implemented multi-sampling for full-screen anti-aliasing (FSAA)

git-svn-id: svn://anubis/anaglym/trunk@86 99a6e188-d820-4881-8870-2d33a10e2619

Video.cc

@@ -31,7 +31,8 @@ Video::Video()
     m_inputGrabbed = false;
 }
 
-void Video::start(int width, int height, bool fullscreen, bool grab_input)
+void Video::start(int width, int height, bool fullscreen, bool grab_input,
+        int samples)
 {
     if (m_surface == NULL)
     {
@@ -44,6 +45,11 @@ void Video::start(int width, int height, bool fullscreen, bool grab_input)
             flags |= SDL_FULLSCREEN;
 
         SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+        if (samples > 1)
+        {
+            SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
+            SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, samples);
+        }
         m_surface = SDL_SetVideoMode(width, height, 32, flags);
         if (grab_input)
         {

Video.h

@@ -9,7 +9,8 @@ class Video
     public:
         Video();
         void start(int width = 0, int height = 0,
-                   bool fullscreen = true, bool grab_input = true);
+                   bool fullscreen = true, bool grab_input = true,
+                   int samples = 4);
         void stop();
         int getDefaultWidth() { return m_defaultWidth; }
         int getDefaultHeight() { return m_defaultHeight; }