add option to pass SDL init flags to renInit()

include/renderer.h

@@ -57,7 +57,8 @@ struct render_state
 
 render_state*
 renInit(const char* title = "Tangerine",
-	glm::vec2 viewport_dims = glm::vec2(1280, 720));
+	glm::vec2 viewport_dims = glm::vec2(1280, 720),
+	Uint32 SDL_init_flags = 0);
 
 void renShutdown(render_state* rs);
 

src/renderer.cpp

@@ -34,7 +34,7 @@ bool createWindow(const char* title,
 		glm::vec2& viewport_dims);
 bool initContext(SDL_Handles* handles);
 bool initGlOptions();
-bool initSDL(SDL_Handles* handles);
+bool initSDL(SDL_Handles* handles, Uint32 SDL_init_flags);
 bool initShaders(render_state* rs);
 void openglDebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity,
 		GLsizei length, const GLchar* message, const void* userParam);
@@ -44,13 +44,13 @@ void setDefaults(render_state* rs, glm::vec2 viewport_dims);
 // interface
 
 render_state*
-renInit(const char* title, glm::vec2 viewport_dims)
+renInit(const char* title, glm::vec2 viewport_dims, Uint32 SDL_init_flags)
 {
 	render_state* rs = UTIL_ALLOC(1, render_state);
 	rs->handles = UTIL_ALLOC(1, SDL_Handles);
 	setDefaults(rs, viewport_dims);
 
-	if (initSDL(rs->handles) &&
+	if (initSDL(rs->handles, SDL_init_flags) &&
 		createWindow(title, rs->handles, rs->viewport_dims) &&
 		initContext(rs->handles) &&
 		initGlOptions() &&
@@ -242,9 +242,11 @@ initGlOptions()
 }
 
 bool
-initSDL(SDL_Handles* handles)
+initSDL(SDL_Handles* handles, Uint32 SDL_init_flags)
 {
-	if (SDL_Init(SDL_INIT_VIDEO) != 0) {
+	Uint32 flags = SDL_INIT_VIDEO | SDL_init_flags;
+
+	if (SDL_Init(flags) != 0) {
 		LOG(Error) << "Error, SDL_Init: " << SDL_GetError() << "\n";
 		return false;
 	}