src/SDL_compat.c
author Sam Lantinga <slouken@libsdl.org>
Sun, 06 Aug 2006 00:09:04 +0000
changeset 1969 5d3724f64f2b
parent 1967 01e29c3e9a29
child 1974 70deaf574153
permissions -rw-r--r--
Clarified the difference between render drivers and render contexts
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* This file contains functions for backwards compatibility with SDL 1.2 */
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#include "SDL.h"
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#include "SDL_syswm.h"
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#include "video/SDL_sysvideo.h"
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#include "video/SDL_pixels_c.h"
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static SDL_WindowID SDL_VideoWindow;
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static SDL_RendererInfo SDL_VideoRendererInfo;
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static SDL_TextureID SDL_VideoTexture;
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static SDL_Surface *SDL_VideoSurface;
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static SDL_Surface *SDL_ShadowSurface;
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static SDL_Surface *SDL_PublicSurface;
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static SDL_GLContext *SDL_VideoContext;
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static char *wm_title;
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char *
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SDL_AudioDriverName(char *namebuf, int maxlen)
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{
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    const char *name = SDL_GetCurrentAudioDriver();
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    if (name) {
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        SDL_strlcpy(namebuf, name, maxlen);
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        return namebuf;
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    }
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    return NULL;
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}
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char *
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SDL_VideoDriverName(char *namebuf, int maxlen)
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{
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    const char *name = SDL_GetCurrentVideoDriver();
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    if (name) {
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        SDL_strlcpy(namebuf, name, maxlen);
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        return namebuf;
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    }
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    return NULL;
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}
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const SDL_VideoInfo *
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SDL_GetVideoInfo(void)
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{
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    static SDL_VideoInfo info;
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    SDL_DisplayMode mode;
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    /* Memory leak, compatibility code, who cares? */
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    if (!info.vfmt && SDL_GetDesktopDisplayMode(&mode) == 0) {
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        int bpp;
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        Uint32 Rmask, Gmask, Bmask, Amask;
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        SDL_PixelFormatEnumToMasks(mode.format, &bpp, &Rmask, &Gmask, &Bmask,
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                                   &Amask);
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        info.vfmt = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
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    }
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    return &info;
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}
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int
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SDL_VideoModeOK(int width, int height, int bpp, Uint32 flags)
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{
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    int i, actual_bpp = 0;
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    if (!SDL_GetVideoDevice()) {
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        return 0;
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    }
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    if (!(flags & SDL_FULLSCREEN)) {
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        SDL_DisplayMode mode;
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        SDL_GetDesktopDisplayMode(&mode);
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        return SDL_BITSPERPIXEL(mode.format);
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    }
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    for (i = 0; i < SDL_GetNumDisplayModes(); ++i) {
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        SDL_DisplayMode mode;
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        SDL_GetDisplayMode(i, &mode);
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        if (!mode.w || !mode.h || (width == mode.w && height == mode.h)) {
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            if (!mode.format) {
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                return bpp;
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            }
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            if (SDL_BITSPERPIXEL(mode.format) >= (Uint32) bpp) {
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                actual_bpp = SDL_BITSPERPIXEL(mode.format);
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            }
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        }
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    }
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    return actual_bpp;
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}
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SDL_Rect **
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SDL_ListModes(SDL_PixelFormat * format, Uint32 flags)
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{
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    int i, nmodes;
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    SDL_Rect **modes;
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    if (!SDL_GetVideoDevice()) {
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        return NULL;
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    }
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    if (!(flags & SDL_FULLSCREEN)) {
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        return (SDL_Rect **) (-1);
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    }
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    /* Memory leak, but this is a compatibility function, who cares? */
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    nmodes = 0;
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    modes = NULL;
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    for (i = 0; i < SDL_GetNumDisplayModes(); ++i) {
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        SDL_DisplayMode mode;
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        SDL_GetDisplayMode(i, &mode);
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        if (!mode.w || !mode.h) {
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            return (SDL_Rect **) (-1);
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        }
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        if (SDL_BITSPERPIXEL(mode.format) != format->BitsPerPixel) {
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            continue;
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        }
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        if (nmodes > 0 && modes[nmodes - 1]->w == mode.w
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            && modes[nmodes - 1]->h == mode.h) {
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            continue;
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        }
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        modes = SDL_realloc(modes, (nmodes + 2) * sizeof(*modes));
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        if (!modes) {
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            return NULL;
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        }
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        modes[nmodes] = (SDL_Rect *) SDL_malloc(sizeof(SDL_Rect));
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        if (!modes[nmodes]) {
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            return NULL;
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        }
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        modes[nmodes]->x = 0;
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        modes[nmodes]->y = 0;
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        modes[nmodes]->w = mode.w;
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        modes[nmodes]->h = mode.h;
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        ++nmodes;
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    }
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    if (modes) {
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        modes[nmodes] = NULL;
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    }
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    return modes;
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}
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static int
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SDL_CompatEventFilter(void *userdata, SDL_Event * event)
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{
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    SDL_Event fake;
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    switch (event->type) {
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    case SDL_WINDOWEVENT:
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        switch (event->window.event) {
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        case SDL_WINDOWEVENT_EXPOSED:
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            if (!SDL_HasEvent(SDL_VIDEOEXPOSEMASK)) {
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                fake.type = SDL_VIDEOEXPOSE;
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                SDL_PushEvent(&fake);
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            }
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            break;
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        case SDL_WINDOWEVENT_RESIZED:
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            fake.type = SDL_VIDEORESIZE;
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            fake.resize.w = event->window.data1;
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            fake.resize.h = event->window.data2;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_MINIMIZED:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 0;
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            fake.active.state = SDL_APPACTIVE;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_RESTORED:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 1;
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            fake.active.state = SDL_APPACTIVE;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_ENTER:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 1;
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            fake.active.state = SDL_APPMOUSEFOCUS;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_LEAVE:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 0;
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            fake.active.state = SDL_APPMOUSEFOCUS;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_FOCUS_GAINED:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 1;
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            fake.active.state = SDL_APPINPUTFOCUS;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_FOCUS_LOST:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 1;
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            fake.active.state = SDL_APPINPUTFOCUS;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_CLOSE:
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            fake.type = SDL_QUIT;
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            SDL_PushEvent(&fake);
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            break;
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        }
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    case SDL_KEYDOWN:
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    case SDL_KEYUP:
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        {
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            Uint32 unicode = 0;
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            if (event->key.type == SDL_KEYDOWN && event->key.keysym.sym < 256) {
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                unicode = event->key.keysym.sym;
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                if (unicode >= 'a' && unicode <= 'z') {
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                    int shifted = !!(event->key.keysym.mod & KMOD_SHIFT);
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                    int capslock = !!(event->key.keysym.mod & KMOD_CAPS);
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                    if ((shifted ^ capslock) != 0) {
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                        unicode = SDL_toupper(unicode);
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                    }
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                }
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            }
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            if (unicode) {
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                event->key.keysym.unicode = unicode;
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            }
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            break;
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        }
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    case SDL_MOUSEWHEEL:
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        {
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            Uint8 button;
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            int selected;
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            int x, y;
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            selected = SDL_SelectMouse(event->wheel.which);
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            SDL_GetMouseState(&x, &y);
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            SDL_SelectMouse(selected);
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            if (event->wheel.motion > 0) {
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                button = SDL_BUTTON_WHEELUP;
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            } else {
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                button = SDL_BUTTON_WHEELDOWN;
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            }
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            fake.button.which = event->wheel.windowID;
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            fake.button.button = button;
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            fake.button.x = x;
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            fake.button.y = y;
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            fake.button.windowID = event->wheel.windowID;
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            fake.type = SDL_MOUSEBUTTONDOWN;
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            fake.button.state = SDL_PRESSED;
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            SDL_PushEvent(&fake);
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            fake.type = SDL_MOUSEBUTTONUP;
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            fake.button.state = SDL_RELEASED;
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            SDL_PushEvent(&fake);
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            break;
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        }
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    }
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    return 1;
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}
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static int
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SDL_VideoPaletteChanged(void *userdata, SDL_Palette * palette)
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{
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    if (userdata == SDL_ShadowSurface) {
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        /* If the shadow palette changed, make the changes visible */
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        if (!SDL_VideoSurface->format->palette) {
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            SDL_UpdateRect(SDL_ShadowSurface, 0, 0, 0, 0);
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        }
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    }
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    if (userdata == SDL_VideoSurface) {
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        return SDL_SetDisplayPalette(palette->colors, 0, palette->ncolors);
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    }
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    return 0;
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}
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static void
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GetEnvironmentWindowPosition(int w, int h, int *x, int *y)
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{
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    const char *window = SDL_getenv("SDL_VIDEO_WINDOW_POS");
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    const char *center = SDL_getenv("SDL_VIDEO_CENTERED");
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    if (window) {
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        if (SDL_sscanf(window, "%d,%d", x, y) == 2) {
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            return;
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        }
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        if (SDL_strcmp(window, "center") == 0) {
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            center = window;
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        }
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    }
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    if (center) {
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        SDL_DisplayMode mode;
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   309
        SDL_GetDesktopDisplayMode(&mode);
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        *x = (mode.w - w) / 2;
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        *y = (mode.h - h) / 2;
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    }
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}
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SDL_Surface *
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SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags)
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{
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   318
    SDL_DisplayMode desktop_mode;
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   319
    SDL_DisplayMode mode;
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    int window_x = SDL_WINDOWPOS_UNDEFINED;
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   321
    int window_y = SDL_WINDOWPOS_UNDEFINED;
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   322
    Uint32 window_flags;
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   323
    Uint32 desktop_format;
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   324
    Uint32 desired_format;
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   325
    Uint32 surface_flags;
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   326
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    if (!SDL_GetVideoDevice()) {
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        if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0) {
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            return NULL;
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        }
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   331
    }
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   333
    /* Destroy existing window */
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    SDL_PublicSurface = NULL;
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   335
    if (SDL_ShadowSurface) {
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   336
        SDL_FreeSurface(SDL_ShadowSurface);
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   337
        SDL_ShadowSurface = NULL;
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   338
    }
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   339
    if (SDL_VideoSurface) {
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   340
        SDL_DelPaletteWatch(SDL_VideoSurface->format->palette,
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                            SDL_VideoPaletteChanged, NULL);
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        SDL_FreeSurface(SDL_VideoSurface);
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        SDL_VideoSurface = NULL;
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    }
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   345
    if (SDL_VideoContext) {
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        SDL_GL_MakeCurrent(0, NULL);
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   347
        SDL_GL_DeleteContext(SDL_VideoContext);
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        SDL_VideoContext = NULL;
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   349
    }
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   350
    if (SDL_VideoWindow) {
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   351
        SDL_GetWindowPosition(SDL_VideoWindow, &window_x, &window_y);
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   352
    }
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   353
    SDL_DestroyWindow(SDL_VideoWindow);
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   354
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   355
    /* Set up the event filter */
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   356
    if (!SDL_GetEventFilter(NULL, NULL)) {
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   357
        SDL_SetEventFilter(SDL_CompatEventFilter, NULL);
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   358
    }
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   359
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   360
    /* Create a new window */
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    window_flags = SDL_WINDOW_SHOWN;
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   362
    if (flags & SDL_FULLSCREEN) {
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   363
        window_flags |= SDL_WINDOW_FULLSCREEN;
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   364
    }
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   365
    if (flags & SDL_OPENGL) {
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   366
        window_flags |= SDL_WINDOW_OPENGL;
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   367
    }
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   368
    if (flags & SDL_RESIZABLE) {
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   369
        window_flags |= SDL_WINDOW_RESIZABLE;
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   370
    }
slouken@1895
   371
    if (flags & SDL_NOFRAME) {
slouken@1895
   372
        window_flags |= SDL_WINDOW_BORDERLESS;
slouken@1895
   373
    }
slouken@1895
   374
    GetEnvironmentWindowPosition(width, height, &window_x, &window_y);
slouken@1895
   375
    SDL_SetFullscreenDisplayMode(NULL);
slouken@1895
   376
    SDL_VideoWindow =
slouken@1895
   377
        SDL_CreateWindow(wm_title, window_x, window_y, width, height,
slouken@1895
   378
                         window_flags);
slouken@1895
   379
    if (!SDL_VideoWindow) {
slouken@1895
   380
        return NULL;
slouken@1895
   381
    }
slouken@1895
   382
slouken@1895
   383
    window_flags = SDL_GetWindowFlags(SDL_VideoWindow);
slouken@1895
   384
    surface_flags = 0;
slouken@1895
   385
    if (window_flags & SDL_WINDOW_FULLSCREEN) {
slouken@1895
   386
        surface_flags |= SDL_FULLSCREEN;
slouken@1895
   387
    }
slouken@1895
   388
    if (window_flags & SDL_WINDOW_OPENGL) {
slouken@1895
   389
        surface_flags |= SDL_OPENGL;
slouken@1895
   390
    }
slouken@1895
   391
    if (window_flags & SDL_WINDOW_RESIZABLE) {
slouken@1895
   392
        surface_flags |= SDL_RESIZABLE;
slouken@1895
   393
    }
slouken@1895
   394
    if (window_flags & SDL_WINDOW_BORDERLESS) {
slouken@1895
   395
        surface_flags |= SDL_NOFRAME;
slouken@1895
   396
    }
slouken@1895
   397
slouken@1895
   398
    /* Set up the desired display mode */
slouken@1967
   399
    SDL_GetDesktopDisplayMode(&desktop_mode);
slouken@1967
   400
    desktop_format = desktop_mode.format;
slouken@1895
   401
    if (desktop_format && ((flags & SDL_ANYFORMAT)
slouken@1895
   402
                           || (bpp == SDL_BITSPERPIXEL(desktop_format)))) {
slouken@1895
   403
        desired_format = desktop_format;
slouken@1895
   404
    } else {
slouken@1895
   405
        switch (bpp) {
slouken@1895
   406
        case 0:
slouken@1895
   407
            if (desktop_format) {
slouken@1895
   408
                desired_format = desktop_format;
slouken@1895
   409
            } else {
slouken@1965
   410
                desired_format = SDL_PIXELFORMAT_RGB888;
slouken@1895
   411
            }
slouken@1895
   412
            break;
slouken@1895
   413
        case 8:
slouken@1965
   414
            desired_format = SDL_PIXELFORMAT_INDEX8;
slouken@1895
   415
            break;
slouken@1895
   416
        case 15:
slouken@1965
   417
            desired_format = SDL_PIXELFORMAT_RGB555;
slouken@1895
   418
            break;
slouken@1895
   419
        case 16:
slouken@1965
   420
            desired_format = SDL_PIXELFORMAT_RGB565;
slouken@1895
   421
            break;
slouken@1895
   422
        case 24:
slouken@1965
   423
            desired_format = SDL_PIXELFORMAT_RGB24;
slouken@1895
   424
            break;
slouken@1895
   425
        case 32:
slouken@1965
   426
            desired_format = SDL_PIXELFORMAT_RGB888;
slouken@1895
   427
            break;
slouken@1895
   428
        default:
slouken@1895
   429
            SDL_SetError("Unsupported bpp in SDL_SetVideoMode()");
slouken@1895
   430
            return NULL;
slouken@1895
   431
        }
slouken@1895
   432
    }
slouken@1895
   433
    mode.format = desired_format;
slouken@1895
   434
    mode.w = width;
slouken@1895
   435
    mode.h = height;
slouken@1895
   436
    mode.refresh_rate = 0;
slouken@1895
   437
slouken@1895
   438
    /* Set the desired display mode */
slouken@1895
   439
    if (flags & SDL_FULLSCREEN) {
slouken@1895
   440
        if (SDL_SetFullscreenDisplayMode(&mode) < 0) {
slouken@1895
   441
            return NULL;
slouken@1895
   442
        }
slouken@1895
   443
    }
slouken@1895
   444
slouken@1895
   445
    /* If we're in OpenGL mode, just create a stub surface and we're done! */
slouken@1895
   446
    if (flags & SDL_OPENGL) {
slouken@1912
   447
        SDL_VideoContext = SDL_GL_CreateContext(SDL_VideoWindow);
slouken@1912
   448
        if (!SDL_VideoContext) {
slouken@1912
   449
            return NULL;
slouken@1912
   450
        }
slouken@1912
   451
        if (SDL_GL_MakeCurrent(SDL_VideoWindow, SDL_VideoContext) < 0) {
slouken@1912
   452
            return NULL;
slouken@1912
   453
        }
slouken@1895
   454
        SDL_VideoSurface =
slouken@1895
   455
            SDL_CreateRGBSurfaceFrom(NULL, width, height, bpp, 0, 0, 0, 0, 0);
slouken@1895
   456
        if (!SDL_VideoSurface) {
slouken@1895
   457
            return NULL;
slouken@1895
   458
        }
slouken@1895
   459
        SDL_VideoSurface->flags |= surface_flags;
slouken@1895
   460
        SDL_PublicSurface = SDL_VideoSurface;
slouken@1895
   461
        return SDL_PublicSurface;
slouken@1895
   462
    }
slouken@1895
   463
slouken@1895
   464
    /* Create a renderer for the window */
slouken@1907
   465
    if (SDL_CreateRenderer
slouken@1907
   466
        (SDL_VideoWindow, -1,
slouken@1965
   467
         SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTDISCARD) < 0) {
slouken@1895
   468
        return NULL;
slouken@1895
   469
    }
slouken@1969
   470
    SDL_GetRenderDriverInfo(-1, &SDL_VideoRendererInfo);
slouken@1895
   471
slouken@1895
   472
    /* Create a texture for the screen surface */
slouken@1895
   473
    SDL_VideoTexture =
slouken@1965
   474
        SDL_CreateTexture(desired_format, SDL_TEXTUREACCESS_LOCAL, width,
slouken@1895
   475
                          height);
slouken@1895
   476
    if (!SDL_VideoTexture) {
slouken@1895
   477
        SDL_VideoTexture =
slouken@1965
   478
            SDL_CreateTexture(SDL_PIXELFORMAT_RGB888, SDL_TEXTUREACCESS_LOCAL,
slouken@1924
   479
                              width, height);
slouken@1895
   480
    }
slouken@1895
   481
    if (!SDL_VideoTexture) {
slouken@1895
   482
        return NULL;
slouken@1895
   483
    }
slouken@1895
   484
slouken@1895
   485
    /* Create the screen surface */
slouken@1895
   486
    SDL_VideoSurface = SDL_CreateRGBSurfaceFromTexture(SDL_VideoTexture);
slouken@1895
   487
    if (!SDL_VideoSurface) {
slouken@1895
   488
        return NULL;
slouken@1895
   489
    }
slouken@1895
   490
    SDL_VideoSurface->flags |= surface_flags;
slouken@1895
   491
slouken@1895
   492
    /* Set a default screen palette */
slouken@1895
   493
    if (SDL_VideoSurface->format->palette) {
slouken@1895
   494
        SDL_VideoSurface->flags |= SDL_HWPALETTE;
slouken@1895
   495
        SDL_DitherColors(SDL_VideoSurface->format->palette->colors,
slouken@1895
   496
                         SDL_VideoSurface->format->BitsPerPixel);
slouken@1895
   497
        SDL_AddPaletteWatch(SDL_VideoSurface->format->palette,
slouken@1895
   498
                            SDL_VideoPaletteChanged, NULL);
slouken@1895
   499
        SDL_SetPaletteColors(SDL_VideoSurface->format->palette,
slouken@1895
   500
                             SDL_VideoSurface->format->palette->colors, 0,
slouken@1895
   501
                             SDL_VideoSurface->format->palette->ncolors);
slouken@1895
   502
    }
slouken@1895
   503
slouken@1895
   504
    /* Create a shadow surface if necessary */
slouken@1895
   505
    if (((bpp != SDL_VideoSurface->format->BitsPerPixel)
slouken@1895
   506
         && !(flags & SDL_ANYFORMAT))
slouken@1895
   507
        || ((SDL_VideoSurface->flags & SDL_HWSURFACE)
slouken@1895
   508
            && !(flags & SDL_HWSURFACE))) {
slouken@1895
   509
        if ((bpp == SDL_VideoSurface->format->BitsPerPixel)
slouken@1895
   510
            || (flags & SDL_ANYFORMAT)) {
slouken@1895
   511
            SDL_ShadowSurface =
slouken@1895
   512
                SDL_CreateRGBSurface(0, width, height,
slouken@1895
   513
                                     SDL_VideoSurface->format->BitsPerPixel,
slouken@1895
   514
                                     SDL_VideoSurface->format->Rmask,
slouken@1895
   515
                                     SDL_VideoSurface->format->Gmask,
slouken@1895
   516
                                     SDL_VideoSurface->format->Bmask,
slouken@1895
   517
                                     SDL_VideoSurface->format->Amask);
slouken@1895
   518
        } else {
slouken@1895
   519
            SDL_ShadowSurface =
slouken@1895
   520
                SDL_CreateRGBSurface(0, width, height, bpp, 0, 0, 0, 0);
slouken@1895
   521
        }
slouken@1895
   522
        if (!SDL_ShadowSurface) {
slouken@1895
   523
            return NULL;
slouken@1895
   524
        }
slouken@1895
   525
        SDL_ShadowSurface->flags |= surface_flags;
slouken@1895
   526
slouken@1895
   527
        /* 8-bit SDL_ShadowSurface surfaces report that they have exclusive palette */
slouken@1895
   528
        if (SDL_ShadowSurface->format->palette) {
slouken@1895
   529
            SDL_ShadowSurface->flags |= SDL_HWPALETTE;
slouken@1895
   530
            if (SDL_VideoSurface->format->palette) {
slouken@1895
   531
                SDL_SetSurfacePalette(SDL_ShadowSurface,
slouken@1895
   532
                                      SDL_VideoSurface->format->palette);
slouken@1895
   533
            } else {
slouken@1895
   534
                SDL_DitherColors(SDL_ShadowSurface->format->palette->colors,
slouken@1895
   535
                                 SDL_ShadowSurface->format->BitsPerPixel);
slouken@1895
   536
            }
slouken@1895
   537
        }
slouken@1895
   538
    }
slouken@1895
   539
    SDL_PublicSurface =
slouken@1895
   540
        (SDL_ShadowSurface ? SDL_ShadowSurface : SDL_VideoSurface);
slouken@1895
   541
slouken@1895
   542
    /* Clear the surface for display */
slouken@1895
   543
    SDL_FillRect(SDL_PublicSurface, NULL, 0);
slouken@1897
   544
    SDL_UpdateRect(SDL_PublicSurface, 0, 0, 0, 0);
slouken@1895
   545
slouken@1895
   546
    /* We're finally done! */
slouken@1895
   547
    return SDL_PublicSurface;
slouken@1895
   548
}
slouken@1895
   549
slouken@1895
   550
SDL_Surface *
slouken@1895
   551
SDL_GetVideoSurface(void)
slouken@1895
   552
{
slouken@1895
   553
    return SDL_PublicSurface;
slouken@1895
   554
}
slouken@1895
   555
slouken@1895
   556
SDL_Surface *
slouken@1895
   557
SDL_DisplayFormat(SDL_Surface * surface)
slouken@1895
   558
{
slouken@1895
   559
    Uint32 flags;
slouken@1895
   560
slouken@1895
   561
    if (!SDL_PublicSurface) {
slouken@1895
   562
        SDL_SetError("No video mode has been set");
slouken@1895
   563
        return NULL;
slouken@1895
   564
    }
slouken@1895
   565
slouken@1895
   566
    /* Set the flags appropriate for copying to display surface */
slouken@1895
   567
    flags = SDL_SWSURFACE;
slouken@1895
   568
#ifdef AUTORLE_DISPLAYFORMAT
slouken@1895
   569
    flags |= (surface->flags & (SDL_SRCCOLORKEY | SDL_SRCALPHA));
slouken@1895
   570
    flags |= SDL_RLEACCELOK;
slouken@1895
   571
#else
slouken@1895
   572
    flags |=
slouken@1895
   573
        surface->flags & (SDL_SRCCOLORKEY | SDL_SRCALPHA | SDL_RLEACCELOK);
slouken@1895
   574
#endif
slouken@1895
   575
    return SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags);
slouken@1895
   576
}
slouken@1895
   577
slouken@1895
   578
SDL_Surface *
slouken@1895
   579
SDL_DisplayFormatAlpha(SDL_Surface * surface)
slouken@1895
   580
{
slouken@1895
   581
    SDL_PixelFormat *vf;
slouken@1895
   582
    SDL_PixelFormat *format;
slouken@1895
   583
    SDL_Surface *converted;
slouken@1895
   584
    Uint32 flags;
slouken@1895
   585
    /* default to ARGB8888 */
slouken@1895
   586
    Uint32 amask = 0xff000000;
slouken@1895
   587
    Uint32 rmask = 0x00ff0000;
slouken@1895
   588
    Uint32 gmask = 0x0000ff00;
slouken@1895
   589
    Uint32 bmask = 0x000000ff;
slouken@1895
   590
slouken@1895
   591
    if (!SDL_PublicSurface) {
slouken@1895
   592
        SDL_SetError("No video mode has been set");
slouken@1895
   593
        return NULL;
slouken@1895
   594
    }
slouken@1895
   595
    vf = SDL_PublicSurface->format;
slouken@1895
   596
slouken@1895
   597
    switch (vf->BytesPerPixel) {
slouken@1895
   598
    case 2:
slouken@1895
   599
        /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}.
slouken@1895
   600
           For anything else (like ARGB4444) it doesn't matter
slouken@1895
   601
           since we have no special code for it anyway */
slouken@1895
   602
        if ((vf->Rmask == 0x1f) &&
slouken@1895
   603
            (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) {
slouken@1895
   604
            rmask = 0xff;
slouken@1895
   605
            bmask = 0xff0000;
slouken@1895
   606
        }
slouken@1895
   607
        break;
slouken@1895
   608
slouken@1895
   609
    case 3:
slouken@1895
   610
    case 4:
slouken@1895
   611
        /* Keep the video format, as long as the high 8 bits are
slouken@1895
   612
           unused or alpha */
slouken@1895
   613
        if ((vf->Rmask == 0xff) && (vf->Bmask == 0xff0000)) {
slouken@1895
   614
            rmask = 0xff;
slouken@1895
   615
            bmask = 0xff0000;
slouken@1895
   616
        }
slouken@1895
   617
        break;
slouken@1895
   618
slouken@1895
   619
    default:
slouken@1895
   620
        /* We have no other optimised formats right now. When/if a new
slouken@1895
   621
           optimised alpha format is written, add the converter here */
slouken@1895
   622
        break;
slouken@1895
   623
    }
slouken@1895
   624
    format = SDL_AllocFormat(32, rmask, gmask, bmask, amask);
slouken@1895
   625
    flags = SDL_PublicSurface->flags & SDL_HWSURFACE;
slouken@1895
   626
    flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
slouken@1895
   627
    converted = SDL_ConvertSurface(surface, format, flags);
slouken@1895
   628
    SDL_FreeFormat(format);
slouken@1895
   629
    return converted;
slouken@1895
   630
}
slouken@1895
   631
slouken@1895
   632
int
slouken@1895
   633
SDL_Flip(SDL_Surface * screen)
slouken@1895
   634
{
slouken@1895
   635
    SDL_UpdateRect(screen, 0, 0, 0, 0);
slouken@1895
   636
    return 0;
slouken@1895
   637
}
slouken@1895
   638
slouken@1895
   639
void
slouken@1895
   640
SDL_UpdateRect(SDL_Surface * screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h)
slouken@1895
   641
{
slouken@1895
   642
    if (screen) {
slouken@1895
   643
        SDL_Rect rect;
slouken@1895
   644
slouken@1895
   645
        /* Fill the rectangle */
slouken@1897
   646
        rect.x = (int) x;
slouken@1897
   647
        rect.y = (int) y;
slouken@1897
   648
        rect.w = (int) (w ? w : screen->w);
slouken@1897
   649
        rect.h = (int) (h ? h : screen->h);
slouken@1895
   650
        SDL_UpdateRects(screen, 1, &rect);
slouken@1895
   651
    }
slouken@1895
   652
}
slouken@1895
   653
void
slouken@1895
   654
SDL_UpdateRects(SDL_Surface * screen, int numrects, SDL_Rect * rects)
slouken@1895
   655
{
slouken@1895
   656
    int i;
slouken@1895
   657
slouken@1895
   658
    if (screen == SDL_ShadowSurface) {
slouken@1895
   659
        for (i = 0; i < numrects; ++i) {
slouken@1895
   660
            SDL_LowerBlit(SDL_ShadowSurface, &rects[i], SDL_VideoSurface,
slouken@1895
   661
                          &rects[i]);
slouken@1895
   662
        }
slouken@1895
   663
slouken@1895
   664
        /* Fall through to video surface update */
slouken@1895
   665
        screen = SDL_VideoSurface;
slouken@1895
   666
    }
slouken@1895
   667
    if (screen == SDL_VideoSurface) {
slouken@1965
   668
        if (SDL_VideoRendererInfo.flags & SDL_RENDERER_PRESENTCOPY) {
slouken@1907
   669
            for (i = 0; i < numrects; ++i) {
slouken@1907
   670
                SDL_RenderCopy(SDL_VideoTexture, &rects[i], &rects[i],
slouken@1965
   671
                               SDL_TEXTUREBLENDMODE_NONE,
slouken@1965
   672
                               SDL_TEXTURESCALEMODE_NONE);
slouken@1907
   673
            }
slouken@1907
   674
        } else {
slouken@1907
   675
            SDL_Rect rect;
slouken@1907
   676
            rect.x = 0;
slouken@1907
   677
            rect.y = 0;
slouken@1907
   678
            rect.w = screen->w;
slouken@1907
   679
            rect.h = screen->h;
slouken@1907
   680
            SDL_RenderCopy(SDL_VideoTexture, &rect, &rect,
slouken@1965
   681
                           SDL_TEXTUREBLENDMODE_NONE,
slouken@1965
   682
                           SDL_TEXTURESCALEMODE_NONE);
slouken@1895
   683
        }
slouken@1895
   684
        SDL_RenderPresent();
slouken@1895
   685
    }
slouken@1895
   686
}
slouken@1895
   687
slouken@1895
   688
void
slouken@1895
   689
SDL_WM_SetCaption(const char *title, const char *icon)
slouken@1895
   690
{
slouken@1895
   691
    if (wm_title) {
slouken@1895
   692
        SDL_free(wm_title);
slouken@1895
   693
    } else {
slouken@1895
   694
        wm_title = SDL_strdup(title);
slouken@1895
   695
    }
slouken@1895
   696
    SDL_SetWindowTitle(SDL_VideoWindow, wm_title);
slouken@1895
   697
}
slouken@1895
   698
slouken@1895
   699
void
slouken@1895
   700
SDL_WM_GetCaption(char **title, char **icon)
slouken@1895
   701
{
slouken@1895
   702
    if (title) {
slouken@1895
   703
        *title = wm_title;
slouken@1895
   704
    }
slouken@1895
   705
    if (icon) {
slouken@1895
   706
        *icon = "";
slouken@1895
   707
    }
slouken@1895
   708
}
slouken@1895
   709
slouken@1895
   710
void
slouken@1895
   711
SDL_WM_SetIcon(SDL_Surface * icon, Uint8 * mask)
slouken@1895
   712
{
slouken@1895
   713
    /* FIXME */
slouken@1895
   714
}
slouken@1895
   715
slouken@1895
   716
int
slouken@1895
   717
SDL_WM_IconifyWindow(void)
slouken@1895
   718
{
slouken@1895
   719
    SDL_MinimizeWindow(SDL_VideoWindow);
slouken@1895
   720
    return 0;
slouken@1895
   721
}
slouken@1895
   722
slouken@1895
   723
int
slouken@1895
   724
SDL_WM_ToggleFullScreen(SDL_Surface * surface)
slouken@1895
   725
{
slouken@1895
   726
    if (SDL_GetWindowFlags(SDL_VideoWindow) & SDL_WINDOW_FULLSCREEN) {
slouken@1895
   727
        if (SDL_SetWindowFullscreen(SDL_VideoWindow, 0) < 0) {
slouken@1895
   728
            return 0;
slouken@1895
   729
        }
slouken@1895
   730
        SDL_PublicSurface->flags &= ~SDL_FULLSCREEN;
slouken@1895
   731
    } else {
slouken@1895
   732
        if (SDL_SetWindowFullscreen(SDL_VideoWindow, 1) < 0) {
slouken@1895
   733
            return 0;
slouken@1895
   734
        }
slouken@1895
   735
        SDL_PublicSurface->flags |= SDL_FULLSCREEN;
slouken@1895
   736
    }
slouken@1895
   737
    return 1;
slouken@1895
   738
}
slouken@1895
   739
slouken@1895
   740
SDL_GrabMode
slouken@1895
   741
SDL_WM_GrabInput(SDL_GrabMode mode)
slouken@1895
   742
{
slouken@1895
   743
    if (mode != SDL_GRAB_QUERY) {
slouken@1895
   744
        SDL_SetWindowGrab(SDL_VideoWindow, mode);
slouken@1895
   745
    }
slouken@1895
   746
    return (SDL_GrabMode) SDL_GetWindowGrab(SDL_VideoWindow);
slouken@1895
   747
}
slouken@1895
   748
slouken@1895
   749
void
slouken@1895
   750
SDL_WarpMouse(Uint16 x, Uint16 y)
slouken@1895
   751
{
slouken@1895
   752
    SDL_WarpMouseInWindow(SDL_VideoWindow, x, y);
slouken@1895
   753
}
slouken@1895
   754
slouken@1895
   755
Uint8
slouken@1895
   756
SDL_GetAppState(void)
slouken@1895
   757
{
slouken@1895
   758
    Uint8 state = 0;
slouken@1895
   759
    Uint32 flags = 0;
slouken@1895
   760
slouken@1895
   761
    flags = SDL_GetWindowFlags(SDL_VideoWindow);
slouken@1895
   762
    if ((flags & SDL_WINDOW_SHOWN) && !(flags & SDL_WINDOW_MINIMIZED)) {
slouken@1895
   763
        state |= SDL_APPACTIVE;
slouken@1895
   764
    }
slouken@1895
   765
    if (flags & SDL_WINDOW_INPUT_FOCUS) {
slouken@1895
   766
        state |= SDL_APPINPUTFOCUS;
slouken@1895
   767
    }
slouken@1895
   768
    if (flags & SDL_WINDOW_MOUSE_FOCUS) {
slouken@1895
   769
        state |= SDL_APPMOUSEFOCUS;
slouken@1895
   770
    }
slouken@1895
   771
    return state;
slouken@1895
   772
}
slouken@1895
   773
slouken@1895
   774
const SDL_version *
slouken@1895
   775
SDL_Linked_Version(void)
slouken@1895
   776
{
slouken@1895
   777
    static SDL_version version;
slouken@1895
   778
    SDL_VERSION(&version);
slouken@1895
   779
    return &version;
slouken@1895
   780
}
slouken@1895
   781
slouken@1895
   782
int
slouken@1895
   783
SDL_SetPalette(SDL_Surface * surface, int flags, const SDL_Color * colors,
slouken@1895
   784
               int firstcolor, int ncolors)
slouken@1895
   785
{
slouken@1895
   786
    return SDL_SetColors(surface, colors, firstcolor, ncolors);
slouken@1895
   787
}
slouken@1895
   788
slouken@1895
   789
int
slouken@1895
   790
SDL_SetColors(SDL_Surface * surface, const SDL_Color * colors, int firstcolor,
slouken@1895
   791
              int ncolors)
slouken@1895
   792
{
slouken@1895
   793
    if (SDL_SetPaletteColors
slouken@1895
   794
        (surface->format->palette, colors, firstcolor, ncolors) == 0) {
slouken@1895
   795
        return 1;
slouken@1895
   796
    } else {
slouken@1895
   797
        return 0;
slouken@1895
   798
    }
slouken@1895
   799
}
slouken@1895
   800
slouken@1895
   801
int
slouken@1895
   802
SDL_GetWMInfo(SDL_SysWMinfo * info)
slouken@1895
   803
{
slouken@1895
   804
    return SDL_GetWindowWMInfo(SDL_VideoWindow, info);
slouken@1895
   805
}
slouken@1895
   806
slouken@1895
   807
#if 0
slouken@1895
   808
void
slouken@1895
   809
SDL_MoveCursor(int x, int y)
slouken@1895
   810
{
slouken@1895
   811
    SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
   812
slouken@1895
   813
    /* Erase and update the current mouse position */
slouken@1895
   814
    if (SHOULD_DRAWCURSOR(SDL_cursorstate)) {
slouken@1895
   815
        /* Erase and redraw mouse cursor in new position */
slouken@1895
   816
        SDL_LockCursor();
slouken@1895
   817
        SDL_EraseCursor(SDL_VideoSurface);
slouken@1895
   818
        SDL_cursor->area.x = (x - SDL_cursor->hot_x);
slouken@1895
   819
        SDL_cursor->area.y = (y - SDL_cursor->hot_y);
slouken@1895
   820
        SDL_DrawCursor(SDL_VideoSurface);
slouken@1895
   821
        SDL_UnlockCursor();
slouken@1895
   822
    } else if (_this->MoveWMCursor) {
slouken@1895
   823
        _this->MoveWMCursor(_this, x, y);
slouken@1895
   824
    }
slouken@1895
   825
}
slouken@1895
   826
slouken@1895
   827
/* Keep track of the current cursor colors */
slouken@1895
   828
static int palette_changed = 1;
slouken@1895
   829
static Uint8 pixels8[2];
slouken@1895
   830
slouken@1895
   831
void
slouken@1895
   832
SDL_CursorPaletteChanged(void)
slouken@1895
   833
{
slouken@1895
   834
    palette_changed = 1;
slouken@1895
   835
}
slouken@1895
   836
slouken@1895
   837
void
slouken@1895
   838
SDL_MouseRect(SDL_Rect * area)
slouken@1895
   839
{
slouken@1895
   840
    SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
   841
    int clip_diff;
slouken@1895
   842
slouken@1895
   843
    *area = SDL_cursor->area;
slouken@1895
   844
    if (area->x < 0) {
slouken@1895
   845
        area->w += area->x;
slouken@1895
   846
        area->x = 0;
slouken@1895
   847
    }
slouken@1895
   848
    if (area->y < 0) {
slouken@1895
   849
        area->h += area->y;
slouken@1895
   850
        area->y = 0;
slouken@1895
   851
    }
slouken@1895
   852
    clip_diff = (area->x + area->w) - SDL_VideoSurface->w;
slouken@1895
   853
    if (clip_diff > 0) {
slouken@1895
   854
        area->w = area->w < clip_diff ? 0 : area->w - clip_diff;
slouken@1895
   855
    }
slouken@1895
   856
    clip_diff = (area->y + area->h) - SDL_VideoSurface->h;
slouken@1895
   857
    if (clip_diff > 0) {
slouken@1895
   858
        area->h = area->h < clip_diff ? 0 : area->h - clip_diff;
slouken@1895
   859
    }
slouken@1895
   860
}
slouken@1895
   861
slouken@1895
   862
static void
slouken@1895
   863
SDL_DrawCursorFast(SDL_Surface * screen, SDL_Rect * area)
slouken@1895
   864
{
slouken@1895
   865
    const Uint32 pixels[2] = { 0xFFFFFFFF, 0x00000000 };
slouken@1895
   866
    int i, w, h;
slouken@1895
   867
    Uint8 *data, datab;
slouken@1895
   868
    Uint8 *mask, maskb;
slouken@1895
   869
slouken@1895
   870
    data = SDL_cursor->data + area->y * SDL_cursor->area.w / 8;
slouken@1895
   871
    mask = SDL_cursor->mask + area->y * SDL_cursor->area.w / 8;
slouken@1895
   872
    switch (screen->format->BytesPerPixel) {
slouken@1895
   873
slouken@1895
   874
    case 1:
slouken@1895
   875
        {
slouken@1895
   876
            Uint8 *dst;
slouken@1895
   877
            int dstskip;
slouken@1895
   878
slouken@1895
   879
            if (palette_changed) {
slouken@1895
   880
                pixels8[0] =
slouken@1895
   881
                    (Uint8) SDL_MapRGB(screen->format, 255, 255, 255);
slouken@1895
   882
                pixels8[1] = (Uint8) SDL_MapRGB(screen->format, 0, 0, 0);
slouken@1895
   883
                palette_changed = 0;
slouken@1895
   884
            }
slouken@1895
   885
            dst = (Uint8 *) screen->pixels +
slouken@1895
   886
                (SDL_cursor->area.y + area->y) * screen->pitch +
slouken@1895
   887
                SDL_cursor->area.x;
slouken@1895
   888
            dstskip = screen->pitch - area->w;
slouken@1895
   889
slouken@1895
   890
            for (h = area->h; h; h--) {
slouken@1895
   891
                for (w = area->w / 8; w; w--) {
slouken@1895
   892
                    maskb = *mask++;
slouken@1895
   893
                    datab = *data++;
slouken@1895
   894
                    for (i = 0; i < 8; ++i) {
slouken@1895
   895
                        if (maskb & 0x80) {
slouken@1895
   896
                            *dst = pixels8[datab >> 7];
slouken@1895
   897
                        }
slouken@1895
   898
                        maskb <<= 1;
slouken@1895
   899
                        datab <<= 1;
slouken@1895
   900
                        dst++;
slouken@1895
   901
                    }
slouken@1895
   902
                }
slouken@1895
   903
                dst += dstskip;
slouken@1895
   904
            }
slouken@1895
   905
        }
slouken@1895
   906
        break;
slouken@1895
   907
slouken@1895
   908
    case 2:
slouken@1895
   909
        {
slouken@1895
   910
            Uint16 *dst;
slouken@1895
   911
            int dstskip;
slouken@1895
   912
slouken@1895
   913
            dst = (Uint16 *) screen->pixels +
slouken@1895
   914
                (SDL_cursor->area.y + area->y) * screen->pitch / 2 +
slouken@1895
   915
                SDL_cursor->area.x;
slouken@1895
   916
            dstskip = (screen->pitch / 2) - area->w;
slouken@1895
   917
slouken@1895
   918
            for (h = area->h; h; h--) {
slouken@1895
   919
                for (w = area->w / 8; w; w--) {
slouken@1895
   920
                    maskb = *mask++;
slouken@1895
   921
                    datab = *data++;
slouken@1895
   922
                    for (i = 0; i < 8; ++i) {
slouken@1895
   923
                        if (maskb & 0x80) {
slouken@1895
   924
                            *dst = (Uint16) pixels[datab >> 7];
slouken@1895
   925
                        }
slouken@1895
   926
                        maskb <<= 1;
slouken@1895
   927
                        datab <<= 1;
slouken@1895
   928
                        dst++;
slouken@1895
   929
                    }
slouken@1895
   930
                }
slouken@1895
   931
                dst += dstskip;
slouken@1895
   932
            }
slouken@1895
   933
        }
slouken@1895
   934
        break;
slouken@1895
   935
slouken@1895
   936
    case 3:
slouken@1895
   937
        {
slouken@1895
   938
            Uint8 *dst;
slouken@1895
   939
            int dstskip;
slouken@1895
   940
slouken@1895
   941
            dst = (Uint8 *) screen->pixels +
slouken@1895
   942
                (SDL_cursor->area.y + area->y) * screen->pitch +
slouken@1895
   943
                SDL_cursor->area.x * 3;
slouken@1895
   944
            dstskip = screen->pitch - area->w * 3;
slouken@1895
   945
slouken@1895
   946
            for (h = area->h; h; h--) {
slouken@1895
   947
                for (w = area->w / 8; w; w--) {
slouken@1895
   948
                    maskb = *mask++;
slouken@1895
   949
                    datab = *data++;
slouken@1895
   950
                    for (i = 0; i < 8; ++i) {
slouken@1895
   951
                        if (maskb & 0x80) {
slouken@1895
   952
                            SDL_memset(dst, pixels[datab >> 7], 3);
slouken@1895
   953
                        }
slouken@1895
   954
                        maskb <<= 1;
slouken@1895
   955
                        datab <<= 1;
slouken@1895
   956
                        dst += 3;
slouken@1895
   957
                    }
slouken@1895
   958
                }
slouken@1895
   959
                dst += dstskip;
slouken@1895
   960
            }
slouken@1895
   961
        }
slouken@1895
   962
        break;
slouken@1895
   963
slouken@1895
   964
    case 4:
slouken@1895
   965
        {
slouken@1895
   966
            Uint32 *dst;
slouken@1895
   967
            int dstskip;
slouken@1895
   968
slouken@1895
   969
            dst = (Uint32 *) screen->pixels +
slouken@1895
   970
                (SDL_cursor->area.y + area->y) * screen->pitch / 4 +
slouken@1895
   971
                SDL_cursor->area.x;
slouken@1895
   972
            dstskip = (screen->pitch / 4) - area->w;
slouken@1895
   973
slouken@1895
   974
            for (h = area->h; h; h--) {
slouken@1895
   975
                for (w = area->w / 8; w; w--) {
slouken@1895
   976
                    maskb = *mask++;
slouken@1895
   977
                    datab = *data++;
slouken@1895
   978
                    for (i = 0; i < 8; ++i) {
slouken@1895
   979
                        if (maskb & 0x80) {
slouken@1895
   980
                            *dst = pixels[datab >> 7];
slouken@1895
   981
                        }
slouken@1895
   982
                        maskb <<= 1;
slouken@1895
   983
                        datab <<= 1;
slouken@1895
   984
                        dst++;
slouken@1895
   985
                    }
slouken@1895
   986
                }
slouken@1895
   987
                dst += dstskip;
slouken@1895
   988
            }
slouken@1895
   989
        }
slouken@1895
   990
        break;
slouken@1895
   991
    }
slouken@1895
   992
}
slouken@1895
   993
slouken@1895
   994
static void
slouken@1895
   995
SDL_DrawCursorSlow(SDL_Surface * screen, SDL_Rect * area)
slouken@1895
   996
{
slouken@1895
   997
    const Uint32 pixels[2] = { 0xFFFFFF, 0x000000 };
slouken@1895
   998
    int h;
slouken@1895
   999
    int x, minx, maxx;
slouken@1895
  1000
    Uint8 *data, datab = 0;
slouken@1895
  1001
    Uint8 *mask, maskb = 0;
slouken@1895
  1002
    Uint8 *dst;
slouken@1895
  1003
    int dstbpp, dstskip;
slouken@1895
  1004
slouken@1895
  1005
    data = SDL_cursor->data + area->y * SDL_cursor->area.w / 8;
slouken@1895
  1006
    mask = SDL_cursor->mask + area->y * SDL_cursor->area.w / 8;
slouken@1895
  1007
    dstbpp = screen->format->BytesPerPixel;
slouken@1895
  1008
    dst = (Uint8 *) screen->pixels +
slouken@1895
  1009
        (SDL_cursor->area.y + area->y) * screen->pitch +
slouken@1895
  1010
        SDL_cursor->area.x * dstbpp;
slouken@1895
  1011
    dstskip = screen->pitch - SDL_cursor->area.w * dstbpp;
slouken@1895
  1012
slouken@1895
  1013
    minx = area->x;
slouken@1895
  1014
    maxx = area->x + area->w;
slouken@1895
  1015
    if (screen->format->BytesPerPixel == 1) {
slouken@1895
  1016
        if (palette_changed) {
slouken@1895
  1017
            pixels8[0] = (Uint8) SDL_MapRGB(screen->format, 255, 255, 255);
slouken@1895
  1018
            pixels8[1] = (Uint8) SDL_MapRGB(screen->format, 0, 0, 0);
slouken@1895
  1019
            palette_changed = 0;
slouken@1895
  1020
        }
slouken@1895
  1021
        for (h = area->h; h; h--) {
slouken@1895
  1022
            for (x = 0; x < SDL_cursor->area.w; ++x) {
slouken@1895
  1023
                if ((x % 8) == 0) {
slouken@1895
  1024
                    maskb = *mask++;
slouken@1895
  1025
                    datab = *data++;
slouken@1895
  1026
                }
slouken@1895
  1027
                if ((x >= minx) && (x < maxx)) {
slouken@1895
  1028
                    if (maskb & 0x80) {
slouken@1895
  1029
                        SDL_memset(dst, pixels8[datab >> 7], dstbpp);
slouken@1895
  1030
                    }
slouken@1895
  1031
                }
slouken@1895
  1032
                maskb <<= 1;
slouken@1895
  1033
                datab <<= 1;
slouken@1895
  1034
                dst += dstbpp;
slouken@1895
  1035
            }
slouken@1895
  1036
            dst += dstskip;
slouken@1895
  1037
        }
slouken@1895
  1038
    } else {
slouken@1895
  1039
        for (h = area->h; h; h--) {
slouken@1895
  1040
            for (x = 0; x < SDL_cursor->area.w; ++x) {
slouken@1895
  1041
                if ((x % 8) == 0) {
slouken@1895
  1042
                    maskb = *mask++;
slouken@1895
  1043
                    datab = *data++;
slouken@1895
  1044
                }
slouken@1895
  1045
                if ((x >= minx) && (x < maxx)) {
slouken@1895
  1046
                    if (maskb & 0x80) {
slouken@1895
  1047
                        SDL_memset(dst, pixels[datab >> 7], dstbpp);
slouken@1895
  1048
                    }
slouken@1895
  1049
                }
slouken@1895
  1050
                maskb <<= 1;
slouken@1895
  1051
                datab <<= 1;
slouken@1895
  1052
                dst += dstbpp;
slouken@1895
  1053
            }
slouken@1895
  1054
            dst += dstskip;
slouken@1895
  1055
        }
slouken@1895
  1056
    }
slouken@1895
  1057
}
slouken@1895
  1058
slouken@1895
  1059
/* This handles the ugly work of converting the saved cursor background from
slouken@1895
  1060
   the pixel format of the shadow surface to that of the video surface.
slouken@1895
  1061
   This is only necessary when blitting from a shadow surface of a different
slouken@1895
  1062
   pixel format than the video surface, and using a software rendered cursor.
slouken@1895
  1063
*/
slouken@1895
  1064
static void
slouken@1895
  1065
SDL_ConvertCursorSave(SDL_Surface * screen, int w, int h)
slouken@1895
  1066
{
slouken@1895
  1067
    SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
  1068
    SDL_BlitInfo info;
slouken@1895
  1069
    SDL_loblit RunBlit;
slouken@1895
  1070
slouken@1895
  1071
    /* Make sure we can steal the blit mapping */
slouken@1895
  1072
    if (screen->map->dst != SDL_VideoSurface) {
slouken@1895
  1073
        return;
slouken@1895
  1074
    }
slouken@1895
  1075
slouken@1895
  1076
    /* Set up the blit information */
slouken@1895
  1077
    info.s_pixels = SDL_cursor->save[1];
slouken@1895
  1078
    info.s_width = w;
slouken@1895
  1079
    info.s_height = h;
slouken@1895
  1080
    info.s_skip = 0;
slouken@1895
  1081
    info.d_pixels = SDL_cursor->save[0];
slouken@1895
  1082
    info.d_width = w;
slouken@1895
  1083
    info.d_height = h;
slouken@1895
  1084
    info.d_skip = 0;
slouken@1895
  1085
    info.aux_data = screen->map->sw_data->aux_data;
slouken@1895
  1086
    info.src = screen->format;
slouken@1895
  1087
    info.table = screen->map->table;
slouken@1895
  1088
    info.dst = SDL_VideoSurface->format;
slouken@1895
  1089
    RunBlit = screen->map->sw_data->blit;
slouken@1895
  1090
slouken@1895
  1091
    /* Run the actual software blit */
slouken@1895
  1092
    RunBlit(&info);
slouken@1895
  1093
}
slouken@1895
  1094
slouken@1895
  1095
void
slouken@1895
  1096
SDL_DrawCursorNoLock(SDL_Surface * screen)
slouken@1895
  1097
{
slouken@1895
  1098
    SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
  1099
    SDL_Rect area;
slouken@1895
  1100
slouken@1895
  1101
    /* Get the mouse rectangle, clipped to the screen */
slouken@1895
  1102
    SDL_MouseRect(&area);
slouken@1895
  1103
    if ((area.w == 0) || (area.h == 0)) {
slouken@1895
  1104
        return;
slouken@1895
  1105
    }
slouken@1895
  1106
slouken@1895
  1107
    /* Copy mouse background */
slouken@1895
  1108
    {
slouken@1895
  1109
        int w, h, screenbpp;
slouken@1895
  1110
        Uint8 *src, *dst;
slouken@1895
  1111
slouken@1895
  1112
        /* Set up the copy pointers */
slouken@1895
  1113
        screenbpp = screen->format->BytesPerPixel;
slouken@1895
  1114
        if ((screen == SDL_VideoSurface) ||
slouken@1895
  1115
            FORMAT_EQUAL(screen->format, SDL_VideoSurface->format)) {
slouken@1895
  1116
            dst = SDL_cursor->save[0];
slouken@1895
  1117
        } else {
slouken@1895
  1118
            dst = SDL_cursor->save[1];
slouken@1895
  1119
        }
slouken@1895
  1120
        src = (Uint8 *) screen->pixels + area.y * screen->pitch +
slouken@1895
  1121
            area.x * screenbpp;
slouken@1895
  1122
slouken@1895
  1123
        /* Perform the copy */
slouken@1895
  1124
        w = area.w * screenbpp;
slouken@1895
  1125
        h = area.h;
slouken@1895
  1126
        while (h--) {
slouken@1895
  1127
            SDL_memcpy(dst, src, w);
slouken@1895
  1128
            dst += w;
slouken@1895
  1129
            src += screen->pitch;
slouken@1895
  1130
        }
slouken@1895
  1131
    }
slouken@1895
  1132
slouken@1895
  1133
    /* Draw the mouse cursor */
slouken@1895
  1134
    area.x -= SDL_cursor->area.x;
slouken@1895
  1135
    area.y -= SDL_cursor->area.y;
slouken@1895
  1136
    if ((area.x == 0) && (area.w == SDL_cursor->area.w)) {
slouken@1895
  1137
        SDL_DrawCursorFast(screen, &area);
slouken@1895
  1138
    } else {
slouken@1895
  1139
        SDL_DrawCursorSlow(screen, &area);
slouken@1895
  1140
    }
slouken@1895
  1141
}
slouken@1895
  1142
slouken@1895
  1143
void
slouken@1895
  1144
SDL_DrawCursor(SDL_Surface * screen)
slouken@1895
  1145
{
slouken@1895
  1146
    /* Lock the screen if necessary */
slouken@1895
  1147
    if (screen == NULL) {
slouken@1895
  1148
        return;
slouken@1895
  1149
    }
slouken@1895
  1150
    if (SDL_MUSTLOCK(screen)) {
slouken@1895
  1151
        if (SDL_LockSurface(screen) < 0) {
slouken@1895
  1152
            return;
slouken@1895
  1153
        }
slouken@1895
  1154
    }
slouken@1895
  1155
slouken@1895
  1156
    SDL_DrawCursorNoLock(screen);
slouken@1895
  1157
slouken@1895
  1158
    /* Unlock the screen and update if necessary */
slouken@1895
  1159
    if (SDL_MUSTLOCK(screen)) {
slouken@1895
  1160
        SDL_UnlockSurface(screen);
slouken@1895
  1161
    }
slouken@1895
  1162
    if ((screen->flags & SDL_SCREEN_SURFACE) &&
slouken@1895
  1163
        !(screen->flags & SDL_HWSURFACE)) {
slouken@1895
  1164
        SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
  1165
        SDL_Window *window;
slouken@1895
  1166
        SDL_Rect area;
slouken@1895
  1167
slouken@1895
  1168
        window = SDL_GetWindowFromSurface(screen);
slouken@1895
  1169
        if (!window) {
slouken@1895
  1170
            return;
slouken@1895
  1171
        }
slouken@1895
  1172
slouken@1895
  1173
        SDL_MouseRect(&area);
slouken@1895
  1174
slouken@1895
  1175
        if (_this->UpdateWindowSurface) {
slouken@1895
  1176
            _this->UpdateWindowSurface(_this, window, 1, &area);
slouken@1895
  1177
        }
slouken@1895
  1178
    }
slouken@1895
  1179
}
slouken@1895
  1180
slouken@1895
  1181
void
slouken@1895
  1182
SDL_EraseCursorNoLock(SDL_Surface * screen)
slouken@1895
  1183
{
slouken@1895
  1184
    SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
  1185
    SDL_Window *window;
slouken@1895
  1186
    SDL_Rect area;
slouken@1895
  1187
slouken@1895
  1188
    /* Get the window associated with the surface */
slouken@1895
  1189
    window = SDL_GetWindowFromSurface(screen);
slouken@1895
  1190
    if (!window || !window->surface) {
slouken@1895
  1191
        return;
slouken@1895
  1192
    }
slouken@1895
  1193
slouken@1895
  1194
    /* Get the mouse rectangle, clipped to the screen */
slouken@1895
  1195
    SDL_MouseRect(&area);
slouken@1895
  1196
    if ((area.w == 0) || (area.h == 0)) {
slouken@1895
  1197
        return;
slouken@1895
  1198
    }
slouken@1895
  1199
slouken@1895
  1200
    /* Copy mouse background */
slouken@1895
  1201
    {
slouken@1895
  1202
        int w, h, screenbpp;
slouken@1895
  1203
        Uint8 *src, *dst;
slouken@1895
  1204
slouken@1895
  1205
        /* Set up the copy pointers */
slouken@1895
  1206
        screenbpp = screen->format->BytesPerPixel;
slouken@1895
  1207
        if ((screen->flags & SDL_SCREEN_SURFACE) ||
slouken@1895
  1208
            FORMAT_EQUAL(screen->format, window->surface->format)) {
slouken@1895
  1209
            src = SDL_cursor->save[0];
slouken@1895
  1210
        } else {
slouken@1895
  1211
            src = SDL_cursor->save[1];
slouken@1895
  1212
        }
slouken@1895
  1213
        dst = (Uint8 *) screen->pixels + area.y * screen->pitch +
slouken@1895
  1214
            area.x * screenbpp;
slouken@1895
  1215
slouken@1895
  1216
        /* Perform the copy */
slouken@1895
  1217
        w = area.w * screenbpp;
slouken@1895
  1218
        h = area.h;
slouken@1895
  1219
        while (h--) {
slouken@1895
  1220
            SDL_memcpy(dst, src, w);
slouken@1895
  1221
            src += w;
slouken@1895
  1222
            dst += screen->pitch;
slouken@1895
  1223
        }
slouken@1895
  1224
slouken@1895
  1225
        /* Perform pixel conversion on cursor background */
slouken@1895
  1226
        if (src > SDL_cursor->save[1]) {
slouken@1895
  1227
            SDL_ConvertCursorSave(screen, area.w, area.h);
slouken@1895
  1228
        }
slouken@1895
  1229
    }
slouken@1895
  1230
}
slouken@1895
  1231
slouken@1895
  1232
void
slouken@1895
  1233
SDL_EraseCursor(SDL_Surface * screen)
slouken@1895
  1234
{
slouken@1895
  1235
    /* Lock the screen if necessary */
slouken@1895
  1236
    if (screen == NULL) {
slouken@1895
  1237
        return;
slouken@1895
  1238
    }
slouken@1895
  1239
    if (SDL_MUSTLOCK(screen)) {
slouken@1895
  1240
        if (SDL_LockSurface(screen) < 0) {
slouken@1895
  1241
            return;
slouken@1895
  1242
        }
slouken@1895
  1243
    }
slouken@1895
  1244
slouken@1895
  1245
    SDL_EraseCursorNoLock(screen);
slouken@1895
  1246
slouken@1895
  1247
    /* Unlock the screen and update if necessary */
slouken@1895
  1248
    if (SDL_MUSTLOCK(screen)) {
slouken@1895
  1249
        SDL_UnlockSurface(screen);
slouken@1895
  1250
    }
slouken@1895
  1251
    if ((screen->flags & SDL_SCREEN_SURFACE) &&
slouken@1895
  1252
        !(screen->flags & SDL_HWSURFACE)) {
slouken@1895
  1253
        SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
  1254
        SDL_Window *window;
slouken@1895
  1255
        SDL_Rect area;
slouken@1895
  1256
slouken@1895
  1257
        window = SDL_GetWindowFromSurface(screen);
slouken@1895
  1258
        if (!window) {
slouken@1895
  1259
            return;
slouken@1895
  1260
        }
slouken@1895
  1261
slouken@1895
  1262
        SDL_MouseRect(&area);
slouken@1895
  1263
slouken@1895
  1264
        if (_this->UpdateWindowSurface) {
slouken@1895
  1265
            _this->UpdateWindowSurface(_this, window, 1, &area);
slouken@1895
  1266
        }
slouken@1895
  1267
    }
slouken@1895
  1268
}
slouken@1895
  1269
slouken@1895
  1270
/* Reset the cursor on video mode change
slouken@1895
  1271
   FIXME:  Keep track of all cursors, and reset them all.
slouken@1895
  1272
 */
slouken@1895
  1273
void
slouken@1895
  1274
SDL_ResetCursor(void)
slouken@1895
  1275
{
slouken@1895
  1276
    int savelen;
slouken@1895
  1277
slouken@1895
  1278
    if (SDL_cursor) {
slouken@1895
  1279
        savelen = SDL_cursor->area.w * 4 * SDL_cursor->area.h;
slouken@1895
  1280
        SDL_cursor->area.x = 0;
slouken@1895
  1281
        SDL_cursor->area.y = 0;
slouken@1895
  1282
        SDL_memset(SDL_cursor->save[0], 0, savelen);
slouken@1895
  1283
    }
slouken@1895
  1284
}
slouken@1895
  1285
#endif
slouken@1895
  1286
slouken@1895
  1287
struct private_yuvhwdata
slouken@1895
  1288
{
slouken@1895
  1289
    Uint16 pitches[3];
slouken@1895
  1290
    Uint8 *planes[3];
slouken@1895
  1291
slouken@1895
  1292
    SDL_TextureID textureID;
slouken@1895
  1293
};
slouken@1895
  1294
slouken@1895
  1295
SDL_Overlay *
slouken@1895
  1296
SDL_CreateYUVOverlay(int w, int h, Uint32 format, SDL_Surface * display)
slouken@1895
  1297
{
slouken@1895
  1298
    SDL_Overlay *overlay;
slouken@1895
  1299
    Uint32 texture_format;
slouken@1895
  1300
slouken@1895
  1301
    if ((display->flags & SDL_OPENGL) == SDL_OPENGL) {
slouken@1895
  1302
        SDL_SetError("YUV overlays are not supported in OpenGL mode");
slouken@1895
  1303
        return NULL;
slouken@1895
  1304
    }
slouken@1895
  1305
slouken@1895
  1306
    if (display != SDL_PublicSurface) {
slouken@1895
  1307
        SDL_SetError("YUV display is only supported on the screen surface");
slouken@1895
  1308
        return NULL;
slouken@1895
  1309
    }
slouken@1895
  1310
slouken@1895
  1311
    switch (format) {
slouken@1895
  1312
    case SDL_YV12_OVERLAY:
slouken@1965
  1313
        texture_format = SDL_PIXELFORMAT_YV12;
slouken@1895
  1314
        break;
slouken@1895
  1315
    case SDL_IYUV_OVERLAY:
slouken@1965
  1316
        texture_format = SDL_PIXELFORMAT_IYUV;
slouken@1895
  1317
        break;
slouken@1895
  1318
    case SDL_YUY2_OVERLAY:
slouken@1965
  1319
        texture_format = SDL_PIXELFORMAT_YUY2;
slouken@1895
  1320
        break;
slouken@1895
  1321
    case SDL_UYVY_OVERLAY:
slouken@1965
  1322
        texture_format = SDL_PIXELFORMAT_UYVY;
slouken@1895
  1323
        break;
slouken@1895
  1324
    case SDL_YVYU_OVERLAY:
slouken@1965
  1325
        texture_format = SDL_PIXELFORMAT_YVYU;
slouken@1895
  1326
        break;
slouken@1895
  1327
    default:
slouken@1895
  1328
        SDL_SetError("Unknown YUV format");
slouken@1895
  1329
        return NULL;
slouken@1895
  1330
    }
slouken@1895
  1331
slouken@1895
  1332
    overlay = (SDL_Overlay *) SDL_malloc(sizeof(*overlay));
slouken@1895
  1333
    if (!overlay) {
slouken@1895
  1334
        SDL_OutOfMemory();
slouken@1895
  1335
        return NULL;
slouken@1895
  1336
    }
slouken@1895
  1337
    SDL_zerop(overlay);
slouken@1895
  1338
slouken@1895
  1339
    overlay->hwdata =
slouken@1895
  1340
        (struct private_yuvhwdata *) SDL_malloc(sizeof(*overlay->hwdata));
slouken@1895
  1341
    if (!overlay->hwdata) {
slouken@1895
  1342
        SDL_free(overlay);
slouken@1895
  1343
        SDL_OutOfMemory();
slouken@1895
  1344
        return NULL;
slouken@1895
  1345
    }
slouken@1895
  1346
slouken@1895
  1347
    overlay->format = format;
slouken@1895
  1348
    overlay->w = w;
slouken@1895
  1349
    overlay->h = h;
slouken@1895
  1350
    if (format == SDL_YV12_OVERLAY || format == SDL_IYUV_OVERLAY) {
slouken@1895
  1351
        overlay->planes = 3;
slouken@1895
  1352
    } else {
slouken@1895
  1353
        overlay->planes = 1;
slouken@1895
  1354
    }
slouken@1895
  1355
    overlay->pitches = overlay->hwdata->pitches;
slouken@1895
  1356
    overlay->pixels = overlay->hwdata->planes;
slouken@1895
  1357
slouken@1895
  1358
    switch (format) {
slouken@1895
  1359
    case SDL_YV12_OVERLAY:
slouken@1895
  1360
    case SDL_IYUV_OVERLAY:
slouken@1895
  1361
        overlay->pitches[0] = overlay->w;
slouken@1895
  1362
        overlay->pitches[1] = overlay->w / 2;
slouken@1895
  1363
        overlay->pitches[2] = overlay->w / 2;
slouken@1895
  1364
        break;
slouken@1895
  1365
    case SDL_YUY2_OVERLAY:
slouken@1895
  1366
    case SDL_UYVY_OVERLAY:
slouken@1895
  1367
    case SDL_YVYU_OVERLAY:
slouken@1895
  1368
        overlay->pitches[0] = overlay->w * 2;
slouken@1895
  1369
        break;
slouken@1895
  1370
    }
slouken@1895
  1371
slouken@1895
  1372
    overlay->hwdata->textureID =
slouken@1965
  1373
        SDL_CreateTexture(texture_format, SDL_TEXTUREACCESS_LOCAL, w, h);
slouken@1895
  1374
    if (!overlay->hwdata->textureID) {
slouken@1895
  1375
        SDL_FreeYUVOverlay(overlay);
slouken@1895
  1376
        return NULL;
slouken@1895
  1377
    }
slouken@1895
  1378
slouken@1895
  1379
    return overlay;
slouken@1895
  1380
}
slouken@1895
  1381
slouken@1895
  1382
int
slouken@1895
  1383
SDL_LockYUVOverlay(SDL_Overlay * overlay)
slouken@1895
  1384
{
slouken@1895
  1385
    void *pixels;
slouken@1895
  1386
    int pitch;
slouken@1895
  1387
    if (SDL_LockTexture(overlay->hwdata->textureID, NULL, 1, &pixels, &pitch)
slouken@1895
  1388
        < 0) {
slouken@1895
  1389
        return -1;
slouken@1895
  1390
    }
slouken@1895
  1391
    switch (overlay->format) {
slouken@1895
  1392
    case SDL_YV12_OVERLAY:
slouken@1895
  1393
    case SDL_IYUV_OVERLAY:
slouken@1895
  1394
        overlay->pixels[0] = (Uint8 *) pixels;
slouken@1895
  1395
        overlay->pixels[1] =
slouken@1895
  1396
            overlay->pixels[0] + overlay->pitches[0] * overlay->h;
slouken@1895
  1397
        overlay->pixels[2] =
slouken@1895
  1398
            overlay->pixels[1] + overlay->pitches[1] * overlay->h;
slouken@1895
  1399
        break;
slouken@1895
  1400
    case SDL_YUY2_OVERLAY:
slouken@1895
  1401
    case SDL_UYVY_OVERLAY:
slouken@1895
  1402
    case SDL_YVYU_OVERLAY:
slouken@1895
  1403
        overlay->pixels[0] = (Uint8 *) pixels;
slouken@1895
  1404
        break;
slouken@1895
  1405
    }
slouken@1895
  1406
    return 0;
slouken@1895
  1407
}
slouken@1895
  1408
slouken@1895
  1409
void
slouken@1895
  1410
SDL_UnlockYUVOverlay(SDL_Overlay * overlay)
slouken@1895
  1411
{
slouken@1895
  1412
    SDL_UnlockTexture(overlay->hwdata->textureID);
slouken@1895
  1413
}
slouken@1895
  1414
slouken@1895
  1415
int
slouken@1895
  1416
SDL_DisplayYUVOverlay(SDL_Overlay * overlay, SDL_Rect * dstrect)
slouken@1895
  1417
{
slouken@1895
  1418
    if (SDL_RenderCopy(overlay->hwdata->textureID, NULL, dstrect,
slouken@1965
  1419
                       SDL_TEXTUREBLENDMODE_NONE,
slouken@1965
  1420
                       SDL_TEXTURESCALEMODE_FAST) < 0) {
slouken@1895
  1421
        return -1;
slouken@1895
  1422
    }
slouken@1895
  1423
    SDL_RenderPresent();
slouken@1895
  1424
    return 0;
slouken@1895
  1425
}
slouken@1895
  1426
slouken@1895
  1427
void
slouken@1895
  1428
SDL_FreeYUVOverlay(SDL_Overlay * overlay)
slouken@1895
  1429
{
slouken@1895
  1430
    if (overlay) {
slouken@1895
  1431
        if (overlay->hwdata) {
slouken@1895
  1432
            if (overlay->hwdata->textureID) {
slouken@1895
  1433
                SDL_DestroyTexture(overlay->hwdata->textureID);
slouken@1895
  1434
            }
slouken@1895
  1435
            SDL_free(overlay->hwdata);
slouken@1895
  1436
        }
slouken@1895
  1437
        SDL_free(overlay);
slouken@1895
  1438
    }
slouken@1895
  1439
}
slouken@1895
  1440
slouken@1912
  1441
void
slouken@1912
  1442
SDL_GL_SwapBuffers(void)
slouken@1912
  1443
{
slouken@1912
  1444
    SDL_GL_SwapWindow(SDL_VideoWindow);
slouken@1912
  1445
}
slouken@1912
  1446
slouken@1895
  1447
/* vi: set ts=4 sw=4 expandtab: */