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bug-fix, Issue #4: prevent guest OS from causing desktop/Spaces switches on OS X host

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This commit is contained in:
David Ludwig 2017-07-23 15:22:00 -04:00
parent 84282f4525
commit 1190a2b127
1 changed files with 60 additions and 24 deletions
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84
BasiliskII/src/SDL/video_sdl.cpp
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@ -641,18 +641,13 @@ driver_base::driver_base(SDL_monitor_desc &m)
the_buffer_copy = NULL;
}
static void shutdown_sdl_video()
static void delete_sdl_video_surfaces()
{
if (sdl_texture) {
SDL_DestroyTexture(sdl_texture);
sdl_texture = NULL;
}
if (sdl_renderer) {
SDL_DestroyRenderer(sdl_renderer);
sdl_renderer = NULL;
}
if (inner_sdl_surface) {
if (inner_sdl_surface == outer_sdl_surface) {
outer_sdl_surface = NULL;
@ -666,6 +661,14 @@ static void shutdown_sdl_video()
SDL_FreeSurface(outer_sdl_surface);
outer_sdl_surface = NULL;
}
}
static void delete_sdl_video_window()
{
if (sdl_renderer) {
SDL_DestroyRenderer(sdl_renderer);
sdl_renderer = NULL;
}
if (sdl_window) {
SDL_DestroyWindow(sdl_window);
@ -673,15 +676,22 @@ static void shutdown_sdl_video()
}
}
static void shutdown_sdl_video()
{
delete_sdl_video_surfaces();
delete_sdl_video_window();
}
static SDL_Surface * init_sdl_video(int width, int height, int bpp, Uint32 flags)
{
if (outer_sdl_surface) {
shutdown_sdl_video();
delete_sdl_video_surfaces();
}
int window_width = width;
int window_height = height;
Uint32 window_flags = 0;
const int window_flags_to_monitor = SDL_WINDOW_FULLSCREEN;
if (flags & SDL_WINDOW_FULLSCREEN) {
SDL_DisplayMode desktop_mode;
@ -693,31 +703,50 @@ static SDL_Surface * init_sdl_video(int width, int height, int bpp, Uint32 flags
window_width = desktop_mode.w;
window_height = desktop_mode.h;
}
if (sdl_window) {
int old_window_width, old_window_height, old_window_flags;
SDL_GetWindowSize(sdl_window, &old_window_width, &old_window_height);
old_window_flags = SDL_GetWindowFlags(sdl_window);
if (old_window_width != window_width ||
old_window_height != window_height ||
(old_window_flags & window_flags_to_monitor) != (window_flags & window_flags_to_monitor))
{
delete_sdl_video_window();
}
}
sdl_window = SDL_CreateWindow(
"Basilisk II",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
window_width,
window_height,
window_flags);
if (!sdl_window) {
shutdown_sdl_video();
return NULL;
}
if (!sdl_window) {
sdl_window = SDL_CreateWindow(
"Basilisk II",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
window_width,
window_height,
window_flags);
if (!sdl_window) {
shutdown_sdl_video();
return NULL;
}
}
sdl_renderer = SDL_CreateRenderer(sdl_window, -1, SDL_RENDERER_ACCELERATED);
if (!sdl_renderer) {
shutdown_sdl_video();
return NULL;
}
if (!sdl_renderer) {
sdl_renderer = SDL_CreateRenderer(sdl_window, -1, SDL_RENDERER_ACCELERATED);
if (!sdl_renderer) {
shutdown_sdl_video();
return NULL;
}
}
SDL_assert(sdl_texture == NULL);
sdl_texture = SDL_CreateTexture(sdl_renderer, SDL_PIXELFORMAT_RGB888, SDL_TEXTUREACCESS_STREAMING, width, height);
if (!sdl_texture) {
shutdown_sdl_video();
return NULL;
}
SDL_assert(outer_sdl_surface == NULL);
SDL_assert(inner_sdl_surface == NULL);
switch (bpp) {
case 8:
outer_sdl_surface = SDL_CreateRGBSurface(0, width, height, 8, 0, 0, 0, 0);
@ -879,7 +908,14 @@ driver_base::~driver_base()
ungrab_mouse();
restore_mouse_accel();
shutdown_sdl_video();
// HACK: Just delete instances of SDL_Surface and SDL_Texture, rather
// than also the SDL_Window and SDL_Renderer. This fixes a bug whereby
// OSX hosts, when in fullscreen, will, on a guest OS resolution change,
// do a series of switches (using OSX's "Spaces" feature) to and from
// the Basilisk II desktop,
delete_sdl_video_surfaces(); // This deletes instances of SDL_Surface and SDL_Texture
//shutdown_sdl_video(); // This deletes SDL_Window, SDL_Renderer, in addition to
// instances of SDL_Surface and SDL_Texture.
// the_buffer shall always be mapped through vm_acquire_framebuffer()
if (the_buffer != VM_MAP_FAILED) {