Fix world renderer.

src/minecraft/net/minecraft/src/ChunkProviderGenerate.java

@@ -455,7 +455,7 @@ public class ChunkProviderGenerate implements IChunkProvider
                         var30 = var30 * (1.0D - var40) + -10.0D * var40;
                     }
 
-                    par1ArrayOfDouble[var12] = var30;
+                    par1ArrayOfDouble[var12] = var30 - par3;
                     ++var12;
                 }
             }
@@ -468,7 +468,6 @@ public class ChunkProviderGenerate implements IChunkProvider
     public void generateExtraBlockStorage(BigInteger x, int y, BigInteger z, ExtendedBlockStorage storage) {
     	byte var4 = 4;
         byte var5 = 2;
-        byte var6 = 63;
         int var7 = var4 + 1;
         byte var8 = 3;
         int var9 = var4 + 1;
@@ -491,6 +490,11 @@ public class ChunkProviderGenerate implements IChunkProvider
                      double var27 = (noiseArray[((var10 + 1) * var9 + var11 + 0) * var8 + var12 + 1] - var19) * var13;
                      double var29 = (noiseArray[((var10 + 1) * var9 + var11 + 1) * var8 + var12 + 1] - var21) * var13;
 
+                     var15 += var23 * Math.floorDiv(y, 16);
+                     var17 += var25 * Math.floorDiv(y, 16);
+                     var19 += var27 * Math.floorDiv(y, 16);
+                     var21 += var29 * Math.floorDiv(y, 16);
+                     
                      for (int var31 = 0; var31 < 8; ++var31)
                      {
                          double var32 = 0.25D;

src/minecraft/net/minecraft/src/RenderList.java

@@ -59,7 +59,7 @@ public class RenderList
             {
                 GL11.glPushMatrix();
                 if(profiler != null) profiler.startSection("translate");
-                GL11.glTranslatef((float)(MathHelper.toBigDecimal(this.field_78429_a).subtract(this.field_78425_d).floatValue()), (float)((double)this.field_78427_b - this.field_78426_e), (float)(MathHelper.toBigDecimal(this.field_78428_c).subtract(this.field_78423_f).floatValue()));
+                GL11.glTranslated((float)(MathHelper.toBigDecimal(this.field_78429_a).subtract(this.field_78425_d).floatValue()), (this.field_78427_b - this.field_78426_e), (float)(MathHelper.toBigDecimal(this.field_78428_c).subtract(this.field_78423_f).floatValue()));
                 if(profiler != null) profiler.endStartSection("opengl");
                 GL11.glCallLists(this.field_78424_g);
                 if(profiler != null) profiler.endSection();

src/minecraft/net/minecraft/src/WorldRenderer.java

@@ -107,7 +107,7 @@ public class WorldRenderer
             this.posYPlus = par2 + 8;
             this.posZPlus = par3.add(BigInteger.valueOf(8));
             this.posXClip = par1.intValue() & 1023;
-            this.posYClip = par2;
+            this.posYClip = par2 & 1023;
             this.posZClip = par3.intValue() & 1023;
             this.posXMinus = par1.subtract(BigInteger.valueOf(posXClip));
             this.posYMinus = par2 - this.posYClip;