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ssd: work around the translucent titlebar in pixman renderer

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Due to wlroots/pixman bug, the widened 1px buffer for the gradient
titlebar become translucent with WLR_RENDERER=pixman and
WLR_SCALE_FILTER_BILINEAR filter mode. This patch works around this
problem by using WLR_SCALE_FILTER_NEAREST filter mode if pixman
renderer is used.
This commit is contained in:
tokyo4j 2025-06-26 19:39:36 +09:00 • committed by Hiroaki Yamamoto
parent aedf279656
commit d12751c781
1 changed files with 18 additions and 2 deletions
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20
src/ssd/ssd-titlebar.c
View file

@ -3,6 +3,7 @@
#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <string.h>
#include <wlr/render/pixman.h>
#include "buffer.h"
#include "config.h"
#include "common/mem.h"
@ -57,8 +58,23 @@ ssd_titlebar_create(struct ssd *ssd)
wl_list_init(&subtree->parts);
/* Background */
add_scene_buffer(&subtree->parts, LAB_SSD_PART_TITLEBAR, parent,
titlebar_fill, corner_width, 0);
struct wlr_scene_buffer *bg_scene_buffer =
wlr_scene_buffer_create(parent, titlebar_fill);
/*
* Work around the wlroots/pixman bug that widened 1px buffer
* becomes translucent when bilinear filtering is used.
* TODO: remove once https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3990
* is solved
*/
if (wlr_renderer_is_pixman(view->server->renderer)) {
wlr_scene_buffer_set_filter_mode(
bg_scene_buffer, WLR_SCALE_FILTER_NEAREST);
}
struct ssd_part *bg_part =
add_scene_part(&subtree->parts, LAB_SSD_PART_TITLEBAR);
bg_part->node = &bg_scene_buffer->node;
wlr_scene_node_set_position(bg_part->node, corner_width, 0);
add_scene_buffer(&subtree->parts, LAB_SSD_PART_TITLEBAR_CORNER_LEFT, parent,
corner_top_left, -rc.theme->border_width, -rc.theme->border_width);
add_scene_buffer(&subtree->parts, LAB_SSD_PART_TITLEBAR_CORNER_RIGHT, parent,