diff --git a/src/com/badlogic/gdx/graphics/g2d/UnpackedColourSpriteBatch.java b/src/com/badlogic/gdx/graphics/g2d/UnpackedColourSpriteBatch.java
index 681b36333..0b5424a2b 100644
--- a/src/com/badlogic/gdx/graphics/g2d/UnpackedColourSpriteBatch.java
+++ b/src/com/badlogic/gdx/graphics/g2d/UnpackedColourSpriteBatch.java
@@ -103,6 +103,8 @@ public class UnpackedColourSpriteBatch extends SpriteBatch {
      * @param size The max number of sprites in a single batch. Max of 8191.
      * @param defaultShader The default shader to use. This is not owned by the SpriteBatch and must be disposed separately. */
     public UnpackedColourSpriteBatch (int size, ShaderProgram defaultShader) {
+        super(size, defaultShader);
+
         // 32767 is max vertex index, so 32767 / 4 vertices per sprite = 8191 sprites max.
         if (size > 8191) throw new IllegalArgumentException("Can't have more than 8191 sprites per batch: " + size);
 
@@ -116,7 +118,7 @@ public class UnpackedColourSpriteBatch extends SpriteBatch {
 
         projectionMatrix.setToOrtho2D(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
 
-        vertices = new float[size * 4 * 8];
+        vertices = new float[size * 48];
 
         int len = size * 6;
         short[] indices = new short[len];
@@ -1222,7 +1224,7 @@ public class UnpackedColourSpriteBatch extends SpriteBatch {
 
         renderCalls++;
         totalRenderCalls++;
-        int spritesInBatch = idx / 20;
+        int spritesInBatch = idx / 48;
         if (spritesInBatch > maxSpritesInBatch) maxSpritesInBatch = spritesInBatch;
         int count = spritesInBatch * 6;
 
diff --git a/src/shaders/clouds.frag b/src/shaders/clouds.frag
index 0c6ff58f6..50bedf6cc 100644
--- a/src/shaders/clouds.frag
+++ b/src/shaders/clouds.frag
@@ -2,7 +2,7 @@
 
 
 in vec4 v_color; // lightCol
-in vec4 v_generic; // gamma values
+in vec4 v_generic; // gamma values [rgb gam, a gam, 0, 0]
 in vec2 v_texCoords;
 uniform sampler2D u_texture;
 out vec4 fragColor;
@@ -12,14 +12,6 @@ const vec2 boolean = vec2(0.0, 1.0);
 uniform vec4 shadeCol;
 
 void main() {
-    // vertex colour format:
-    // rrrrrrMM ggggggLL bbbbbbAA aaaaaaaa
-    // where:
-    //    rrrrrr: 6-bit red component
-    //    gggggg: 6-bit green component
-    //    bbbbbb: 6-bit blue component
-    //      MMLL: index to the rgbGammas
-    //        AA: index to the aGammas
     vec4 cloudCol = v_color;
     float rgbGamma = v_generic.x;
     float aGamma = v_generic.y;