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Code Issues Projects Releases Wiki Activity

kdrive/modesetting: Filter multi-plane modifiers

Browse source 
Same reason as xf86 modesetting

Signed-off-by: stefan11111 <stefan11111github@gmail.com>
This commit is contained in:
stefan11111 2026-09-25 02:26:37 +03:00 • committed by Enrico Weigelt
commit c9fe32bbd4
1 changed files with 23 additions and 2 deletions
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25
hw/kdrive/modesetting/ms_glamor.c
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@ -137,6 +137,7 @@ msGlamorInit(ScreenPtr pScreen)
msScrPriv *scrpriv = screen->driver;
uint32_t format;
int caps = GLAMOR_EGL_CAP_NONE;
int write_pos = 0;
if (!config->glamor_info.dri_path) {
config->glamor_info.dri_fd = dup(gbm_device_get_fd(priv->gbm));
@ -170,10 +171,30 @@ msGlamorInit(ScreenPtr pScreen)
/* TODO: Query scanout modifiers in CardInit,
* intersect with the render modifiers, and cache them
*/
if (scrpriv->num_render_modifiers == 1 &&
scrpriv->render_modifiers[0] == DRM_FORMAT_MOD_INVALID) {
/* Don't choose multi-plane formats for our screen pixmap.
* These will get used with frontbuffer rendering, which will
* lead to worse-than-tearing with multi-plane formats, as the
* primary and auxiliary planes go out of sync. */
for (int i = 0; i < scrpriv->num_render_modifiers; i++) {
if (gbm_device_get_format_modifier_plane_count(priv->gbm, format, scrpriv->render_modifiers[i]) > 1) {
continue;
}
scrpriv->render_modifiers[write_pos++] = scrpriv->render_modifiers[i];
}
if (write_pos == 0 ||
(scrpriv->num_render_modifiers == 1 &&
scrpriv->render_modifiers[0] == DRM_FORMAT_MOD_INVALID)) {
free(scrpriv->render_modifiers);
scrpriv->render_modifiers = NULL;
scrpriv->num_render_modifiers = 0;
} else if (write_pos < scrpriv->num_render_modifiers) {
void* tmp = realloc(scrpriv->render_modifiers,
write_pos * sizeof(scrpriv->render_modifiers));
if (tmp) {
scrpriv->render_modifiers = tmp;
}
}
return TRUE;