1 files changed, 71 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.gldebugger/src/com/android/ide/eclipse/gltrace/state/transforms/CurrentVboPropertyAccessor.java b/eclipse/plugins/com.android.ide.eclipse.gldebugger/src/com/android/ide/eclipse/gltrace/state/transforms/CurrentVboPropertyAccessor.java
new file mode 100644
index 000000000..bd1286d5b
--- /dev/null
+++ b/eclipse/plugins/com.android.ide.eclipse.gldebugger/src/com/android/ide/eclipse/gltrace/state/transforms/CurrentVboPropertyAccessor.java
@@ -0,0 +1,71 @@
+/*
+ * 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.ide.eclipse.gltrace.state.transforms;
+
+import com.android.ide.eclipse.gltrace.GLEnum;
+import com.android.ide.eclipse.gltrace.state.GLIntegerProperty;
+import com.android.ide.eclipse.gltrace.state.GLStateType;
+import com.android.ide.eclipse.gltrace.state.IGLProperty;
+
+/**
+ * An {@link IGLPropertyAccessor} that retrieves the requested property in the
+ * currently bound {@link GLEnum#GL_ARRAY_BUFFER} or {@link GLEnum#GL_ELEMENT_ARRAY_BUFFER}.
+ */
+public class CurrentVboPropertyAccessor implements IGLPropertyAccessor {
+    private final int mContextId;
+    private final IGLPropertyAccessor mVboBindingAccessor;
+    private final GLStateType mVboProperty;
+
+    public CurrentVboPropertyAccessor(int contextId, GLEnum target, GLStateType vboProperty) {
+        mContextId = contextId;
+        mVboProperty = vboProperty;
+
+        GLStateType vboType;
+        if (target == GLEnum.GL_ARRAY_BUFFER) {
+            vboType = GLStateType.ARRAY_BUFFER_BINDING;
+        } else {
+            vboType = GLStateType.ELEMENT_ARRAY_BUFFER_BINDING;
+        }
+
+        mVboBindingAccessor = GLPropertyAccessor.makeAccessor(contextId,
+                GLStateType.VERTEX_ARRAY_DATA,
+                GLStateType.BUFFER_BINDINGS,
+                vboType);
+    }
+
+    @Override
+    public IGLProperty getProperty(IGLProperty state) {
+        // obtain the current bound buffer
+        IGLProperty currentBinding = mVboBindingAccessor.getProperty(state);
+        if (!(currentBinding instanceof GLIntegerProperty)) {
+            return null;
+        }
+
+        Integer buffer = (Integer) currentBinding.getValue();
+
+        return GLPropertyAccessor.makeAccessor(mContextId,
+                                               GLStateType.VERTEX_ARRAY_DATA,
+                                               GLStateType.VBO,
+                                               buffer,
+                                               mVboProperty).getProperty(state);
+    }
+
+    @Override
+    public String getPath() {
+        return String.format("VERTEX_ARRAY_DATA/VBO/${currentBuffer}/%s", mVboProperty);
+    }
+}