Slick Forums

Hi,

First things sorry for the few english mistakes i'm about to make, english isn't my motherlangage.

Here's my question, before using java i was programming in C++ (i was using SFML for 2d graphics). With SFML it was quite easy to modify an image because an image and the thing use to draw an Image on the screen were two totaly different things. I've been searching in the Slick documentation a way to modify an image but the only way i find was using a ImageBuffer and then make getImage() on it, but this isn't fast enough for me, so i ask you: is there a way to make fast modifications on images?

Thanks for your answers

Generally in slick you would do it like so:


Some considerations:

• Calling getGraphics will create a new OpenGL texture. For better memory management, you should release the old texture if you no longer need it (i.e. if the modifications are intended to be permanent):
  
  Code:
  Texture oldTex = myImage.getTexture();
  Graphics g = myImage.getGraphics(); //myImage will now have a new texture
  // ... modify image .. //
  g.flush();
  oldTex.release(); //releases the old texture that we no longer need
• If you need modifications on a per-pixel basis, you can use ImageBuffer. If you need something faster, you can implement your own image modification code that uses glTexSubImage2D. For something even faster, you might want to look into shaders.

What kind of modifications are you trying to do?

I'm trying to blend two texture, for a better transition between them.