From 86b19d64c2692665aba33e44ee5db6cbf36b6342 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Wed, 13 Sep 2017 21:54:39 +0300
Subject: Add option to select any existing SDL renderer drivers for SDL2
 default mode.

---
 src/utils/sdl2helper.cpp | 39 +++++++++++++++++++++++++++++++++++++++
 src/utils/sdl2helper.h   |  5 +++++
 2 files changed, 44 insertions(+)

(limited to 'src/utils')

diff --git a/src/utils/sdl2helper.cpp b/src/utils/sdl2helper.cpp
index da86d2b41..ad559b0e6 100644
--- a/src/utils/sdl2helper.cpp
+++ b/src/utils/sdl2helper.cpp
@@ -28,10 +28,13 @@
 #include "utils/sdl2logger.h"
 #include "utils/stringutils.h"
 
+#include <algorithm>
+
 PRAGMA48(GCC diagnostic push)
 PRAGMA48(GCC diagnostic ignored "-Wshadow")
 #include <SDL_events.h>
 #include <SDL_hints.h>
+#include <SDL_render.h>
 #include <SDL_syswm.h>
 PRAGMA48(GCC diagnostic pop)
 
@@ -225,4 +228,40 @@ void SDL::allowScreenSaver(const bool allow)
     }
 }
 
+void SDL::getRenderers(StringVect &list,
+                       const std::string &currentRenderer)
+{
+    SDL_RendererInfo info;
+    const int num = SDL_GetNumRenderDrivers();
+    for (int f = 0; f < num; f ++)
+    {
+        if (!SDL_GetRenderDriverInfo(f, &info))
+            list.push_back(info.name);
+    }
+    if (!currentRenderer.empty())
+    {
+        bool found(false);
+        FOR_EACH (StringVectCIter, it, list)
+        {
+            if (*it == currentRenderer)
+            {
+                found = true;
+                break;
+            }
+        }
+        if (!found)
+            list.push_back(currentRenderer);
+    }
+    std::sort(list.begin(), list.end());
+}
+
+void SDL::setRendererHint(const std::string &driver)
+{
+    if (!driver.empty())
+    {
+        SDL_SetHint(SDL_HINT_RENDER_DRIVER,
+            driver.c_str());
+    }
+}
+
 #endif  // USE_SDL2
diff --git a/src/utils/sdl2helper.h b/src/utils/sdl2helper.h
index 4dbbad0f9..6c50bb1be 100644
--- a/src/utils/sdl2helper.h
+++ b/src/utils/sdl2helper.h
@@ -73,6 +73,11 @@ namespace SDL
     bool PollEvent(SDL_Event *event);
 
     void allowScreenSaver(const bool allow);
+
+    void getRenderers(StringVect &list,
+                      const std::string &currentRenderer);
+
+    void setRendererHint(const std::string &driver);
 }  // namespace SDL
 
 #endif  // USE_SDL2
-- 
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