From: "Alex Volkov" Date: Thu, 10 Nov 2005 21:53:40 -0500 Subject: [SDL] BUG[?]: 32bpp RGBA->RGB colorkey blit, no SDL_SRCALPHA It seems there is either a documentation vs. reality mismatch or a real bug in SDL_blit_N.c:BlitNtoNKey(). The exact blit in question is a 32bpp RGBA->RGB, where RGBA has SDL_COLORKEY and *no* SDL_SRCALPHA flags. The doc in SDL_video.h states: * RGBA->RGB: * SDL_SRCALPHA not set: * copy RGB. * if SDL_SRCCOLORKEY set, only copy the pixels matching the * RGB values of the source colour key, ignoring alpha in the * comparison. BlitNtoNKey(), however, forgets to "ignore alpha in the comparison". The documentation makes perfect sense, so I think it is the code that is faulty. The attached patch corrects the code.

.TH "SDL_CreateThread" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_CreateThread\- Creates a new thread of execution that shares its parent\&'s properties\&.
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
#include "SDL_thread\&.h"
.sp
\fBSDL_Thread *\fBSDL_CreateThread\fP\fR(\fBint (*fn)(void *), void *data\fR);
.SH "DESCRIPTION"
.PP
\fBSDL_CreateThread\fP creates a new thread of execution that shares all of its parent\&'s global memory, signal handlers, file descriptors, etc, and runs the function \fBfn\fR passed the void pointer \fBdata\fR The thread quits when this function returns\&.
.SH "SEE ALSO"
.PP
\fI\fBSDL_KillThread\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00