com.badlogic.gdx.tests.g3d.shadows.system.FirstPassBaseShadowSystem.java Source code

Introduction

Here is the source code for com.badlogic.gdx.tests.g3d.shadows.system.FirstPassBaseShadowSystem.java

Source

/*******************************************************************************
 * 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.tests.g3d.shadows.system;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Pixmap;
import com.badlogic.gdx.graphics.glutils.FrameBuffer;
import com.badlogic.gdx.tests.g3d.shadows.utils.DirectionalAnalyzer;
import com.badlogic.gdx.tests.g3d.shadows.utils.LightFilter;
import com.badlogic.gdx.tests.g3d.shadows.utils.NearFarAnalyzer;
import com.badlogic.gdx.tests.g3d.shadows.utils.ShadowMapAllocator;

/** FirstPassBaseShadowSystem assumes that the first pass renders all depth map in one texture.
 * @author realitix */
public abstract class FirstPassBaseShadowSystem extends BaseShadowSystem {

    protected static int FIRST_PASS = 0;

    public FirstPassBaseShadowSystem() {
        super();
    }

    public FirstPassBaseShadowSystem(NearFarAnalyzer nearFarAnalyzer, ShadowMapAllocator allocator,
            DirectionalAnalyzer directionalAnalyzer, LightFilter lightFilter) {
        super(nearFarAnalyzer, allocator, directionalAnalyzer, lightFilter);
    }

    @Override
    protected void init(int n) {
        if (n == FIRST_PASS)
            init1();
    }

    protected void init1() {
        frameBuffers[FIRST_PASS] = new FrameBuffer(Pixmap.Format.RGBA8888, allocator.getWidth(),
                allocator.getHeight(), true);
    }

    @Override
    protected void beginPass(int n) {
        super.beginPass(n);
        if (n == FIRST_PASS)
            beginPass1();
    };

    protected void beginPass1() {
        allocator.begin();
        Gdx.gl.glClearColor(1, 1, 1, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);
        Gdx.gl.glEnable(GL20.GL_SCISSOR_TEST);
    }

    @Override
    protected void endPass(int n) {
        super.endPass(n);
        if (n == FIRST_PASS)
            endPass1();
    };

    protected void endPass1() {
        allocator.end();
        Gdx.gl.glDisable(GL20.GL_SCISSOR_TEST);
    }
}