com.google.gapid.glviewer.gl.IndexBuffer.java Source code

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Here is the source code for com.google.gapid.glviewer.gl.IndexBuffer.java

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/*
 * Copyright (C) 2017 Google Inc.
 *
 * 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.google.gapid.glviewer.gl;

import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL15;

/**
 * An OpenGL GL_ELEMENT_ARRAY_BUFFER buffer.
 */
public class IndexBuffer extends GlObject {
    final int handle;
    final int count;
    final int type;

    IndexBuffer(Renderer owner, int[] data) {
        super(owner);
        this.handle = GL15.glGenBuffers();
        this.count = data.length;
        this.type = GL11.GL_UNSIGNED_INT;
        owner.register(this);

        bind();
        GL15.glBufferData(GL15.GL_ELEMENT_ARRAY_BUFFER, data, GL15.GL_STATIC_DRAW);
    }

    void bind() {
        GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, handle);
    }

    @Override
    protected void release() {
        GL15.glDeleteBuffers(handle);
    }
}