How do I do transparent textures and blending? Slick-util

[doctorpunk]

At the moment I've got good quads drawing with textures using Slick-util. Pretty much:

texture = TextureLoader.getTexture("PNG", new FileInputStream("res/image.png"));
texture.bind();

This works great for the flat surfaces but when I attempt to implement a tutorial perhaps like.

http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=08 (at the bottom it has an old LWJGL port)

I become completely unstuck.. It uses the old devIL bindings and I cant figure out how to port them to slick, or ditch slick in favor of doing it without either.

private int[] loadTexture(String path) {
        IntBuffer image = ByteBuffer.allocateDirect(4).order(ByteOrder.nativeOrder()).asIntBuffer();
        IL.ilGenImages(1, image);
        IL.ilBindImage(image.get(0));
        IL.ilLoadImage(path);
        IL.ilConvertImage(IL.IL_RGB, IL.IL_BYTE);
        ByteBuffer scratch = ByteBuffer.allocateDirect(IL.ilGetInteger(IL.IL_IMAGE_WIDTH) * IL.ilGetInteger(IL.IL_IMAGE_HEIGHT) * 3);
        IL.ilCopyPixels(0, 0, 0, IL.ilGetInteger(IL.IL_IMAGE_WIDTH), IL.ilGetInteger(IL.IL_IMAGE_HEIGHT), 1, IL.IL_RGB, IL.IL_BYTE, scratch);

        // Create A IntBuffer For Image Address In Memory
        IntBuffer buf = ByteBuffer.allocateDirect(12).order(ByteOrder.nativeOrder()).asIntBuffer();
        GL11.glGenTextures(buf); // Create Texture In OpenGL

        GL11.glBindTexture(GL11.GL_TEXTURE_2D, buf.get(0));
        // Typical Texture Generation Using Data From The Image

        // Create Nearest Filtered Texture
        GL11.glBindTexture(GL11.GL_TEXTURE_2D, buf.get(0));
        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);
        GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGB, IL.ilGetInteger(IL.IL_IMAGE_WIDTH), 
                IL.ilGetInteger(IL.IL_IMAGE_HEIGHT), 0, GL11.GL_RGB, GL11.GL_UNSIGNED_BYTE, scratch);

        // Create Linear Filtered Texture
        GL11.glBindTexture(GL11.GL_TEXTURE_2D, buf.get(1));
        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
        GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGB, IL.ilGetInteger(IL.IL_IMAGE_WIDTH), 
                IL.ilGetInteger(IL.IL_IMAGE_HEIGHT), 0, GL11.GL_RGB, GL11.GL_UNSIGNED_BYTE, scratch);

        // Create MipMapped Texture
        GL11.glBindTexture(GL11.GL_TEXTURE_2D, buf.get(2));
        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR_MIPMAP_NEAREST);
        GLU.gluBuild2DMipmaps(GL11.GL_TEXTURE_2D, 3, IL.ilGetInteger(IL.IL_IMAGE_WIDTH), 
                IL.ilGetInteger(IL.IL_IMAGE_HEIGHT), GL11.GL_RGB, GL11.GL_UNSIGNED_BYTE, scratch);

      return new int[]{ buf.get(0), buf.get(1), buf.get(2) };     // Return Image Addresses In Memory

If that portion of code could be made to work without any IL functions the whole tutorial would work.

[DarkEdge]

The method you used still works in that tutorial. I just tested it myself You can disregard that entire method and just use "texture = TextureLoader.getTexture(...)".

However, those are still flat surfaces :p