我正在尝试使用LWJGL库在Eclipse中显示png作为纹理。我确保绑定纹理并在绘制顶点之前设置坐标,但图像仍然没有显示。可能是什么问题?
package javagame;
import static org.lwjgl.opengl.GL11.*;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import org.lwjgl.LWJGLException;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
import org.lwjgl.util.Color;
import org.newdawn.slick.opengl.Texture;
import org.newdawn.slick.opengl.TextureLoader;
import org.newdawn.slick.util.ResourceLoader;
@SuppressWarnings("unused")
public class ImageLWJGL {
public static Texture p;
public static void main(String[] args) {
createDisplay();
createGL();
render();
cleanUp();
}
private static void createDisplay(){
try {
Display.setDisplayMode(new DisplayMode(800,600));
Display.create();
Display.setVSyncEnabled(true);
} catch (LWJGLException e) {
e.printStackTrace();
}
}
public static void createGL(){
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, Display.getWidth(), 0, Display.getHeight(), -1, 1);
glMatrixMode(GL_MODELVIEW);
glClearColor(0,0,0,1);
glDisable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
}
private static void render(){
while(!Display.isCloseRequested()){
try {
p = TextureLoader.getTexture("PNG",
new FileInputStream(new File("res/wood.png")));
} catch (IOException e) {
e.printStackTrace();
}
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity();
glColor3f(0.25f,0.75f,0.5f);
p.bind();
glBegin(GL_QUADS);
glTexCoord2f(0,0);
glVertex2f(0,0); // (origin, origin)
glTexCoord2f(0,1);
glVertex2f(0,p.getHeight()); // (origin, y-axis)-height
glTexCoord2f(1,1);
glVertex2f(p.getWidth(),p.getHeight()); // (x-axis, y-axis)
glTexCoord2f(1,0);
glVertex2f(p.getWidth(),0); // (x-axis, origin)-width
glEnd();
Display.update();
}
}
private static void cleanUp(){
Display.destroy();
}
}
答案 0 :(得分:0)
您的问题是您的Ortho Projection Matrix。
glOrtho(0, Display.getWidth(), 0, Display.getHeight(), -1, 1);
它从0到显示宽度,0到显示高度,但是你将Quad从0渲染到1.所以你的Quad会被渲染,但是对于Small,你可以看到它。
解决问题将glOrtho改为:
glOrtho(0, 1, 0, 1, -1, 1);