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pixman-renderer: implement shadow resize

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This is necessary if you want to resize a Pixman rendered output that
uses the shadow.

Also reset the current hw_buffer to NULL, because surely it needs to
change and we don't want to keep an old buffer live for no reason if
there happens to be one.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This commit is contained in:
Pekka Paalanen 2022-07-22 11:59:27 +03:00 • committed by Pekka Paalanen
parent 8636422309
commit deff50963e
1 changed files with 37 additions and 17 deletions
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54
libweston/pixman-renderer.c
View file

@ -37,11 +37,13 @@
#include "pixel-formats.h"
#include "shared/helpers.h"
#include "shared/signal.h"
#include "shared/weston-drm-fourcc.h"
#include <linux/input.h>
struct pixman_output_state {
pixman_image_t *shadow_image;
const struct pixel_format_info *shadow_format;
pixman_image_t *hw_buffer;
pixman_region32_t *hw_extra_damage;
};
@ -848,6 +850,8 @@ pixman_renderer_resize_output(struct weston_output *output,
const struct weston_size *fb_size,
const struct weston_geometry *area)
{
struct pixman_output_state *po = get_output_state(output);
check_compositing_area(fb_size, area);
/*
@ -859,7 +863,20 @@ pixman_renderer_resize_output(struct weston_output *output,
assert(fb_size->width == area->width);
assert(fb_size->height == area->height);
return true;
pixman_renderer_output_set_buffer(output, NULL);
if (!po->shadow_format)
return true;
if (po->shadow_image)
pixman_image_unref(po->shadow_image);
po->shadow_image =
pixman_image_create_bits_no_clear(po->shadow_format->pixman_format,
fb_size->width, fb_size->height,
NULL, 0);
return !!po->shadow_image;
}
static void
@ -966,29 +983,32 @@ pixman_renderer_output_create(struct weston_output *output,
const struct pixman_renderer_output_options *options)
{
struct pixman_output_state *po;
int w, h;
struct weston_geometry area = {
.x = 0,
.y = 0,
.width = output->current_mode->width,
.height = output->current_mode->height
};
struct weston_size fb_size = {
.width = area.width,
.height = area.height
};
po = zalloc(sizeof *po);
if (po == NULL)
return -1;
if (options->use_shadow) {
/* set shadow image transformation */
w = output->current_mode->width;
h = output->current_mode->height;
po->shadow_image =
pixman_image_create_bits_no_clear(PIXMAN_x8r8g8b8,
w, h, NULL, 0);
if (!po->shadow_image) {
free(po);
return -1;
}
}
output->renderer_state = po;
if (options->use_shadow)
po->shadow_format = pixel_format_get_info(DRM_FORMAT_XRGB8888);
if (!pixman_renderer_resize_output(output, &fb_size, &area)) {
output->renderer_state = NULL;
free(po);
return -1;
}
return 0;
}