Use most optimal buffer format (e.g. tiled/compressed) available for scanout.
v3: Don't use multi-plane modifier to create scanout buffer v4: Add flag to retrieve modifiers set from enabled CRTCs only Signed-off-by: Louis-Francis Ratté-Boulianne <l...@collabora.com> --- hw/xfree86/drivers/modesetting/drmmode_display.c | 74 ++++++++++++++++++++++++ 1 file changed, 74 insertions(+) diff --git a/hw/xfree86/drivers/modesetting/drmmode_display.c b/hw/xfree86/drivers/modesetting/drmmode_display.c index 5bb122c7b..40763e3fb 100644 --- a/hw/xfree86/drivers/modesetting/drmmode_display.c +++ b/hw/xfree86/drivers/modesetting/drmmode_display.c @@ -73,6 +73,66 @@ modifiers_ptr(struct drm_format_modifier_blob *blob) #endif +static uint32_t +get_modifiers_set(ScrnInfoPtr scrn, uint32_t format, uint64_t **modifiers, + Bool enabled_crtc_only, Bool exclude_multiplane) +{ + xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn); + modesettingPtr ms = modesettingPTR(scrn); + drmmode_ptr drmmode = &ms->drmmode; + int c, i, j, k, count_modifiers = 0; + uint64_t *tmp, *ret = NULL; + + *modifiers = NULL; + for (c = 0; c < xf86_config->num_crtc; c++) { + xf86CrtcPtr crtc = xf86_config->crtc[c]; + drmmode_crtc_private_ptr drmmode_crtc = crtc->driver_private; + + if (enabled_crtc_only && !crtc->enabled) + continue; + + for (i = 0; i < drmmode_crtc->num_formats; i++) { + drmmode_format_ptr iter = &drmmode_crtc->formats[i]; + + if (iter->format != format) + continue; + + for (j = 0; j < iter->num_modifiers; j++) { + Bool found = FALSE; + + /* 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. */ + if (exclude_multiplane && + gbm_device_get_format_modifier_plane_count(drmmode->gbm, + format, + iter->modifiers[j]) > 1) { + continue; + } + + for (k = 0; k < count_modifiers; k++) { + if (iter->modifiers[j] == ret[k]) + found = TRUE; + } + if (!found) { + count_modifiers++; + tmp = realloc(ret, count_modifiers * sizeof(uint64_t)); + if (!tmp) { + free(ret); + return 0; + } + ret = tmp; + ret[count_modifiers - 1] = iter->modifiers[j]; + } + } + } + } + + *modifiers = ret; + return count_modifiers; +} + static Bool drmmode_zaphod_string_matches(ScrnInfoPtr scrn, const char *s, char *output_name) { @@ -608,6 +668,20 @@ drmmode_create_bo(drmmode_ptr drmmode, drmmode_bo *bo, #ifdef GLAMOR_HAS_GBM if (drmmode->glamor) { +#ifdef GBM_BO_WITH_MODIFIERS + uint32_t num_modifiers; + uint64_t *modifiers = NULL; + + num_modifiers = get_modifiers_set(drmmode->scrn, DRM_FORMAT_ARGB8888, + &modifiers, FALSE, TRUE); + bo->gbm = gbm_bo_create_with_modifiers(drmmode->gbm, width, height, + GBM_FORMAT_ARGB8888, + modifiers, num_modifiers); + free(modifiers); + if (bo->gbm) + return TRUE; +#endif + bo->gbm = gbm_bo_create(drmmode->gbm, width, height, GBM_FORMAT_ARGB8888, GBM_BO_USE_RENDERING | GBM_BO_USE_SCANOUT); -- 2.13.0 _______________________________________________ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: https://lists.x.org/mailman/listinfo/xorg-devel