Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_GL_LoadLibrary.3 @ 997:3bf4103b2b89
Date: Sat, 27 Nov 2004 13:35:43 +0100
From: "Martin Bickel"
Subject: [SDL] Patch: fixing uninitilized palette
while running Valgrind over my application I found the following
problem in SDL:
The function MapNto1 allocates SDL_Color colors[256] but does not
initialize it.
SDL_DitherColors is then called which initialized the r, g and b
component, but not the 'unused' component of each color.
When Map1to1 is called from MapNto1, it runs a memcmp on the colors,
which also evaluates the unused component and therefor returns
differences much more often than necessary.
So the 'unused' component of SDL_Color should be initialized. This
patch does this by calling memset for the whole array in MapNto1 .
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 30 Nov 2004 14:28:20 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
| rev | line source |
|---|---|
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
1 .TH "SDL_GL_LoadLibrary" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
| 3 SDL_GL_LoadLibrary\- Specify an OpenGL library | |
| 4 .SH "SYNOPSIS" | |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 .sp | |
| 8 \fBint \fBSDL_GL_LoadLibrary\fP\fR(\fBconst char *path\fR); | |
| 9 .SH "DESCRIPTION" | |
| 10 .PP | |
| 11 If you wish, you may load the OpenGL library at runtime, this must be done before \fI\fBSDL_SetVideoMode\fP\fR is called\&. The \fBpath\fR of the GL library is passed to \fBSDL_GL_LoadLibrary\fP and it returns \fB0\fR on success, or \fB-1\fR on an error\&. You must then use \fI\fBSDL_GL_GetProcAddress\fP\fR to retrieve function pointers to GL functions\&. | |
| 12 .SH "SEE ALSO" | |
| 13 .PP | |
| 14 \fI\fBSDL_GL_GetProcAddress\fP\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
15 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01 |