[PATCH v2] ui/sdl2: OpenGL window context

[Antonio Caggiano]

When OpenGL is enabled, create only the OpenGL context, ignoring the SDL
renderer as it is unused anyway.

Signed-off-by: Antonio Caggiano <quic_acaggian@quicinc.com>
---
v2: There is no need to specify major and minor version if the SDL renderer is
    not created. Also, tested on Windows.

 ui/sdl2.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/ui/sdl2.c b/ui/sdl2.c
index 9d703200bf..cf1833b1ad 100644
--- a/ui/sdl2.c
+++ b/ui/sdl2.c
@@ -104,7 +104,11 @@ void sdl2_window_create(struct sdl2_console *scon)
                                          surface_width(scon->surface),
                                          surface_height(scon->surface),
                                          flags);
+
     if (scon->opengl) {
+        scon->winctx = SDL_GL_CreateContext(scon->real_window);
+    } else {
+        /* The SDL renderer is only used by sdl2-2D, when OpenGL is disabled */
         const char *driver = "opengl";
 
         if (scon->opts->gl == DISPLAYGL_MODE_ES) {
@@ -113,11 +117,8 @@ void sdl2_window_create(struct sdl2_console *scon)
 
         SDL_SetHint(SDL_HINT_RENDER_DRIVER, driver);
         SDL_SetHint(SDL_HINT_RENDER_BATCHING, "1");
-    }
-    scon->real_renderer = SDL_CreateRenderer(scon->real_window, -1, 0);
 
-    if (scon->opengl) {
-        scon->winctx = SDL_GL_CreateContext(scon->real_window);
+        scon->real_renderer = SDL_CreateRenderer(scon->real_window, -1, 0);
     }
     sdl_update_caption(scon);
 }
@@ -128,10 +129,14 @@ void sdl2_window_destroy(struct sdl2_console *scon)
         return;
     }
 
-    SDL_GL_DeleteContext(scon->winctx);
-    scon->winctx = NULL;
-    SDL_DestroyRenderer(scon->real_renderer);
-    scon->real_renderer = NULL;
+    if (scon->winctx) {
+        SDL_GL_DeleteContext(scon->winctx);
+        scon->winctx = NULL;
+    }
+    if (scon->real_renderer) {
+        SDL_DestroyRenderer(scon->real_renderer);
+        scon->real_renderer = NULL;
+    }
     SDL_DestroyWindow(scon->real_window);
     scon->real_window = NULL;
 }
-- 
2.40.0