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main: add setting for DRM/pixman shadow framebuffer

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Allows to control the Pixman-renderer shadow framebuffer usage from
weston.ini. It defaults to enabled, and whether it is a good idea to
disable or not depends on the platform and the workload.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.com>
Reviewed-by: Ian Ray <ian.ray@ge.com>
This commit is contained in:
Pekka Paalanen 2018-04-23 11:44:59 +02:00
parent dee412d174
commit 325ff4cba1
2 changed files with 7 additions and 0 deletions
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3
compositor/main.c
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@ -1286,6 +1286,7 @@ load_drm_backend(struct weston_compositor *c,
struct weston_drm_backend_config config = {{ 0, }};
struct weston_config_section *section;
struct wet_compositor *wet = to_wet_compositor(c);
int use_shadow;
int ret = 0;
wet->drm_use_current_mode = false;
@ -1306,6 +1307,8 @@ load_drm_backend(struct weston_compositor *c,
NULL);
weston_config_section_get_uint(section, "pageflip-timeout",
&config.pageflip_timeout, 0);
weston_config_section_get_bool(section, "pixman-shadow", &use_shadow, 1);
config.use_pixman_shadow = use_shadow;
config.base.struct_version = WESTON_DRM_BACKEND_CONFIG_VERSION;
config.base.struct_size = sizeof(struct weston_drm_backend_config);

4
man/weston-drm.man
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@ -79,6 +79,10 @@ Transform for the output, which can be rotated in 90-degree steps
and possibly flipped. Possible values are
.BR normal ", " 90 ", " 180 ", " 270 ", "
.BR flipped ", " flipped-90 ", " flipped-180 ", and " flipped-270 .
.TP
\fBpixman-shadow\fR=\fIboolean\fR
If using the Pixman-renderer, use shadow framebuffers. Defaults to
.BR true .
.
.\" ***************************************************************
.SH OPTIONS