Mercurial > sdl-ios-xcode
view docs/man3/SDL_InitSubSystem.3 @ 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 |
parents | e5bc29de3f0a |
children | 546f7c1eb755 |
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.TH "SDL_InitSubSystem" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" .SH "NAME" SDL_InitSubSystem\- Initialize subsystems .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBint \fBSDL_InitSubSystem\fP\fR(\fBUint32 flags\fR); .SH "DESCRIPTION" .PP After SDL has been initialized with \fI\fBSDL_Init\fP\fR you may initialize uninitialized subsystems with \fBSDL_InitSubSystem\fP\&. The \fBflags\fR parameter is the same as that used in \fI\fBSDL_Init\fP\fR\&. .SH "EXAMPLES" .PP .nf \f(CW/* Seperating Joystick and Video initialization\&. */ SDL_Init(SDL_INIT_VIDEO); \&. \&. SDL_SetVideoMode(640, 480, 16, SDL_DOUBLEBUF|SDL_FULLSCREEN); \&. /* Do Some Video stuff */ \&. \&. /* Initialize the joystick subsystem */ SDL_InitSubSystem(SDL_INIT_JOYSTICK); /* Do some stuff with video and joystick */ \&. \&. \&. /* Shut them both down */ SDL_Quit();\fR .fi .PP .SH "RETURN VALUE" .PP Returns \fB-1\fR on an error or \fB0\fR on success\&. .SH "SEE ALSO" .PP \fI\fBSDL_Init\fP\fR, \fI\fBSDL_Quit\fP\fR, \fI\fBSDL_QuitSubSystem\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00