Mercurial > sdl-ios-xcode
annotate test/testdyngl.c @ 4324:1496aa09e41e SDL-1.2
Steven Noonan to sdl
While trying to build the SDLMain.m included with SDL 1.2.14, with
#define SDL_USE_NIB_FILE 1:
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:
In function '-[SDLMain fixMenu:withAppName:]':
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:122:
warning: 'sizeToFit' is deprecated (declared at
/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSMenu.h:281)
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:
In function 'main':
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:376:
warning: 'poseAsClass:' is deprecated (declared at
/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:127)
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:376:
error: 'poseAsClass:' is unavailable (declared at
/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:127)
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:377:
warning: passing argument 2 of 'NSApplicationMain' from incompatible
pointer type
Eric Wing to Sam
I don't have time today to look at this in detail, but the problem is definitely the poseAsClass: method.
This was deprecated in Obj-C 2.0 and not retained in 64-bit.
I've never used this method and it has always been limited to esoteric uses. I think this is why Apple wanted to dump it (among complicating some other things they do). I have read about others getting bit by this when migrating. Long story short, there really isn't a migration path for this method. The question that then must be asked is why are we using it (what does it accomplish), and then figure out the 'proper' way of accomplishing that.
Glancing at SDLMain.m, it's not obvious to me why it is there or what it is really accomplishing. My only speculation is that NSApplicationMain hardcodes something to look for NSApplication and a subclass (SDLApplication) fails for some reason (assuming that the original coder did this for good reason).
Three thoughts come to mind.
1) The Info.plist has properties to control things related to the startup class and nib.
NSPrincipalClass, NSMainNibFile
Maybe principle class needs to be SDLApplication and we can delete the poseAs
2) I was told that 10.6 introduced new APIs to make programatic NIB wrangling and avoidance easier. Unfortunately, I don't know the specifics.
3) Instead of subclassing NSApplication in SDLMain.m, maybe we can just add a category. It looks like the following is the only thing that is done (quick glance):
@interface SDLApplication : NSApplication
@end
@implementation SDLApplication
/* Invoked from the Quit menu item */
- (void)terminate:(id)sender
{
/* Post a SDL_QUIT event */
SDL_Event event;
event.type = SDL_QUIT;
SDL_PushEvent(&event);
}
@end
So instead, we change this to: (warning written in mail and untested)
@interface NSApplication (SDLApplication)
- (void) terminate:(id)sender;
@end
@implementation NSApplication (SDLApplication)
/* Invoked from the Quit menu item */
- (void)terminate:(id)sender
{
/* Post a SDL_QUIT event */
SDL_Event event;
event.type = SDL_QUIT;
SDL_PushEvent(&event);
}
@end
Then everywhere SDLApplication is used, we change it to NSApplication (and remove the poseAsClass line).
Perhaps you could ask the bug reporter to try this solution (#3).
And if that fails, maybe try #1.
-Eric
Steven Noonan to Sam
The suggested change (diff below) seems to work fine.
- Steven
author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 12 Oct 2009 21:07:12 +0000 |
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1 /* |
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2 * Small SDL example to demonstrate dynamically loading |
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3 * OpenGL lib and functions |
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4 * |
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5 * (FYI it was supposed to look like snow in the wind or something...) |
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6 * |
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7 * Compile with : |
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8 * gcc testdyngl.c `sdl-config --libs --cflags` -o testdyngl -DHAVE_OPENGL |
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9 * |
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10 * You can specify a different OpenGL lib on the command line, i.e. : |
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11 * ./testdyngl /usr/X11R6/lib/libGL.so.1.2 |
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12 * or |
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13 * ./testdyngl /usr/lib/libGL.so.1.0.4496 |
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14 * |
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15 */ |
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16 |
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17 #include <stdio.h> |
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18 #include <stdlib.h> |
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19 |
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20 #include "SDL.h" |
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21 |
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22 #ifdef __MACOS__ |
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23 #define HAVE_OPENGL |
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24 #endif |
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25 |
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26 #ifdef HAVE_OPENGL |
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27 |
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28 #include "SDL_opengl.h" |
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29 |
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30 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ |
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31 static void quit(int rc) |
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32 { |
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33 SDL_Quit(); |
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34 exit(rc); |
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35 } |
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36 |
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37 void* get_funcaddr(const char* p) |
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38 { |
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39 void* f=SDL_GL_GetProcAddress(p); |
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40 if (f) |
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41 { |
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42 return f; |
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43 } |
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44 else |
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45 { |
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46 printf("Unable to get function pointer for %s\n",p); |
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47 quit(1); |
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48 } |
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49 return NULL; |
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50 } |
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51 |
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52 typedef struct |
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53 { |
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54 void(APIENTRY*glBegin)(GLenum); |
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55 void(APIENTRY*glEnd)(); |
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56 void(APIENTRY*glVertex3f)(GLfloat, GLfloat, GLfloat); |
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57 void(APIENTRY*glClearColor)(GLfloat, GLfloat, GLfloat, GLfloat); |
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58 void(APIENTRY*glClear)(GLbitfield); |
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59 void(APIENTRY*glDisable)(GLenum); |
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60 void(APIENTRY*glEnable)(GLenum); |
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61 void(APIENTRY*glColor4ub)(GLubyte,GLubyte,GLubyte,GLubyte); |
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62 void(APIENTRY*glPointSize)(GLfloat); |
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63 void(APIENTRY*glHint)(GLenum,GLenum); |
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64 void(APIENTRY*glBlendFunc)(GLenum,GLenum); |
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65 void(APIENTRY*glMatrixMode)(GLenum); |
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66 void(APIENTRY*glLoadIdentity)(); |
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67 void(APIENTRY*glOrtho)(GLdouble,GLdouble,GLdouble,GLdouble,GLdouble,GLdouble); |
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68 void(APIENTRY*glRotatef)(GLfloat,GLfloat,GLfloat,GLfloat); |
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69 void(APIENTRY*glViewport)(GLint,GLint,GLsizei,GLsizei); |
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70 void(APIENTRY*glFogf)(GLenum,GLfloat); |
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71 } |
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72 glfuncs; |
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73 |
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74 void init_glfuncs(glfuncs* f) |
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75 { |
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76 f->glBegin=get_funcaddr("glBegin"); |
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77 f->glEnd=get_funcaddr("glEnd"); |
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78 f->glVertex3f=get_funcaddr("glVertex3f"); |
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79 f->glClearColor=get_funcaddr("glClearColor"); |
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80 f->glClear=get_funcaddr("glClear"); |
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81 f->glDisable=get_funcaddr("glDisable"); |
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82 f->glEnable=get_funcaddr("glEnable"); |
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83 f->glColor4ub=get_funcaddr("glColor4ub"); |
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84 f->glPointSize=get_funcaddr("glPointSize"); |
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85 f->glHint=get_funcaddr("glHint"); |
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86 f->glBlendFunc=get_funcaddr("glBlendFunc"); |
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87 f->glMatrixMode=get_funcaddr("glMatrixMode"); |
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88 f->glLoadIdentity=get_funcaddr("glLoadIdentity"); |
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89 f->glOrtho=get_funcaddr("glOrtho"); |
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90 f->glRotatef=get_funcaddr("glRotatef"); |
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91 f->glViewport=get_funcaddr("glViewport"); |
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92 f->glFogf=get_funcaddr("glFogf"); |
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93 } |
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94 |
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95 #define NB_PIXELS 1000 |
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96 |
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97 int main(int argc,char *argv[]) |
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98 { |
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99 glfuncs f; |
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100 int i; |
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101 SDL_Event event; |
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102 int done=0; |
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103 GLfloat pixels[NB_PIXELS*3]; |
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104 const char *gl_library = NULL; /* Use the default GL library */ |
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105 |
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106 if (argv[1]) { |
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107 gl_library = argv[1]; |
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108 } |
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109 |
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110 if (SDL_Init(SDL_INIT_VIDEO)<0) |
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111 { |
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112 printf("Unable to init SDL : %s\n",SDL_GetError()); |
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113 return(1); |
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114 } |
990
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115 |
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116 if (SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER,1)<0) |
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117 { |
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118 printf("Unable to set GL attribute : %s\n",SDL_GetError()); |
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119 quit(1); |
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120 } |
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121 |
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122 if (SDL_GL_LoadLibrary(gl_library)<0) |
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123 { |
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124 printf("Unable to dynamically open GL lib : %s\n",SDL_GetError()); |
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125 quit(1); |
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126 } |
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127 |
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128 if (SDL_SetVideoMode(640,480,0,SDL_OPENGL)==NULL) |
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129 { |
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130 printf("Unable to open video mode : %s\n",SDL_GetError()); |
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131 quit(1); |
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132 } |
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133 |
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134 /* Set the window manager title bar */ |
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135 SDL_WM_SetCaption( "SDL Dynamic OpenGL Loading Test", "testdyngl" ); |
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136 |
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137 init_glfuncs(&f); |
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138 |
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139 for(i=0;i<NB_PIXELS;i++) |
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140 { |
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141 pixels[3*i]=rand()%250-125; |
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142 pixels[3*i+1]=rand()%250-125; |
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143 pixels[3*i+2]=rand()%250-125; |
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144 } |
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145 |
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146 f.glViewport(0,0,640,480); |
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147 |
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148 f.glMatrixMode(GL_PROJECTION); |
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149 f.glLoadIdentity(); |
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150 f.glOrtho(-100,100,-100,100,-500,500); |
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151 |
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152 f.glMatrixMode(GL_MODELVIEW); |
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153 f.glLoadIdentity(); |
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154 |
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155 f.glEnable(GL_DEPTH_TEST); |
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156 f.glDisable(GL_TEXTURE_2D); |
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157 f.glEnable(GL_BLEND); |
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158 f.glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
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159 |
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160 f.glClearColor(0.0f,0.0f,0.0f,0.0f); |
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161 f.glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); |
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162 |
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163 f.glEnable(GL_POINT_SMOOTH); |
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164 f.glHint(GL_POINT_SMOOTH_HINT,GL_NICEST); |
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165 f.glPointSize(5.0f); |
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166 f.glEnable(GL_FOG); |
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167 f.glFogf(GL_FOG_START,-500); |
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168 f.glFogf(GL_FOG_END,500); |
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169 f.glFogf(GL_FOG_DENSITY,0.005); |
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170 |
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171 do |
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172 { |
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173 f.glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); |
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174 |
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175 f.glRotatef(2.0,1.0,1.0,1.0); |
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176 f.glRotatef(1.0,0.0,1.0,1.0); |
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177 |
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178 f.glColor4ub(255,255,255,255); |
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179 f.glBegin(GL_POINTS); |
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180 for(i=0;i<NB_PIXELS;i++) |
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181 { |
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182 f.glVertex3f(pixels[3*i],pixels[3*i+1],pixels[3*i+2]); |
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183 } |
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184 f.glEnd(); |
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185 SDL_GL_SwapBuffers(); |
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186 |
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187 while(SDL_PollEvent(&event)) |
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188 { |
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189 if(event.type & SDL_KEYDOWN) |
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190 done=1; |
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191 } |
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192 |
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193 SDL_Delay(20); |
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194 } |
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195 while(!done); |
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196 |
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197 SDL_Quit(); |
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198 return 0; |
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199 } |
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200 |
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201 #else /* HAVE_OPENGL */ |
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202 |
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203 int main(int argc, char *argv[]) |
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204 { |
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205 printf("No OpenGL support on this system\n"); |
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206 return 1; |
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207 } |
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208 |
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209 #endif /* HAVE_OPENGL */ |