1 files changed, 60 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/glrenderer/ExtTexture.java b/src/com/android/gallery3d/glrenderer/ExtTexture.java
new file mode 100644
index 000000000..af76300b1
--- /dev/null
+++ b/src/com/android/gallery3d/glrenderer/ExtTexture.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.glrenderer;
+
+// ExtTexture is a texture whose content comes from a external texture.
+// Before drawing, setSize() should be called.
+public class ExtTexture extends BasicTexture {
+
+    private int mTarget;
+
+    public ExtTexture(GLCanvas canvas, int target) {
+        GLId glId = canvas.getGLId();
+        mId = glId.generateTexture();
+        mTarget = target;
+    }
+
+    private void uploadToCanvas(GLCanvas canvas) {
+        canvas.setTextureParameters(this);
+        setAssociatedCanvas(canvas);
+        mState = STATE_LOADED;
+    }
+
+    @Override
+    protected boolean onBind(GLCanvas canvas) {
+        if (!isLoaded()) {
+            uploadToCanvas(canvas);
+        }
+
+        return true;
+    }
+
+    @Override
+    public int getTarget() {
+        return mTarget;
+    }
+
+    @Override
+    public boolean isOpaque() {
+        return true;
+    }
+
+    @Override
+    public void yield() {
+        // we cannot free the texture because we have no backup.
+    }
+}