LWJGL Forum

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.

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