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/*
* 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);
}
}
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