1 files changed, 64 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.gldebugger/src/com/android/ide/eclipse/gltrace/state/transforms/TextureUnitPropertyAccessor.java b/eclipse/plugins/com.android.ide.eclipse.gldebugger/src/com/android/ide/eclipse/gltrace/state/transforms/TextureUnitPropertyAccessor.java
new file mode 100644
index 000000000..2489e14db
--- /dev/null
+++ b/eclipse/plugins/com.android.ide.eclipse.gldebugger/src/com/android/ide/eclipse/gltrace/state/transforms/TextureUnitPropertyAccessor.java
@@ -0,0 +1,64 @@
+/*
+ * 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.state.GLIntegerProperty;
+import com.android.ide.eclipse.gltrace.state.GLStateType;
+import com.android.ide.eclipse.gltrace.state.IGLProperty;
+
+/**
+ * The {@link TextureUnitPropertyAccessor} provides the ability to access a
+ * texture unit property that is indexed based on the run time value of the
+ * {@link GLStateType#ACTIVE_TEXTURE_UNIT} property.
+ */
+public class TextureUnitPropertyAccessor implements IGLPropertyAccessor {
+    private final int mContextId;
+    private final IGLPropertyAccessor mActiveTextureAccessor;
+    private final GLStateType mTargetType;
+
+    public TextureUnitPropertyAccessor(int contextId, GLStateType targetPropertyType) {
+        mContextId = contextId;
+        mTargetType = targetPropertyType;
+
+        mActiveTextureAccessor = GLPropertyAccessor.makeAccessor(mContextId,
+                GLStateType.TEXTURE_STATE,
+                GLStateType.ACTIVE_TEXTURE_UNIT);
+    }
+
+    @Override
+    public IGLProperty getProperty(IGLProperty state) {
+        // first extract the current active texture unit
+        IGLProperty activeTextureProperty = mActiveTextureAccessor.getProperty(state);
+        if (!(activeTextureProperty instanceof GLIntegerProperty)) {
+            return null;
+        }
+        Integer activeTexture = (Integer) activeTextureProperty.getValue();
+
+        // extract the required property for the current texture unit
+        IGLPropertyAccessor targetAccessor = GLPropertyAccessor.makeAccessor(mContextId,
+                GLStateType.TEXTURE_STATE,
+                GLStateType.TEXTURE_UNITS,
+                activeTexture,
+                mTargetType);
+        return targetAccessor.getProperty(state);
+    }
+
+    @Override
+    public String getPath() {
+        return String.format("TEXTURE_STATE/TEXTURE_UNITS/${activeTextureUnit}/%s", mTargetType);
+    }
+}