static void
SDLGL_BeginRendering(void *obj)
{
AG_DriverSDLGL *sgl = obj;
#if defined(AG_THREADS) && defined(HAVE_GETTIMEOFDAY) && \
defined(HAVE_CLOCK_GETTIME) && !defined(HAVE_CYGWIN)
{
extern AG_Cond agCondBeginRender;
/* Suspend any AG_Delay()'ed threads. */
AG_CondBroadcast(&agCondBeginRender);
}
#endif
glPushAttrib(GL_VIEWPORT_BIT|GL_TRANSFORM_BIT|GL_LIGHTING_BIT|
GL_ENABLE_BIT);
if (AGDRIVER_SW(sgl)->flags & AG_DRIVER_SW_OVERLAY) {
AG_GL_InitContext(
AG_RECT(0, 0, AGDRIVER_SW(sgl)->w, AGDRIVER_SW(sgl)->h));
} else {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
}
sgl->clipStates[0] = glIsEnabled(GL_CLIP_PLANE0);
glEnable(GL_CLIP_PLANE0);
sgl->clipStates[1] = glIsEnabled(GL_CLIP_PLANE1);
glEnable(GL_CLIP_PLANE1);
sgl->clipStates[2] = glIsEnabled(GL_CLIP_PLANE2);
glEnable(GL_CLIP_PLANE2);
sgl->clipStates[3] = glIsEnabled(GL_CLIP_PLANE3);
glEnable(GL_CLIP_PLANE3);
}
static void
SDLGL_BeginRendering(void *obj)
{
AG_DriverSDLGL *sgl = obj;
AG_GL_Context *gl = &sgl->gl;
glPushAttrib(GL_VIEWPORT_BIT|GL_TRANSFORM_BIT|GL_LIGHTING_BIT|
GL_ENABLE_BIT);
if (AGDRIVER_SW(sgl)->flags & AG_DRIVER_SW_OVERLAY) {
AG_Driver *drv = obj;
/* Reinitialize Agar's OpenGL context. */
if (drv->gl != NULL) {
AG_GL_DestroyContext(drv);
}
if (AG_GL_InitContext(drv, gl) == -1) {
AG_FatalError(NULL);
}
AG_GL_SetViewport(gl,
AG_RECT(0, 0, AGDRIVER_SW(sgl)->w, AGDRIVER_SW(sgl)->h));
} else {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
}
gl->clipStates[0] = glIsEnabled(GL_CLIP_PLANE0); glEnable(GL_CLIP_PLANE0);
gl->clipStates[1] = glIsEnabled(GL_CLIP_PLANE1); glEnable(GL_CLIP_PLANE1);
gl->clipStates[2] = glIsEnabled(GL_CLIP_PLANE2); glEnable(GL_CLIP_PLANE2);
gl->clipStates[3] = glIsEnabled(GL_CLIP_PLANE3); glEnable(GL_CLIP_PLANE3);
}
static int
SDLGL_OpenVideoContext(void *obj, void *ctx, Uint flags)
{
AG_DriverSDLGL *sgl = obj;
AG_DriverSw *dsw = obj;
AG_Driver *drv = obj;
SDL_Surface *ctxSu = (SDL_Surface *)ctx;
if (!(ctxSu->flags & SDL_OPENGL)) {
AG_SetError("Given display surface is not SDL_OPENGL");
return (-1);
}
/* Set the requested display options. */
if (flags & AG_VIDEO_OVERLAY)
dsw->flags |= AG_DRIVER_SW_OVERLAY;
if (flags & AG_VIDEO_BGPOPUPMENU)
dsw->flags |= AG_DRIVER_SW_BGPOPUP;
/* Use the given display surface. */
sgl->s = (SDL_Surface *)ctx;
if ((drv->videoFmt = AG_SDL_GetPixelFormat(sgl->s)) == NULL) {
goto fail;
}
dsw->w = sgl->s->w;
dsw->h = sgl->s->h;
dsw->depth = (Uint)drv->videoFmt->BitsPerPixel;
Verbose(_("SDLGL: Using existing display (%ux%ux%d bpp)\n"),
dsw->w, dsw->h, (int)drv->videoFmt->BitsPerPixel);
/* Initialize our OpenGL context and viewport. */
if (AG_GL_InitContext(sgl, &sgl->gl) == -1) {
goto fail;
}
AG_GL_SetViewport(&sgl->gl, AG_RECT(0, 0, dsw->w, dsw->h));
/* Create the cursors. */
if (AG_SDL_InitDefaultCursor(sgl) == -1 ||
AG_InitStockCursors(drv) == -1)
goto fail;
return (0);
fail:
if (drv->videoFmt) {
AG_PixelFormatFree(drv->videoFmt);
drv->videoFmt = NULL;
}
return (-1);
}
static int
SDLGL_OpenVideo(void *obj, Uint w, Uint h, int depth, Uint flags)
{
char buf[16];
AG_Driver *drv = obj;
AG_DriverSw *dsw = obj;
AG_DriverSDLGL *sgl = obj;
Uint32 sFlags = SDL_OPENGL;
int newDepth;
/* Set the requested display options. */
if (flags & AG_VIDEO_RESIZABLE) { sFlags |= SDL_RESIZABLE; }
if (flags & AG_VIDEO_ANYFORMAT) { sFlags |= SDL_ANYFORMAT; }
if (flags & AG_VIDEO_HWPALETTE) { sFlags |= SDL_HWPALETTE; }
if (flags & AG_VIDEO_DOUBLEBUF) { sFlags |= SDL_DOUBLEBUF; }
if (flags & AG_VIDEO_FULLSCREEN) { sFlags |= SDL_FULLSCREEN; }
if (flags & AG_VIDEO_NOFRAME) { sFlags |= SDL_NOFRAME; }
if (flags & AG_VIDEO_OVERLAY)
dsw->flags |= AG_DRIVER_SW_OVERLAY;
if (flags & AG_VIDEO_BGPOPUPMENU)
dsw->flags |= AG_DRIVER_SW_BGPOPUP;
/* Apply the output capture settings. */
if (AG_Defined(drv, "out")) {
char *ext;
AG_GetString(drv, "out", buf, sizeof(buf));
if ((ext = strrchr(buf, '.')) != NULL &&
ext[1] != '\0') {
if (Strcasecmp(&ext[1], "jpeg") == 0 ||
Strcasecmp(&ext[1], "jpg") == 0) {
sgl->outMode = AG_SDLGL_OUT_JPEG;
if ((sgl->outPath = TryStrdup(buf)) == NULL)
return (-1);
} else if (Strcasecmp(&ext[1], "png") == 0) {
sgl->outMode = AG_SDLGL_OUT_PNG;
if ((sgl->outPath = TryStrdup(buf)) == NULL)
return (-1);
} else {
AG_SetError("Invalid out= argument: `%s'", buf);
return (-1);
}
if (AG_Defined(drv, "outFirst")) {
AG_GetString(drv, "outFirst", buf, sizeof(buf));
sgl->outFrame = atoi(buf);
} else {
sgl->outFrame = 0;
}
if (AG_Defined(drv, "outLast")) {
AG_GetString(drv, "outLast", buf, sizeof(buf));
sgl->outLast = atoi(buf);
}
}
}
/* Apply the default resolution settings. */
if (w == 0 && AG_Defined(drv, "width")) {
AG_GetString(drv, "width", buf, sizeof(buf));
w = atoi(buf);
}
if (h == 0 && AG_Defined(drv, "height")) {
AG_GetString(drv, "height", buf, sizeof(buf));
h = atoi(buf);
}
if (depth == 0 && AG_Defined(drv, "depth")) {
AG_GetString(drv, "depth", buf, sizeof(buf));
depth = atoi(buf);
}
/* Set the video mode. Force hardware palette in 8bpp. */
Verbose(_("SDLGL: Setting mode %dx%d (%d bpp)\n"), w, h, depth);
newDepth = SDL_VideoModeOK(w, h, depth, sFlags);
if (newDepth == 8) {
Verbose(_("Enabling hardware palette"));
sFlags |= SDL_HWPALETTE;
}
if ((sgl->s = SDL_SetVideoMode((int)w, (int)h, newDepth, sFlags))
== NULL) {
AG_SetError("Setting %dx%dx%d mode: %s", w, h, newDepth,
SDL_GetError());
return (-1);
}
SDL_EnableUNICODE(1);
if ((drv->videoFmt = AG_SDL_GetPixelFormat(sgl->s)) == NULL) {
goto fail;
}
dsw->w = sgl->s->w;
dsw->h = sgl->s->h;
dsw->depth = (Uint)drv->videoFmt->BitsPerPixel;
Verbose(_("SDLGL: New display (%dbpp)\n"),
(int)drv->videoFmt->BitsPerPixel);
/* Initialize clipping rectangles. */
if (InitClipRects(sgl, dsw->w, dsw->h) == -1)
goto fail;
/* Create the cursors. */
if (AG_SDL_InitDefaultCursor(sgl) == -1 ||
AG_InitStockCursors(drv) == -1)
goto fail;
/* Initialize the GL viewport. */
AG_GL_InitContext(
AG_RECT(0, 0, AGDRIVER_SW(sgl)->w, AGDRIVER_SW(sgl)->h));
if (!(dsw->flags & AG_DRIVER_SW_OVERLAY)) {
ClearBackground();
}
/* Initialize the output capture buffer. */
Free(sgl->outBuf);
if ((sgl->outBuf = AG_TryMalloc(dsw->w*dsw->h*4)) == NULL) {
AG_Verbose("Out of memory for buffer; disabling capture\n");
sgl->outMode = AG_SDLGL_OUT_NONE;
}
/* Toggle fullscreen if requested. */
if (AG_CfgBool("view.full-screen")) {
if (!SDL_WM_ToggleFullScreen(sgl->s))
AG_SetCfgBool("view.full-screen", 0);
}
return (0);
fail:
if (drv->videoFmt) {
AG_PixelFormatFree(drv->videoFmt);
drv->videoFmt = NULL;
}
return (-1);
}
int
main(int argc, char *argv[])
{
#ifdef HAVE_SDL
AG_Window *win;
SDL_Surface *screen, *bmp, *tex1, *tex2, *avatar;
AG_Surface *agbmp, *agavatar;
int c, useGL = 0;
Uint32 sdlFlags = 0;
char *optArg;
Uint32 rmask, gmask, bmask, amask;
if (AG_InitCore("agar-sdl-demo", 0) == -1) {
fprintf(stderr, "AG_InitCore: %s\n", AG_GetError());
goto fail;
}
while ((c = AG_Getopt(argc, argv, "?g", &optArg, NULL)) != -1) {
switch (c) {
case 'g':
useGL = 1;
break;
default:
printf("Usage: %s [-g]\n", agProgName);
break;
}
}
/* Set up SDL */
if (SDL_Init(SDL_INIT_VIDEO) == -1) {
fprintf(stderr, "SDL_Init: %s\n", SDL_GetError());
return (1);
}
if (useGL) {
sdlFlags = SDL_RESIZABLE|SDL_OPENGL;
} else {
sdlFlags = SDL_RESIZABLE|SDL_SWSURFACE;
}
if ((screen = SDL_SetVideoMode(320, 240, 32, sdlFlags)) == NULL) {
fprintf(stderr, "SDL_SetVideoMode: %s\n", SDL_GetError());
goto fail;
}
if (useGL) {
/* Set up OpenGL viewport and projection. */
AG_GL_InitContext(AG_RECT(0,0,320,240));
}
/* Initialize Agar-GUI to reuse display */
if (AG_InitVideoSDL(screen, 0) == -1) {
fprintf(stderr, "%s\n", AG_GetError());
AG_Destroy();
goto fail;
}
AG_BindGlobalKey(AG_KEY_ESCAPE, AG_KEYMOD_ANY, AG_QuitGUI);
/* Display some test widgets. */
win = AG_WindowNew(AG_WINDOW_PLAIN);
AG_LabelNew(win, 0, "Attached to existing %s display",
useGL ? "SDL/OpenGL" : "SDL");
/* Test conversion from SDL_Surface to AG_Surface. */
if ((bmp = SDL_LoadBMP("agar.bmp")) != NULL) {
if ((agbmp = AG_SurfaceFromSDL(bmp)) != NULL) {
AG_PixmapFromSurface(win, 0, agbmp);
} else {
AG_LabelNewS(win, 0, AG_GetError());
}
}
#ifdef HAVE_SDL_IMAGE
if ((tex1 = IMG_Load("test1.png")) == NULL ||
(tex2 = IMG_Load("test2.png")) == NULL) {
fprintf(stderr, "IMG_Load() failed\n");
goto fail;
}
# if SDL_BYTEORDER == SDL_BIG_ENDIAN
rmask = 0xff000000;
gmask = 0x00ff0000;
bmask = 0x0000ff00;
amask = 0x000000ff;
# else
rmask = 0x000000ff;
gmask = 0x0000ff00;
bmask = 0x00ff0000;
amask = 0xff000000;
# endif
avatar = SDL_CreateRGBSurface(SDL_SWSURFACE|SDL_SRCALPHA, 64, 128,
tex1->format->BitsPerPixel, rmask, gmask, bmask, amask);
SDL_SetAlpha(tex1, 0, 0);
SDL_BlitSurface(tex1, NULL, avatar, NULL);
SDL_SetAlpha(tex2, SDL_SRCALPHA, 0);
SDL_BlitSurface(tex2, NULL, avatar, NULL);
if ((agavatar = AG_SurfaceFromSDL(avatar)) != NULL) {
AG_PixmapFromSurface(win, 0, agavatar);
} else {
AG_LabelNewS(win, 0, AG_GetError());
}
#endif /* HAVE_SDL_IMAGE */
AG_WindowShow(win);
AG_EventLoop();
AG_Destroy();
SDL_Quit();
return (0);
fail:
SDL_Quit();
return (1);
#else
fprintf(stderr, "Agar was compiled without SDL support\n");
return (1);
#endif /* HAVE_SDL */
}
