com.mbrlabs.mundus.shader.WireframeShader.java Source code

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Here is the source code for com.mbrlabs.mundus.shader.WireframeShader.java

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/*
 * Copyright (c) 2016. 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.mbrlabs.mundus.shader;

import com.badlogic.gdx.graphics.Camera;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g3d.Renderable;
import com.badlogic.gdx.graphics.g3d.Shader;
import com.badlogic.gdx.graphics.g3d.shaders.BaseShader;
import com.badlogic.gdx.graphics.g3d.utils.RenderContext;
import com.badlogic.gdx.graphics.glutils.ShaderProgram;
import com.mbrlabs.mundus.commons.utils.ShaderUtils;
import com.mbrlabs.mundus.utils.GlUtils;

/**
 * @author Marcus Brummer
 * @version 03-12-2015
 */
public class WireframeShader extends BaseShader {

    private static final String VERTEX_SHADER = "com/mbrlabs/mundus/shader/wire.vert.glsl";
    private static final String FRAGMENT_SHADER = "com/mbrlabs/mundus/shader/wire.frag.glsl";

    protected final int UNIFORM_PROJ_VIEW_MATRIX = register(new Uniform("u_projViewMatrix"));
    protected final int UNIFORM_TRANS_MATRIX = register(new Uniform("u_transMatrix"));

    private ShaderProgram program;

    public WireframeShader() {
        super();
        program = ShaderUtils.compile(VERTEX_SHADER, FRAGMENT_SHADER, false);
    }

    @Override
    public void init() {
        super.init(program, null);
    }

    @Override
    public int compareTo(Shader other) {
        return 0;
    }

    @Override
    public boolean canRender(Renderable instance) {
        return true;
    }

    @Override
    public void begin(Camera camera, RenderContext context) {
        this.context = context;
        this.context.setDepthTest(GL20.GL_LEQUAL, 0f, 1f);
        this.context.setDepthMask(true);

        program.begin();

        set(UNIFORM_PROJ_VIEW_MATRIX, camera.combined);
    }

    @Override
    public void render(Renderable renderable) {
        set(UNIFORM_TRANS_MATRIX, renderable.worldTransform);
        GlUtils.Unsafe.polygonModeWireframe();

        renderable.meshPart.render(program);
    }

    @Override
    public void end() {
        GlUtils.Unsafe.polygonModeFill();
        program.end();
    }

    @Override
    public void dispose() {
        program.dispose();
    }

}