com.grillecube.engine.renderer.world.particles.ProgramParticleBillboarded.java Source code

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Here is the source code for com.grillecube.engine.renderer.world.particles.ProgramParticleBillboarded.java

Source

/**
**   This file is part of the project https://github.com/toss-dev/VoxelEngine
**
**   License is available here: https://raw.githubusercontent.com/toss-dev/VoxelEngine/master/LICENSE.md
**
**   PEREIRA Romain
**                                       4-----7          
**                                      /|    /|
**                                     0-----3 |
**                                     | 5___|_6
**                                     |/    | /
**                                     1-----2
*/

package com.grillecube.engine.renderer.world.particles;

import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL13;
import org.lwjgl.opengl.GL20;
import org.lwjgl.opengl.GL32;

import com.grillecube.engine.opengl.GLH;
import com.grillecube.engine.opengl.object.GLProgram;
import com.grillecube.engine.renderer.camera.CameraProjectiveWorld;
import com.grillecube.engine.resources.R;

public class ProgramParticleBillboarded extends GLProgram {
    protected int _color;
    protected int _maxhealth;
    protected int _health;
    protected int _mvp_matrix;

    private int _cols;
    private int _lines;

    private int _position;
    private int _scale;
    private int _camera_pos;

    public ProgramParticleBillboarded() {
        super();
        this.addShader(GLH.glhLoadShader(R.getResPath("shaders/billboards.gs"), GL32.GL_GEOMETRY_SHADER));
        this.addShader(GLH.glhLoadShader(R.getResPath("shaders/billboards.vs"), GL20.GL_VERTEX_SHADER));
        this.addShader(GLH.glhLoadShader(R.getResPath("shaders/billboards.fs"), GL20.GL_FRAGMENT_SHADER));
        this.link();
    }

    @Override
    public void bindAttributes() {
    }

    @Override
    public void linkUniforms() {
        this._cols = super.getUniform("cols");
        this._lines = super.getUniform("lines");

        this._maxhealth = super.getUniform("maxhealth");
        this._health = super.getUniform("health");
        this._color = super.getUniform("color");

        this._position = super.getUniform("position");
        this._scale = super.getUniform("scale");

        this._mvp_matrix = super.getUniform("mvp_matrix");
        this._camera_pos = super.getUniform("camera_pos");
    }

    /** load particle instance uniforms */
    public void loadInstanceUniforms(ParticleBillboarded particle) {
        particle.getSprite().getTexture().bind(GL13.GL_TEXTURE0, GL11.GL_TEXTURE_2D);
        if (particle.isGlowing()) {
            GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE);
        } else {
            GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
        }
        super.loadUniformInteger(this._lines, particle.getSprite().getLines());
        super.loadUniformInteger(this._cols, particle.getSprite().getCols());
        super.loadUniformInteger(this._maxhealth, particle.getMaxHealth());
        super.loadUniformInteger(this._health, particle.getHealth());

        super.loadUniformVec(this._color, particle.getColor());
        super.loadUniformVec(this._position, particle.getPosition());
        super.loadUniformVec(this._scale, particle.getScale());
    }

    public void loadGlobalUniforms(CameraProjectiveWorld camera) {
        super.loadUniformVec(this._camera_pos, camera.getPosition());
        super.loadUniformMatrix(this._mvp_matrix, camera.getMVPMatrix());
    }
}