/*
* This file is part of the DXX-Rebirth project .
* It is copyright by its individual contributors, as recorded in the
* project's Git history. See COPYING.txt at the top level for license
* terms and a link to the Git history.
*/
/*
*
* SDL video functions.
*
*/
#include
#include
#include
#include
#include
#include "gr.h"
#include "grdef.h"
#include "palette.h"
#include "u_mem.h"
#include "dxxerror.h"
#include "vers_id.h"
#include "gamefont.h"
#include "args.h"
#include "config.h"
#include "palette.h"
#include "compiler-make_unique.h"
int sdl_video_flags = SDL_SWSURFACE | SDL_HWPALETTE | SDL_DOUBLEBUF;
SDL_Surface *screen,*canvas;
int gr_installed = 0;
void gr_flip()
{
SDL_Rect src, dest;
dest.x = src.x = dest.y = src.y = 0;
dest.w = src.w = canvas->w;
dest.h = src.h = canvas->h;
SDL_BlitSurface(canvas, &src, screen, &dest);
SDL_Flip(screen);
}
// Set the buffer to draw to. 0 is front, 1 is back
// With SDL, can't use it without resetting the video mode
void gr_set_draw_buffer(int buf)
{
buf = buf;
}
// returns possible (fullscreen) resolutions if any.
int gr_list_modes( array &gsmodes )
{
SDL_Rect** modes;
int modesnum = 0;
int sdl_check_flags = sdl_video_flags;
sdl_check_flags |= SDL_FULLSCREEN; // always use Fullscreen as lead.
modes = SDL_ListModes(NULL, sdl_check_flags);
if (modes == (SDL_Rect**)0) // check if we get any modes - if not, return 0
return 0;
if (modes == (SDL_Rect**)-1)
{
return 0; // can obviously use any resolution... strange!
}
else
{
for (int i = 0; modes[i]; ++i)
{
if (modes[i]->w > 0xFFF0 || modes[i]->h > 0xFFF0 // resolutions saved in 32bits. so skip bigger ones (unrealistic in 2010) (kreatordxx - made 0xFFF0 to kill warning)
|| modes[i]->w < 320 || modes[i]->h < 200) // also skip everything smaller than 320x200
continue;
gsmodes[modesnum] = SM(modes[i]->w,modes[i]->h);
modesnum++;
if (modesnum >= 50) // that really seems to be enough big boy.
break;
}
return modesnum;
}
}
int gr_check_mode(u_int32_t mode)
{
unsigned int w, h;
w=SM_W(mode);
h=SM_H(mode);
return SDL_VideoModeOK(w,h,GameArg.DbgBpp,sdl_video_flags);
}
int gr_set_mode(u_int32_t mode)
{
unsigned int w, h;
if (mode<=0)
return 0;
w=SM_W(mode);
h=SM_H(mode);
screen=NULL;
SDL_WM_SetCaption(DESCENT_VERSION, DXX_SDL_WINDOW_CAPTION);
SDL_WM_SetIcon( SDL_LoadBMP( DXX_SDL_WINDOW_ICON_BITMAP ), NULL );
if(SDL_VideoModeOK(w,h,GameArg.DbgBpp,sdl_video_flags))
{
screen=SDL_SetVideoMode(w, h, GameArg.DbgBpp, sdl_video_flags);
}
else
{
con_printf(CON_URGENT,"Cannot set %ix%i. Fallback to 640x480",w,h);
w=640;
h=480;
Game_screen_mode=mode=SM(w,h);
screen=SDL_SetVideoMode(w, h, GameArg.DbgBpp, sdl_video_flags);
}
if (screen == NULL)
{
Error("Could not set %dx%dx%d video mode\n",w,h,GameArg.DbgBpp);
exit(1);
}
canvas = SDL_CreateRGBSurface(sdl_video_flags, w, h, 8, 0, 0, 0, 0);
if (canvas == NULL)
{
Error("Could not create canvas surface\n");
exit(1);
}
*grd_curscreen = {};
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, reinterpret_cast(canvas->pixels), BM_LINEAR, w, h);
window_update_canvases();
gr_set_current_canvas(NULL);
SDL_ShowCursor(0);
gamefont_choose_game_font(w,h);
gr_palette_load(gr_palette);
gr_remap_color_fonts();
gr_remap_mono_fonts();
return 0;
}
int gr_check_fullscreen(void)
{
return (sdl_video_flags & SDL_FULLSCREEN)?1:0;
}
int gr_toggle_fullscreen(void)
{
gr_remap_color_fonts();
gr_remap_mono_fonts();
sdl_video_flags^=SDL_FULLSCREEN;
SDL_WM_ToggleFullScreen(screen);
GameCfg.WindowMode = (sdl_video_flags & SDL_FULLSCREEN)?0:1;
return (sdl_video_flags & SDL_FULLSCREEN)?1:0;
}
void gr_set_attributes(void)
{
}
int gr_init(int mode)
{
int retcode;
// Only do this function once!
if (gr_installed==1)
return -1;
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
Error("SDL library video initialisation failed: %s.",SDL_GetError());
}
grd_curscreen = make_unique({});
if (!GameCfg.WindowMode && !GameArg.SysWindow)
sdl_video_flags|=SDL_FULLSCREEN;
if (GameArg.SysNoBorders)
sdl_video_flags|=SDL_NOFRAME;
if (GameArg.DbgSdlHWSurface)
sdl_video_flags|=SDL_HWSURFACE;
if (GameArg.DbgSdlASyncBlit)
sdl_video_flags|=SDL_ASYNCBLIT;
// Set the mode.
if ((retcode=gr_set_mode(mode)))
return retcode;
grd_curscreen->sc_canvas.cv_color = 0;
grd_curscreen->sc_canvas.cv_fade_level = GR_FADE_OFF;
grd_curscreen->sc_canvas.cv_blend_func = GR_BLEND_NORMAL;
grd_curscreen->sc_canvas.cv_drawmode = 0;
grd_curscreen->sc_canvas.cv_font = NULL;
grd_curscreen->sc_canvas.cv_font_fg_color = 0;
grd_curscreen->sc_canvas.cv_font_bg_color = 0;
gr_set_current_canvas( &grd_curscreen->sc_canvas );
gr_installed = 1;
return 0;
}
void gr_close()
{
if (gr_installed==1)
{
gr_installed = 0;
grd_curscreen.reset();
SDL_ShowCursor(1);
SDL_FreeSurface(canvas);
}
}
// Palette functions follow.
static int last_r=0, last_g=0, last_b=0;
void gr_palette_step_up( int r, int g, int b )
{
palette_array_t &p = gr_palette;
int temp;
SDL_Palette *palette;
SDL_Color colors[256];
if ( (r==last_r) && (g==last_g) && (b==last_b) )
return;
last_r = r;
last_g = g;
last_b = b;
palette = canvas->format->palette;
if (palette == NULL)
return; // Display is not palettised
for (int i=0; i<256; i++)
{
temp = (int)(p[i].r) + r + gr_palette_gamma;
if (temp<0)
temp=0;
else if (temp>63)
temp=63;
colors[i].r = temp * 4;
temp = (int)(p[i].g) + g + gr_palette_gamma;
if (temp<0)
temp=0;
else if (temp>63)
temp=63;
colors[i].g = temp * 4;
temp = (int)(p[i].b) + b + gr_palette_gamma;
if (temp<0)
temp=0;
else if (temp>63)
temp=63;
colors[i].b = temp * 4;
}
SDL_SetColors(canvas, colors, 0, 256);
}
#undef min
static inline int min(int x, int y) { return x < y ? x : y; }
void gr_palette_load( palette_array_t &pal )
{
SDL_Palette *palette;
SDL_Color colors[256];
ubyte gamma[64];
if (pal != gr_current_pal)
SDL_FillRect(canvas, NULL, SDL_MapRGB(canvas->format, 0, 0, 0));
copy_bound_palette(gr_current_pal, pal);
if (canvas == NULL)
return;
palette = canvas->format->palette;
if (palette == NULL)
return; // Display is not palettised
for (int i=0;i<64;i++)
gamma[i] = (int)((pow(((double)(14)/(double)(32)), 1.0)*i) + 0.5);
for (int i = 0, j = 0; j < 256; j++)
{
int c;
c = gr_find_closest_color(gamma[gr_palette[j].r],gamma[gr_palette[j].g],gamma[gr_palette[j].b]);
gr_fade_table[14][j] = c;
colors[j].r = (min(gr_current_pal[i].r + gr_palette_gamma, 63)) * 4;
colors[j].g = (min(gr_current_pal[i].g + gr_palette_gamma, 63)) * 4;
colors[j].b = (min(gr_current_pal[i].b + gr_palette_gamma, 63)) * 4;
i++;
}
SDL_SetColors(canvas, colors, 0, 256);
init_computed_colors();
gr_remap_color_fonts();
gr_remap_mono_fonts();
}
void gr_palette_read(palette_array_t &pal)
{
SDL_Palette *palette;
unsigned i;
palette = canvas->format->palette;
if (palette == NULL)
return; // Display is not palettised
for (i = 0; i < 256; i++)
{
pal[i].r = palette->colors[i].r / 4;
pal[i].g = palette->colors[i].g / 4;
pal[i].b = palette->colors[i].b / 4;
}
}