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compositor-drm: Use drm_fb for cursor buffers

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Now that we have better types in drm_fb, use it for cursor buffers as
well. This gives us easier refcounting for our cursors, as well as a
unified buffer-destruction path.

Currently this makes no difference, as the KMS legacy cursor update API
uses GEM names directly, and never touches DRM FBs. However, the cursor
plane becomes a regular KMS plane under atomic, at which point we
require DRM FBs.

Take the opportunity to move to drm_fb ahead of time.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This commit is contained in:
Daniel Stone 2017-04-04 17:54:27 +01:00 committed by Pekka Paalanen
parent 6e7a961d43
commit e42568313c
1 changed files with 51 additions and 19 deletions
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70
libweston/compositor-drm.c
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@ -133,6 +133,7 @@ enum drm_fb_type {
BUFFER_CLIENT, /**< directly sourced from client */
BUFFER_PIXMAN_DUMB, /**< internal Pixman rendering */
BUFFER_GBM_SURFACE, /**< internal EGL rendering */
BUFFER_CURSOR, /**< internal cursor buffer */
};
struct drm_fb {
@ -181,7 +182,7 @@ struct drm_output {
int disable_pending;
struct gbm_surface *gbm_surface;
struct gbm_bo *gbm_cursor_bo[2];
struct drm_fb *gbm_cursor_fb[2];
struct weston_plane cursor_plane;
struct weston_plane fb_plane;
struct weston_view *cursor_view;
@ -361,7 +362,8 @@ drm_fb_destroy_gbm(struct gbm_bo *bo, void *data)
{
struct drm_fb *fb = data;
assert(fb->type == BUFFER_GBM_SURFACE || fb->type == BUFFER_CLIENT);
assert(fb->type == BUFFER_GBM_SURFACE || fb->type == BUFFER_CLIENT ||
fb->type == BUFFER_CURSOR);
drm_fb_destroy(fb);
}
@ -572,6 +574,7 @@ drm_fb_unref(struct drm_fb *fb)
case BUFFER_PIXMAN_DUMB:
drm_fb_destroy_dumb(fb);
break;
case BUFFER_CURSOR:
case BUFFER_CLIENT:
gbm_bo_destroy(fb->bo);
break;
@ -1387,7 +1390,7 @@ drm_output_set_cursor(struct drm_output *output)
pixman_region32_fini(&output->cursor_plane.damage);
pixman_region32_init(&output->cursor_plane.damage);
output->current_cursor ^= 1;
bo = output->gbm_cursor_bo[output->current_cursor];
bo = output->gbm_cursor_fb[output->current_cursor]->bo;
cursor_bo_update(b, bo, ev);
handle = gbm_bo_get_handle(bo).s32;
@ -1970,6 +1973,48 @@ find_crtc_for_connector(struct drm_backend *b,
return ret;
}
static void drm_output_fini_cursor_egl(struct drm_output *output)
{
unsigned int i;
for (i = 0; i < ARRAY_LENGTH(output->gbm_cursor_fb); i++) {
drm_fb_unref(output->gbm_cursor_fb[i]);
output->gbm_cursor_fb[i] = NULL;
}
}
static int
drm_output_init_cursor_egl(struct drm_output *output, struct drm_backend *b)
{
unsigned int i;
for (i = 0; i < ARRAY_LENGTH(output->gbm_cursor_fb); i++) {
struct gbm_bo *bo;
bo = gbm_bo_create(b->gbm, b->cursor_width, b->cursor_height,
GBM_FORMAT_ARGB8888,
GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
if (!bo)
goto err;
output->gbm_cursor_fb[i] =
drm_fb_get_from_bo(bo, b, GBM_FORMAT_ARGB8888,
BUFFER_CURSOR);
if (!output->gbm_cursor_fb[i]) {
gbm_bo_destroy(bo);
goto err;
}
}
return 0;
err:
weston_log("cursor buffers unavailable, using gl cursors\n");
b->cursors_are_broken = 1;
drm_output_fini_cursor_egl(output);
return -1;
}
/* Init output state that depends on gl or gbm */
static int
drm_output_init_egl(struct drm_output *output, struct drm_backend *b)
@ -1978,7 +2023,7 @@ drm_output_init_egl(struct drm_output *output, struct drm_backend *b)
output->gbm_format,
fallback_format_for(output->gbm_format),
};
int i, flags, n_formats = 1;
int n_formats = 1;
output->gbm_surface = gbm_surface_create(b->gbm,
output->base.current_mode->width,
@ -2004,21 +2049,7 @@ drm_output_init_egl(struct drm_output *output, struct drm_backend *b)
return -1;
}
flags = GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE;
for (i = 0; i < 2; i++) {
if (output->gbm_cursor_bo[i])
continue;
output->gbm_cursor_bo[i] =
gbm_bo_create(b->gbm, b->cursor_width, b->cursor_height,
GBM_FORMAT_ARGB8888, flags);
}
if (output->gbm_cursor_bo[0] == NULL || output->gbm_cursor_bo[1] == NULL) {
weston_log("cursor buffers unavailable, using gl cursors\n");
b->cursors_are_broken = 1;
}
drm_output_init_cursor_egl(output, b);
return 0;
}
@ -2028,6 +2059,7 @@ drm_output_fini_egl(struct drm_output *output)
{
gl_renderer->output_destroy(&output->base);
gbm_surface_destroy(output->gbm_surface);
drm_output_fini_cursor_egl(output);
}
static int