com.google.gapid.glviewer.gl.Texture.java Source code

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Here is the source code for com.google.gapid.glviewer.gl.Texture.java

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/*
 * Copyright (C) 2017 Google Inc.
 *
 * 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.google.gapid.glviewer.gl;

import org.eclipse.swt.graphics.Color;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL13;
import org.lwjgl.opengl.GL33;

import java.nio.ByteBuffer;

/**
 * An OpenGL texture.
 */
public class Texture extends GlObject {
    private final int target;
    private final int handle;

    Texture(Renderer owner, int target) {
        super(owner);
        this.target = target;
        this.handle = GL11.glGenTextures();
        owner.register(this);
    }

    public Texture setMinMagFilter(int min, int mag) {
        bind();
        GL11.glTexParameteri(target, GL11.GL_TEXTURE_MIN_FILTER, min);
        GL11.glTexParameteri(target, GL11.GL_TEXTURE_MAG_FILTER, mag);
        return this;
    }

    public Texture setBorderColor(Color color) {
        bind();
        GL11.glTexParameterfv(target, GL11.GL_TEXTURE_BORDER_COLOR, new float[] { color.getRed() / 255.f,
                color.getGreen() / 255.f, color.getBlue() / 255.f, color.getAlpha() / 255.f, });
        return this;
    }

    public Texture setWrapMode(int wrapS, int wrapT) {
        bind();
        GL11.glTexParameteri(target, GL11.GL_TEXTURE_WRAP_S, wrapS);
        GL11.glTexParameteri(target, GL11.GL_TEXTURE_WRAP_T, wrapT);
        return this;
    }

    public Texture setSwizzle(int r, int g, int b, int a) {
        bind();
        GL11.glTexParameteriv(target, GL33.GL_TEXTURE_SWIZZLE_RGBA, new int[] { r, g, b, a });
        return this;
    }

    public Texture loadData(int width, int height, int internalFormat, int format, int type, ByteBuffer data) {
        bind();
        GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
        GL11.glTexImage2D(target, 0, internalFormat, width, height, 0, format, type, data);
        return this;
    }

    static void activate(int unit) {
        GL13.glActiveTexture(GL13.GL_TEXTURE0 + unit);
    }

    void bind() {
        GL11.glBindTexture(target, handle);
    }

    @Override
    protected void release() {
        GL11.glDeleteTextures(handle);
    }
}