From 70d820be252ed530dd456b0d4c3fc84a3377f8c8 Mon Sep 17 00:00:00 2001
From: emersion <contact@emersion.fr>
Date: Fri, 20 Apr 2018 23:58:30 +0100
Subject: [PATCH] Add wlr_renderer_init_wl_shm to advertize supported renderer
 formats

---
 include/wlr/render/wlr_renderer.h |  2 ++
 render/wlr_renderer.c             | 20 ++++++++++++++++++++
 rootston/main.c                   |  2 +-
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/include/wlr/render/wlr_renderer.h b/include/wlr/render/wlr_renderer.h
index 9ead7d81..eb365762 100644
--- a/include/wlr/render/wlr_renderer.h
+++ b/include/wlr/render/wlr_renderer.h
@@ -92,6 +92,8 @@ bool wlr_renderer_read_pixels(struct wlr_renderer *r, enum wl_shm_format fmt,
  */
 bool wlr_renderer_format_supported(struct wlr_renderer *r,
 	enum wl_shm_format fmt);
+void wlr_renderer_init_wl_shm(struct wlr_renderer *r,
+	struct wl_display *display);
 /**
  * Destroys this wlr_renderer. Textures must be destroyed separately.
  */
diff --git a/render/wlr_renderer.c b/render/wlr_renderer.c
index 80649b8c..a41ae388 100644
--- a/render/wlr_renderer.c
+++ b/render/wlr_renderer.c
@@ -4,6 +4,7 @@
 #include <wlr/render/interface.h>
 #include <wlr/render/wlr_renderer.h>
 #include <wlr/types/wlr_matrix.h>
+#include <wlr/util/log.h>
 
 void wlr_renderer_init(struct wlr_renderer *renderer,
 		const struct wlr_renderer_impl *impl) {
@@ -151,3 +152,22 @@ bool wlr_renderer_format_supported(struct wlr_renderer *r,
 		enum wl_shm_format fmt) {
 	return r->impl->format_supported(r, fmt);
 }
+
+void wlr_renderer_init_wl_shm(struct wlr_renderer *r,
+		struct wl_display *display) {
+	if (wl_display_init_shm(display)) {
+		wlr_log(L_ERROR, "Failed to initialize shm");
+		return;
+	}
+
+	size_t len;
+	const enum wl_shm_format *formats = wlr_renderer_get_formats(r, &len);
+	if (formats == NULL) {
+		wlr_log(L_ERROR, "Failed to initialize shm: cannot get formats");
+		return;
+	}
+
+	for (size_t i = 0; i < len; ++i) {
+		wl_display_add_shm_format(display, formats[i]);
+	}
+}
diff --git a/rootston/main.c b/rootston/main.c
index cfa3e4aa..a61d65c9 100644
--- a/rootston/main.c
+++ b/rootston/main.c
@@ -43,7 +43,7 @@ int main(int argc, char **argv) {
 	assert(server.renderer);
 	server.data_device_manager =
 		wlr_data_device_manager_create(server.wl_display);
-	wl_display_init_shm(server.wl_display);
+	wlr_renderer_init_wl_shm(server.renderer, server.wl_display);
 	server.desktop = desktop_create(&server, server.config);
 	server.input = input_create(&server, server.config);