void Window_InitializeVideo(void)
{
int iFlags =
SDL_WINDOW_SHOWN |
SDL_WINDOW_OPENGL |
SDL_WINDOW_FULLSCREEN;
SDL_Surface *sIcon;
// [28/7/2013] Moved check here and corrected, seems more secure ~hogsy
if (SDL_VideoInit(NULL) < 0)
Sys_Error("Failed to initialize video!\n%s\n", SDL_GetError());
SDL_DisableScreenSaver();
// Get display information.
if (SDL_GetCurrentDisplayMode(0, &sDisplayMode) != 0)
Sys_Error("Failed to get current display information!\n%s\n", SDL_GetError());
if (!Video.fullscreen)
iFlags &= ~SDL_WINDOW_FULLSCREEN;
#if 0
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
#endif
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ACCUM_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ACCUM_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ACCUM_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ACCUM_ALPHA_SIZE, 8);
#if 0
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 8);
#endif
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
sMainWindow = SDL_CreateWindow(
Game->Name, // [9/7/2013] Window name is based on the name given by Game ~hogsy
SDL_WINDOWPOS_CENTERED,
SDL_WINDOWPOS_CENTERED,
Video.iWidth,
Video.iHeight,
iFlags);
if (!sMainWindow)
Sys_Error("Failed to create window!\n%s\n", SDL_GetError());
// Attempt to grab the window icon from the game directory.
sIcon = SDL_LoadBMP(va("%s/icon.bmp", com_gamedir));
if (sIcon)
{
// [25/3/2014] Set the transparency key... ~hogsy
SDL_SetColorKey(sIcon, true, SDL_MapRGB(sIcon->format, 0, 0, 0));
SDL_SetWindowIcon(sMainWindow, sIcon);
SDL_FreeSurface(sIcon);
}
else
// Give us a warning, but continue.
Con_Warning("Failed to load window icon! (%s)\n", SDL_GetError());
sMainContext = SDL_GL_CreateContext(sMainWindow);
if (!sMainContext)
Sys_Error("Failed to create context!\n%s\n", SDL_GetError());
SDL_GL_SetSwapInterval(0);
#ifdef _WIN32
if (SDL_GetWindowWMInfo(sMainWindow, &sSystemInfo))
g_mainwindow.instance = sSystemInfo.info.win.window;
else
Con_Warning("Failed to get WM information! (%s)\n", SDL_GetError());
#endif
}
int SDL_InitSubSystem(Uint32 flags)
{
#if !SDL_VIDEO_DISABLED
/* Initialize the video/event subsystem */
if ( (flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO) ) {
if ( SDL_VideoInit(SDL_getenv("SDL_VIDEODRIVER"),
(flags&SDL_INIT_EVENTTHREAD)) < 0 ) {
return(-1);
}
SDL_initialized |= SDL_INIT_VIDEO;
}
#else
if ( flags & SDL_INIT_VIDEO ) {
SDL_SetError("SDL not built with video support");
return(-1);
}
#endif
#if !SDL_AUDIO_DISABLED
/* Initialize the audio subsystem */
if ( (flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO) ) {
if ( SDL_AudioInit(SDL_getenv("SDL_AUDIODRIVER")) < 0 ) {
return(-1);
}
SDL_initialized |= SDL_INIT_AUDIO;
}
#else
if ( flags & SDL_INIT_AUDIO ) {
SDL_SetError("SDL not built with audio support");
return(-1);
}
#endif
#if !SDL_TIMERS_DISABLED
/* Initialize the timer subsystem */
if ( ! ticks_started ) {
SDL_StartTicks();
ticks_started = 1;
}
if ( (flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER) ) {
if ( SDL_TimerInit() < 0 ) {
return(-1);
}
SDL_initialized |= SDL_INIT_TIMER;
}
#else
if ( flags & SDL_INIT_TIMER ) {
SDL_SetError("SDL not built with timer support");
return(-1);
}
#endif
#if !SDL_JOYSTICK_DISABLED
/* Initialize the joystick subsystem */
if ( (flags & SDL_INIT_JOYSTICK) &&
!(SDL_initialized & SDL_INIT_JOYSTICK) ) {
if ( SDL_JoystickInit() < 0 ) {
return(-1);
}
SDL_initialized |= SDL_INIT_JOYSTICK;
}
#else
if ( flags & SDL_INIT_JOYSTICK ) {
SDL_SetError("SDL not built with joystick support");
return(-1);
}
#endif
#if !SDL_CDROM_DISABLED
/* Initialize the CD-ROM subsystem */
if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) {
if ( SDL_CDROMInit() < 0 ) {
return(-1);
}
SDL_initialized |= SDL_INIT_CDROM;
}
#else
if ( flags & SDL_INIT_CDROM ) {
SDL_SetError("SDL not built with cdrom support");
return(-1);
}
#endif
return(0);
}
int
SDL_InitSubSystem(Uint32 flags)
{
if (!SDL_MainIsReady) {
SDL_SetError("Application didn't initialize properly, did you include SDL_main.h in the file containing your main() function?");
return -1;
}
/* Clear the error message */
SDL_ClearError();
#if SDL_VIDEO_DRIVER_WINDOWS
if ((flags & (SDL_INIT_HAPTIC|SDL_INIT_JOYSTICK))) {
if (SDL_HelperWindowCreate() < 0) {
return -1;
}
}
#endif
#if !SDL_TIMERS_DISABLED
SDL_TicksInit();
#endif
if ((flags & SDL_INIT_GAMECONTROLLER)) {
/* game controller implies joystick */
flags |= SDL_INIT_JOYSTICK;
}
if ((flags & (SDL_INIT_VIDEO|SDL_INIT_JOYSTICK))) {
/* video or joystick implies events */
flags |= SDL_INIT_EVENTS;
}
/* Initialize the event subsystem */
if ((flags & SDL_INIT_EVENTS)) {
#if !SDL_EVENTS_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_EVENTS)) {
if (SDL_StartEventLoop() < 0) {
return (-1);
}
SDL_QuitInit();
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_EVENTS);
#else
return SDL_SetError("SDL not built with events support");
#endif
}
/* Initialize the timer subsystem */
if ((flags & SDL_INIT_TIMER)){
#if !SDL_TIMERS_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_TIMER)) {
if (SDL_TimerInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_TIMER);
#else
return SDL_SetError("SDL not built with timer support");
#endif
}
/* Initialize the video subsystem */
if ((flags & SDL_INIT_VIDEO)){
#if !SDL_VIDEO_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_VIDEO)) {
if (SDL_VideoInit(NULL) < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_VIDEO);
#else
return SDL_SetError("SDL not built with video support");
#endif
}
/* Initialize the audio subsystem */
if ((flags & SDL_INIT_AUDIO)){
#if !SDL_AUDIO_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_AUDIO)) {
if (SDL_AudioInit(NULL) < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_AUDIO);
#else
return SDL_SetError("SDL not built with audio support");
#endif
}
/* Initialize the joystick subsystem */
if ((flags & SDL_INIT_JOYSTICK)){
#if !SDL_JOYSTICK_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_JOYSTICK)) {
if (SDL_JoystickInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_JOYSTICK);
#else
return SDL_SetError("SDL not built with joystick support");
#endif
}
if ((flags & SDL_INIT_GAMECONTROLLER)){
#if !SDL_JOYSTICK_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_GAMECONTROLLER)) {
if (SDL_GameControllerInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_GAMECONTROLLER);
#else
return SDL_SetError("SDL not built with joystick support");
#endif
}
/* Initialize the haptic subsystem */
if ((flags & SDL_INIT_HAPTIC)){
#if !SDL_HAPTIC_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_HAPTIC)) {
if (SDL_HapticInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_HAPTIC);
#else
return SDL_SetError("SDL not built with haptic (force feedback) support");
#endif
}
return (0);
}
int audio_Init(void (*samplecallback)(void*, unsigned int),
unsigned int buffersize, const char* backend, int s16, char** error) {
#ifndef USE_SDL_GRAPHICS
if (!sdlvideoinit) {
if (SDL_VideoInit(NULL) < 0) {
char errormsg[512];
snprintf(errormsg,sizeof(errormsg), "Failed to initialize SDL video: %s", SDL_GetError());
errormsg[sizeof(errormsg)-1] = 0;
*error = strdup(errormsg);
return 0;
}
sdlvideoinit = 1;
}
#endif
if (soundenabled) {
// quit old sound first
SDL_PauseAudio(1);
SDL_AudioQuit();
soundenabled = 0;
}
#ifdef ANDROID
if (!s16) {
*error = strdup("No 32bit float audio available on Android");
return 0;
}
#endif
if (!samplecallback) {
*error = strdup("Need sample callback");
return 0;
}
char errbuf[512];
char preferredbackend[20] = "";
#ifdef WINDOWS
if (backend && strcasecmp(backend, "waveout") == 0) {
strcpy(preferredbackend, "waveout");
}
if (backend && (strcasecmp(backend, "directsound") == 0 || strcasecmp(backend, "dsound") == 0)) {
strcpy(preferredbackend, "directsound");
}
#else
#ifdef LINUX
if (backend && strcasecmp(backend, "alsa") == 0) {
strcpy(preferredbackend, "alsa");
}
if (backend && (strcasecmp(backend, "oss") == 0 || strcasecmp(backend, "dsp") == 0)) {
strcpy(preferredbackend, "dsp");
}
#endif
#endif
const char* b = preferredbackend;
if (strlen(b) <= 0) {
b = NULL;
}
if (SDL_AudioInit(b) < 0) {
snprintf(errbuf,sizeof(errbuf),"Failed to initialize SDL audio: %s", SDL_GetError());
errbuf[sizeof(errbuf)-1] = 0;
*error = strdup(errbuf);
return 0;
}
SDL_AudioSpec fmt,actualfmt;
int custombuffersize = DEFAULTSOUNDBUFFERSIZE;
if (buffersize > 0) {
if (buffersize < MINSOUNDBUFFERSIZE) {
buffersize = MINSOUNDBUFFERSIZE;
}
if (buffersize > MAXSOUNDBUFFERSIZE) {
buffersize = MAXSOUNDBUFFERSIZE;
}
custombuffersize = buffersize;
}
memset(&fmt,0,sizeof(fmt));
fmt.freq = 48000;
if (!s16) {
fmt.format = AUDIO_F32SYS;
}else{
fmt.format = AUDIO_S16;
}
fmt.channels = 2;
fmt.samples = custombuffersize;
fmt.callback = audiocallback;
fmt.userdata = NULL;
samplecallbackptr = samplecallback;
if (SDL_OpenAudio(&fmt, &actualfmt) < 0) {
snprintf(errbuf,sizeof(errbuf),"Failed to open SDL audio: %s", SDL_GetError());
errbuf[sizeof(errbuf)-1] = 0;
*error = strdup(errbuf);
// FIXME: this is a workaround for http:// bugzilla.libsdl.org/show_bug.cgi?id=1343 (will cause a memory leak!)
// SDL_AudioQuit();
return 0;
}
if (actualfmt.channels != 2 || actualfmt.freq != 48000 || (s16 && actualfmt.format != AUDIO_S16) || (!s16 && actualfmt.format != AUDIO_F32SYS)) {
*error = strdup("SDL audio delivered wrong/unusable format");
// FIXME: this is a workaround for http:// bugzilla.libsdl.org/show_bug.cgi?id=1343 (will cause a memory leak!)
// SDL_AudioQuit();
return 0;
}
soundenabled = 1;
SDL_PauseAudio(0);
return 1;
}
int
SDL_InitSubSystem(Uint32 flags)
{
#if !SDL_TIMERS_DISABLED
if (!ticks_started) {
SDL_StartTicks();
ticks_started = 1;
}
#endif
/* Initialize the timer subsystem */
if ((flags & SDL_INIT_TIMER) ){
#if !SDL_TIMERS_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_TIMER)) {
if (SDL_TimerInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_TIMER);
#else
SDL_SetError("SDL not built with timer support");
return (-1);
#endif
}
/* Initialize the video/event subsystem */
if ((flags & SDL_INIT_VIDEO) ){
#if !SDL_VIDEO_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_VIDEO)) {
if (SDL_VideoInit(NULL) < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_VIDEO);
#else
SDL_SetError("SDL not built with video support");
return (-1);
#endif
}
/* Initialize the audio subsystem */
if ((flags & SDL_INIT_AUDIO) ){
#if !SDL_AUDIO_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_AUDIO)) {
if (SDL_AudioInit(NULL) < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_AUDIO);
#else
SDL_SetError("SDL not built with audio support");
return (-1);
#endif
}
if ((flags & SDL_INIT_GAMECONTROLLER)) {
// Game controller implies Joystick.
flags |= SDL_INIT_JOYSTICK;
}
/* Initialize the joystick subsystem */
if ((flags & SDL_INIT_JOYSTICK) ){
#if !SDL_JOYSTICK_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_JOYSTICK)) {
if (SDL_JoystickInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_JOYSTICK);
#else
SDL_SetError("SDL not built with joystick support");
return (-1);
#endif
}
if ((flags & SDL_INIT_GAMECONTROLLER) ){
#if !SDL_JOYSTICK_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_GAMECONTROLLER)) {
if (SDL_GameControllerInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_GAMECONTROLLER);
#else
SDL_SetError("SDL not built with joystick support");
return (-1);
#endif
}
/* Initialize the haptic subsystem */
if ((flags & SDL_INIT_HAPTIC) ){
#if !SDL_HAPTIC_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_HAPTIC)) {
if (SDL_HapticInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_HAPTIC);
#else
SDL_SetError("SDL not built with haptic (force feedback) support");
return (-1);
#endif
}
return (0);
}
bool ZL_CreateWindow(const char* windowtitle, int width, int height, int displayflags)
{
#if (defined(_MSC_VER) && !defined(WINAPI_FAMILY))
//if compiler errors, enum ZL_WindowFlags does not map to enum SDL_WindowFlags
enum { __asrt = 1/(int)(ZL_WINDOW_FULLSCREEN==SDL_WINDOW_FULLSCREEN&&ZL_WINDOW_MINIMIZED==SDL_WINDOW_MINIMIZED&&ZL_WINDOW_RESIZABLE==SDL_WINDOW_RESIZABLE) };
#endif
Uint32 windowflags = SDL_WINDOW_OPENGL; // | SDL_WINDOW_SHOWN;
if (displayflags & ZL_DISPLAY_FULLSCREEN) windowflags |= SDL_WINDOW_FULLSCREEN;
if (displayflags & ZL_DISPLAY_RESIZABLE) windowflags |= SDL_WINDOW_RESIZABLE;
if (SDL_VideoInit(NULL) < 0) { ZL_SDL_ShowError("Could not initialize video display"); return false; }
//limit window size to desktop resolution of primary display (if data can be acquired via SDL)
SDL_DisplayMode DesktopMode = { 0, 0, 0, 0, 0 };
SDL_GetDesktopDisplayMode(0, &DesktopMode);
if (DesktopMode.w)
{
if (DesktopMode.w > 500 && width > DesktopMode.w) width = DesktopMode.w;
if (DesktopMode.h > 400 && height > DesktopMode.h) height = DesktopMode.h;
}
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, (displayflags & ZL_DISPLAY_DEPTHBUFFER ? 16 : 0));
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
// should enable 4x AA if possible
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4);
//SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
//SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
ZL_SDL_Window = SDL_CreateWindow(windowtitle, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, width, height, windowflags);
if (!ZL_SDL_Window)
{
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 0);
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 0);
ZL_SDL_Window = SDL_CreateWindow(windowtitle, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, width, height, windowflags);
if (!ZL_SDL_Window) { ZL_SDL_ShowError("Could not create OpenGL window"); return false; }
}
if (!SDL_GL_CreateContext(ZL_SDL_Window)) { ZL_SDL_ShowError("Could not initialize OpenGL context"); return false; }
glClear(GL_COLOR_BUFFER_BIT);
SDL_GL_SwapWindow(ZL_SDL_Window);
if (ZL_Requested_FPS < 0)
ZL_MainApplication->SetFpsLimit(DesktopMode.refresh_rate > 0 ? (unsigned short)DesktopMode.refresh_rate : 60);
else
ZL_UpdateTPFLimit();
//const GLubyte* pstrGlVendor = glGetString(GL_VENDOR);
//if (pstrGlVendor[0] == 'A' && pstrGlVendor[1] == 'T' && pstrGlVendor[2] == 'I') ZL_MainApplicationFlags |= ZL_APPLICATION_VSYNCHACK;
//printf("Vendor: %s\n", glGetString(GL_VENDOR));
//printf("Renderer: %s\n", glGetString(GL_RENDERER));
//printf("Version: %s\n", glGetString(GL_VERSION));
//printf("GLSL: %s\n", glGetString(GL_SHADING_LANGUAGE_VERSION));
//printf("Extensions : %s\n", glGetString(GL_EXTENSIONS));
//printf("\n");
InitExtensionEntries();
/*
#ifndef __MACOSX__
printf("glDeleteBuffers = %d\n", (glDeleteBuffers ? 1 : 0));
printf("glCreateShader = %d\n", (glCreateShader ? 1 : 0));
printf("glCompileShader = %d\n", (glCompileShader ? 1 : 0));
printf("glCreateProgram = %d\n", (glCreateProgram ? 1 : 0));
printf("glLinkProgram = %d\n", (glLinkProgram ? 1 : 0));
printf("glUseProgram = %d\n", (glUseProgram ? 1 : 0));
printf("glBindAttribLocation = %d\n", (glBindAttribLocation ? 1 : 0));
printf("glVertexAttribPointer = %d\n", (glVertexAttribPointer ? 1 : 0));
printf("glVertexAttrib4fv = %d\n", (glVertexAttrib4fv ? 1 : 0));
printf("glUniform1f = %d\n", (glUniform1f ? 1 : 0));
printf("glIsProgram = %d\n", (glIsProgram ? 1 : 0));
#if !defined(ZL_DOUBLE_PRECISCION)
printf("glUniformMatrix4fv = %d\n", (glUniformMatrix4fv ? 1 : 0));
#else
#endif
#ifndef GL_ATI_blend_equation_separate
printf("glBlendEquation = %d\n", (glBlendEquation ? 1 : 0));
#endif
#endif
printf("glGenFramebuffers = %d\n", (glGenFramebuffers ? 1 : 0));
printf("glDeleteFramebuffers = %d\n", (glDeleteFramebuffers ? 1 : 0));
printf("glBindFramebuffer = %d\n", (glBindFramebuffer ? 1 : 0));
printf("glFramebufferTexture2D = %d\n", (glFramebufferTexture2D? 1 : 0));
printf("\n");
*/
pZL_WindowFlags = (unsigned int*)&ZL_SDL_Window->flags;
return true;
}
SDL_bool
CommonInit(CommonState * state)
{
int i, j, m, n;
SDL_DisplayMode fullscreen_mode;
if (state->flags & SDL_INIT_VIDEO) {
if (state->verbose & VERBOSE_VIDEO) {
n = SDL_GetNumVideoDrivers();
if (n == 0) {
fprintf(stderr, "No built-in video drivers\n");
} else {
fprintf(stderr, "Built-in video drivers:");
for (i = 0; i < n; ++i) {
if (i > 0) {
fprintf(stderr, ",");
}
fprintf(stderr, " %s", SDL_GetVideoDriver(i));
}
fprintf(stderr, "\n");
}
}
if (SDL_VideoInit(state->videodriver, 0) < 0) {
fprintf(stderr, "Couldn't initialize video driver: %s\n",
SDL_GetError());
return SDL_FALSE;
}
if (state->verbose & VERBOSE_VIDEO) {
fprintf(stderr, "Video driver: %s\n",
SDL_GetCurrentVideoDriver());
}
/* Upload GL settings */
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, state->gl_red_size);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, state->gl_green_size);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, state->gl_blue_size);
SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, state->gl_alpha_size);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, state->gl_double_buffer);
SDL_GL_SetAttribute(SDL_GL_BUFFER_SIZE, state->gl_buffer_size);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, state->gl_depth_size);
SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, state->gl_stencil_size);
SDL_GL_SetAttribute(SDL_GL_ACCUM_RED_SIZE, state->gl_accum_red_size);
SDL_GL_SetAttribute(SDL_GL_ACCUM_GREEN_SIZE, state->gl_accum_green_size);
SDL_GL_SetAttribute(SDL_GL_ACCUM_BLUE_SIZE, state->gl_accum_blue_size);
SDL_GL_SetAttribute(SDL_GL_ACCUM_ALPHA_SIZE, state->gl_accum_alpha_size);
SDL_GL_SetAttribute(SDL_GL_STEREO, state->gl_stereo);
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, state->gl_multisamplebuffers);
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, state->gl_multisamplesamples);
if (state->gl_accelerated >= 0) {
SDL_GL_SetAttribute(SDL_GL_ACCELERATED_VISUAL,
state->gl_accelerated);
}
SDL_GL_SetAttribute(SDL_GL_RETAINED_BACKING, state->gl_retained_backing);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, state->gl_major_version);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, state->gl_minor_version);
if (state->verbose & VERBOSE_MODES) {
SDL_DisplayMode mode;
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
n = SDL_GetNumVideoDisplays();
fprintf(stderr, "Number of displays: %d\n", n);
for (i = 0; i < n; ++i) {
fprintf(stderr, "Display %d:\n", i);
SDL_SelectVideoDisplay(i);
SDL_GetDesktopDisplayMode(&mode);
SDL_PixelFormatEnumToMasks(mode.format, &bpp, &Rmask, &Gmask,
&Bmask, &Amask);
fprintf(stderr,
" Current mode: %dx%d@%dHz, %d bits-per-pixel (%s)\n",
mode.w, mode.h, mode.refresh_rate, bpp,
PixelFormatToString(mode.format));
if (Rmask || Gmask || Bmask) {
fprintf(stderr, " Red Mask = 0x%.8x\n", Rmask);
fprintf(stderr, " Green Mask = 0x%.8x\n", Gmask);
fprintf(stderr, " Blue Mask = 0x%.8x\n", Bmask);
if (Amask)
fprintf(stderr, " Alpha Mask = 0x%.8x\n", Amask);
}
/* Print available fullscreen video modes */
m = SDL_GetNumDisplayModes();
if (m == 0) {
fprintf(stderr, "No available fullscreen video modes\n");
} else {
fprintf(stderr, " Fullscreen video modes:\n");
for (j = 0; j < m; ++j) {
SDL_GetDisplayMode(j, &mode);
SDL_PixelFormatEnumToMasks(mode.format, &bpp, &Rmask,
&Gmask, &Bmask, &Amask);
fprintf(stderr,
" Mode %d: %dx%d@%dHz, %d bits-per-pixel (%s)\n",
j, mode.w, mode.h, mode.refresh_rate, bpp,
PixelFormatToString(mode.format));
if (Rmask || Gmask || Bmask) {
fprintf(stderr, " Red Mask = 0x%.8x\n",
Rmask);
fprintf(stderr, " Green Mask = 0x%.8x\n",
Gmask);
fprintf(stderr, " Blue Mask = 0x%.8x\n",
Bmask);
if (Amask)
fprintf(stderr,
" Alpha Mask = 0x%.8x\n",
Amask);
}
}
}
}
}
SDL_SelectVideoDisplay(state->display);
if (state->verbose & VERBOSE_RENDER) {
SDL_RendererInfo info;
n = SDL_GetNumRenderDrivers();
if (n == 0) {
fprintf(stderr, "No built-in render drivers\n");
} else {
fprintf(stderr, "Built-in render drivers:\n");
for (i = 0; i < n; ++i) {
SDL_GetRenderDriverInfo(i, &info);
PrintRenderer(&info);
}
}
}
SDL_zero(fullscreen_mode);
switch (state->depth) {
case 8:
fullscreen_mode.format = SDL_PIXELFORMAT_INDEX8;
break;
case 15:
fullscreen_mode.format = SDL_PIXELFORMAT_RGB555;
break;
case 16:
fullscreen_mode.format = SDL_PIXELFORMAT_RGB565;
break;
case 24:
fullscreen_mode.format = SDL_PIXELFORMAT_RGB24;
break;
default:
fullscreen_mode.format = SDL_PIXELFORMAT_RGB888;
break;
}
fullscreen_mode.refresh_rate = state->refresh_rate;
state->windows =
(SDL_Window **) SDL_malloc(state->num_windows *
sizeof(*state->windows));
if (!state->windows) {
fprintf(stderr, "Out of memory!\n");
return SDL_FALSE;
}
for (i = 0; i < state->num_windows; ++i) {
char title[1024];
if (state->num_windows > 1) {
SDL_snprintf(title, SDL_arraysize(title), "%s %d",
state->window_title, i + 1);
} else {
SDL_strlcpy(title, state->window_title, SDL_arraysize(title));
}
state->windows[i] =
SDL_CreateWindow(title, state->window_x, state->window_y,
state->window_w, state->window_h,
state->window_flags);
if (!state->windows[i]) {
fprintf(stderr, "Couldn't create window: %s\n",
SDL_GetError());
return SDL_FALSE;
}
if (SDL_SetWindowDisplayMode(state->windows[i], &fullscreen_mode) < 0) {
fprintf(stderr, "Can't set up fullscreen display mode: %s\n",
SDL_GetError());
return SDL_FALSE;
}
if (state->window_icon) {
SDL_Surface *icon = LoadIcon(state->window_icon);
if (icon) {
SDL_SetWindowIcon(state->windows[i], icon);
SDL_FreeSurface(icon);
}
}
SDL_ShowWindow(state->windows[i]);
if (!state->skip_renderer
&& (state->renderdriver
|| !(state->window_flags & SDL_WINDOW_OPENGL))) {
m = -1;
if (state->renderdriver) {
SDL_RendererInfo info;
n = SDL_GetNumRenderDrivers();
for (j = 0; j < n; ++j) {
SDL_GetRenderDriverInfo(j, &info);
if (SDL_strcasecmp(info.name, state->renderdriver) ==
0) {
m = j;
break;
}
}
if (m == n) {
fprintf(stderr,
"Couldn't find render driver named %s",
state->renderdriver);
return SDL_FALSE;
}
}
if (SDL_CreateRenderer
(state->windows[i], m, state->render_flags) < 0) {
fprintf(stderr, "Couldn't create renderer: %s\n",
SDL_GetError());
return SDL_FALSE;
}
if (state->verbose & VERBOSE_RENDER) {
SDL_RendererInfo info;
fprintf(stderr, "Current renderer:\n");
SDL_GetRendererInfo(&info);
PrintRenderer(&info);
}
}
}
SDL_SelectRenderer(state->windows[0]);
}
if (state->flags & SDL_INIT_AUDIO) {
if (state->verbose & VERBOSE_AUDIO) {
n = SDL_GetNumAudioDrivers();
if (n == 0) {
fprintf(stderr, "No built-in audio drivers\n");
} else {
fprintf(stderr, "Built-in audio drivers:");
for (i = 0; i < n; ++i) {
if (i > 0) {
fprintf(stderr, ",");
}
fprintf(stderr, " %s", SDL_GetAudioDriver(i));
}
fprintf(stderr, "\n");
}
}
if (SDL_AudioInit(state->audiodriver) < 0) {
fprintf(stderr, "Couldn't initialize audio driver: %s\n",
SDL_GetError());
return SDL_FALSE;
}
if (state->verbose & VERBOSE_VIDEO) {
fprintf(stderr, "Audio driver: %s\n",
SDL_GetCurrentAudioDriver());
}
if (SDL_OpenAudio(&state->audiospec, NULL) < 0) {
fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
return SDL_FALSE;
}
}
return SDL_TRUE;
}
int
SDL_InitSubSystem(Uint32 flags)
{
#if !SDL_VIDEO_DISABLED
/* Initialize the video/event subsystem */
if ((flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO)) {
if (SDL_VideoInit(NULL, (flags & SDL_INIT_EVENTTHREAD)) < 0) {
return (-1);
}
SDL_initialized |= SDL_INIT_VIDEO;
}
#else
if (flags & SDL_INIT_VIDEO) {
SDL_SetError("SDL not built with video support");
return (-1);
}
#endif
#if !SDL_AUDIO_DISABLED
/* Initialize the audio subsystem */
if ((flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO)) {
if (SDL_AudioInit(NULL) < 0) {
return (-1);
}
SDL_initialized |= SDL_INIT_AUDIO;
}
#else
if (flags & SDL_INIT_AUDIO) {
SDL_SetError("SDL not built with audio support");
return (-1);
}
#endif
#if !SDL_TIMERS_DISABLED
/* Initialize the timer subsystem */
if (!ticks_started) {
SDL_StartTicks();
ticks_started = 1;
}
if ((flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER)) {
if (SDL_TimerInit() < 0) {
return (-1);
}
SDL_initialized |= SDL_INIT_TIMER;
}
#else
if (flags & SDL_INIT_TIMER) {
SDL_SetError("SDL not built with timer support");
return (-1);
}
#endif
#if !SDL_JOYSTICK_DISABLED
/* Initialize the joystick subsystem */
if ((flags & SDL_INIT_JOYSTICK) && !(SDL_initialized & SDL_INIT_JOYSTICK)) {
if (SDL_JoystickInit() < 0) {
return (-1);
}
SDL_initialized |= SDL_INIT_JOYSTICK;
}
#else
if (flags & SDL_INIT_JOYSTICK) {
SDL_SetError("SDL not built with joystick support");
return (-1);
}
#endif
#if !SDL_HAPTIC_DISABLED
/* Initialize the haptic subsystem */
if ((flags & SDL_INIT_HAPTIC) && !(SDL_initialized & SDL_INIT_HAPTIC)) {
if (SDL_HapticInit() < 0) {
return (-1);
}
SDL_initialized |= SDL_INIT_HAPTIC;
}
#else
if (flags & SDL_INIT_HAPTIC) {
SDL_SetError("SDL not built with haptic (force feedback) support");
return (-1);
}
#endif
return (0);
}
int
main(int argc, char *argv[])
{
int i, done;
const char *driver;
SDL_Window *window;
SDL_Renderer *renderer;
SDL_Texture *sprite;
int window_w, window_h;
int sprite_w, sprite_h;
SDL_Event event;
/* Enable standard application logging */
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
if (SDL_VideoInit(NULL) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL video: %s\n",
SDL_GetError());
exit(1);
}
driver = SDL_GetCurrentVideoDriver();
/* Find a native window driver and create a native window */
for (i = 0; factories[i]; ++i) {
if (SDL_strcmp(driver, factories[i]->tag) == 0) {
factory = factories[i];
break;
}
}
if (!factory) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't find native window code for %s driver\n",
driver);
quit(2);
}
SDL_Log("Creating native window for %s driver\n", driver);
native_window = factory->CreateNativeWindow(WINDOW_W, WINDOW_H);
if (!native_window) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create native window\n");
quit(3);
}
window = SDL_CreateWindowFrom(native_window);
if (!window) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create SDL window: %s\n", SDL_GetError());
quit(4);
}
SDL_SetWindowTitle(window, "SDL Native Window Test");
/* Create the renderer */
renderer = SDL_CreateRenderer(window, -1, 0);
if (!renderer) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create renderer: %s\n", SDL_GetError());
quit(5);
}
/* Clear the window, load the sprite and go! */
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
SDL_RenderClear(renderer);
sprite = LoadSprite(renderer, "icon.bmp");
if (!sprite) {
quit(6);
}
/* Allocate memory for the sprite info */
SDL_GetWindowSize(window, &window_w, &window_h);
SDL_QueryTexture(sprite, NULL, NULL, &sprite_w, &sprite_h);
positions = (SDL_Rect *) SDL_malloc(NUM_SPRITES * sizeof(SDL_Rect));
velocities = (SDL_Rect *) SDL_malloc(NUM_SPRITES * sizeof(SDL_Rect));
if (!positions || !velocities) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory!\n");
quit(2);
}
srand(time(NULL));
for (i = 0; i < NUM_SPRITES; ++i) {
positions[i].x = rand() % (window_w - sprite_w);
positions[i].y = rand() % (window_h - sprite_h);
positions[i].w = sprite_w;
positions[i].h = sprite_h;
velocities[i].x = 0;
velocities[i].y = 0;
while (!velocities[i].x && !velocities[i].y) {
velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
}
}
/* Main render loop */
done = 0;
while (!done) {
/* Check for events */
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_WINDOWEVENT:
switch (event.window.event) {
case SDL_WINDOWEVENT_EXPOSED:
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
SDL_RenderClear(renderer);
break;
}
break;
case SDL_QUIT:
done = 1;
break;
default:
break;
}
}
MoveSprites(renderer, sprite);
}
quit(0);
return 0; /* to prevent compiler warning */
}
bool initGL() {
#ifdef DEBUG_DRIVERS /************ DEBUG DRIVERS ********************************/
// Identify video drivers (this is for debug)
OUTSTREAM << "\nSDL found the following video drivers:\n";
int numdrivers = SDL_GetNumVideoDrivers();
const char* drivername;
for (int i = 0; i < numdrivers; ++i) {
drivername = SDL_GetVideoDriver(i);
if (SDL_VideoInit(drivername) == 0) {
SDL_VideoQuit();
OUTSTREAM << "\t\t Driver " << drivername << " works.\n";
}
else {
OUTSTREAM << "\t<!>\tDriver " << drivername << " DOES NOT WORK!\n";
}
}
// Identify render drivers (this is for debug)
OUTSTREAM << "SDL found the following render drivers: ";
numdrivers = SDL_GetNumRenderDrivers();
for (int i = 0; i < numdrivers; ++i) {
SDL_RendererInfo info;
SDL_GetRenderDriverInfo(i, &info);
OUTSTREAM << info.name << ((i < numdrivers - 1)? ", " : "\n");
}
#endif /************************** DEBUG DRIVERS ********************************/
// Initialize SDL overall.
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
OUTSTREAM << "<!> SDL did not initialize! SDL Error: " << SDL_GetError() << std::endl;
return false;
}
// SDL_GL_CONTEXT_CORE gives us only the newer version, deprecated functions are disabled
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
// Specify OpenGL version
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, GLVERSION_MAJOR);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, GLVERSION_MINOR);
// Turn on double buffering with a 24bit Z buffer.
// You may need to change this to 16 or 32 for your system
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
// Create the SDL window
pWindow = SDL_CreateWindow("OpenGL Window", // name of window
SDL_WINDOWPOS_CENTERED, // x position of window
SDL_WINDOWPOS_CENTERED, // y position of window
RESOLUTION_X, RESOLUTION_Y, // x and y width of window
SCREENOPTIONS); // options (fullscreen, etc)
// If the window couldn't be created for whatever reason
if (pWindow == NULL) {
OUTSTREAM << "<!> SDL window was not created! SDL Error: " << SDL_GetError() << std::endl;
return false;
}
else {
OUTSTREAM << "SDL window created.\n";
}
//Create context
context = SDL_GL_CreateContext(pWindow); //context is the place where openGL can draw
if(context == NULL) {
OUTSTREAM << "<!> OpenGL context was not created! SDL Error: " << SDL_GetError() << std::endl;
return false;
}
else {
OUTSTREAM << "GL context created.\n";
}
checkGlError(__LINE__);
//Initialize GLEW (openGL Extensions Wrangler)
glewExperimental = GL_TRUE; // Sometimes things wont work without this line
GLenum glewError = glewInit(); // GL enumerator error is thrown here when using openGL versions 3.2+ It's fine.
// see https://www.opengl.org/wiki/OpenGL_Loading_Library
if(glewError != GLEW_OK) {
OUTSTREAM << "<!> Could not initialize GLEW! " << glewGetErrorString(glewError) << std::endl;
return false;
}
else {
OUTSTREAM << "GLEW initialized.\n";
}
checkGlError(__LINE__);
#ifdef USE_VSYNC /************ USE VSYNC ********************************/
if (SDL_GL_SetSwapInterval(1) < 0) {
OUTSTREAM << "<!> Warning: Unable to set VSync! SDL Error: " << SDL_GetError() << std::endl;
// Do not return. This is not an essential functionality.
}
else {
OUTSTREAM << "VSync enabled.\n";
}
#endif /********************** USE VSYNC ********************************/
// set openGL clear color
glClearColor(CLEARCOLOR);
#ifdef USE_DEPTHBUFFER
// enable the occlusion of objects hidden behind other objects (using the depth buffer)
glEnable(GL_DEPTH_TEST);
// set the test for that occlusion to: "draw if distance of new fragment is less than or equal to old fragment"
glDepthFunc(GL_LEQUAL);
#endif
#ifdef USE_BACKFACE_CULLING
// enable the culling of back faces (back faces will not be drawn)
glEnable(GL_CULL_FACE);
#endif
#ifdef USE_TRANSPARENCY
// enable transparency
glEnable (GL_BLEND);
// set transparency function (this is standard transparency)
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
#endif
checkGlError(__LINE__);
checkSDLError(__LINE__);
return true;
}
