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[KMS/DRM] Add warning comentary to avoid future experiments with scaling.

This commit is contained in:
Manuel Alfayate Corchete 2021-01-12 20:15:37 +01:00
parent b99543b682
commit 9384e59561
1 changed files with 16 additions and 9 deletions
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25
src/video/kmsdrm/SDL_kmsdrmvideo.c
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@ -995,6 +995,11 @@ KMSDRM_DestroyWindow(_THIS, SDL_Window *window)
SDL_free(windata); SDL_free(windata);
} }
/**********************************************************************/
/* We simply IGNORE if it's a fullscreen window, window->flags don't */
/* reflect it: if it's fullscreen, KMSDRM_SetWindwoFullscreen() which */
/* will be called by SDL later, and we can manage it there. */
/**********************************************************************/
int int
KMSDRM_CreateWindow(_THIS, SDL_Window * window) KMSDRM_CreateWindow(_THIS, SDL_Window * window)
{ {
@ -1069,15 +1074,17 @@ KMSDRM_CreateWindow(_THIS, SDL_Window * window)
KMSDRM_InitCursor(); KMSDRM_InitCursor();
} }
/**********************************************************************/ /* Try to find a matching video mode for the window, fallback to the
/* We simply IGNORE if it's a fullscreen window, window->flags don't */ original mode if not available, and configure the mode we chose
/* reflect it: if it's fullscreen, KMSDRM_SetWindwoFullscreen() which */ into the CRTC.
/* will be called by SDL later, and we can manage it there. */ You may be tempted to not do a videomode change, remaining always on
/**********************************************************************/ the original resolution, and use the SendWindowEvent() parameters to
make SDL2 pre-scale the image for us to an AR-corrected size inside
/* Try to find a matching video mode for the window, fallback to the the original mode, but DON'T: vectorized games (GL games) are rendered
original mode if not available, and configure the mode we chose with the size specified in SendWindowEvent(),instead of being rendered
into the CRTC. */ at the original size and then scaled.
It makes sense because GL is used to render the scene in GL games,
so the scene is rendered at the window size. */
mode = KMSDRM_GetConnectorMode(dispdata->connector, window->w, window->h ); mode = KMSDRM_GetConnectorMode(dispdata->connector, window->w, window->h );
if (mode) { if (mode) {