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present: Check that we can get a KMS FB for flipping

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This can legitimately fail if the pixmap's storage is shared from
another device, e.g. when using PRIME render offloading.

(Ported from amdgpu commit 7d3fef72e0c871e1677e9e544f4cae5e238b5c52)
This commit is contained in:
Michel Dänzer
2019-06-25 17:46:23 +02:00
parent fee737e828
commit 33803c85f7
2 changed files with 19 additions and 0 deletions
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1
src/radeon.h
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@@ -309,6 +309,7 @@ struct radeon_pixmap {
struct radeon_buffer *bo;
struct drmmode_fb *fb;
Bool fb_failed;
uint32_t tiling_flags;

18
src/radeon_present.c
View File

@@ -254,6 +254,7 @@ radeon_present_check_flip(RRCrtcPtr crtc, WindowPtr window, PixmapPtr pixmap,
xf86CrtcPtr xf86_crtc = crtc->devPrivate;
ScreenPtr screen = window->drawable.pScreen;
ScrnInfoPtr scrn = xf86_crtc->scrn;
struct radeon_pixmap *priv = radeon_get_pixmap_private(pixmap);
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(scrn);
RADEONInfoPtr info = RADEONPTR(scrn);
PixmapPtr screen_pixmap = screen->GetScreenPixmap(screen);
@@ -277,6 +278,23 @@ radeon_present_check_flip(RRCrtcPtr crtc, WindowPtr window, PixmapPtr pixmap,
return FALSE;
#endif
if (priv && priv->fb_failed)
return FALSE;
if (!radeon_pixmap_get_fb(pixmap)) {
if (!priv)
priv = radeon_get_pixmap_private(pixmap);
if (priv && !priv->fb_failed) {
xf86DrvMsg(scrn->scrnIndex, X_WARNING,
"Cannot get FB for Present flip (may be "
"normal if using PRIME render offloading)\n");
priv->fb_failed = TRUE;
}
return FALSE;
}
/* The kernel driver doesn't handle flipping between BOs with different
* tiling parameters correctly yet
*/