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backend-x11: split x11_output_get_pixel_format out of x11_output_init_shm

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Split x11_output_get_pixel_format() out of x11_output_init_shm() so the
pixel format can already be known when calling pixman->output_create().

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2023-02-03 16:05:49 +01:00 committed by Pekka Paalanen
parent 8571b844af
commit 7c1492216e
1 changed files with 26 additions and 15 deletions
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41
libweston/backend-x11/x11.c
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@ -724,19 +724,15 @@ get_depth_of_visual(xcb_screen_t *screen,
return 0;
}
static int
x11_output_init_shm(struct x11_backend *b, struct x11_output *output,
int width, int height)
static const struct pixel_format_info *
x11_output_get_shm_pixel_format(struct x11_output *output)
{
struct weston_renderer *renderer = output->base.compositor->renderer;
struct x11_backend *b = output->backend;
xcb_visualtype_t *visual_type;
xcb_screen_t *screen;
xcb_format_iterator_t fmt;
xcb_void_cookie_t cookie;
xcb_generic_error_t *err;
const xcb_query_extension_reply_t *ext;
int bitsperpixel = 0;
const struct pixel_format_info *pfmt;
/* Check if SHM is available */
ext = xcb_get_extension_data(b->conn, &xcb_shm_id);
@ -744,7 +740,7 @@ x11_output_init_shm(struct x11_backend *b, struct x11_output *output,
/* SHM is missing */
weston_log("SHM extension is not available\n");
errno = ENOENT;
return -1;
return NULL;
}
screen = x11_compositor_get_default_screen(b);
@ -752,7 +748,7 @@ x11_output_init_shm(struct x11_backend *b, struct x11_output *output,
if (!visual_type) {
weston_log("Failed to lookup visual for root window\n");
errno = ENOENT;
return -1;
return NULL;
}
weston_log("Found visual, bits per value: %d, red_mask: %.8x, green_mask: %.8x, blue_mask: %.8x\n",
visual_type->bits_per_rgb_value,
@ -778,19 +774,28 @@ x11_output_init_shm(struct x11_backend *b, struct x11_output *output,
visual_type->green_mask == 0x00ff00 &&
visual_type->blue_mask == 0x0000ff) {
weston_log("Will use x8r8g8b8 format for SHM surfaces\n");
pfmt = pixel_format_get_info_by_pixman(PIXMAN_x8r8g8b8);
return pixel_format_get_info_by_pixman(PIXMAN_x8r8g8b8);
} else if (bitsperpixel == 16 &&
visual_type->red_mask == 0x00f800 &&
visual_type->green_mask == 0x0007e0 &&
visual_type->blue_mask == 0x00001f) {
weston_log("Will use r5g6b5 format for SHM surfaces\n");
pfmt = pixel_format_get_info_by_pixman(PIXMAN_r5g6b5);
return pixel_format_get_info_by_pixman(PIXMAN_r5g6b5);
} else {
weston_log("Can't find appropriate format for SHM pixmap\n");
errno = ENOTSUP;
return -1;
return NULL;
}
}
static int
x11_output_init_shm(struct x11_backend *b, struct x11_output *output,
const struct pixel_format_info *pfmt, int width, int height)
{
struct weston_renderer *renderer = output->base.compositor->renderer;
int bitsperpixel = pfmt->bpp;
xcb_void_cookie_t cookie;
xcb_generic_error_t *err;
/* Create SHM segment and attach it */
output->shm_id = shmget(IPC_PRIVATE, width * height * (bitsperpixel / 8), IPC_CREAT | S_IRWXU);
@ -868,8 +873,12 @@ x11_output_switch_mode(struct weston_output *base, struct weston_mode *mode)
weston_renderer_resize_output(&output->base, &fb_size, NULL);
if (base->compositor->renderer->type == WESTON_RENDERER_PIXMAN) {
const struct pixel_format_info *pfmt;
x11_output_deinit_shm(b, output);
if (x11_output_init_shm(b, output,
pfmt = x11_output_get_shm_pixel_format(output);
if (!pfmt)
return -1;
if (x11_output_init_shm(b, output, pfmt,
fb_size.width, fb_size.height) < 0) {
weston_log("Failed to initialize SHM for the X11 output\n");
return -1;
@ -1040,13 +1049,15 @@ x11_output_enable(struct weston_output *base)
.width = mode->width,
.height = mode->height
},
.format = pixel_format_get_info_by_pixman(PIXMAN_x8r8g8b8)
.format = x11_output_get_shm_pixel_format(output)
};
if (!options.format)
goto err;
if (renderer->pixman->output_create(&output->base, &options) < 0) {
weston_log("Failed to create pixman renderer for output\n");
goto err;
}
if (x11_output_init_shm(b, output,
if (x11_output_init_shm(b, output, options.format,
mode->width, mode->height) < 0) {
weston_log("Failed to initialize SHM for the X11 output\n");
renderer->pixman->output_destroy(&output->base);