com.badlogic.gdx.graphics.profiling.GLProfiler.java Source code

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Here is the source code for com.badlogic.gdx.graphics.profiling.GLProfiler.java

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/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * 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.badlogic.gdx.graphics.profiling;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.math.FloatCounter;

/** This class will collect statistics about the GL calls. All calls to it will get counted and delegated to the actual GL20 or
 * GL30 instance.
 * 
 * @see GL20Profiler
 * @see GL30Profiler
 * 
 * @author Daniel Holderbaum */
public abstract class GLProfiler {

    /** All calls to any GL function since the last reset. */
    public static int calls;

    /** The amount of times a texture binding has happened since the last reset. */
    public static int textureBindings;

    /** The amount of draw calls that happened since the last reset. */
    public static int drawCalls;

    /** The amount of times a shader was switched since the last reset. */
    public static int shaderSwitches;

    /** The amount rendered vertices since the last reset. */
    public static FloatCounter vertexCount = new FloatCounter(0);

    /** Enables profiling by replacing the {@code GL20} and {@code GL30} instances with profiling ones. */
    public static void enable() {
        Gdx.gl30 = Gdx.gl30 == null ? null : new GL30Profiler(Gdx.gl30);
        Gdx.gl20 = Gdx.gl30 != null ? Gdx.gl30 : new GL20Profiler(Gdx.gl20);
        Gdx.gl = Gdx.gl20;
    }

    /** Disables profiling by resetting the {@code GL20} and {@code GL30} instances with the original ones. */
    public static void disable() {
        if (Gdx.gl30 != null && Gdx.gl30 instanceof GL30Profiler)
            Gdx.gl30 = ((GL30Profiler) Gdx.gl30).gl30;
        if (Gdx.gl20 != null && Gdx.gl20 instanceof GL20Profiler)
            Gdx.gl20 = ((GL20Profiler) Gdx.gl).gl20;
        if (Gdx.gl != null && Gdx.gl instanceof GL20Profiler)
            Gdx.gl = ((GL20Profiler) Gdx.gl).gl20;
    }

    /** Will reset the statistical information which has been collected so far. This should be called after every frame. */
    public static void reset() {
        calls = 0;
        textureBindings = 0;
        drawCalls = 0;
        shaderSwitches = 0;
        vertexCount.reset();
    }

}