Changes to wxWidgets/SDL2 port :

- Updated UI
- OpenGL 3.0 with GLSL/GLSLP-support
- Improvements to Windows version
- Minor changes/bugfixes
Patch from bit.

src/wx-sdl2-video.h

@@ -1,18 +1,44 @@
-#include <SDL2/SDL.h>
-
 #define RENDERER_AUTO 0
 #define RENDERER_DIRECT3D 1
 #define RENDERER_OPENGL 2
 #define RENDERER_OPENGLES2 3
 #define RENDERER_OPENGLES 4
 #define RENDERER_SOFTWARE 5
+#define RENDERER_GL3 6
+
+struct sdl_render_driver;
+
+typedef struct sdl_renderer_t {
+        int (*init)(SDL_Window* window, struct sdl_render_driver driver, BITMAP* screen);
+        void (*close)();
+        void (*update)(SDL_Window* window, SDL_Rect updated_rect, BITMAP* screen);
+        void (*present)(SDL_Window* window, SDL_Rect texture_rect, SDL_Rect window_rect, BITMAP* screen);
+        int always_update;
+} sdl_renderer_t;
 
 typedef struct sdl_render_driver {
         int id;
         const char* sdl_id;
         const char* name;
+        int sdl_window_params;
+        sdl_renderer_t* (*renderer_create)();
+        void (*renderer_close)(sdl_renderer_t* renderer);
+        int (*renderer_available)(struct sdl_render_driver* driver);
 } sdl_render_driver;
 
+typedef float (*FLASH_FUNC)(float v);
+
+typedef struct flash_t {
+        int enabled;
+        int time;
+        char color[4];
+        int start;
+        char alpha;
+        FLASH_FUNC func;
+} flash_t;
+
+flash_t flash;
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -30,6 +56,8 @@ sdl_render_driver sdl_get_render_driver_by_id(int id, int def);
 sdl_render_driver sdl_get_render_driver_by_name(const char* name, int def);
 sdl_render_driver* sdl_get_render_driver_by_name_ptr(const char* name);
 
+void color_flash(FLASH_FUNC func, int time_ms, char r, char g, char b, char a);
+
 #ifdef __cplusplus
 }
 #endif