Changeset 24 for trunk/srcTweet

Timestamp:

Jul 1, 2010, 12:54:13 AM (13 years ago)

Author:

sam

Message:

Sort layers before rendering.

Location:

trunk/src

Files:

• test-map.cpp (modified) (1 diff)
• tiler.cpp (modified) (2 diffs)

trunk/src/test-map.cpp

@@ -55 +55 @@
     int playerx, playery;
     SDL_GetMouseState(&playerx, &playery);
-    tiler->AddTile(50, playerx, playery, nlayers);
+    tiler->AddTile(50, playerx, playery, 1);
 
     tiler->Render();

trunk/src/tiler.cpp

@@ -28 +28 @@
 
 private:
+    static int Compare(void const *p1, void const *p2)
+    {
+        int const *n1 = (int const *)p1;
+        int const *n2 = (int const *)p2;
+
+        return n1[2] + 32 * n1[3] - (n2[2] + 32 * n2[3]);
+    }
+
     int *tiles;
     int ntiles;
@@ -91 +99 @@
 void Tiler::Render()
 {
+    /* Sort tiles */
+    qsort(data->tiles, data->ntiles, 4 * sizeof(int), TilerData::Compare);
+
     /* Texture coord buffer */
     float uvs[8 * data->ntiles];