我尝试了很多不同的东西,但到目前为止没有任何效果。起初,问题是程序运行时只有一个空白屏幕。我终于让它显示一个空白的白色方块。我的图像是128x128,另一个是512x512。
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.FileNotFoundException;
import org.lwjgl.LWJGLException;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
import org.newdawn.slick.Color;
import org.newdawn.slick.opengl.Texture;
import org.newdawn.slick.opengl.TextureLoader;
import org.newdawn.slick.util.ResourceLoader;
import org.lwjgl.input.Mouse;
import java.util.Random;
public class TextureDemo
{
private static Texture wood;
Random random = new Random();
public TextureDemo()
{
initGL(640, 480, "SLICK TEXTURES");
loadTexture("mozilla");
int x = 100, y = 100, count = 0, width = 0, height = 0, counter = 10;
while(true)
{
count++;
if(count == counter)
{
x--; y--; width++; height++; counter += random.nextInt(50) + 1;
}
render(x, y, width, height);
Display.update();
Display.sync(60);
if(Display.isCloseRequested())
{
wood.release();
Display.destroy();
System.exit(0);
}
}
}
private void initGL(int width, int height, String title)
{
try
{
Display.setDisplayMode(new DisplayMode(width, height));
Display.setTitle(title);
Display.create();
}
catch(LWJGLException e)
{
e.printStackTrace();
Display.destroy();
System.exit(1);
}
GL11.glEnable(GL11.GL_TEXTURE);
GL11.glMatrixMode(GL11.GL_PROJECTION);
GL11.glLoadIdentity();
GL11.glOrtho(0, width, 0, height, 1, -1);
GL11.glMatrixMode(GL11.GL_MODELVIEW);
}
public void loadTexture(String key)
{
try
{
wood = TextureLoader.getTexture("PNG", ResourceLoader.getResourceAsStream("./res/images/"+key+".png"));
System.out.println("working." + wood.getTextureID());
}
catch(FileNotFoundException e)
{
e.printStackTrace();
Display.destroy();
System.exit(1);
}
catch(IOException e)
{
e.printStackTrace();
}
}
public void render(int x, int y, int width, int height)
{
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
System.out.println("working." + wood.getTextureID());
GL11.glBegin(GL11.GL_QUADS);
GL11.glBindTexture(GL11.GL_TEXTURE_2D, wood.getTextureID());
GL11.glTexCoord2f(1, 1);
GL11.glVertex2f(x, y);
GL11.glTexCoord2f(0, 1);
GL11.glVertex2f(x + wood.getImageWidth(), y);
GL11.glTexCoord2f(0, 0);
GL11.glVertex2f(x + wood.getImageWidth(), y + wood.getImageHeight());
GL11.glTexCoord2f(1, 0);
GL11.glVertex2f(x, y + wood.getImageHeight());
GL11.glEnd();
System.out.println(wood.getHeight()+ " " +wood.getWidth());
}
public static void main (String[] args)
{
new TextureDemo();
}
}
我只是希望能够看到我在程序中的png。为什么我会得到白色图像? initGL方法的顺序有多重要?
答案 0 :(得分:1)
不确定,但我认为你不得不在这个旧的不赞成的OpenGL风格中glEnable(GL_TEXTURE_2D);
。 (而不是GL_TEXTURE)
更新:我认为您应该glEnable(GL_TEXTURE_2D);
。尝试使用灰色清晰的颜色。也许他们只是变成黑色方块而不是白色。
Slick有一个绑定纹理的功能(我不确定getTextureID返回的内容)。
更新:确保先glBindTexture
,然后glBegin
。
答案 1 :(得分:0)
我认为你的纹理错误。尝试替换为:
GL11.glTexCoord2f(0, 0);
GL11.glVertex2f(x, y);
GL11.glTexCoord2f(1, 0);
GL11.glVertex2f(x + wood.getImageWidth(), y);
GL11.glTexCoord2f(1, 1);
GL11.glVertex2f(x + wood.getImageWidth(), y + wood.getImageHeight());
GL11.glTexCoord2f(0, 1);
GL11.glVertex2f(x, y + wood.getImageHeight());