misc.txt

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JOGL Texture Konstruktor Texture(TextureData data) {
    // data enthält die Pixeldaten (2D -- Texture ist offenbar für 1D-
    // oder 2D-Texturen gedacht?). In diesem Beispiel: data enthalte
    // unkomprimierte 16Bit-2D-Texturdaten sowie
    // data.getMipmap()==false (=> keine Mipmap-Erzeugung)

    int[] tmp = new int[1];
    gl.glGenTextures(1, tmp, 0);
    int texId = tmp[0];

    //updateImage
    gl.glBindTexture(GL.GL_TEXTURE_2D, texID);
    
    gl.glTexImage2D(GL.GL_TEXTURE_2D, 0, data.getInternalFormat(),
                    texWidth, texHeight, data.getBorder(),
                    data.getPixelFormat(), data.getPixelType(), null);

    //updateSubImageImpl
    int[] align = { 0 };
    int[] rowLength = { 0 };
    int[] skipRows = { 0 };
    int[] skipPixels = { 0 };
    gl.glGetIntegerv(GL.GL_UNPACK_ALIGNMENT,   align,      0); // save alignment
    gl.glGetIntegerv(GL2.GL_UNPACK_ROW_LENGTH,  rowLength,  0); // save row length
    gl.glGetIntegerv(GL2.GL_UNPACK_SKIP_ROWS,   skipRows,   0); // save skipped rows
    gl.glGetIntegerv(GL2.GL_UNPACK_SKIP_PIXELS, skipPixels, 0); // save skipped pixels
    gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, data.getAlignment());
    gl.glPixelStorei(GL2.GL_UNPACK_ROW_LENGTH, rowlen);
    gl.glPixelStorei(GL2.GL_UNPACK_SKIP_ROWS, srcy);
    gl.glPixelStorei(GL2.GL_UNPACK_SKIP_PIXELS, srcx);

    gl.glTexSubImage2D(GL.GL_TEXTURE_2D, //target
                       0,  //level
                       0,  //xoffset
                       0,  //yoffset
                       data.getWidth(),
                       data.getHeight(),
                       data.getPixelFormat(),
                       data.getPixelType(),
                       buffer);
    gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT,   align[0]);      // restore alignment
    gl.glPixelStorei(GL2.GL_UNPACK_ROW_LENGTH,  rowLength[0]);  // restore row length
    gl.glPixelStorei(GL2.GL_UNPACK_SKIP_ROWS,   skipRows[0]);   // restore skipped rows
    gl.glPixelStorei(GL2.GL_UNPACK_SKIP_PIXELS, skipPixels[0]); // restore skipped pixels
    

    gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR);
    gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
    int wrapMode = (gl.isExtensionAvailable("GL_VERSION_1_2") || !gl.isGL2()) ? GL.GL_CLAMP_TO_EDGE : GL2.GL_CLAMP;
    gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, wrapMode);
    gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, wrapMode);

}


public void bind() throws GLException {
    GLContext.getCurrentGL().glBindTexture(GL.GL_TEXTURE_2D, texID); 
}
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