Example usage for org.lwjgl.opengl GL13 glActiveTexture

List of usage examples for org.lwjgl.opengl GL13 glActiveTexture

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Introduction

In this page you can find the example usage for org.lwjgl.opengl GL13 glActiveTexture.

Prototype

public static void glActiveTexture(@NativeType("GLenum") int texture)

Source Link

Document

Selects which texture unit subsequent texture state calls will affect.

Usage

From source file:com.voxelplugineering.voxelsniper.util.TextureUtilities.java

License:Open Source License

public static int loadPNGTexture(File file, int textureUnit) {
    ByteBuffer buf = null;/*  w w  w . j a va  2  s  .co  m*/
    int tWidth = 0;
    int tHeight = 0;

    try {
        BufferedImage image = ImageIO.read(file);
        tWidth = image.getWidth();
        tHeight = image.getHeight();
        buf = imageToRGBABuffer(image);
    } catch (IOException e) {
        e.printStackTrace();
        if (file.getName().endsWith("debug.png")) {
            System.exit(-1);
        } else {
            return debugTexture;
        }
    }

    // Create a new texture object in memory and bind it
    int texId = GL11.glGenTextures();
    GL13.glActiveTexture(textureUnit);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, texId);

    // All RGB bytes are aligned to each other and each component is 1 byte
    GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);

    // Upload the texture data and generate mip maps (for scaling)
    GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGB, tWidth, tHeight, 0, GL11.GL_RGBA,
            GL11.GL_UNSIGNED_BYTE, buf);
    GL30.glGenerateMipmap(GL11.GL_TEXTURE_2D);

    // Setup the ST coordinate system
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL11.GL_REPEAT);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, GL11.GL_REPEAT);

    // Setup what to do when the texture has to be scaled
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST_MIPMAP_NEAREST);

    OpenGLUtilities.checkGLError("loadPNGTexture");
    if (file.getName().endsWith("debug.png")) {
        debugTexture = texId;
    }
    return texId;
}

From source file:com.w67clement.openw67render.utils.Texture.java

License:Open Source License

/**
 * Binds the texture.
 */
public void bind() {
    GL13.glActiveTexture(id);
    glBindTexture(GL_TEXTURE_2D, id);
}

From source file:com.xrbpowered.gl.examples.GLLife.java

License:Open Source License

private void resetBuffers(boolean fill) {
    if (buffers[0] != null)
        buffers[0].destroy();/* w w w  . ja va  2s  .  c o  m*/
    if (buffers[1] != null)
        buffers[1].destroy();

    int width = getTargetWidth();
    int height = getTargetHeight();
    buffers[0] = new OffscreenBuffers(width, height, false);
    buffers[1] = new OffscreenBuffers(width, height, false);
    targetBuffer = 1;
    turn = 0;

    IntBuffer intBuffer = ByteBuffer.allocateDirect(4 * width * height).order(ByteOrder.nativeOrder())
            .asIntBuffer();
    int[] pixels = new int[width * height];
    for (int x = 1; x < width; x++)
        for (int y = 1; y < height; y++) {
            int v = fill && random.nextInt(27) == 0 ? 0xffffffff : 0xff000000;
            pixels[y * width + x] = v;
        }
    intBuffer.put(pixels);
    intBuffer.flip();

    GL13.glActiveTexture(GL13.GL_TEXTURE0);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, buffers[0].getColorTexId());
    GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
    GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA, width, height, 0, GL12.GL_BGRA,
            GL12.GL_UNSIGNED_INT_8_8_8_8_REV, intBuffer);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, buffers[1].getColorTexId());
    GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
    GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA, width, height, 0, GL12.GL_BGRA,
            GL12.GL_UNSIGNED_INT_8_8_8_8_REV, intBuffer);
}

From source file:com.xrbpowered.gl.examples.GLLife.java

License:Open Source License

private void addGlider(int x, int y, int width, int height, int[] pixels) {
    IntBuffer intBuffer = ByteBuffer.allocateDirect(4 * width * height).order(ByteOrder.nativeOrder())
            .asIntBuffer();/*from  ww  w.ja  v  a  2s  .  c o m*/
    intBuffer.put(pixels);
    intBuffer.flip();

    GL13.glActiveTexture(GL13.GL_TEXTURE0);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, buffers[1 - targetBuffer].getColorTexId());
    GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
    GL11.glTexSubImage2D(GL11.GL_TEXTURE_2D, 0, x, y, width, height, GL12.GL_BGRA,
            GL12.GL_UNSIGNED_INT_8_8_8_8_REV, intBuffer);
}

From source file:com.xrbpowered.gl.res.buffers.OffscreenBuffers.java

License:Open Source License

public void bindColorBuffer(int index) {
    GL13.glActiveTexture(GL13.GL_TEXTURE0 + index);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, colorTexId);
}

From source file:com.xrbpowered.gl.res.buffers.OffscreenBuffers.java

License:Open Source License

public void bindDepthBuffer(int index) {
    if (depthTexId > 0) {
        GL13.glActiveTexture(GL13.GL_TEXTURE0 + index);
        GL11.glBindTexture(GL11.GL_TEXTURE_2D, depthTexId);
    }/*  ww w .j  ava 2  s.c  o  m*/
}

From source file:com.xrbpowered.gl.res.SkyBox.java

License:Open Source License

public void draw() {
    shader.use();
    GL13.glActiveTexture(GL13.GL_TEXTURE0);
    GL11.glBindTexture(GL13.GL_TEXTURE_CUBE_MAP, texture.getId());
    cube.draw();
    shader.unuse();
}

From source file:com.xrbpowered.gl.res.textures.ArrayTexture.java

License:Open Source License

public ArrayTexture(int w, int h, int layers) {
    this.width = w;
    this.height = h;
    this.layers = layers;

    texId = GL11.glGenTextures();//  www.  j ava2s.c  om
    GL13.glActiveTexture(GL13.GL_TEXTURE0);
    GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, texId);
    intBuffer = ByteBuffer.allocateDirect(4 * w * h * layers).order(ByteOrder.nativeOrder()).asIntBuffer();
}

From source file:com.xrbpowered.gl.res.textures.ArrayTexture.java

License:Open Source License

public void bind(int index) {
    GL13.glActiveTexture(GL13.GL_TEXTURE0 + index);
    GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, texId);
}

From source file:com.xrbpowered.gl.res.textures.BufferTexture.java

License:Open Source License

public void update() {
    if (this.imgBuffer == null)
        createBuffers();//from   www  . ja  va 2 s .c  o m

    if (updateBuffer((Graphics2D) imgBuffer.getGraphics(), width, height)) {
        pixels = imgBuffer.getRGB(0, 0, width, height, pixels, 0, width);
        intBuffer.put(pixels);
        intBuffer.flip();

        GL13.glActiveTexture(GL13.GL_TEXTURE0);
        GL11.glBindTexture(GL11.GL_TEXTURE_2D, getId());

        GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
        GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA, width, height, 0, GL12.GL_BGRA,
                GL12.GL_UNSIGNED_INT_8_8_8_8_REV, intBuffer);
        //         GL30.glGenerateMipmap(GL11.GL_TEXTURE_2D); // TODO needless mipmaps?
    }

    if (!staticBuffers)
        destroyBuffers();
}