diff --git a/libweston/compositor-drm.c b/libweston/compositor-drm.c index 835c9ca5..e27bc1d4 100644 --- a/libweston/compositor-drm.c +++ b/libweston/compositor-drm.c @@ -695,11 +695,12 @@ drm_output_prepare_scanout_view(struct drm_output *output, return &output->fb_plane; } -static void +static struct drm_fb * drm_output_render_gl(struct drm_output *output, pixman_region32_t *damage) { struct drm_backend *b = to_drm_backend(output->base.compositor); struct gbm_bo *bo; + struct drm_fb *ret; output->base.compositor->renderer->repaint_output(&output->base, damage); @@ -707,20 +708,21 @@ drm_output_render_gl(struct drm_output *output, pixman_region32_t *damage) bo = gbm_surface_lock_front_buffer(output->gbm_surface); if (!bo) { weston_log("failed to lock front buffer: %m\n"); - return; + return NULL; } - output->fb_pending = drm_fb_get_from_bo(bo, b, output->gbm_format, - BUFFER_GBM_SURFACE); - if (!output->fb_pending) { + ret = drm_fb_get_from_bo(bo, b, output->gbm_format, BUFFER_GBM_SURFACE); + if (!ret) { weston_log("failed to get drm_fb for bo\n"); gbm_surface_release_buffer(output->gbm_surface, bo); - return; + return NULL; } - output->fb_pending->gbm_surface = output->gbm_surface; + ret->gbm_surface = output->gbm_surface; + + return ret; } -static void +static struct drm_fb * drm_output_render_pixman(struct drm_output *output, pixman_region32_t *damage) { struct weston_compositor *ec = output->base.compositor; @@ -736,7 +738,6 @@ drm_output_render_pixman(struct drm_output *output, pixman_region32_t *damage) output->current_image ^= 1; - output->fb_pending = drm_fb_ref(output->dumb[output->current_image]); pixman_renderer_output_set_buffer(&output->base, output->image[output->current_image]); @@ -744,6 +745,8 @@ drm_output_render_pixman(struct drm_output *output, pixman_region32_t *damage) pixman_region32_fini(&total_damage); pixman_region32_fini(&previous_damage); + + return drm_fb_ref(output->dumb[output->current_image]); } static void @@ -751,6 +754,7 @@ drm_output_render(struct drm_output *output, pixman_region32_t *damage) { struct weston_compositor *c = output->base.compositor; struct drm_backend *b = to_drm_backend(c); + struct drm_fb *fb; /* If we already have a client buffer promoted to scanout, then we don't * want to render. */ @@ -758,9 +762,13 @@ drm_output_render(struct drm_output *output, pixman_region32_t *damage) return; if (b->use_pixman) - drm_output_render_pixman(output, damage); + fb = drm_output_render_pixman(output, damage); else - drm_output_render_gl(output, damage); + fb = drm_output_render_gl(output, damage); + + if (!fb) + return; + output->fb_pending = fb; pixman_region32_subtract(&c->primary_plane.damage, &c->primary_plane.damage, damage);