UltralightOpenGLGPUDriverNative.java

/*
 * Ultralight Java - Java wrapper for the Ultralight web engine
 * Copyright (C) 2020 - 2021 LabyMedia and contributors
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package com.labymedia.ultralight.gpu;

import com.labymedia.ultralight.plugin.render.UltralightGPUDriverNative;

import java.util.Queue;

/**
 * Default native OpenGL implementation of the ultralight gpu driver
 */
public class UltralightOpenGLGPUDriverNative implements UltralightGPUDriverNative {

    private final long contextHandle;
    private final long driverHandle;
    private final UltralightGPUDriverNativeUtil util;


    public UltralightOpenGLGPUDriverNative(long window, boolean msaa, long glfwLoaderFunction ) {
        this.util = UltralightGPUDriverNativeUtil.getInstance();
        this.contextHandle = util.createOpenGLContext(window, msaa, glfwLoaderFunction);
        this.driverHandle = util.getDriverFromContext(this.contextHandle);
    }

    public long getContextHandle() {
        return this.contextHandle;
    }

    /**
     * @see <a href="https://docs.ultralig.ht/docs/using-a-custom-gpudriver">Ultralight GPU driver implementation guide</a>
     */
    @Override
    public long getDriverHandle() {
        return this.driverHandle;
    }

    /**
     * @see <a href="https://docs.ultralig.ht/docs/using-a-custom-gpudriver">Ultralight GPU driver implementation guide</a>
     */
    @Override
    public void beginSynchronize() {
        this.util.beginSynchronize(this.driverHandle);
    }

    /**
     * @see <a href="https://docs.ultralig.ht/docs/using-a-custom-gpudriver">Ultralight GPU driver implementation guide</a>
     */
    @Override
    public void endSynchronize() {
        this.util.endSynchronize(this.driverHandle);
    }

    /**
     * @see <a href="https://docs.ultralig.ht/docs/using-a-custom-gpudriver">Ultralight GPU driver implementation guide</a>
     */
    @Override
    public boolean hasCommandsPending() {
        return this.util.hasCommandsPending(this.driverHandle);
    }

    /**
     * @see <a href="https://docs.ultralig.ht/docs/using-a-custom-gpudriver">Ultralight GPU driver implementation guide</a>
     */
    @Override
    public void drawCommandList() {
        this.util.drawCommandList(this.driverHandle);
    }

    /**
     * Bind OpenGL texture for a given OpenGL Context handle to a specified texture index.
     *
     * @param textureId GL_ACTIVE_TEXTURE id
     * @param texture   Ultralight renderTarget texture id
     */
    @Override
    public void bindTexture(long textureId, long texture) {
        this.util.bindTexture(this.driverHandle, textureId, texture);
    }

    @Override
    public int getGlTextureId(long texture) {
        return this.util.getGlTextureId(this.driverHandle, texture);
    }

    /**
     * Set which GLFW context should be active.
     *
     * @param window GLFW window handle
     */
    @Override
    public void setActiveWindow(long window) {
        this.util.setActiveWindow(this.driverHandle, window);
    }
}