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5402 lines (4606 loc) · 157 KB
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
/* The high-level video driver subsystem */
#include "SDL_sysvideo.h"
#include "SDL_egl_c.h"
#include "SDL_blit.h"
#include "SDL_pixels_c.h"
#include "SDL_rect_c.h"
#include "SDL_video_c.h"
#include "../events/SDL_events_c.h"
#include "../SDL_hints_c.h"
#include "../SDL_properties_c.h"
#include "../timer/SDL_timer_c.h"
#include "../camera/SDL_camera_c.h"
#ifdef SDL_VIDEO_OPENGL
#include <SDL3/SDL_opengl.h>
#endif /* SDL_VIDEO_OPENGL */
#if defined(SDL_VIDEO_OPENGL_ES) && !defined(SDL_VIDEO_OPENGL)
#include <SDL3/SDL_opengles.h>
#endif /* SDL_VIDEO_OPENGL_ES && !SDL_VIDEO_OPENGL */
/* GL and GLES2 headers conflict on Linux 32 bits */
#if defined(SDL_VIDEO_OPENGL_ES2) && !defined(SDL_VIDEO_OPENGL)
#include <SDL3/SDL_opengles2.h>
#endif /* SDL_VIDEO_OPENGL_ES2 && !SDL_VIDEO_OPENGL */
#ifndef SDL_VIDEO_OPENGL
#ifndef GL_CONTEXT_RELEASE_BEHAVIOR_KHR
#define GL_CONTEXT_RELEASE_BEHAVIOR_KHR 0x82FB
#endif
#endif
#ifdef SDL_PLATFORM_EMSCRIPTEN
#include <emscripten.h>
#endif
#ifdef SDL_PLATFORM_LINUX
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#endif
/* Available video drivers */
static VideoBootStrap *bootstrap[] = {
#ifdef SDL_VIDEO_DRIVER_COCOA
&COCOA_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_WAYLAND
&Wayland_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_X11
&X11_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_VIVANTE
&VIVANTE_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_WINDOWS
&WINDOWS_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_WINRT
&WINRT_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_HAIKU
&HAIKU_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_UIKIT
&UIKIT_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_ANDROID
&Android_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_PS2
&PS2_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_PSP
&PSP_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_VITA
&VITA_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_N3DS
&N3DS_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_KMSDRM
&KMSDRM_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_RISCOS
&RISCOS_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_RPI
&RPI_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_EMSCRIPTEN
&Emscripten_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_QNX
&QNX_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_NGAGE
&NGAGE_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_OFFSCREEN
&OFFSCREEN_bootstrap,
#endif
#ifdef SDL_VIDEO_DRIVER_DUMMY
&DUMMY_bootstrap,
#ifdef SDL_INPUT_LINUXEV
&DUMMY_evdev_bootstrap,
#endif
#endif
NULL
};
#define CHECK_WINDOW_MAGIC(window, retval) \
if (!_this) { \
SDL_UninitializedVideo(); \
return retval; \
} \
if (!(window) || (window)->magic != &_this->window_magic) { \
SDL_SetError("Invalid window"); \
return retval; \
}
#define CHECK_DISPLAY_MAGIC(display, retval) \
if (!display) { \
return retval; \
} \
#define CHECK_WINDOW_NOT_POPUP(window, retval) \
if (SDL_WINDOW_IS_POPUP(window)) { \
SDL_SetError("Operation invalid on popup windows"); \
return retval; \
}
#if defined(SDL_PLATFORM_MACOS) && defined(SDL_VIDEO_DRIVER_COCOA)
/* Support for macOS fullscreen spaces */
extern SDL_bool Cocoa_IsWindowInFullscreenSpace(SDL_Window *window);
extern SDL_bool Cocoa_SetWindowFullscreenSpace(SDL_Window *window, SDL_bool state, SDL_bool blocking);
#endif
static void SDL_CheckWindowDisplayChanged(SDL_Window *window);
static void SDL_CheckWindowDisplayScaleChanged(SDL_Window *window);
/* Convenience functions for reading driver flags */
static SDL_bool SDL_M
10BC8
odeSwitchingEmulated(SDL_VideoDevice *_this)
{
if (_this->device_caps & VIDEO_DEVICE_CAPS_MODE_SWITCHING_EMULATED) {
return SDL_TRUE;
}
return SDL_FALSE;
}
static SDL_bool SDL_SendsFullscreenDimensions(SDL_VideoDevice *_this)
{
return !!(_this->device_caps & VIDEO_DEVICE_CAPS_SENDS_FULLSCREEN_DIMENSIONS);
}
/* Hint to treat all window ops as synchronous */
static SDL_bool syncHint;
static void SDL_SyncHintWatcher(void *userdata, const char *name, const char *oldValue, const char *newValue)
{
syncHint = SDL_GetStringBoolean(newValue, SDL_FALSE);
}
static void SDL_SyncIfRequired(SDL_Window *window)
{
if (syncHint) {
SDL_SyncWindow(window);
}
}
/* Support for framebuffer emulation using an accelerated renderer */
#define SDL_PROP_WINDOW_TEXTUREDATA_POINTER "SDL.internal.window.texturedata"
typedef struct
{
SDL_Renderer *renderer;
SDL_Texture *texture;
void *pixels;
int pitch;
int bytes_per_pixel;
} SDL_WindowTextureData;
static Uint32 SDL_DefaultGraphicsBackends(SDL_VideoDevice *_this)
{
#if (defined(SDL_VIDEO_OPENGL) && defined(SDL_PLATFORM_MACOS)) || (defined(SDL_PLATFORM_IOS) && !TARGET_OS_MACCATALYST) || defined(SDL_PLATFORM_ANDROID)
if (_this->GL_CreateContext) {
return SDL_WINDOW_OPENGL;
}
#endif
#if defined(SDL_VIDEO_METAL) && (TARGET_OS_MACCATALYST || defined(SDL_PLATFORM_MACOS) || defined(SDL_PLATFORM_IOS))
if (_this->Metal_CreateView) {
return SDL_WINDOW_METAL;
}
#endif
return 0;
}
static void SDLCALL SDL_CleanupWindowTextureData(void *userdata, void *value)
{
SDL_WindowTextureData *data = (SDL_WindowTextureData *)value;
if (data->texture) {
SDL_DestroyTexture(data->texture);
}
if (data->renderer) {
SDL_DestroyRenderer(data->renderer);
}
SDL_free(data->pixels);
SDL_free(data);
}
static int SDL_CreateWindowTexture(SDL_VideoDevice *_this, SDL_Window *window, SDL_PixelFormatEnum *format, void **pixels, int *pitch)
{
SDL_RendererInfo info;
SDL_PropertiesID props = SDL_GetWindowProperties(window);
SDL_WindowTextureData *data = (SDL_WindowTextureData *)SDL_GetProperty(props, SDL_PROP_WINDOW_TEXTUREDATA_POINTER, NULL);
const SDL_bool transparent = (window->flags & SDL_WINDOW_TRANSPARENT) ? SDL_TRUE : SDL_FALSE;
int i;
int w, h;
SDL_GetWindowSizeInPixels(window, &w, &h);
if (!data) {
SDL_Renderer *renderer = NULL;
const char *hint = SDL_GetHint(SDL_HINT_FRAMEBUFFER_ACCELERATION);
const SDL_bool specific_accelerated_renderer = (hint && *hint != '0' && *hint != '1' &&
SDL_strcasecmp(hint, "true") != 0 &&
SDL_strcasecmp(hint, "false") != 0 &&
SDL_strcasecmp(hint, "software") != 0);
/* Check to see if there's a specific driver requested */
if (specific_accelerated_renderer) {
renderer = SDL_CreateRenderer(window, hint, 0);
if (!renderer || (SDL_GetRendererInfo(renderer, &info) == -1)) {
if (renderer) {
SDL_DestroyRenderer(renderer);
}
return SDL_SetError("Requested renderer for " SDL_HINT_FRAMEBUFFER_ACCELERATION " is not available");
}
/* if it was specifically requested, even if SDL_RENDERER_ACCELERATED isn't set, we'll accept this renderer. */
} else {
const int total = SDL_GetNumRenderDrivers();
for (i = 0; i < total; ++i) {
const char *name = SDL_GetRenderDriver(i);
if (name && (SDL_strcmp(name, "software") != 0)) {
renderer = SDL_CreateRenderer(window, name, 0);
if (renderer && (SDL_GetRendererInfo(renderer, &info) == 0) && (info.flags & SDL_RENDERER_ACCELERATED)) {
break; /* this will work. */
}
if (renderer) { /* wasn't accelerated, etc, skip it. */
SDL_DestroyRenderer(renderer);
renderer = NULL;
}
}
}
if (!renderer) {
return SDL_SetError("No hardware accelerated renderers available");
}
}
SDL_assert(renderer != NULL); /* should have explicitly checked this above. */
/* Create the data after we successfully create the renderer (bug #1116) */
data = (SDL_WindowTextureData *)SDL_calloc(1, sizeof(*data));
if (!data) {
SDL_DestroyRenderer(renderer);
return -1;
}
SDL_SetPropertyWithCleanup(props, SDL_PROP_WINDOW_TEXTUREDATA_POINTER, data, SDL_CleanupWindowTextureData, NULL);
data->renderer = renderer;
} else {
if (SDL_GetRendererInfo(data->renderer, &info) == -1) {
return -1;
}
}
/* Free any old texture and pixel data */
if (data->texture) {
SDL_DestroyTexture(data->texture);
data->texture = NULL;
}
SDL_free(data->pixels);
data->pixels = NULL;
/* Find the first format with or without an alpha channel */
*format = info.texture_formats[0];
for (i = 0; i < info.num_texture_formats; ++i) {
if (!SDL_ISPIXELFORMAT_FOURCC(info.texture_formats[i]) &&
transparent == SDL_ISPIXELFORMAT_ALPHA(info.texture_formats[i])) {
*format = info.texture_formats[i];
break;
}
}
data->texture = SDL_CreateTexture(data->renderer, *format,
SDL_TEXTUREACCESS_STREAMING,
w, h);
if (!data->texture) {
/* codechecker_false_positive [Malloc] Static analyzer doesn't realize allocated `data` is saved to SDL_PROP_WINDOW_TEXTUREDATA_POINTER and not leaked here. */
return -1; /* NOLINT(clang-analyzer-unix.Malloc) */
}
/* Create framebuffer data */
data->bytes_per_pixel = SDL_BYTESPERPIXEL(*format);
data->pitch = (((w * data->bytes_per_pixel) + 3) & ~3);
{
/* Make static analysis happy about potential SDL_malloc(0) calls. */
const size_t allocsize = (size_t)h * data->pitch;
data->pixels = SDL_malloc((allocsize > 0) ? allocsize : 1);
if (!data->pixels) {
return -1;
}
}
*pixels = data->pixels;
*pitch = data->pitch;
/* Make sure we're not double-scaling the viewport */
SDL_SetRenderViewport(data->renderer, NULL);
return 0;
}
static SDL_VideoDevice *_this = NULL;
static SDL_AtomicInt SDL_messagebox_count;
static int SDL_UpdateWindowTexture(SDL_VideoDevice *unused, SDL_Window *window, const SDL_Rect *rects, int numrects)
{
SDL_WindowTextureData *data;
SDL_Rect rect;
void *src;
int w, h;
SDL_GetWindowSizeInPixels(window, &w, &h);
data = (SDL_WindowTextureData *)SDL_GetProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_TEXTUREDATA_POINTER, NULL);
if (!data || !data->texture) {
return SDL_SetError("No window texture data");
}
/* Update a single rect that contains subrects for best DMA performance */
if (SDL_GetSpanEnclosingRect(w, h, numrects, rects, &rect)) {
src = (void *)((Uint8 *)data->pixels +
rect.y * data->pitch +
rect.x * data->bytes_per_pixel);
if (SDL_UpdateTexture(data->texture, &rect, src, data->pitch) < 0) {
return -1;
}
if (SDL_RenderTexture(data->renderer, data->texture, NULL, NULL) < 0) {
return -1;
}
SDL_RenderPresent(data->renderer);
}
return 0;
}
static void SDL_DestroyWindowTexture(SDL_VideoDevice *unused, SDL_Window *window)
{
SDL_ClearProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_TEXTUREDATA_POINTER);
}
int SDL_SetWindowTextureVSync(SDL_Window *window, int vsync)
{
SDL_WindowTextureData *data;
data = (SDL_WindowTextureData *)SDL_GetProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_TEXTUREDATA_POINTER, NULL);
if (!data) {
return -1;
}
if (!data->renderer) {
return -1;
}
return SDL_SetRenderVSync(data->renderer, vsync);
}
static int SDLCALL cmpmodes(const void *A, const void *B)
{
const SDL_DisplayMode *a = (const SDL_DisplayMode *)A;
const SDL_DisplayMode *b = (const SDL_DisplayMode *)B;
int a_refresh_rate = (int)(a->refresh_rate * 100);
int b_refresh_rate = (int)(b->refresh_rate * 100);
int a_pixel_density = (int)(a->pixel_density * 100);
int b_pixel_density = (int)(b->pixel_density * 100);
if (a->w != b->w) {
return b->w - a->w;
} else if (a->h != b->h) {
return b->h - a->h;
} else if (SDL_BITSPERPIXEL(a->format) != SDL_BITSPERPIXEL(b->format)) {
return SDL_BITSPERPIXEL(b->format) - SDL_BITSPERPIXEL(a->format);
} else if (SDL_PIXELLAYOUT(a->format) != SDL_PIXELLAYOUT(b->format)) {
return SDL_PIXELLAYOUT(b->format) - SDL_PIXELLAYOUT(a->format);
} else if (a_refresh_rate != b_refresh_rate) {
return b_refresh_rate - a_refresh_rate;
} else if (a_pixel_density != b_pixel_density) {
return a_pixel_density - b_pixel_density;
}
return 0;
}
static int SDL_UninitializedVideo(void)
{
return SDL_SetError("Video subsystem has not been initialized");
}
int SDL_GetNumVideoDrivers(void)
{
return SDL_arraysize(bootstrap) - 1;
}
const char *SDL_GetVideoDriver(int index)
{
if (index >= 0 && index < SDL_GetNumVideoDrivers()) {
return bootstrap[index]->name;
}
return NULL;
}
/*
* Initialize the video and event subsystems -- determine native pixel format
*/
int SDL_VideoInit(const char *driver_name)
{
SDL_VideoDevice *video;
SDL_bool init_events = SDL_FALSE;
SDL_bool init_keyboard = SDL_FALSE;
SDL_bool init_mouse = SDL_FALSE;
SDL_bool init_touch = SDL_FALSE;
int i = 0;
/* Check to make sure we don't overwrite '_this' */
if (_this) {
SDL_VideoQuit();
}
SDL_InitTicks();
/* Start the event loop */
if (SDL_InitSubSystem(SDL_INIT_EVENTS) < 0) {
goto pre_driver_error;
}
init_events = SDL_TRUE;
if (SDL_InitKeyboard() < 0) {
goto pre_driver_error;
}
init_keyboard = SDL_TRUE;
if (SDL_PreInitMouse() < 0) {
goto pre_driver_error;
}
init_mouse = SDL_TRUE;
if (SDL_InitTouch() < 0) {
goto pre_driver_error;
}
init_touch = SDL_TRUE;
/* Select the proper video driver */
video = NULL;
if (!driver_name) {
driver_name = SDL_GetHint(SDL_HINT_VIDEO_DRIVER);
}
if (driver_name && *driver_name != 0) {
const char *driver_attempt = driver_name;
while (driver_attempt && *driver_attempt != 0 && !video) {
const char *driver_attempt_end = SDL_strchr(driver_attempt, ',');
size_t driver_attempt_len = (driver_attempt_end) ? (driver_attempt_end - driver_attempt)
: SDL_strlen(driver_attempt);
for (i = 0; bootstrap[i]; ++i) {
if ((driver_attempt_len == SDL_strlen(bootstrap[i]->name)) &&
(SDL_strncasecmp(bootstrap[i]->name, driver_attempt, driver_attempt_len) == 0)) {
video = bootstrap[i]->create();
break;
}
}
driver_attempt = (driver_attempt_end) ? (driver_attempt_end + 1) : NULL;
}
} else {
for (i = 0; bootstrap[i]; ++i) {
video = bootstrap[i]->create();
if (video) {
break;
}
}
}
if (!video) {
if (driver_name) {
SDL_SetError("%s not available", driver_name);
goto pre_driver_error;
}
SDL_SetError("No available video device");
goto pre_driver_error;
}
/* From this point on, use SDL_VideoQuit to cleanup on error, rather than
pre_driver_error. */
_this = video;
_this->name = bootstrap[i]->name;
_this->thread = SDL_GetCurrentThreadID();
/* Set some very sane GL defaults */
_this->gl_config.driver_loaded = 0;
_this->gl_config.dll_handle = NULL;
SDL_GL_ResetAttributes();
_this->current_glwin_tls = SDL_CreateTLS();
_this->current_glctx_tls = SDL_CreateTLS();
/* Initialize the video subsystem */
if (_this->VideoInit(_this) < 0) {
SDL_VideoQuit();
return -1;
}
/* Make sure some displays were added */
if (_this->num_displays == 0) {
SDL_VideoQuit();
return SDL_SetError("The video driver did not add any displays");
}
SDL_AddHintCallback(SDL_HINT_VIDEO_SYNC_WINDOW_OPERATIONS, SDL_SyncHintWatcher, NULL);
/* Disable the screen saver by default. This is a change from <= 2.0.1,
but most things using SDL are games or media players; you wouldn't
want a screensaver to trigger if you're playing exclusively with a
joystick, or passively watching a movie. Things that use SDL but
function more like a normal desktop app should explicitly reenable the
screensaver. */
if (!SDL_GetHintBoolean(SDL_HINT_VIDEO_ALLOW_SCREENSAVER, SDL_FALSE)) {
SDL_DisableScreenSaver();
}
#if !defined(SDL_VIDEO_DRIVER_N3DS)
{
/* In the initial state we don't want to pop up an on-screen keyboard,
* but we do want to allow text input from other mechanisms.
*/
const char *hint = SDL_GetHint(SDL_HINT_ENABLE_SCREEN_KEYBOARD);
if (!hint) {
SDL_SetHint(SDL_HINT_ENABLE_SCREEN_KEYBOARD, "0");
}
SDL_StartTextInput();
if (!hint) {
SDL_SetHint(SDL_HINT_ENABLE_SCREEN_KEYBOARD, NULL);
}
}
#endif /* !SDL_VIDEO_DRIVER_N3DS */
SDL_PostInitMouse();
/* We're ready to go! */
return 0;
pre_driver_error:
SDL_assert(_this == NULL);
if (init_touch) {
SDL_QuitTouch();
}
if (init_mouse) {
SDL_QuitMouse();
}
if (init_keyboard) {
SDL_QuitKeyboard();
}
if (init_events) {
SDL_QuitSubSystem(SDL_INIT_EVENTS);
}
return -1;
}
const char *SDL_GetCurrentVideoDriver(void)
{
if (!_this) {
SDL_UninitializedVideo();
return NULL;
}
return _this->name;
}
SDL_VideoDevice *SDL_GetVideoDevice(void)
{
return _this;
}
SDL_bool SDL_OnVideoThread(void)
{
return (_this && SDL_GetCurrentThreadID() == _this->thread);
}
void SDL_SetSystemTheme(SDL_SystemTheme theme)
{
if (_this && theme != _this->system_theme) {
_this->system_theme = theme;
SDL_SendSystemThemeChangedEvent();
}
}
SDL_SystemTheme SDL_GetSystemTheme(void)
{
if (_this) {
return _this->system_theme;
} else {
return SDL_SYSTEM_THEME_UNKNOWN;
}
}
static void SDL_FinalizeDisplayMode(SDL_DisplayMode *mode)
{
/* Make sure all the fields are set up correctly */
if (mode->pixel_density <= 0.0f) {
mode->pixel_density = 1.0f;
}
}
SDL_DisplayID SDL_AddBasicVideoDisplay(const SDL_DisplayMode *desktop_mode)
{
SDL_VideoDisplay display;
SDL_zero(display);
if (desktop_mode) {
SDL_memcpy(&display.desktop_mode, desktop_mode, sizeof(display.desktop_mode));
}
return SDL_AddVideoDisplay(&display, SDL_FALSE);
}
SDL_DisplayID SDL_AddVideoDisplay(const SDL_VideoDisplay *display, SDL_bool send_event)
{
SDL_VideoDisplay **displays, *new_display;
SDL_DisplayID id;
SDL_PropertiesID props;
int i;
new_display = (SDL_VideoDisplay *)SDL_malloc(sizeof(*new_display));
if (!new_display) {
return 0;
}
displays = (SDL_VideoDisplay **)SDL_realloc(_this->displays, (_this->num_displays + 1) * sizeof(*displays));
if (!displays) {
SDL_free(new_display);
return 0;
}
_this->displays = displays;
_this->displays[_this->num_displays++] = new_display;
id = SDL_GetNextObjectID();
SDL_memcpy(new_display, display, sizeof(*new_display));
new_display->id = id;
new_display->device = _this;
if (display->name) {
new_display->name = SDL_strdup(display->name);
} else {
char name[32];
SDL_itoa(id, name, 10);
new_display->name = SDL_strdup(name);
}
if (new_display->content_scale == 0.0f) {
new_display->content_scale = 1.0f;
}
new_display->desktop_mode.displayID = id;
new_display->current_mode = &new_display->desktop_mode;
SDL_FinalizeDisplayMode(&new_display->desktop_mode);
for (i = 0; i < new_display->num_fullscreen_modes; ++i) {
new_display->fullscreen_modes[i].displayID = id;
}
props = SDL_GetDisplayProperties(id);
if (display->HDR.HDR_headroom > 1.0f) {
SDL_SetBooleanProperty(props, SDL_PROP_DISPLAY_HDR_ENABLED_BOOLEAN, SDL_TRUE);
} else {
SDL_SetBooleanProperty(props, SDL_PROP_DISPLAY_HDR_ENABLED_BOOLEAN, SDL_FALSE);
}
if (display->HDR.SDR_white_point <= 1.0f) {
SDL_SetFloatProperty(props, SDL_PROP_DISPLAY_SDR_WHITE_POINT_FLOAT, 1.0f);
} else {
SDL_SetFloatProperty(props, SDL_PROP_DISPLAY_SDR_WHITE_POINT_FLOAT, display->HDR.SDR_white_point);
}
if (display->HDR.HDR_headroom <= 1.0f) {
SDL_SetFloatProperty(props, SDL_PROP_DISPLAY_HDR_HEADROOM_FLOAT, 1.0f);
} else {
SDL_SetFloatProperty(props, SDL_PROP_DISPLAY_HDR_HEADROOM_FLOAT, display->HDR.HDR_headroom);
}
return id;
}
void SDL_OnDisplayAdded(SDL_VideoDisplay *display)
{
SDL_Window *window;
/* See if any windows have changed to the new display */
for (window = _this->windows; window; window = window->next) {
SDL_CheckWindowDisplayChanged(window);
}
}
void SDL_DelVideoDisplay(SDL_DisplayID displayID, SDL_bool send_event)
{
SDL_VideoDisplay *display;
int display_index = SDL_GetDisplayIndex(displayID);
if (display_index < 0) {
return;
}
display = _this->displays[display_index];
if (send_event) {
SDL_SendDisplayEvent(display, SDL_EVENT_DISPLAY_REMOVED, 0);
}
SDL_DestroyProperties(display->props);
SDL_free(display->name);
SDL_ResetFullscreenDisplayModes(display);
SDL_free(display->desktop_mode.driverdata);
display->desktop_mode.driverdata = NULL;
SDL_free(display->driverdata);
display->driverdata = NULL;
SDL_free(display);
if (display_index < (_this->num_displays - 1)) {
SDL_memmove(&_this->displays[display_index], &_this->displays[display_index + 1], (_this->num_displays - display_index - 1) * sizeof(_this->displays[display_index]));
}
--_this->num_displays;
}
SDL_DisplayID *SDL_GetDisplays(int *count)
{
int i;
SDL_DisplayID *displays;
if (!_this) {
if (count) {
*count = 0;
}
SDL_UninitializedVideo();
return NULL;
}
displays = (SDL_DisplayID *)SDL_malloc((_this->num_displays + 1) * sizeof(*displays));
if (displays) {
if (count) {
*count = _this->num_displays;
}
for (i = 0; i < _this->num_displays; ++i) {
displays[i] = _this->displays[i]->id;
}
displays[i] = 0;
} else {
if (count) {
*count = 0;
}
}
return displays;
}
SDL_VideoDisplay *SDL_GetVideoDisplay(SDL_DisplayID displayID)
{
int display_index;
display_index = SDL_GetDisplayIndex(displayID);
if (display_index < 0) {
return NULL;
}
return _this->displays[display_index];
}
SDL_VideoDisplay *SDL_GetVideoDisplayForWindow(SDL_Window *window)
{
return SDL_GetVideoDisplay(SDL_GetDisplayForWindow(window));
}
SDL_DisplayID SDL_GetPrimaryDisplay(void)
{
if (!_this || _this->num_displays == 0) {
SDL_UninitializedVideo();
return 0;
}
return _this->displays[0]->id;
}
int SDL_GetDisplayIndex(SDL_DisplayID displayID)
{
int display_index;
if (!_this) {
return SDL_UninitializedVideo();
}
for (display_index = 0; display_index < _this->num_displays; ++display_index) {
if (displayID == _this->displays[display_index]->id) {
return display_index;
}
}
return SDL_SetError("Invalid display");
}
SDL_DisplayData *SDL_GetDisplayDriverData(SDL_DisplayID displayID)
{
SDL_VideoDisplay *display = SDL_GetVideoDisplay(displayID);
CHECK_DISPLAY_MAGIC(display, NULL);
return display->driverdata;
}
SDL_DisplayData *SDL_GetDisplayDriverDataForWindow(SDL_Window *window)
{
return SDL_GetDisplayDriverData(SDL_GetDisplayForWindow(window));
}
SDL_PropertiesID SDL_GetDisplayProperties(SDL_DisplayID displayID)
{
SDL_VideoDisplay *display = SDL_GetVideoDisplay(displayID);
CHECK_DISPLAY_MAGIC(display, 0);
if (display->props == 0) {
display->props = SDL_CreateProperties();
}
return display->props;
}
const char *SDL_GetDisplayName(SDL_DisplayID displayID)
{
SDL_VideoDisplay *display = SDL_GetVideoDisplay(displayID);
CHECK_DISPLAY_MAGIC(display, NULL);
return display->name;
}
int SDL_GetDisplayBounds(SDL_DisplayID displayID, SDL_Rect *rect)
{
SDL_VideoDisplay *display = SDL_GetVideoDisplay(displayID);
CHECK_DISPLAY_MAGIC(display, -1);
if (!rect) {
return SDL_InvalidParamError("rect");
}
if (_this->GetDisplayBounds) {
if (_this->GetDisplayBounds(_this, display, rect) == 0) {
return 0;
}
}
/* Assume that the displays are left to right */
if (displayID == SDL_GetPrimaryDisplay()) {
rect->x = 0;
rect->y = 0;
} else {
SDL_GetDisplayBounds(_this->displays[SDL_GetDisplayIndex(displayID) - 1]->id, rect);
rect->x += rect->w;
}
rect->w = display->current_mode->w;
rect->h = display->current_mode->h;
return 0;
}
static int ParseDisplayUsableBoundsHint(SDL_Rect *rect)
{
const char *hint = SDL_GetHint(SDL_HINT_DISPLAY_USABLE_BOUNDS);
return hint && (SDL_sscanf(hint, "%d,%d,%d,%d", &rect->x, &rect->y, &rect->w, &rect->h) == 4);
}
int SDL_GetDisplayUsableBounds(SDL_DisplayID displayID, SDL_Rect *rect)
{
SDL_VideoDisplay *display = SDL_GetVideoDisplay(displayID);
CHECK_DISPLAY_MAGIC(display, -1);
if (!rect) {
return SDL_InvalidParamError("rect");
}
if (displayID == SDL_GetPrimaryDisplay() && ParseDisplayUsableBoundsHint(rect)) {
return 0;
}
if (_this->GetDisplayUsableBounds) {
if (_this->GetDisplayUsableBounds(_this, display, rect) == 0) {
return 0;
}
}
/* Oh well, just give the entire display bounds. */
return SDL_GetDisplayBounds(displayID, rect);
}
SDL_DisplayOrientation SDL_GetNaturalDisplayOrientation(SDL_DisplayID displayID)
{
SDL_VideoDisplay *display = SDL_GetVideoDisplay(displayID);
CHECK_DISPLAY_MAGIC(display, SDL_ORIENTATION_UNKNOWN);
if (display->natural_orientation != SDL_ORIENTATION_UNKNOWN) {
return display->natural_orientation;
} else {
/* Default to landscape if the driver hasn't set it */
return SDL_ORIENTATION_LANDSCAPE;
}
}
SDL_DisplayOrientation SDL_GetCurrentDisplayOrientation(SDL_DisplayID displayID)
{
SDL_VideoDisplay *display = SDL_GetVideoDisplay(displayID);
CHECK_DISPLAY_MAGIC(display, SDL_ORIENTATION_UNKNOWN);
if (display->current_orientation != SDL_ORIENTATION_UNKNOWN) {
return display->current_orientation;
} else {
/* Default to landscape if the driver hasn't set it */
return SDL_ORIENTATION_LANDSCAPE;
}
}
void SDL_SetDisplayContentScale(SDL_VideoDisplay *display, float scale)
{
if (scale != display->content_scale) {
SDL_Window *window;
display->content_scale = scale;
SDL_SendDisplayEvent(display, SDL_EVENT_DISPLAY_CONTENT_SCALE_CHANGED, 0);
/* Check the windows on this display */
for (window = _this->windows; window; window = window->next) {
if (display->id == window->last_displayID) {
SDL_CheckWindowDisplayScaleChanged(window);
}
}
}
}
float SDL_GetDisplayContentScale(SDL_DisplayID displayID)
{
SDL_VideoDisplay *display = SDL_GetVideoDisplay(displayID);
CHECK_DISPLAY_MAGIC(display, 0.0f);
return display->content_scale;
}
void SDL_SetDisplayHDRProperties(SDL_VideoDisplay *display, const SDL_HDRDisplayProperties *HDR)
{
SDL_PropertiesID props = SDL_GetDisplayProperties(display->id);
SDL_bool changed = SDL_FALSE;
if (HDR->SDR_white_point != display->HDR.SDR_white_point) {
if (HDR->SDR_white_point <= 1.0f) {
SDL_SetFloatProperty(props, SDL_PROP_DISPLAY_SDR_WHITE_POINT_FLOAT, 1.0f);
} else {
SDL_SetFloatProperty(props, SDL_PROP_DISPLAY_SDR_WHITE_POINT_FLOAT, HDR->SDR_white_point);
}
changed = SDL_TRUE;
}
if (HDR->HDR_headroom != display->HDR.HDR_headroom) {
if (HDR->HDR_headroom > 1.0f) {
SDL_SetBooleanProperty(props, SDL_PROP_DISPLAY_HDR_ENABLED_BOOLEAN, SDL_TRUE);
} else {
SDL_SetBooleanProperty(props, SDL_PROP_DISPLAY_HDR_ENABLED_BOOLEAN, SDL_FALSE);