diff options
Diffstat (limited to 'eclipse/plugins/com.android.ide.eclipse.gldebugger/src/com/android/ide/eclipse/gltrace/state/transforms/BufferSubDataTransform.java')
-rw-r--r-- | eclipse/plugins/com.android.ide.eclipse.gldebugger/src/com/android/ide/eclipse/gltrace/state/transforms/BufferSubDataTransform.java | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.gldebugger/src/com/android/ide/eclipse/gltrace/state/transforms/BufferSubDataTransform.java b/eclipse/plugins/com.android.ide.eclipse.gldebugger/src/com/android/ide/eclipse/gltrace/state/transforms/BufferSubDataTransform.java new file mode 100644 index 000000000..393f1b9b7 --- /dev/null +++ b/eclipse/plugins/com.android.ide.eclipse.gldebugger/src/com/android/ide/eclipse/gltrace/state/transforms/BufferSubDataTransform.java @@ -0,0 +1,76 @@ +/* + * 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.GLProtoBuf.GLMessage.Function; +import com.android.ide.eclipse.gltrace.state.IGLProperty; + +import java.nio.ByteBuffer; + +/** + * A {@link BufferSubDataTransform} updates a portion of the buffer data as specified by + * the {@link Function#glBufferSubData} function. + */ +public class BufferSubDataTransform implements IStateTransform { + private final IGLPropertyAccessor mAccessor; + private final int mOffset; + + private final byte[] mSubData; + private byte[] mOldData; + private byte[] mNewData; + + public BufferSubDataTransform(IGLPropertyAccessor accessor, int offset, byte[] data) { + mAccessor = accessor; + mOffset = offset; + mSubData = data; + } + + @Override + public void apply(IGLProperty state) { + IGLProperty property = mAccessor.getProperty(state); + mOldData = (byte[]) property.getValue(); + + if (mOldData != null) { + mNewData = new byte[mOldData.length]; + ByteBuffer bb = ByteBuffer.wrap(mNewData); + + // copy all of the old buffer + bb.put(mOldData); + bb.rewind(); + + // update with the sub buffer data at specified offset + bb.position(mOffset); + bb.put(mSubData); + } + + property.setValue(mNewData); + } + + @Override + public void revert(IGLProperty state) { + if (mOldData != null) { + IGLProperty property = mAccessor.getProperty(state); + property.setValue(mOldData); + mOldData = null; + } + } + + @Override + public IGLProperty getChangedProperty(IGLProperty state) { + return mAccessor.getProperty(state); + } +} |