weston_buffer: Make use of weston_buffer->type

Rather than calling accessors (wl_shm_buffer_get etc) to figure out
which type our buffer is, just look in the structure.

Signed-off-by: Daniel Stone <daniels@collabora.com>

libweston/backend-drm/fb.c

@@ -522,7 +522,6 @@ drm_fb_get_from_view(struct drm_output_state *state, struct weston_view *ev,
 	struct weston_buffer *buffer = ev->surface->buffer_ref.buffer;
 	struct drm_buffer_fb *buf_fb;
 	bool is_opaque = weston_view_is_opaque(ev, &ev->transform.boundingbox);
-	struct linux_dmabuf_buffer *dmabuf;
 	struct drm_fb *fb;
 	struct drm_plane *plane;
 
@@ -550,20 +549,16 @@ drm_fb_get_from_view(struct drm_output_state *state, struct weston_view *ev,
 	buf_fb->buffer_destroy_listener.notify = drm_fb_handle_buffer_destroy;
 	wl_signal_add(&buffer->destroy_signal, &buf_fb->buffer_destroy_listener);
 
-	if (wl_shm_buffer_get(buffer->resource))
-		goto unsuitable;
-
 	/* GBM is used for dmabuf import as well as from client wl_buffer. */
 	if (!b->gbm)
 		goto unsuitable;
 
-	dmabuf = linux_dmabuf_buffer_get(buffer->resource);
-	if (dmabuf) {
-		fb = drm_fb_get_from_dmabuf(dmabuf, b, is_opaque,
+	if (buffer->type == WESTON_BUFFER_DMABUF) {
+		fb = drm_fb_get_from_dmabuf(buffer->dmabuf, b, is_opaque,
 					    &buf_fb->failure_reasons);
 		if (!fb)
 			goto unsuitable;
-	} else {
+	} else if (buffer->type == WESTON_BUFFER_RENDERER_OPAQUE) {
 		struct gbm_bo *bo;
 
 		bo = gbm_bo_import(b->gbm, GBM_BO_IMPORT_WL_BUFFER,
@@ -576,6 +571,8 @@ drm_fb_get_from_view(struct drm_output_state *state, struct weston_view *ev,
 			gbm_bo_destroy(bo);
 			goto unsuitable;
 		}
+	} else {
+		goto unsuitable;
 	}
 
 	/* Check if this buffer can ever go on any planes. If it can't, we have

libweston/compositor.c

@@ -2584,7 +2584,7 @@ surface_flush_damage(struct weston_surface *surface)
 {
 	struct weston_buffer *buffer = surface->buffer_ref.buffer;
 
-	if (buffer && wl_shm_buffer_get(buffer->resource))
+	if (buffer && buffer->type == WESTON_BUFFER_SHM)
 		surface->compositor->renderer->flush_damage(surface, buffer);
 
 	if (pixman_region32_not_empty(&surface->damage))
@@ -3978,14 +3978,7 @@ surface_commit(struct wl_client *client, struct wl_resource *resource)
 			return;
 		}
 
-		/* We support fences for both wp_linux_dmabuf and opaque EGL
-		 * buffers, as mandated by minor version 2 of the
-		 * zwp_linux_explicit_synchronization_v1 protocol. Since
-		 * renderers that support fences currently only support these
-		 * two buffer types plus SHM buffers, we can just check for the
-		 * SHM buffer case here.
-		 */
-		if (wl_shm_buffer_get(surface->pending.buffer->resource)) {
+		if (surface->pending.buffer->type == WESTON_BUFFER_SHM) {
 			fd_clear(&surface->pending.acquire_fence_fd);
 			wl_resource_post_error(surface->synchronization_resource,
 				ZWP_LINUX_SURFACE_SYNCHRONIZATION_V1_ERROR_UNSUPPORTED_BUFFER,
@@ -7473,30 +7466,30 @@ static void
 debug_scene_view_print_buffer(FILE *fp, struct weston_view *view)
 {
 	struct weston_buffer *buffer = view->surface->buffer_ref.buffer;
-	struct wl_shm_buffer *shm;
-	struct linux_dmabuf_buffer *dmabuf;
+	struct wl_shm_buffer *shm = buffer->shm_buffer;
+	struct linux_dmabuf_buffer *dmabuf = buffer->dmabuf;
 	const struct pixel_format_info *pixel_info = NULL;
+	uint32_t _format;
+	uint64_t modifier;
+	char *modifier_name;
 
 	if (!buffer) {
 		fprintf(fp, "\t\t[buffer not available]\n");
 		return;
 	}
 
-	shm = wl_shm_buffer_get(buffer->resource);
-	if (shm) {
-		uint32_t _format = wl_shm_buffer_get_format(shm);
+	switch (buffer->type) {
+	case WESTON_BUFFER_SHM:
+		_format = wl_shm_buffer_get_format(shm);
 		pixel_info = pixel_format_get_info_shm(_format);
 		fprintf(fp, "\t\tSHM buffer\n");
 		fprintf(fp, "\t\t\tformat: 0x%lx %s\n",
 			(unsigned long) _format,
 			pixel_info ? pixel_info->drm_format_name : "UNKNOWN");
-		return;
-	}
-
-	dmabuf = linux_dmabuf_buffer_get(buffer->resource);
-	if (dmabuf) {
-		uint64_t modifier = dmabuf->attributes.modifier[0];
-		char *modifier_name = pixel_format_get_modifier(modifier);
+		break;
+	case WESTON_BUFFER_DMABUF:
+		modifier = dmabuf->attributes.modifier[0];
+		modifier_name = pixel_format_get_modifier(modifier);
 		pixel_info = pixel_format_get_info(dmabuf->attributes.format);
 		fprintf(fp, "\t\tdmabuf buffer\n");
 		fprintf(fp, "\t\t\tformat: 0x%lx %s\n",
@@ -7506,10 +7499,11 @@ debug_scene_view_print_buffer(FILE *fp, struct weston_view *view)
 		fprintf(fp, "\t\t\tmodifier: %s\n", modifier_name ? modifier_name :
 				"Failed to convert to a modifier name");
 		free(modifier_name);
-		return;
-	}
-
+		break;
+	default:
 		fprintf(fp, "\t\tEGL buffer\n");
+		break;
+	}
 }
 
 static void

libweston/noop-renderer.c

@@ -63,13 +63,12 @@ noop_renderer_attach(struct weston_surface *es, struct weston_buffer *buffer)
 	if (!buffer)
 		return;
 
-	shm_buffer = wl_shm_buffer_get(buffer->resource);
-
-	if (!shm_buffer) {
+	if (buffer->type != WESTON_BUFFER_SHM) {
 		weston_log("No-op renderer supports only SHM buffers\n");
 		return;
 	}
 
+	shm_buffer = buffer->shm_buffer;
 	data = wl_shm_buffer_get_data(shm_buffer);
 	stride = wl_shm_buffer_get_stride(shm_buffer);
 	width = wl_shm_buffer_get_width(shm_buffer);

libweston/pixman-renderer.c

@@ -644,15 +644,15 @@ pixman_renderer_attach(struct weston_surface *es, struct weston_buffer *buffer)
 	if (!buffer)
 		return;
 
-	shm_buffer = wl_shm_buffer_get(buffer->resource);
-
-	if (! shm_buffer) {
+	if (buffer->type != WESTON_BUFFER_SHM) {
 		weston_log("Pixman renderer supports only SHM buffers\n");
 		weston_buffer_reference(&ps->buffer_ref, NULL);
 		weston_buffer_release_reference(&ps->buffer_release_ref, NULL);
 		return;
 	}
 
+	shm_buffer = buffer->shm_buffer;
+
 	pixel_info = pixel_format_get_info_shm(wl_shm_buffer_get_format(shm_buffer));
 	if (!pixel_info || !pixman_format_supported_source(pixel_info->pixman_format)) {
 		weston_log("Unsupported SHM buffer format 0x%x\n",

libweston/renderer-gl/gl-renderer.c

@@ -888,7 +888,7 @@ ensure_surface_buffer_is_ready(struct gl_renderer *gr,
 	assert(gr->has_native_fence_sync);
 	/* We should only get a fence for non-SHM buffers, since surface
 	 * commit would have failed otherwise. */
-	assert(wl_shm_buffer_get(buffer->resource) == NULL);
+	assert(buffer->type != WESTON_BUFFER_SHM);
 
 	attribs[1] = dup(surface->acquire_fence_fd);
 	if (attribs[1] == -1) {
@@ -2938,8 +2938,6 @@ gl_renderer_attach(struct weston_surface *es, struct weston_buffer *buffer)
 	struct weston_compositor *ec = es->compositor;
 	struct gl_renderer *gr = get_renderer(ec);
 	struct gl_surface_state *gs = get_surface_state(es);
-	struct wl_shm_buffer *shm_buffer;
-	struct linux_dmabuf_buffer *dmabuf;
 	EGLint format;
 	int i;
 
@@ -2962,17 +2960,26 @@ gl_renderer_attach(struct weston_surface *es, struct weston_buffer *buffer)
 		return;
 	}
 
-	shm_buffer = wl_shm_buffer_get(buffer->resource);
-
-	if (shm_buffer)
-		gl_renderer_attach_shm(es, buffer, shm_buffer);
-	else if (gr->has_bind_display &&
-		 gr->query_buffer(gr->egl_display, (void *)buffer->resource,
-				  EGL_TEXTURE_FORMAT, &format))
+	switch (buffer->type) {
+	case WESTON_BUFFER_SHM:
+		gl_renderer_attach_shm(es, buffer, buffer->shm_buffer);
+		return;
+	case WESTON_BUFFER_DMABUF:
+		gl_renderer_attach_dmabuf(es, buffer, buffer->dmabuf);
+		return;
+	case WESTON_BUFFER_RENDERER_OPAQUE:
+		if (!gr->has_bind_display ||
+		    !gr->query_buffer(gr->egl_display,
+		    		      buffer->legacy_buffer,
+				      EGL_TEXTURE_FORMAT, &format)) {
+			break;
+		}
 		gl_renderer_attach_egl(es, buffer, format);
-	else if ((dmabuf = linux_dmabuf_buffer_get(buffer->resource)))
-		gl_renderer_attach_dmabuf(es, buffer, dmabuf);
-	else {
+		return;
+	default:
+		break;
+	}
+
 	weston_log("unhandled buffer type!\n");
 	if (gr->has_bind_display) {
 		weston_log("eglQueryWaylandBufferWL failed\n");
@@ -2985,7 +2992,6 @@ gl_renderer_attach(struct weston_surface *es, struct weston_buffer *buffer)
 	es->is_opaque = false;
 	weston_buffer_send_server_error(buffer,
 		"disconnecting due to unhandled buffer type");
-	}
 }
 
 static void
@@ -3232,8 +3238,7 @@ gl_renderer_create_surface(struct weston_surface *surface)
 
 	if (surface->buffer_ref.buffer) {
 		gl_renderer_attach(surface, surface->buffer_ref.buffer);
-		if (surface->buffer_ref.buffer->resource &&
-		    wl_shm_buffer_get(surface->buffer_ref.buffer->resource)) {
+		if (surface->buffer_ref.buffer->type == WESTON_BUFFER_SHM) {
 			gl_renderer_flush_damage(surface,
 						 surface->buffer_ref.buffer);
 		}

libweston/screenshooter.c

@@ -181,7 +181,7 @@ weston_screenshooter_shoot(struct weston_output *output,
 {
 	struct screenshooter_frame_listener *l;
 
-	if (!wl_shm_buffer_get(buffer->resource)) {
+	if (buffer->type != WESTON_BUFFER_SHM) {
 		done(data, WESTON_SCREENSHOOTER_BAD_BUFFER);
 		return -1;
 	}