNX 6.3 will have the hardware alpha support, so when it will be done, I'll add alpha support.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 14 Feb 2004 20:22:21 +0000 (2004-02-14) |
parents | e5bc29de3f0a |
children | 546f7c1eb755 |
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.TH "SDL_VideoInfo" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_VideoInfo\- Video Target information .SH "STRUCTURE DEFINITION" .PP .nf \f(CWtypedef struct{ Uint32 hw_available:1; Uint32 wm_available:1; Uint32 blit_hw:1; Uint32 blit_hw_CC:1; Uint32 blit_hw_A:1; Uint32 blit_sw:1; Uint32 blit_sw_CC:1; Uint32 blit_sw_A:1; Uint32 blit_fill; Uint32 video_mem; SDL_PixelFormat *vfmt; } SDL_VideoInfo;\fR .fi .PP .SH "STRUCTURE DATA" .TP 20 \fBhw_available\fR Is it possible to create hardware surfaces? .TP 20 \fBwm_available\fR Is there a window manager available .TP 20 \fBblit_hw\fR Are hardware to hardware blits accelerated? .TP 20 \fBblit_hw_CC\fR Are hardware to hardware colorkey blits accelerated? .TP 20 \fBblit_hw_A\fR Are hardware to hardware alpha blits accelerated? .TP 20 \fBblit_sw\fR Are software to hardware blits accelerated? .TP 20 \fBblit_sw_CC\fR Are software to hardware colorkey blits accelerated? .TP 20 \fBblit_sw_A\fR Are software to hardware alpha blits accelerated? .TP 20 \fBblit_fill\fR Are color fills accelerated? .TP 20 \fBvideo_mem\fR Total amount of video memory in Kilobytes .TP 20 \fBvfmt\fR \fIPixel format\fR of the video device .SH "DESCRIPTION" .PP This (read-only) structure is returned by \fI\fBSDL_GetVideoInfo\fP\fR\&. It contains information on either the \&'best\&' available mode (if called before \fI\fBSDL_SetVideoMode\fP\fR) or the current video mode\&. .SH "SEE ALSO" .PP \fI\fBSDL_PixelFormat\fR\fR, \fI\fBSDL_GetVideoInfo\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01