SOL Demo

1 files changed, 49 insertions, 2 deletions

diff --git a/lib/base.cc b/lib/base.cc
index acfc654..fd5c1da 100644
--- a/lib/base.cc
+++ b/lib/base.cc
@@ -46,10 +46,11 @@ int mogltk::base::GetHeight(void) {
     return height;
 }
 
-void mogltk::base::Flip() {
+void mogltk::base::Flip(bool clear) {
     mogltk::engine::pollevents();
     SDL_Flip(surface);
-    SDL_FillRect(surface, NULL, 0);
+    if (clear)
+        SDL_FillRect(surface, NULL, 0);
 }
 
 mogltk::base::base(int w, int h, int flags, int) : surface(0) {
@@ -108,3 +109,49 @@ void mogltk::base::ToggleFullscreen() {
     surface = SDL_SetVideoMode(surface->w, surface->h, surface->format->BitsPerPixel,
         SDL_HWSURFACE | newflags);
 }
+
+inline static unsigned int nextpower(unsigned int n) {
+    unsigned int i;
+
+    if (!n)
+        return n;
+
+    if (ISPOT(n))
+        return n;
+
+    for (i = 31; i >= 0; i--) {
+        if ((n >> i) & 1) {
+            return 1 << (i + 1);
+        }
+    }
+}
+
+mogltk::texture * mogltk::base::GrabTexture() {
+    int w = nextpower(GetWidth());
+    int h = nextpower(GetHeight());
+    texture * r = new texture(w, h);
+
+    SDL_BlitSurface(getsurface(), NULL, r->GetSurface(), NULL);
+
+    return r;
+}
+
+SDL_Surface * mogltk::base::GrabSurface() {
+    SDL_Surface * r = SDL_CreateRGBSurface(SDL_SWSURFACE, GetWidth(), GetHeight(), 24,
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+	0xff000000,
+	0x00ff0000,
+	0x0000ff00,
+	0x00000000
+#else
+	0x000000ff,
+	0x0000ff00,
+	0x00ff0000,
+	0x00000000
+#endif
+        );
+
+    SDL_BlitSurface(getsurface(), NULL, r, NULL);
+
+    return r;
+}