[KMS/DRM] Add warning comentary to avoid future experiments with scaling.
diff --git a/src/video/kmsdrm/SDL_kmsdrmvideo.c b/src/video/kmsdrm/SDL_kmsdrmvideo.c
index 333454e..1099c35 100644
--- a/src/video/kmsdrm/SDL_kmsdrmvideo.c
+++ b/src/video/kmsdrm/SDL_kmsdrmvideo.c
@@ -995,6 +995,11 @@
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
KMSDRM_CreateWindow(_THIS, SDL_Window * window)
{
@@ -1069,15 +1074,17 @@
KMSDRM_InitCursor();
}
- /**********************************************************************/
- /* 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. */
- /**********************************************************************/
-
- /* Try to find a matching video mode for the window, fallback to the
- original mode if not available, and configure the mode we chose
- into the CRTC. */
+ /* Try to find a matching video mode for the window, fallback to the
+ original mode if not available, and configure the mode we chose
+ into the CRTC.
+ 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
+ the original mode, but DON'T: vectorized games (GL games) are rendered
+ with the size specified in SendWindowEvent(),instead of being rendered
+ 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 );
if (mode) {
