From 14fe4a6892d96610f10a66e407c0bf66f1a7be08 Mon Sep 17 00:00:00 2001
From: Hannes Janetzek <hannes.janetzek@gmail.com>
Date: Tue, 28 Aug 2012 09:39:17 +0200
Subject: [PATCH] use half the textures, take from non-visible tiles when
 needed

---
 src/org/mapsforge/android/glrenderer/MapRenderer.java  |  4 +---
 src/org/mapsforge/android/glrenderer/TextRenderer.java | 10 ++++++++++
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/src/org/mapsforge/android/glrenderer/MapRenderer.java b/src/org/mapsforge/android/glrenderer/MapRenderer.java
index 7bbf2195..67e49290 100644
--- a/src/org/mapsforge/android/glrenderer/MapRenderer.java
+++ b/src/org/mapsforge/android/glrenderer/MapRenderer.java
@@ -345,8 +345,6 @@ public class MapRenderer implements org.mapsforge.android.IMapRenderer {
 		// Log.d(TAG, "--------------------------------<<");
 	}
 
-	private Object lock = new Object();
-
 	private boolean updateVisibleList(double x, double y, int zdir) {
 		byte zoomLevel = mLastZoom;
 		float scale = mLastScale;
@@ -1144,7 +1142,7 @@ public class MapRenderer implements org.mapsforge.android.IMapRenderer {
 			mVBOs.add(new VertexBufferObject(mVboIds[i]));
 
 		// Set up textures
-		TextRenderer.init(numTiles * 2);
+		TextRenderer.init(numTiles);
 
 		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 		glDisable(GLES20.GL_DEPTH_TEST);
diff --git a/src/org/mapsforge/android/glrenderer/TextRenderer.java b/src/org/mapsforge/android/glrenderer/TextRenderer.java
index b22100d7..11e06c3d 100644
--- a/src/org/mapsforge/android/glrenderer/TextRenderer.java
+++ b/src/org/mapsforge/android/glrenderer/TextRenderer.java
@@ -188,6 +188,16 @@ public class TextRenderer {
 			tex = null;
 		}
 
+		if (tex == null) {
+			for (int i = 0; i < mTextures.length; i++) {
+				tex = mTextures[i];
+				if (!tex.tile.isVisible)
+					break;
+
+				tex = null;
+			}
+		}
+
 		if (tex == null) {
 			Log.d(TAG, "no textures left");
 			return false;