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kmsdrm: avoid overriding the mode requested by SDL_SetWindowDisplayMode

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when recreating surfaces
This commit is contained in:
Anthony Pesch 2021-06-08 20:48:24 -04:00 committed by Sam Lantinga
parent 814285d6e3
commit 5a296e2589
2 changed files with 35 additions and 69 deletions
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102
src/video/kmsdrm/SDL_kmsdrmvideo.c
View File

@ -639,9 +639,8 @@ void KMSDRM_AddDisplay (_THIS, drmModeConnector *connector, drmModeRes *resource
which is the mode currently setup on the CRTC
we found for the active connector. */
dispdata->mode = crtc->mode;
/* Save the original mode for restoration on quit. */
dispdata->original_mode = dispdata->mode;
dispdata->original_mode = crtc->mode;
dispdata->fullscreen_mode = crtc->mode;
if (dispdata->mode.hdisplay == 0 || dispdata->mode.vdisplay == 0 ) {
ret = SDL_SetError("Couldn't get a valid connector videomode.");
@ -900,6 +899,27 @@ KMSDRM_DestroySurfaces(_THIS, SDL_Window *window)
}
}
static void
KMSDRM_GetModeToSet(SDL_Window *window, drmModeModeInfo *out_mode) {
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
SDL_DisplayData *dispdata = (SDL_DisplayData *)display->driverdata;
if ((window->flags & SDL_WINDOW_FULLSCREEN) == SDL_WINDOW_FULLSCREEN) {
*out_mode = dispdata->fullscreen_mode;
} else {
drmModeModeInfo *mode;
mode = KMSDRM_GetClosestDisplayMode(display,
window->windowed.w, window->windowed.h, 0);
if (mode) {
*out_mode = *mode;
} else {
*out_mode = dispdata->original_mode;
}
}
}
/* This determines the size of the fb, which comes from the GBM surface
that we create here. */
int
@ -916,9 +936,7 @@ KMSDRM_CreateSurfaces(_THIS, SDL_Window * window)
int ret = 0;
/* If the current window already has surfaces, destroy them before creating other.
This is mainly for ReconfigureWindow(), where we simply call CreateSurfaces()
for regenerating a window's surfaces. */
/* If the current window already has surfaces, destroy them before creating other. */
if (windata->gs) {
KMSDRM_DestroySurfaces(_this, window);
}
@ -929,6 +947,8 @@ KMSDRM_CreateSurfaces(_THIS, SDL_Window * window)
"GBM surface format not supported. Trying anyway.");
}
KMSDRM_GetModeToSet(window, &dispdata->mode);
windata->gs = KMSDRM_gbm_surface_create(viddata->gbm_dev,
dispdata->mode.hdisplay, dispdata->mode.vdisplay,
surface_fmt, surface_flags);
@ -953,6 +973,9 @@ KMSDRM_CreateSurfaces(_THIS, SDL_Window * window)
egl_context = (EGLContext)SDL_GL_GetCurrentContext();
ret = SDL_EGL_MakeCurrent(_this, windata->egl_surface, egl_context);
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED,
dispdata->mode.hdisplay, dispdata->mode.vdisplay);
windata->egl_surface_dirty = SDL_FALSE;
cleanup:
@ -1072,7 +1095,7 @@ KMSDRM_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
/* Take note of the new mode to be set, and leave the CRTC modeset pending
so it's done in SwapWindow. */
dispdata->mode = conn->modes[modedata->mode_index];
dispdata->fullscreen_mode = conn->modes[modedata->mode_index];
for (i = 0; i < viddata->num_windows; i++) {
SDL_Window *window = viddata->windows[i];
@ -1245,14 +1268,13 @@ KMSDRM_CreateWindow(_THIS, SDL_Window * window)
are considered "windowed" at this point of their life.
If a window is fullscreen, SDL internals will call
KMSDRM_SetWindowFullscreen() to reconfigure it if necessary. */
mode = KMSDRM_GetClosestDisplayMode(display,
window->windowed.w, window->windowed.h, 0 );
if (mode) {
dispdata->mode = *mode;
dispdata->fullscreen_mode = *mode;
} else {
dispdata->mode = dispdata->original_mode;
dispdata->fullscreen_mode = dispdata->original_mode;
}
/* Create the window surfaces with the size we have just chosen.
@ -1260,12 +1282,6 @@ KMSDRM_CreateWindow(_THIS, SDL_Window * window)
if ((ret = KMSDRM_CreateSurfaces(_this, window))) {
return (SDL_SetError("Can't window GBM/EGL surfaces on window creation."));
}
/* Tell app about the size we have determined for the window,
so SDL pre-scales to that size for us. */
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED,
dispdata->mode.hdisplay, dispdata->mode.vdisplay);
} /* NON-Vulkan block ends. */
/* Add window to the internal list of tracked windows. Note, while it may
@ -1301,56 +1317,6 @@ KMSDRM_CreateWindow(_THIS, SDL_Window * window)
return ret;
}
/*****************************************************************************/
/* Re-create a window surfaces without destroying the window itself, */
/* and set a videomode on the CRTC that matches the surfaces size. */
/* To be used by SetWindowSize() and SetWindowFullscreen(). */
/*****************************************************************************/
void
KMSDRM_ReconfigureWindow( _THIS, SDL_Window * window)
{
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
SDL_DisplayData *dispdata = display->driverdata;
if ((window->flags & SDL_WINDOW_FULLSCREEN) ==
SDL_WINDOW_FULLSCREEN)
{
/* Nothing to do, honor the most recent mode requested by the user */
}
else if ((window->flags & SDL_WINDOW_FULLSCREEN_DESKTOP) ==
SDL_WINDOW_FULLSCREEN_DESKTOP)
{
/* Update the current mode to the desktop mode. */
dispdata->mode = dispdata->original_mode;
} else {
drmModeModeInfo *mode;
/* Try to find a valid video mode matching the size of the window. */
mode = KMSDRM_GetClosestDisplayMode(display,
window->windowed.w, window->windowed.h, 0);
if (mode) {
/* If matching mode found, recreate the GBM surface with the size
of that mode and configure it on the CRTC. */
dispdata->mode = *mode;
} else {
/* If not matching mode found, recreate the GBM surfaces with the
size of the mode that was originally configured on the CRTC,
and setup that mode on the CRTC. */
dispdata->mode = dispdata->original_mode;
}
}
/* Recreate the GBM (and EGL) surfaces, and mark the CRTC mode/fb setting
as pending so it's done on SwapWindow. */
KMSDRM_CreateSurfaces(_this, window);
/* Tell app about the size we have determined for the window,
so SDL pre-scales to that size for us. */
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED,
dispdata->mode.hdisplay, dispdata->mode.vdisplay);
}
int
KMSDRM_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp)
{
@ -1410,7 +1376,7 @@ KMSDRM_SetWindowSize(_THIS, SDL_Window * window)
{
SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata);
if (!viddata->vulkan_mode) {
KMSDRM_ReconfigureWindow(_this, window);
KMSDRM_CreateSurfaces(_this, window);
}
}
void
@ -1419,7 +1385,7 @@ KMSDRM_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * displa
{
SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata);
if (!viddata->vulkan_mode) {
KMSDRM_ReconfigureWindow(_this, window);
KMSDRM_CreateSurfaces(_this, window);
}
}
void

2
src/video/kmsdrm/SDL_kmsdrmvideo.h
View File

@ -68,7 +68,7 @@ typedef struct SDL_DisplayData
drmModeCrtc *crtc;
drmModeModeInfo mode;
drmModeModeInfo original_mode;
drmModeModeInfo next_mode; /* New mode to be set on the CRTC. */
drmModeModeInfo fullscreen_mode;
drmModeCrtc *saved_crtc; /* CRTC to restore on quit */