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comparison test/testgamma.c @ 1151:be9c9c8f6d53

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Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe if SDL is built with a non-cdecl calling convention, and it's just generally bad practice anyhow. Now programs explicitly call SDL_Quit() where appropriate, wrap SDL_Quit() in a cdecl function where it can't be avoided, and rely on the parachute where a crash might have hit the atexit() before (these ARE test programs, after all!).
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 28 Sep 2005 11:36:20 +0000
parents 74212992fb08
children 782fd950bd46 c121d94672cb
comparison
equal deleted inserted replaced
1150:7d8e1925f35b 1151:be9c9c8f6d53
5 #include <stdio.h> 5 #include <stdio.h>
6 #include <string.h> 6 #include <string.h>
7 #include <math.h> 7 #include <math.h>
8 8
9 #include "SDL.h" 9 #include "SDL.h"
10
11 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
12 static void quit(int rc)
13 {
14 SDL_Quit();
15 exit(rc);
16 }
10 17
11 /* Turn a normal gamma value into an appropriate gamma ramp */ 18 /* Turn a normal gamma value into an appropriate gamma ramp */
12 void CalculateGamma(double gamma, Uint16 *ramp) 19 void CalculateGamma(double gamma, Uint16 *ramp)
13 { 20 {
14 int i, value; 21 int i, value;
80 87
81 /* Initialize SDL */ 88 /* Initialize SDL */
82 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { 89 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
83 fprintf(stderr, 90 fprintf(stderr,
84 "Couldn't initialize SDL: %s\n", SDL_GetError()); 91 "Couldn't initialize SDL: %s\n", SDL_GetError());
85 exit(1); 92 return(1);
86 } 93 }
87 atexit(SDL_Quit);
88 94
89 /* Initialize the display, always use hardware palette */ 95 /* Initialize the display, always use hardware palette */
90 screen = SDL_SetVideoMode(w, h, bpp, flags | SDL_HWPALETTE); 96 screen = SDL_SetVideoMode(w, h, bpp, flags | SDL_HWPALETTE);
91 if ( screen == NULL ) { 97 if ( screen == NULL ) {
92 fprintf(stderr, "Couldn't set %dx%d video mode: %s\n", 98 fprintf(stderr, "Couldn't set %dx%d video mode: %s\n",
93 w, h, SDL_GetError()); 99 w, h, SDL_GetError());
94 exit(1); 100 quit(1);
95 } 101 }
96 102
97 /* Set the window manager title bar */ 103 /* Set the window manager title bar */
98 SDL_WM_SetCaption("SDL gamma test", "testgamma"); 104 SDL_WM_SetCaption("SDL gamma test", "testgamma");
99 105
102 if ( *argv ) { 108 if ( *argv ) {
103 gamma = (float)atof(*argv); 109 gamma = (float)atof(*argv);
104 } 110 }
105 if ( SDL_SetGamma(gamma, gamma, gamma) < 0 ) { 111 if ( SDL_SetGamma(gamma, gamma, gamma) < 0 ) {
106 fprintf(stderr, "Unable to set gamma: %s\n", SDL_GetError()); 112 fprintf(stderr, "Unable to set gamma: %s\n", SDL_GetError());
107 exit(1); 113 quit(1);
108 } 114 }
109 115
110 #if 0 /* This isn't supported. Integrating the gamma ramps isn't exact */ 116 #if 0 /* This isn't supported. Integrating the gamma ramps isn't exact */
111 /* See what gamma was actually set */ 117 /* See what gamma was actually set */
112 float real[3]; 118 float real[3];
184 memset(red_ramp, i, sizeof(red_ramp)); 190 memset(red_ramp, i, sizeof(red_ramp));
185 SDL_SetGammaRamp(red_ramp, NULL, NULL); 191 SDL_SetGammaRamp(red_ramp, NULL, NULL);
186 } 192 }
187 SDL_Delay(1*1000); 193 SDL_Delay(1*1000);
188 194
195 SDL_Quit();
189 return(0); 196 return(0);
190 } 197 }