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SDL_video.c
1834 lines (1601 loc) · 44 KB
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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,
but WITHOUT ANY WARRANTY; without even the implied warranty of
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
License along with this library; if not, write to the Free Software
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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/* The high-level video driver subsystem */
#include "SDL.h"
#include "SDL_sysvideo.h"
#include "SDL_blit.h"
#include "SDL_pixels_c.h"
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#include "SDL_renderer_sw.h"
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#include "../events/SDL_sysevents.h"
#include "../events/SDL_events_c.h"
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/* Available video drivers */
static VideoBootStrap *bootstrap[] = {
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#if SDL_VIDEO_DRIVER_QUARTZ
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&QZ_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_X11
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&X11_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_DGA
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&DGA_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_NANOX
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&NX_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_IPOD
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&iPod_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_QTOPIA
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&Qtopia_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_WSCONS
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&WSCONS_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_FBCON
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&FBCON_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_DIRECTFB
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&DirectFB_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_PS2GS
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&PS2GS_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_GGI
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&GGI_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_VGL
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&VGL_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_SVGALIB
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&SVGALIB_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_GAPI
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&GAPI_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_WINDIB
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&WINDIB_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_DDRAW
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&DIRECTX_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_BWINDOW
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&BWINDOW_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_TOOLBOX
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&TOOLBOX_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_DRAWSPROCKET
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&DSp_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_CYBERGRAPHICS
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&CGX_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_PHOTON
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&ph_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_EPOC
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&EPOC_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_XBIOS
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&XBIOS_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_GEM
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&GEM_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_PICOGUI
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&PG_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_DC
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&DC_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_RISCOS
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&RISCOS_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_OS2FS
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&OS2FSLib_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_AALIB
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&AALIB_bootstrap,
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#endif
#if SDL_VIDEO_DRIVER_DUMMY
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&DUMMY_bootstrap,
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#endif
#if SDL_VIDEO_DRIVER_GLSDL
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&glSDL_bootstrap,
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#endif
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NULL
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};
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static SDL_VideoDevice *_this = NULL;
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/* Various local functions */
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int SDL_VideoInit(const char *driver_name, Uint32 flags);
void SDL_VideoQuit(void);
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static int
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cmpmodes(const void *A, const void *B)
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{
SDL_DisplayMode a = *(const SDL_DisplayMode *) A;
SDL_DisplayMode b = *(const SDL_DisplayMode *) B;
if (a.w != b.w) {
return b.w - a.w;
}
if (a.h != b.h) {
return b.h - a.h;
}
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if (SDL_BITSPERPIXEL(a.format) != SDL_BITSPERPIXEL(b.format)) {
return SDL_BITSPERPIXEL(b.format) - SDL_BITSPERPIXEL(a.format);
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}
if (a.refresh_rate != b.refresh_rate) {
return b.refresh_rate - a.refresh_rate;
}
return 0;
}
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int
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SDL_GetNumVideoDrivers(void)
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{
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return SDL_arraysize(bootstrap) - 1;
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}
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const char *
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SDL_GetVideoDriver(int index)
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{
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if (index >= 0 && index < SDL_GetNumVideoDrivers()) {
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return bootstrap[index]->name;
}
return NULL;
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}
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/*
* Initialize the video and event subsystems -- determine native pixel format
*/
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int
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SDL_VideoInit(const char *driver_name, Uint32 flags)
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{
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SDL_VideoDevice *video;
int index;
int i;
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
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/* Toggle the event thread flags, based on OS requirements */
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#if defined(MUST_THREAD_EVENTS)
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flags |= SDL_INIT_EVENTTHREAD;
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#elif defined(CANT_THREAD_EVENTS)
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if ((flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD) {
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SDL_SetError("OS doesn't support threaded events");
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return -1;
}
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#endif
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/* Check to make sure we don't overwrite '_this' */
if (_this != NULL) {
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SDL_VideoQuit();
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}
/* Select the proper video driver */
index = 0;
video = NULL;
if (driver_name != NULL) {
for (i = 0; bootstrap[i]; ++i) {
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if (SDL_strncmp(bootstrap[i]->name, driver_name,
SDL_strlen(bootstrap[i]->name)) == 0) {
if (bootstrap[i]->available()) {
video = bootstrap[i]->create(index);
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}
break;
}
}
} else {
for (i = 0; bootstrap[i]; ++i) {
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if (bootstrap[i]->available()) {
video = bootstrap[i]->create(index);
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if (video != NULL) {
break;
}
}
}
}
if (video == NULL) {
if (driver_name) {
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SDL_SetError("%s not available", driver_name);
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} else {
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SDL_SetError("No available video device");
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}
return -1;
}
_this = video;
_this->name = bootstrap[i]->name;
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_this->next_object_id = 1;
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/* Set some very sane GL defaults */
_this->gl_config.driver_loaded = 0;
_this->gl_config.dll_handle = NULL;
_this->gl_config.red_size = 3;
_this->gl_config.green_size = 3;
_this->gl_config.blue_size = 2;
_this->gl_config.alpha_size = 0;
_this->gl_config.buffer_size = 0;
_this->gl_config.depth_size = 16;
_this->gl_config.stencil_size = 0;
_this->gl_config.double_buffer = 1;
_this->gl_config.accum_red_size = 0;
_this->gl_config.accum_green_size = 0;
_this->gl_config.accum_blue_size = 0;
_this->gl_config.accum_alpha_size = 0;
_this->gl_config.stereo = 0;
_this->gl_config.multisamplebuffers = 0;
_this->gl_config.multisamplesamples = 0;
_this->gl_config.accelerated = -1; /* not known, don't set */
_this->gl_config.swap_control = -1; /* not known, don't set */
/* Initialize the video subsystem */
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if (_this->VideoInit(_this) < 0) {
SDL_VideoQuit();
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return -1;
}
/* Make sure some displays were added */
if (_this->num_displays == 0) {
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SDL_SetError("The video driver did not add any displays");
SDL_VideoQuit();
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return (-1);
}
/* Sort the video modes */
for (i = 0; i < _this->num_displays; ++i) {
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SDL_qsort(_this->displays[i].display_modes,
_this->displays[i].num_display_modes,
sizeof(SDL_DisplayMode), cmpmodes);
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}
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/* The software renderer is always available */
for (i = 0; i < _this->num_displays; ++i) {
if (_this->displays[i].num_render_drivers > 0) {
SDL_AddRenderDriver(i, &SDL_SW_RenderDriver);
}
}
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/* Start the event loop */
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if (SDL_StartEventLoop(flags) < 0) {
SDL_VideoQuit();
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return -1;
}
/* We're ready to go! */
return 0;
}
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const char *
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SDL_GetCurrentVideoDriver()
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{
if (!_this) {
return NULL;
}
return _this->name;
}
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SDL_VideoDevice *
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SDL_GetVideoDevice()
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{
return _this;
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}
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int
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SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode)
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{
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SDL_VideoDisplay display;
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SDL_zero(display);
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if (desktop_mode) {
display.desktop_mode = *desktop_mode;
}
display.current_mode = display.desktop_mode;
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return SDL_AddVideoDisplay(&display);
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}
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int
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SDL_AddVideoDisplay(const SDL_VideoDisplay * display)
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{
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SDL_VideoDisplay *displays;
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int index = -1;
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displays =
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SDL_realloc(_this->displays,
(_this->num_displays + 1) * sizeof(*displays));
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if (displays) {
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index = _this->num_displays++;
displays[index] = *display;
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_this->displays = displays;
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} else {
SDL_OutOfMemory();
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}
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return index;
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}
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int
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SDL_GetNumVideoDisplays(void)
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{
if (!_this) {
return 0;
}
return _this->num_displays;
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}
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int
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SDL_SelectVideoDisplay(int index)
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{
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if (!_this) {
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SDL_SetError("Video subsystem has not been initialized");
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return (-1);
}
if (index >= 0) {
if (index >= _this->num_displays) {
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SDL_SetError("index must be in the range 0 - %d",
_this->num_displays - 1);
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return -1;
}
_this->current_display = index;
}
return _this->current_display;
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}
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void
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SDL_AddDisplayMode(int displayIndex, const SDL_DisplayMode * mode)
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{
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SDL_VideoDisplay *display = &_this->displays[displayIndex];
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SDL_DisplayMode *modes;
int i, nmodes;
/* Make sure we don't already have the mode in the list */
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modes = display->display_modes;
nmodes = display->num_display_modes;
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for (i = 0; i < nmodes; ++i) {
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if (SDL_memcmp(mode, &modes[i], sizeof(*mode)) == 0) {
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return;
}
}
/* Go ahead and add the new mode */
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modes = SDL_realloc(modes, (nmodes + 1) * sizeof(*mode));
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if (modes) {
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display->display_modes = modes;
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modes[nmodes] = *mode;
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display->num_display_modes++;
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}
}
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int
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SDL_GetNumDisplayModes()
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{
if (_this) {
return SDL_CurrentDisplay.num_display_modes;
}
return 0;
}
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const SDL_DisplayMode *
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SDL_GetDisplayMode(int index)
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{
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if (index < 0 || index >= SDL_GetNumDisplayModes()) {
SDL_SetError("index must be in the range of 0 - %d",
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SDL_GetNumDisplayModes() - 1);
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return NULL;
}
return &SDL_CurrentDisplay.display_modes[index];
}
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const SDL_DisplayMode *
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SDL_GetDesktopDisplayMode(void)
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{
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if (_this) {
return &SDL_CurrentDisplay.desktop_mode;
}
return NULL;
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}
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const SDL_DisplayMode *
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SDL_GetCurrentDisplayMode(void)
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{
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if (_this) {
return &SDL_CurrentDisplay.current_mode;
}
return NULL;
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}
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SDL_DisplayMode *
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SDL_GetClosestDisplayMode(const SDL_DisplayMode * mode,
SDL_DisplayMode * closest)
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{
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Uint32 target_format;
int target_refresh_rate;
int i;
SDL_DisplayMode *current, *match;
if (!_this || !mode || !closest) {
return NULL;
}
/* Default to the desktop format */
if (mode->format) {
target_format = mode->format;
} else {
target_format = SDL_CurrentDisplay.desktop_mode.format;
}
/* Default to the desktop refresh rate */
if (mode->refresh_rate) {
target_refresh_rate = mode->refresh_rate;
} else {
target_refresh_rate = SDL_CurrentDisplay.desktop_mode.refresh_rate;
}
match = NULL;
for (i = 0; i < SDL_CurrentDisplay.num_display_modes; ++i) {
current = &SDL_CurrentDisplay.display_modes[i];
if ((current->w && current->h) &&
(current->w < mode->w || current->h < mode->h)) {
/* Out of sorted modes large enough here */
break;
}
if (!match || current->w < match->w || current->h < match->h) {
match = current;
continue;
}
if (current->format != match->format) {
/* Sorted highest depth to lowest */
if (current->format == target_format ||
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(SDL_BITSPERPIXEL(current->format) >=
SDL_BITSPERPIXEL(target_format)
&& SDL_PIXELTYPE(current->format) ==
SDL_PIXELTYPE(target_format))) {
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match = current;
}
continue;
}
if (current->refresh_rate != match->refresh_rate) {
/* Sorted highest refresh to lowest */
if (current->refresh_rate >= target_refresh_rate) {
match = current;
}
}
}
if (match) {
if (match->format) {
closest->format = match->format;
} else {
closest->format = mode->format;
}
if (match->w && match->h) {
closest->w = match->w;
closest->h = match->h;
} else {
closest->w = mode->w;
closest->h = mode->h;
}
if (match->refresh_rate) {
closest->refresh_rate = match->refresh_rate;
} else {
closest->refresh_rate = mode->refresh_rate;
}
return closest;
}
return NULL;
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}
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int
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SDL_SetDisplayMode(const SDL_DisplayMode * mode)
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{
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SDL_VideoDisplay *display;
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SDL_DisplayMode display_mode;
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int i;
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if (!_this) {
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SDL_SetError("Video subsystem has not been initialized");
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return -1;
}
/* Make sure there's an actual display mode to set */
if (!mode) {
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SDL_SetError("No mode passed to SDL_SetDisplayMode");
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return -1;
}
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display = &SDL_CurrentDisplay;
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display_mode = *mode;
/* Default to the current mode */
if (!display_mode.format) {
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display_mode.format = display->current_mode.format;
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}
if (!display_mode.w) {
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display_mode.w = display->current_mode.w;
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}
if (!display_mode.h) {
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display_mode.h = display->current_mode.h;
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}
if (!display_mode.refresh_rate) {
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display_mode.refresh_rate = display->current_mode.refresh_rate;
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}
/* Get a good video mode, the closest one possible */
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if (!SDL_GetClosestDisplayMode(&display_mode, &display_mode)) {
SDL_SetError("No video mode large enough for %dx%d",
display_mode.w, display_mode.h);
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return -1;
}
/* See if there's anything left to do */
if (SDL_memcmp
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(&display_mode, SDL_GetCurrentDisplayMode(),
sizeof(display_mode)) == 0) {
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return 0;
}
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return _this->SetDisplayMode(_this, &display_mode);
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}
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SDL_WindowID
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SDL_CreateWindow(const char *title, int x, int y, int w, int h, Uint32 flags)
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{
const Uint32 allowed_flags = (SDL_WINDOW_FULLSCREEN |
SDL_WINDOW_BORDERLESS |
SDL_WINDOW_SHOWN |
SDL_WINDOW_OPENGL |
SDL_WINDOW_RESIZABLE |
SDL_WINDOW_MAXIMIZED |
SDL_WINDOW_MINIMIZED |
SDL_WINDOW_INPUT_GRABBED);
SDL_Window window;
int num_windows;
SDL_Window *windows;
if (!_this) {
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SDL_SetError("Video subsystem has not been initialized");
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return 0;
}
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SDL_zero(window);
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window.id = _this->next_object_id++;
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window.title = title ? SDL_strdup(title) : NULL;
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window.x = x;
window.y = y;
window.w = w;
window.h = h;
window.flags = (flags & allowed_flags);
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window.display = &SDL_CurrentDisplay;
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if (_this->CreateWindow && _this->CreateWindow(_this, &window) < 0) {
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if (window.title) {
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SDL_free(window.title);
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}
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return 0;
}
num_windows = SDL_CurrentDisplay.num_windows;
windows =
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SDL_realloc(SDL_CurrentDisplay.windows,
(num_windows + 1) * sizeof(*windows));
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if (!windows) {
if (_this->DestroyWindow) {
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_this->DestroyWindow(_this, &window);
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}
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if (window.title) {
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SDL_free(window.title);
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}
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return 0;
}
windows[num_windows] = window;
SDL_CurrentDisplay.windows = windows;
SDL_CurrentDisplay.num_windows++;
return window.id;
}
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SDL_WindowID
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SDL_CreateWindowFrom(void *data)
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{
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SDL_Window window;
int num_windows;
SDL_Window *windows;
if (!_this) {
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SDL_SetError("Video subsystem has not been initialized");
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return (0);
}
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SDL_zero(window);
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window.id = _this->next_object_id++;
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window.display = &SDL_CurrentDisplay;
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if (!_this->CreateWindowFrom ||
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_this->CreateWindowFrom(_this, &window, data) < 0) {
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return 0;
}
num_windows = SDL_CurrentDisplay.num_windows;
windows =
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SDL_realloc(SDL_CurrentDisplay.windows,
(num_windows + 1) * sizeof(*windows));
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if (!windows) {
if (_this->DestroyWindow) {
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_this->DestroyWindow(_this, &window);
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}
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if (window.title) {
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SDL_free(window.title);
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}
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return 0;
}
windows[num_windows] = window;
SDL_CurrentDisplay.windows = windows;
SDL_CurrentDisplay.num_windows++;
return window.id;
}
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static __inline__ SDL_Window *
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SDL_GetWindowFromID(SDL_WindowID windowID)
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{
int i, j;
if (!_this) {
return NULL;
}
for (i = 0; i < _this->num_displays; ++i) {
SDL_VideoDisplay *display = &_this->displays[i];
for (j = 0; j < display->num_windows; ++j) {
SDL_Window *window = &display->windows[j];
if (window->id == windowID) {
return window;
}
}
}
return NULL;
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}
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Uint32
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SDL_GetWindowFlags(SDL_WindowID windowID)
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{
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SDL_Window *window = SDL_GetWindowFromID(windowID);
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if (!window) {
return 0;
}
return window->flags;
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}
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void
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SDL_SetWindowTitle(SDL_WindowID windowID, const char *title)
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{
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SDL_Window *window = SDL_GetWindowFromID(windowID);
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if (!window) {
return;
}
if (window->title) {
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SDL_free(window->title);
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}
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window->title = SDL_strdup(title);
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if (_this->SetWindowTitle) {
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_this->SetWindowTitle(_this, window);
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}
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}
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const char *
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SDL_GetWindowTitle(SDL_WindowID windowID)
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{
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SDL_Window *window = SDL_GetWindowFromID(windowID);
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719
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721
if (!window) {
return NULL;
}
return window->title;
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723
}
724
void
725
SDL_SetWindowData(SDL_WindowID windowID, void *userdata)
726
{
727
SDL_Window *window = SDL_GetWindowFromID(windowID);
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729
730
731
732
if (!window) {
return;
}
window->userdata = userdata;
733
734
}
735
void *
736
SDL_GetWindowData(SDL_WindowID windowID)
737
{
738
SDL_Window *window = SDL_GetWindowFromID(windowID);
739
740
741
742
743
if (!window) {
return NULL;
}
return window->userdata;
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745
}
746
void
747
SDL_SetWindowPosition(SDL_WindowID windowID, int x, int y)
748
{
749
SDL_Window *window = SDL_GetWindowFromID(windowID);
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751
752
753
754
755
756
757
758
if (!window) {
return;
}
window->x = x;
window->y = y;
if (_this->SetWindowPosition) {
759
_this->SetWindowPosition(_this, window);
760
}
761
762
}
763
void
764
SDL_GetWindowPosition(SDL_WindowID windowID, int *x, int *y)
765
{
766
SDL_Window *window = SDL_GetWindowFromID(windowID);
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769
770
771
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if (!window) {
return;
}
if (x) {
*x = window->x;
}
if (y) {
*y = window->y;
}
777
778
}
779
void
780
SDL_SetWindowSize(SDL_WindowID windowID, int w, int h)
781
{
782
SDL_Window *window = SDL_GetWindowFromID(windowID);
783
784
785
786
787
788
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791
if (!window) {
return;
}
window->w = w;
window->h = h;
if (_this->SetWindowSize) {
792
_this->SetWindowSize(_this, window);
793
}
794
795
}
796
void
797
SDL_GetWindowSize(SDL_WindowID windowID, int *w, int *h)
798
{
799
SDL_Window *window = SDL_GetWindowFromID(windowID);
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801
802
803
804
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806
807
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809
if (!window) {
return;
}
if (w) {
*w = window->w;
}
if (h) {
*h = window->h;
}
810
811
}
812
void
813
SDL_ShowWindow(SDL_WindowID windowID)
814
{
815
SDL_Window *window = SDL_GetWindowFromID(windowID);
816
817
818
819
820
821
822
823
if (!window || (window->flags & SDL_WINDOW_SHOWN)) {
return;
}
window->flags |= SDL_WINDOW_SHOWN;
if (_this->ShowWindow) {
824
_this->ShowWindow(_this, window);
825
}
826
827
}
828
void
829
SDL_HideWindow(SDL_WindowID windowID)
830
{
831
SDL_Window *window = SDL_GetWindowFromID(windowID);
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833
834
835
836
837
838
839
if (!window || !(window->flags & SDL_WINDOW_SHOWN)) {
return;
}
window->flags &= ~SDL_WINDOW_SHOWN;
if (_this->HideWindow) {
840
_this->HideWindow(_this, window);
841
}
842
843
}
844
void
845
SDL_RaiseWindow(SDL_WindowID windowID)
846
{
847
SDL_Window *window = SDL_GetWindowFromID(windowID);
848
849
850
851
852
853
if (!window) {
return;
}
if (_this->RaiseWindow) {
854
_this->RaiseWindow(_this, window);
855
}
856
857
}
858
void
859
SDL_MaximizeWindow(SDL_WindowID windowID)
860
{
861
SDL_Window *window = SDL_GetWindowFromID(windowID);
862
863
864
865
866
867
868
869
if (!window || (window->flags & SDL_WINDOW_MAXIMIZED)) {
return;
}
window->flags |= SDL_WINDOW_MAXIMIZED;
if (_this->MaximizeWindow) {
870
_this->MaximizeWindow(_this, window);
871
}
872
873
}
874
void
875
SDL_MinimizeWindow(SDL_WindowID windowID)
876
{
877
SDL_Window *window = SDL_GetWindowFromID(windowID);
878
879
880
881
882
883
884
885
if (!window || (window->flags & SDL_WINDOW_MINIMIZED)) {
return;
}
window->flags |= SDL_WINDOW_MINIMIZED;
if (_this->MinimizeWindow) {
886
_this->MinimizeWindow(_this, window);
887
}
888
889
}
890
void
891
SDL_RestoreWindow(SDL_WindowID windowID)
892
{
893
SDL_Window *window = SDL_GetWindowFromID(windowID);
894
895
896
897
898
899
900
901
902
if (!window
|| (window->flags & (SDL_WINDOW_MAXIMIZED | SDL_WINDOW_MINIMIZED))) {
return;
}
window->flags &= ~(SDL_WINDOW_MAXIMIZED | SDL_WINDOW_MINIMIZED);
if (_this->RestoreWindow) {
903
_this->RestoreWindow(_this, window);
904
}
905
}
906
907
void
908
SDL_SetWindowGrab(SDL_WindowID windowID, int mode)
909
{
910
SDL_Window *window = SDL_GetWindowFromID(windowID);
911
912
913
914
915
916
917
918
919
920
921
922
if (!window || (!!mode == !!(window->flags & SDL_WINDOW_INPUT_GRABBED))) {
return;
}
if (mode) {
window->flags |= SDL_WINDOW_INPUT_GRABBED;
} else {
window->flags &= ~SDL_WINDOW_INPUT_GRABBED;
}
if (_this->SetWindowGrab) {
923
_this->SetWindowGrab(_this, window);
924
}
925
926
}
927
int
928
SDL_GetWindowGrab(SDL_WindowID windowID)
929
{
930
SDL_Window *window = SDL_GetWindowFromID(windowID);
931
932
933
934
935
936
937
938
939
if (!window) {
return 0;
}
return ((window->flags & SDL_WINDOW_INPUT_GRABBED) != 0);
}
void
940
SDL_DestroyWindow(SDL_WindowID windowID)
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
{
int i, j;
if (!_this) {
return;
}
for (i = 0; i < _this->num_displays; ++i) {
SDL_VideoDisplay *display = &_this->displays[i];
for (j = 0; j < display->num_windows; ++j) {
SDL_Window *window = &display->windows[j];
if (window->id != windowID) {
continue;
}
if (window->flags & SDL_WINDOW_INPUT_GRABBED) {
window->flags &= ~SDL_WINDOW_INPUT_GRABBED;
957
_this->SetWindowGrab(_this, window);
958
}
959
960
if (window->renderer) {
SDL_DestroyRenderer(window->id);
961
962
}
if (_this->DestroyWindow) {
963
_this->DestroyWindow(_this, window);
964
965
}
if (window->title) {
966
SDL_free(window->title);
967
968
}
if (window->gamma) {
969
SDL_free(window->gamma);
970
971
}
if (j != display->num_windows - 1) {
972
973
974
SDL_memcpy(&display->windows[i],
&display->windows[i + 1],
(display->num_windows - i - 1) * sizeof(*window));
975
976
977
978
979
980
981
}
--display->num_windows;
return;
}
}
}
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
void
SDL_AddRenderDriver(int displayIndex, const SDL_RenderDriver * driver)
{
SDL_VideoDisplay *display = &_this->displays[displayIndex];
SDL_RenderDriver *render_drivers;
render_drivers =
SDL_realloc(display->render_drivers,
(display->num_render_drivers +
1) * sizeof(*render_drivers));
if (render_drivers) {
render_drivers[display->num_render_drivers] = *driver;
display->render_drivers = render_drivers;
display->num_render_drivers++;
}
}
int
SDL_GetNumRenderers(void)