Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_GL_GetProcAddress.3 @ 664:abfdc08eb289
Date: Sun, 3 Aug 2003 22:07:57 +0200
From: Max Horn
Subject: SDL OSX fullscreen FIX
the attached patch fixes the fullscreen problems on SDL/OSX. The cause
was that click events are bounded by winRect. Now, winRect is set to
the size of the video surface. But if you e.g. request a 640x420
surface, you might get a 640x480 "real" surface. Still,
SDL_VideoSurface->h will be set to 420! Thus, the upper 60 pixels in my
example received no mouse down events.
My fix simply disables this clipping when in full screen mode - after
all, all clicks then should be inside the screen surface. Higher SDL
functions ensure that the coordinates then are clipped to 640x420. It
works fine in all my tests here. I don't know if it's the right thing
to do in multi screen scenarios, though.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 04 Aug 2003 01:00:30 +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_GetProcAddress" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" |
0 | 2 .SH "NAME" |
3 SDL_GL_GetProcAddress\- Get the address of a GL function | |
4 .SH "SYNOPSIS" | |
5 .PP | |
6 \fB#include "SDL\&.h" | |
7 .sp | |
8 \fBvoid *\fBSDL_GL_GetProcAddress\fP\fR(\fBconst char* proc\fR); | |
9 .SH "DESCRIPTION" | |
10 .PP | |
11 Returns the address of the GL function \fBproc\fR, or \fBNULL\fR if the function is not found\&. If the GL library is loaded at runtime, with \fI\fBSDL_GL_LoadLibrary\fP\fR, then \fIall\fP GL functions must be retrieved this way\&. Usually this is used to retrieve function pointers to OpenGL extensions\&. | |
12 .SH "EXAMPLE" | |
13 .PP | |
14 .nf | |
15 \f(CWtypedef void (*GL_ActiveTextureARB_Func)(unsigned int); | |
16 GL_ActiveTextureARB_Func glActiveTextureARB_ptr = 0; | |
17 int has_multitexture=1; | |
18 \&. | |
19 \&. | |
20 \&. | |
21 /* Get function pointer */ | |
22 glActiveTextureARB_ptr=(GL_ActiveTextureARB_Func) SDL_GL_GetProcAddress("glActiveTextureARB"); | |
23 | |
24 /* Check for a valid function ptr */ | |
25 if(!glActiveTextureARB_ptr){ | |
26 fprintf(stderr, "Multitexture Extensions not present\&. | |
27 "); | |
28 has_multitexture=0; | |
29 } | |
30 \&. | |
31 \&. | |
32 \&. | |
33 \&. | |
34 if(has_multitexture){ | |
35 glActiveTextureARB_ptr(GL_TEXTURE0_ARB); | |
36 \&. | |
37 \&. | |
38 } | |
39 else{ | |
40 \&. | |
41 \&. | |
42 }\fR | |
43 .fi | |
44 .PP | |
45 .SH "SEE ALSO" | |
46 .PP | |
47 \fI\fBSDL_GL_LoadLibrary\fP\fR | |
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
48 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01 |