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backend-drm: Use resize_output to allow changing the fb 

A video mode change would be needed to change the underlying renderer
framebuffer. All other backends make uses of this so let's do it for the
DRM-backend as well.

This would also be needed for the output capture to function properly as
we need call weston_output_update_capture_info() when a new mode set has
set. Otherwise we'd run into mismatched dimensions for the current mode
versus the dimensions set-up initially in weston_output_capture_source_info.

Signed-off-by: marius vlad <marius.vlad@collabora.com>
This commit is contained in:
marius vlad 2023-07-03 11:34:39 +03:00 committed by Daniel Stone
parent 17e4a77831
commit 3044d8ed72
1 changed files with 6 additions and 0 deletions
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6
libweston/backend-drm/drm.c
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@ -930,6 +930,7 @@ drm_output_apply_mode(struct drm_output *output)
{
struct drm_device *device = output->device;
struct drm_backend *b = device->backend;
struct weston_size fb_size;
/* XXX: This drops our current buffer too early, before we've started
* displaying it. Ideally this should be much more atomic and
@ -939,6 +940,11 @@ drm_output_apply_mode(struct drm_output *output)
*/
device->state_invalid = true;
fb_size.width = output->base.current_mode->width;
fb_size.height = output->base.current_mode->height;
weston_renderer_resize_output(&output->base, &fb_size, NULL);
if (b->compositor->renderer->type == WESTON_RENDERER_PIXMAN) {
drm_output_fini_pixman(output);
if (drm_output_init_pixman(output, b) < 0) {