am 0d28bb47: Merge "Fix the texture ID reuse issue in HWUI."

* commit '0d28bb47d771a2ac99cec6e4a071a98d2cd705dd':
  Fix the texture ID reuse issue in HWUI.

libs/hwui/Caches.cpp

@@ -554,11 +554,8 @@ void Caches::deleteTexture(GLuint texture) {
     // call, any texture operation will be performed on the default
     // texture (name=0)
 
-    for (int i = 0; i < REQUIRED_TEXTURE_UNITS_COUNT; i++) {
-        if (mBoundTextures[i] == texture) {
-            mBoundTextures[i] = 0;
-        }
-    }
+    unbindTexture(texture);
+
     glDeleteTextures(1, &texture);
 }
 
@@ -566,6 +563,14 @@ void Caches::resetBoundTextures() {
     memset(mBoundTextures, 0, REQUIRED_TEXTURE_UNITS_COUNT * sizeof(GLuint));
 }
 
+void Caches::unbindTexture(GLuint texture) {
+    for (int i = 0; i < REQUIRED_TEXTURE_UNITS_COUNT; i++) {
+        if (mBoundTextures[i] == texture) {
+            mBoundTextures[i] = 0;
+        }
+    }
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // Scissor
 ///////////////////////////////////////////////////////////////////////////////

libs/hwui/Caches.h

@@ -263,6 +263,11 @@ public:
      */
     void resetBoundTextures();
 
+    /**
+     * Clear the cache of bound textures.
+     */
+    void unbindTexture(GLuint texture);
+
     /**
      * Sets the scissor for the current surface.
      */

libs/hwui/Layer.cpp

@@ -171,6 +171,7 @@ void Layer::deleteTexture() {
 }
 
 void Layer::clearTexture() {
+    caches.unbindTexture(texture.id);
     texture.id = 0;
 }