SDL3 EGL: try GLES API when desktop GL bind fails (Mali / gl4es)

projects/ROCKNIX/packages/graphics/SDL3/patches/0008-egl-check-eglBindAPI-return-value.patch

@@ -1,29 +1,34 @@
-Subject: [PATCH] video: egl: check eglBindAPI return value
+Subject: [PATCH] video: egl: fall back to GLES when desktop GL eglBindAPI fails
 
-eglBindAPI(EGL_OPENGL_API) can fail on GLES-only drivers (e.g. libmali)
-that do not support desktop OpenGL.  Without checking the return value,
-SDL proceeds to create what it thinks is a desktop GL context (but is
-actually GLES), then crashes when calling desktop GL functions on it.
+eglBindAPI(EGL_OPENGL_API) fails on GLES-only drivers (e.g. libmali)
+that do not support desktop OpenGL.  Rather than returning NULL (which
+breaks SDL 1.2 ports using gl4es through box86 → SDL2-compat → SDL3),
+fall back to EGL_OPENGL_ES_API so the context can still be created.
 
-Check the return value and fail early so the renderer fallback logic can
-try the next backend (opengles2).
+gl4es translates desktop GL calls into GLES internally, so an ES EGL
+context is correct on these devices.
 
 ---
- src/video/SDL_egl.c | 5 ++++-
- 1 file changed, 4 insertions(+), 1 deletion(-)
+ src/video/SDL_egl.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
 
 diff --git a/src/video/SDL_egl.c b/src/video/SDL_egl.c
 --- a/src/video/SDL_egl.c
 +++ b/src/video/SDL_egl.c
-@@ -746,7 +746,10 @@
+@@ -746,7 +746,15 @@
      } else {
          _this->egl_data->apitype = EGL_OPENGL_API;
      }
 -    _this->egl_data->eglBindAPI(_this->egl_data->apitype);
 +    if (!_this->egl_data->eglBindAPI(_this->egl_data->apitype)) {
-+        SDL_SetError("Could not bind EGL API");
-+        return NULL;
++        /* GLES-only driver (e.g. libmali): desktop GL unavailable.
++         * Fall back to GLES so gl4es / ES-native apps still work. */
++        _this->egl_data->apitype = EGL_OPENGL_ES_API;
++        if (!_this->egl_data->eglBindAPI(_this->egl_data->apitype)) {
++            SDL_SetError("Could not bind EGL API (tried GL and GLES)");
++            return NULL;
++        }
 +    }
-
+ 
      egl_context = _this->egl_data->eglCreateContext(_this->egl_data->egl_display,
                                                      _this->egl_data->egl_config,