Add sdl_renderer:get_output_size/1

4 files changed, 41 insertions, 0 deletions

diff --git a/c_src/esdl2.h b/c_src/esdl2.h
index f0e54c9..34871be 100644
--- a/c_src/esdl2.h
+++ b/c_src/esdl2.h
@@ -152,6 +152,7 @@
 	F(get_num_render_drivers, 0) \
 	F(get_render_draw_blend_mode, 1) \
 	F(get_render_draw_color, 1) \
+	F(get_render_output_size, 1) \
 	F(render_clear, 1) \
 	F(render_copy, 4) \
 	F(render_present, 1) \
diff --git a/c_src/sdl_renderer.c b/c_src/sdl_renderer.c
index 7787a3c..e3155ae 100644
--- a/c_src/sdl_renderer.c
+++ b/c_src/sdl_renderer.c
@@ -163,6 +163,34 @@ NIF_FUNCTION(get_render_draw_color)
 		NIF_RES_GET(Renderer, renderer_res));
 }
 
+// get_render_output_size
+
+NIF_CALL_HANDLER(thread_get_render_output_size)
+{
+	int w, h;
+
+	if (SDL_GetRendererOutputSize(args[0], &w, &h))
+		return sdl_error_tuple(env);
+
+	return enif_make_tuple2(env,
+		atom_ok,
+		enif_make_tuple2(env,
+			enif_make_int(env, w),
+			enif_make_int(env, h)
+		)
+	);
+}
+
+NIF_FUNCTION(get_render_output_size)
+{
+	void* renderer_res;
+
+	BADARG_IF(!enif_get_resource(env, argv[0], res_Renderer, &renderer_res));
+
+	return nif_thread_call(env, thread_get_render_output_size, 1,
+		NIF_RES_GET(Renderer, renderer_res));
+}
+
 // render_clear
 
 NIF_CALL_HANDLER(thread_render_clear)
diff --git a/src/esdl2.erl b/src/esdl2.erl
index a64ee4c..c0ca182 100644
--- a/src/esdl2.erl
+++ b/src/esdl2.erl
@@ -57,6 +57,7 @@
 -export([get_num_render_drivers/0]).
 -export([get_render_draw_blend_mode/1]).
 -export([get_render_draw_color/1]).
+-export([get_render_output_size/1]).
 -export([render_clear/1]).
 -export([render_copy/4]).
 -export([render_present/1]).
@@ -219,6 +220,9 @@ get_render_draw_blend_mode(_) ->
 get_render_draw_color(_) ->
 	erlang:nif_error({not_loaded, ?MODULE}).
 
+get_render_output_size(_) ->
+	erlang:nif_error({not_loaded, ?MODULE}).
+
 render_clear(_) ->
 	erlang:nif_error({not_loaded, ?MODULE}).
 
diff --git a/src/sdl_renderer.erl b/src/sdl_renderer.erl
index 01bc314..7d56f19 100644
--- a/src/sdl_renderer.erl
+++ b/src/sdl_renderer.erl
@@ -18,6 +18,7 @@
 -export([count_drivers/0]).
 -export([get_draw_blend_mode/1]).
 -export([get_draw_color/1]).
+-export([get_output_size/1]).
 -export([clear/1]).
 -export([copy/2]).
 -export([copy/4]).
@@ -47,6 +48,13 @@ get_draw_color(Renderer) ->
 		Mode
 	end.
 
+get_output_size(Renderer) ->
+	esdl2:get_render_output_size(Renderer),
+	receive {'_nif_thread_ret_', Ret} ->
+		{ok, Mode} = Ret,
+		Mode
+	end.
+
 clear(Renderer) ->
 	esdl2:render_clear(Renderer),
 	receive {'_nif_thread_ret_', Ret} -> Ret end.