/*
* 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
#include "gr.h"
#include "grdef.h"
#include "palette.h"
#include "game.h"
#include "console.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-range_for.h"
#include "d_range.h"
#include
using std::min;
namespace dcx {
static int sdl_video_flags = SDL_SWSURFACE | SDL_HWPALETTE | SDL_DOUBLEBUF;
static SDL_Surface *screen, *canvas;
static int gr_installed;
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);
}
// returns possible (fullscreen) resolutions if any.
uint_fast32_t gr_list_modes(std::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 == reinterpret_cast(0)) // check if we get any modes - if not, return 0
return 0;
if (modes == reinterpret_cast(-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].width = modes[i]->w;
gsmodes[modesnum].height = modes[i]->h;
modesnum++;
if (modesnum >= gsmodes.size()) // that really seems to be enough big boy.
break;
}
return modesnum;
}
}
}
namespace dsx {
int gr_set_mode(screen_mode mode)
{
screen=NULL;
SDL_WM_SetCaption(DESCENT_VERSION, DXX_SDL_WINDOW_CAPTION);
SDL_WM_SetIcon( SDL_LoadBMP( DXX_SDL_WINDOW_ICON_BITMAP ), NULL );
const auto sdl_video_flags = ::sdl_video_flags;
const auto DbgBpp = CGameArg.DbgBpp;
if(SDL_VideoModeOK(SM_W(mode), SM_H(mode), DbgBpp, sdl_video_flags))
{
}
else
{
con_printf(CON_URGENT,"Cannot set %hux%hu. Fallback to 640x480", SM_W(mode), SM_H(mode));
mode.width = 640;
mode.height = 480;
Game_screen_mode = mode;
}
const unsigned w = SM_W(mode), h = SM_H(mode);
screen = SDL_SetVideoMode(w, h, DbgBpp, sdl_video_flags);
if (screen == NULL)
{
Error("Could not set %dx%dx%d video mode\n", w, h, 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->set_screen_width_height(w, h);
grd_curscreen->sc_aspect = fixdiv(grd_curscreen->get_screen_width() * GameCfg.AspectX, grd_curscreen->get_screen_height() * GameCfg.AspectY);
gr_init_canvas(grd_curscreen->sc_canvas, reinterpret_cast(canvas->pixels), bm_mode::linear, w, h);
window_update_canvases();
gr_set_default_canvas();
SDL_ShowCursor(0);
gamefont_choose_game_font(w,h);
gr_palette_load(gr_palette);
gr_remap_color_fonts();
return 0;
}
}
namespace dcx {
int gr_check_fullscreen(void)
{
return !!(sdl_video_flags & SDL_FULLSCREEN);
}
void gr_toggle_fullscreen()
{
sdl_video_flags ^= SDL_FULLSCREEN;
const int WindowMode = !(sdl_video_flags & SDL_FULLSCREEN);
CGameCfg.WindowMode = WindowMode;
gr_remap_color_fonts();
SDL_WM_ToggleFullScreen(screen);
}
}
namespace dsx {
int gr_init()
{
// 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 = std::make_unique();
*grd_curscreen = {};
if (!CGameCfg.WindowMode && !CGameArg.SysWindow)
sdl_video_flags|=SDL_FULLSCREEN;
if (CGameArg.SysNoBorders)
sdl_video_flags|=SDL_NOFRAME;
if (CGameArg.DbgSdlHWSurface)
sdl_video_flags|=SDL_HWSURFACE;
if (CGameArg.DbgSdlASyncBlit)
sdl_video_flags|=SDL_ASYNCBLIT;
// Set the mode.
grd_curscreen->sc_canvas.cv_fade_level = GR_FADE_OFF;
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);
}
}
}
namespace dcx {
// 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;
SDL_Palette *palette;
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
std::array colors{};
range_for (const int i, xrange(256u))
{
const auto ir = static_cast(p[i].r) + r + gr_palette_gamma;
colors[i].r = std::min(std::max(ir, 0), 63) * 4;
const auto ig = static_cast(p[i].g) + g + gr_palette_gamma;
colors[i].g = std::min(std::max(ig, 0), 63) * 4;
const auto ib = static_cast(p[i].b) + b + gr_palette_gamma;
colors[i].b = std::min(std::max(ib, 0), 63) * 4;
}
SDL_SetColors(canvas, colors.data(), 0, colors.size());
}
void gr_palette_load( palette_array_t &pal )
{
SDL_Palette *palette;
std::array gamma;
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
range_for (const int i, xrange(64u))
gamma[i] = static_cast((pow((static_cast(14)/static_cast(32)), 1.0)*i) + 0.5);
std::array colors{};
for (int i = 0, j = 0; j < 256; j++)
{
const auto c = gr_find_closest_color(gamma[gr_palette[j].r], gamma[gr_palette[j].g], gamma[gr_palette[j].b]);
gr_fade_table[(gr_fade_level{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.data(), 0, colors.size());
reset_computed_colors();
gr_remap_color_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;
}
}
}