grs_canvas_ptr gr_create_canvas(uint16_t w, uint16_t h)
{
grs_canvas_ptr n = make_unique<grs_main_canvas>();
unsigned char *pixdata;
MALLOC(pixdata, unsigned char, MAX_BMP_SIZE(w, h));
gr_init_canvas(*n.get(), pixdata, bm_mode::linear, w, h);
return n;
}
int gr_set_mode(u_int32_t mode)
{
unsigned int w, h;
char *gr_bm_data;
if (mode<=0)
return 0;
w=SM_W(mode);
h=SM_H(mode);
if (!gr_check_mode(mode))
{
con_printf(CON_URGENT,"Cannot set %ix%i. Fallback to 640x480\n",w,h);
w=640;
h=480;
Game_screen_mode=mode=SM(w,h);
}
gr_bm_data=(char *)grd_curscreen->sc_canvas.cv_bitmap.bm_data;//since we use realloc, we want to keep this pointer around.
memset( grd_curscreen, 0, sizeof(grs_screen));
grd_curscreen->sc_mode = mode;
grd_curscreen->sc_w = w;
grd_curscreen->sc_h = h;
grd_curscreen->sc_aspect = fixdiv(grd_curscreen->sc_w*GameCfg.AspectX,grd_curscreen->sc_h*GameCfg.AspectY);
gr_init_canvas(&grd_curscreen->sc_canvas, d_realloc(gr_bm_data,w*h), BM_OGL, w, h);
gr_set_current_canvas(NULL);
ogl_init_window(w,h);//platform specific code
ogl_get_verinfo();
OGL_VIEWPORT(0,0,w,h);
ogl_init_state();
gamefont_choose_game_font(w,h);
gr_remap_color_fonts();
gr_remap_mono_fonts();
return 0;
}