LWJGL Forum

My program seems to be forgetting my previous textures, and replacing all of them with the last texture that I loaded.

In the following I load two textures, and put them at different parts of the screen. But they both look like "grass.png"

import org.lwjgl.*;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
import org.newdawn.slick.opengl.Texture;
import org.newdawn.slick.opengl.TextureLoader;
import org.newdawn.slick.util.ResourceLoader;

public class lwjglTest {

Texture texture;
Texture texture2;

public static void main(String[] args)
{
new lwjglTest();
}

lwjglTest()
{
try
{
Display.setDisplayMode(new DisplayMode(800,600));
Display.create();
}
catch(Exception e)
{
e.printStackTrace();
System.exit(0);
}

GL11.glEnable(GL11.GL_TEXTURE_2D);
GL11.glClearColor(0.0f, 0.5f, 0.5f, 2.0f);
GL11.glEnable(GL11.GL_BLEND);
GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
GL11.glViewport(0,0,Display.getWidth(),Display.getHeight());
GL11.glMatrixMode(GL11.GL_MODELVIEW);

GL11.glMatrixMode(GL11.GL_PROJECTION);
GL11.glLoadIdentity();
GL11.glOrtho(0, Display.getWidth(), Display.getHeight(), 0, 1, -1);
GL11.glMatrixMode(GL11.GL_MODELVIEW);

try
{
texture = TextureLoader.getTexture("PNG",ResourceLoader.getResourceAsStream("mesh.png"));
texture2 = TextureLoader.getTexture("PNG",ResourceLoader.getResourceAsStream("grass.png"));
}
catch(Exception e)
{
e.printStackTrace();
}

while(!Display.isCloseRequested())
{
GL11.glBindTexture(GL11.GL_TEXTURE,texture.getTextureID());

GL11.glBegin(GL11.GL_POLYGON);
GL11.glTexCoord2f(0,0);
GL11.glVertex2f(10,10);
GL11.glTexCoord2f(1,0);
GL11.glVertex2f(10+texture.getTextureWidth(),10);
GL11.glTexCoord2f(1,1);
GL11.glVertex2f(10+texture.getTextureWidth(),10+texture.getTextureHeight());
GL11.glTexCoord2f(0,1);
GL11.glVertex2f(10,10+texture.getTextureHeight());
GL11.glEnd();


GL11.glBindTexture(GL11.GL_TEXTURE,texture2.getTextureID());

GL11.glBegin(GL11.GL_POLYGON);
GL11.glTexCoord2f(0,0);
GL11.glVertex2f(100,100);
GL11.glTexCoord2f(1,0);
GL11.glVertex2f(100+texture2.getTextureWidth(),100);
GL11.glTexCoord2f(1,1);
GL11.glVertex2f(100+texture2.getTextureWidth(),100+texture2.getTextureHeight());
GL11.glTexCoord2f(0,1);
GL11.glVertex2f(100,100+texture2.getTextureHeight());
GL11.glEnd();

Display.update();
}

Display.destroy();
}

}[/size]

You need to specify the correct target when binding a texture: GL_TEXTURE_2D. You should also not rely on [0 - 1] texcoords as Slick pads for non-power-of-two, see here:
http://slick.javaunlimited.net/viewtopic.php?p=25911#p25911

Or you could replace your calls to GL11.glBindTexture() with a call to texture.bind() and texture2.bind().