Mercurial > sdl-ios-xcode
view test/testdyngl.c @ 1180:bdcb8bb4c831
From: Tyler Montbriand <tsm@accesscomm.ca>
To: sdl@libsdl.org
Date: Fri, 30 Sep 2005 02:24:50 -0600
Subject: [SDL] WinCE timers, continued
Here's a strange timer for Windows CE that doesn't ignore time across
suspends. It uses GetSystemTime to keep the time continuous, and GetTicks to
get finer-grained readings than 1 second. It detects the difference between
the GetTicks time and GetSystemTime time on power-on to keep the error within
one second max.
It's not a patch on the current win32 timer code -- took one look at that and
figured it had more than enough #ifdefs already. It's windows-ce specific.
Another thing I've noticed is that the Windows CE 4.0 and newer API has
functions warn processes about suspends. This is something SDL REALLY needs
for audio in particular, because turning it off while it's playing causes
anything that uses audio to hardlock the system on power-on. Unfortunately I
don't have 4.0 to play with. :(
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Tue, 22 Nov 2005 07:10:07 +0000 |
parents | be9c9c8f6d53 |
children | 2b7e0180a72c |
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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" /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ static void quit(int rc) { SDL_Quit(); exit(rc); } 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); quit(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()); return(1); } if (SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER,1)<0) { printf("Unable to set GL attribute : %s\n",SDL_GetError()); quit(1); } if (SDL_GL_LoadLibrary(gl_library)<0) { printf("Unable to dynamically open GL lib : %s\n",SDL_GetError()); quit(1); } if (SDL_SetVideoMode(640,480,0,SDL_OPENGL)==NULL) { printf("Unable to open video mode : %s\n",SDL_GetError()); quit(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 */