From 6cadd2f4bd051c9fbb9686597a7e7249ac60da90 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Mon, 7 Apr 2014 17:21:51 +0200
Subject: Add sdl_renderer:is_target_supported/1

---
 c_src/esdl2.h        |  1 +
 c_src/sdl_renderer.c | 20 ++++++++++++++++++++
 src/esdl2.erl        |  4 ++++
 src/sdl_renderer.erl |  5 +++++
 4 files changed, 30 insertions(+)

diff --git a/c_src/esdl2.h b/c_src/esdl2.h
index e335ae3..dde4f82 100644
--- a/c_src/esdl2.h
+++ b/c_src/esdl2.h
@@ -190,6 +190,7 @@
 	F(render_set_logical_size, 3) \
 	F(render_set_scale, 3) \
 	F(render_set_viewport, 5) \
+	F(render_target_supported, 1) \
 	F(set_render_draw_color, 5) \
 	/* sdl_surface */ \
 	F(img_load, 1) \
diff --git a/c_src/sdl_renderer.c b/c_src/sdl_renderer.c
index c7354c7..0da13d1 100644
--- a/c_src/sdl_renderer.c
+++ b/c_src/sdl_renderer.c
@@ -875,6 +875,26 @@ NIF_FUNCTION(render_set_viewport)
 		NIF_RES_GET(Renderer, renderer_res), x, y, w, h);
 }
 
+// get_window_grab
+
+NIF_CALL_HANDLER(thread_render_target_supported)
+{
+	if (SDL_RenderTargetSupported(args[0]))
+		return atom_true;
+
+	return atom_false;
+}
+
+NIF_FUNCTION(render_target_supported)
+{
+	void* renderer_res;
+
+	BADARG_IF(!enif_get_resource(env, argv[0], res_Renderer, &renderer_res));
+
+	return nif_thread_call(env, thread_render_target_supported, 1,
+		NIF_RES_GET(Renderer, renderer_res));
+}
+
 // set_render_draw_color
 
 NIF_CALL_HANDLER(thread_set_render_draw_color)
diff --git a/src/esdl2.erl b/src/esdl2.erl
index 61ca09c..2f7101d 100644
--- a/src/esdl2.erl
+++ b/src/esdl2.erl
@@ -78,6 +78,7 @@
 -export([render_set_logical_size/3]).
 -export([render_set_scale/3]).
 -export([render_set_viewport/5]).
+-export([render_target_supported/1]).
 -export([set_render_draw_color/5]).
 
 %% sdl_surface
@@ -299,6 +300,9 @@ render_set_scale(_, _, _) ->
 render_set_viewport(_, _, _, _, _) ->
 	erlang:nif_error({not_loaded, ?MODULE}).
 
+render_target_supported(_) ->
+	erlang:nif_error({not_loaded, ?MODULE}).
+
 set_render_draw_color(_, _, _, _, _) ->
 	erlang:nif_error({not_loaded, ?MODULE}).
 
diff --git a/src/sdl_renderer.erl b/src/sdl_renderer.erl
index 12ca9bf..e6c6810 100644
--- a/src/sdl_renderer.erl
+++ b/src/sdl_renderer.erl
@@ -39,6 +39,7 @@
 -export([get_output_size/1]).
 -export([get_scale/1]).
 -export([get_viewport/1]).
+-export([is_target_supported/1]).
 -export([present/1]).
 -export([set_clip_rect/2]).
 -export([set_clip_rect/5]).
@@ -153,6 +154,10 @@ get_viewport(Renderer) ->
 	esdl2:render_get_viewport(Renderer),
 	receive {'_nif_thread_ret_', Ret} -> Ret end.
 
+is_target_supported(Renderer) ->
+	esdl2:render_target_supported(Renderer),
+	receive {'_nif_thread_ret_', Ret} -> Ret end.
+
 present(Renderer) ->
 	esdl2:render_present(Renderer).
 
-- 
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