Hey there, sep87x with another problem,

 

so for my (quiet huge) project I need to download image and place them in a cropped size (128x128) into a cache folder (located at .minecraft/sol-cache). After that, I need to render them to a GUI screen. As far as I know I can't use the ResourceLocation class because it only gets contents from the assets folder, but is it possible in some other way to retrieve the image from the cache with a ResourceLocation or do I need to do some "hardcore texture binding"?

 

... and no, I won't use slick-util.

 

Greets from Germany

~sep87x

 

Edit: okay, I will use the slick-util library if none of this works ... which would make me really sad.

So I kinda did something ... but it's not correct. I read through the whole thread and made the method fit my conditions. (That's the only example I found)

 

    private void bindBufferedImage(BufferedImage image) {
    	image = image.getSubimage((image.getWidth() - 128) / 2, (image.getHeight() - 128) / 2, 128, 128);
    	
    	int[] pixels = new int[image.getWidth() * image.getHeight()];
    	image.getRGB(0, 0, image.getWidth(), image.getHeight(), pixels, 0, image.getWidth());
    	
    	ByteBuffer buffer = BufferUtils.createByteBuffer(image.getWidth() * image.getHeight() * 4);
    	
    	for (int y = 0; y < image.getHeight(); y++) {
    		for (int x = 0; x < image.getWidth(); x++) {
    			int pixel = pixels[y * image.getWidth() + x];
    			buffer.put((byte)((pixel >> 16) & 0xFF));
    			buffer.put((byte)((pixel >>  & 0xFF));
    			buffer.put((byte)(pixel & 0xFF));
    			buffer.put((byte)((pixel >> 24) & 0xFF));
    		}
    	}
    	
    	buffer.flip();
    	
    	int textureID = GL11.glGenTextures();
    	GL11.glBindTexture(GL11.GL_TEXTURE_2D, textureID);
        
        //GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, image.getWidth(), image.getHeight(), 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, buffer);
    }

 

Now I want to draw the image, but only a white box shows up.

 

			        // fyi, the variable tag stores some information about a compound in a xml file. tag.tagType is an enum. the file name is correct. i verified that
		        try {
					bindBufferedImage(ImageIO.read(new File("pmcol-cache/tag_" + tag.tagType.getStringForTag().toLowerCase() + "_" + (showcaseIndex % 3) + ".jpg")));
					this.drawTexturedModalRect(0, 0, 0, 0, 256, 256);
				} catch (IOException e) {
					e.printStackTrace();
				}

 

IMO, there are only two possible causes. One: the integer array "pixels" is not fed with right information. Two: the format of the file is not correct. Can anyone help me? I've coded for several weeks now and don't want to get stuck on that tiny problem.

 

Edit: And yes I know ... a jpg doesn't have an alpha level ... me dumb. Ignore that.

Mad's wrote a tutorial of sorts which contains similar code to yours for "Loading Images from an External Folder"

maybe you could discover what's wrong by looking into his post?

http://www.minecraftforum.net/topic/1963245-162-mads-forge-modding-tutorials/

Ah okay. I forgot the following:

 

// Setup wrap mode
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL12.GL_CLAMP_TO_EDGE);
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, GL12.GL_CLAMP_TO_EDGE);

// Setup texture scaling filtering
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);

 

And I figured out that I'm able to save the images with PNG (+alpha) without any conversions, so anything went better than expected. Thanks a lot man