Mercurial > sdl-ios-xcode
view test/testdyngl.c @ 957:217f119a19a0
Date: Thu, 2 Sep 2004 19:35:51 +0200
From: Max Horn
Subject: [Patch]: Improved menu code for SDLMain.m
the attached patch improves the menu setup for SDL apps built without a
.nib file. On 10.3, the application menus are empty with the current
SDL CVS version; after this patch, a proper app & window menu, with
"About", "Hide", "Quit", "Minimize" etc. entries are visible, just like
with the .nib enabled applications.
This *should* work on 10.2 and even 10.1, but I can't guarantee it, so
somebody should test there, ideally.
I also changed the way setupWorkingDirectory works by making use of the
Bundle APIs, that results in (IMO) less hackish code.
Finally, I added some "static" keywords to ensure that certain local
functions are not exported (that's just a paranoia change, I guess:
never pollute linker namespaces if you can avoid it).
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 17 Sep 2004 13:28:12 +0000 |
parents | 4ab6d1fd028f |
children | 8e20c48a9c13 |
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/* * Small SDL example to demonstrate dynamically loading * OpenGL lib and functions * * (FYI it was supposed to look like snow in the wind or something...) * * Compile with : * gcc testdyngl.c `sdl-config --libs --cflags` -o testdyngl -DHAVE_OPENGL * * You can specify a different OpenGL lib on the command line, i.e. : * ./testdyngl /usr/X11R6/lib/libGL.so.1.2 * or * ./testdyngl /usr/lib/libGL.so.1.0.4496 * */ #include <stdio.h> #include <stdlib.h> #include "SDL.h" #ifdef HAVE_OPENGL #include "SDL_opengl.h" void* get_funcaddr(const char* p) { void* f=SDL_GL_GetProcAddress(p); if (f) { return f; } else { printf("Unable to get function pointer for %s\n",p); exit(1); } } typedef struct { void(APIENTRY*glBegin)(GLenum); void(APIENTRY*glEnd)(); void(APIENTRY*glVertex3f)(GLfloat, GLfloat, GLfloat); void(APIENTRY*glClearColor)(GLfloat, GLfloat, GLfloat, GLfloat); void(APIENTRY*glClear)(GLbitfield); void(APIENTRY*glDisable)(GLenum); void(APIENTRY*glEnable)(GLenum); void(APIENTRY*glColor4ub)(GLubyte,GLubyte,GLubyte,GLubyte); void(APIENTRY*glPointSize)(GLfloat); void(APIENTRY*glHint)(GLenum,GLenum); void(APIENTRY*glBlendFunc)(GLenum,GLenum); void(APIENTRY*glMatrixMode)(GLenum); void(APIENTRY*glLoadIdentity)(); void(APIENTRY*glOrtho)(GLdouble,GLdouble,GLdouble,GLdouble,GLdouble,GLdouble); void(APIENTRY*glRotatef)(GLfloat,GLfloat,GLfloat,GLfloat); void(APIENTRY*glViewport)(GLint,GLint,GLsizei,GLsizei); void(APIENTRY*glFogf)(GLenum,GLfloat); } glfuncs; void init_glfuncs(glfuncs* f) { f->glBegin=get_funcaddr("glBegin"); f->glEnd=get_funcaddr("glEnd"); f->glVertex3f=get_funcaddr("glVertex3f"); f->glClearColor=get_funcaddr("glClearColor"); f->glClear=get_funcaddr("glClear"); f->glDisable=get_funcaddr("glDisable"); f->glEnable=get_funcaddr("glEnable"); f->glColor4ub=get_funcaddr("glColor4ub"); f->glPointSize=get_funcaddr("glPointSize"); f->glHint=get_funcaddr("glHint"); f->glBlendFunc=get_funcaddr("glBlendFunc"); f->glMatrixMode=get_funcaddr("glMatrixMode"); f->glLoadIdentity=get_funcaddr("glLoadIdentity"); f->glOrtho=get_funcaddr("glOrtho"); f->glRotatef=get_funcaddr("glRotatef"); f->glViewport=get_funcaddr("glViewport"); f->glFogf=get_funcaddr("glFogf"); } #define NB_PIXELS 1000 int main(int argc,char *argv[]) { glfuncs f; int i; SDL_Event event; int done=0; GLfloat pixels[NB_PIXELS*3]; #if defined(_WIN32) char *gl_library = "OpenGL32.DLL"; #elif defined(__QNXNTO__) char *gl_library = "libGL.so.3"; #else char *gl_library = "libGL.so.1"; #endif if (argv[1]) { gl_library = argv[1]; } if (SDL_Init(SDL_INIT_VIDEO)<0) { printf("Unable to init SDL : %s\n",SDL_GetError()); exit(1); } if (SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER,1)<0) { printf("Unable to set GL attribute : %s\n",SDL_GetError()); exit(1); } if (SDL_GL_LoadLibrary(gl_library)<0) { printf("Unable to dynamically open GL lib : %s\n",SDL_GetError()); exit(1); } if (SDL_SetVideoMode(640,480,0,SDL_OPENGL)==NULL) { printf("Unable to open video mode : %s\n",SDL_GetError()); exit(1); } /* Set the window manager title bar */ SDL_WM_SetCaption( "SDL Dynamic OpenGL Loading Test", "testdyngl" ); init_glfuncs(&f); for(i=0;i<NB_PIXELS;i++) { pixels[3*i]=rand()%250-125; pixels[3*i+1]=rand()%250-125; pixels[3*i+2]=rand()%250-125; } f.glViewport(0,0,640,480); f.glMatrixMode(GL_PROJECTION); f.glLoadIdentity(); f.glOrtho(-100,100,-100,100,-500,500); f.glMatrixMode(GL_MODELVIEW); f.glLoadIdentity(); f.glEnable(GL_DEPTH_TEST); f.glDisable(GL_TEXTURE_2D); f.glEnable(GL_BLEND); f.glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); f.glClearColor(0.0f,0.0f,0.0f,0.0f); f.glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); f.glEnable(GL_POINT_SMOOTH); f.glHint(GL_POINT_SMOOTH_HINT,GL_NICEST); f.glPointSize(5.0f); f.glEnable(GL_FOG); f.glFogf(GL_FOG_START,-500); f.glFogf(GL_FOG_END,500); f.glFogf(GL_FOG_DENSITY,0.005); do { f.glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); f.glRotatef(2.0,1.0,1.0,1.0); f.glRotatef(1.0,0.0,1.0,1.0); f.glColor4ub(255,255,255,255); f.glBegin(GL_POINTS); for(i=0;i<NB_PIXELS;i++) { f.glVertex3f(pixels[3*i],pixels[3*i+1],pixels[3*i+2]); } f.glEnd(); SDL_GL_SwapBuffers(); while(SDL_PollEvent(&event)) { if(event.type & SDL_KEYDOWN) done=1; } SDL_Delay(20); } while(!done); SDL_Quit(); return 0; } #else /* HAVE_OPENGL */ int main(int argc, char *argv[]) { printf("No OpenGL support on this system\n"); return 1; } #endif /* HAVE_OPENGL */