我一直在尝试用 lwjgl 编写游戏引擎,但遇到了渲染问题,我需要一些帮助。基本上,我遵循了 lwjgl-basics(GitHub 上的 mattdesl)中的一些步骤,并在我的渲染器中生成了一个 Texture 类和一个部分,除了它们不渲染纹理之外,它们都可以工作。这是代码...
public void drawTexturedRectangle(float x1, float y1, float w, float h, Texture t){
t.bind();
GL11.glColor4f(1.0f, 0, 1.0f, 1.0f);
GL11.glBegin(GL11.GL_QUADS);
GL11.glTexCoord2f(0, 0);
GL11.glVertex2f(x1, y1);
GL11.glTexCoord2f(1.0f, 0);
GL11.glVertex2f(x1 + w, y1);
GL11.glTexCoord2f(1.0f, 1.0f);
GL11.glVertex2f(x1 + w, y1 + h);
GL11.glTexCoord2f(0, 1.0f);
GL11.glVertex2f(x1, y1 + h);
GL11.glEnd();
}
这就是它呈现的地方。这是纹理类:
package com.nightfall.morningside;
import java.io.*;
import java.net.URL;
import java.nio.ByteBuffer;
import de.matthiasmann.twl.utils.*;
import org.lwjgl.opengl.*;
import org.lwjgl.opengl.GL12.*;
import org.lwjgl.BufferUtils;
public class Texture {
public int width;
public int height;
public int id;
public Texture(URL pathToTexture){
try {
InputStream pngstream = pathToTexture.openStream();
PNGDecoder pngdecoder = new PNGDecoder(pngstream);
width = pngdecoder.getWidth();
height = pngdecoder.getHeight();
int bpp = 4;
ByteBuffer buffer = BufferUtils.createByteBuffer(bpp * width * height);
pngdecoder.decode(buffer, width * bpp, PNGDecoder.Format.RGBA);
buffer.flip();
id = GL11.glGenTextures();
GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
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);
GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA, width, height, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, buffer);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void bind(){
GL11.glBindTexture(GL11.GL_TEXTURE_2D, id);
}
}
TexturedRectangle 类:
package com.nightfall.morningside.geometry;
import com.nightfall.morningside.Texture;
import com.nightfall.morningside.Textured;
public class TexturedRectangle extends Rectangle implements Textured{
public Texture texture;
public TexturedRectangle(float xone, float yone, float w, float h, Texture t) {
super(xone, yone, w, h);
texture = t;
}
public Texture getTexture() {
return texture;
}
}
矩形类:
package com.nightfall.morningside.geometry;
public class Rectangle {
private float x1;
private float y1;
private float width;
private float height;
public Rectangle(float xone, float yone, float w, float h){
x1 = xone;
y1 = yone;
width = w;
height = h;
}
public float getX1(){
return x1;
}
public float getY1(){
return y1;
}
public float getHeight(){
return height;
}
public float getWidth(){
return width;
}
public Point getLocation(){
return new Point(x1, y1);
}
}
和纹理界面:
package com.nightfall.morningside;
public interface Textured {
public Texture getTexture();
}
和 Point 类:
package com.nightfall.morningside.geometry;
public class Point {
private float x1;
private float y1;
public Point(float x, float y){
x1 = x;
y1 = y;
}
public float getX(){
return x1;
}
public float getY(){
return y1;
}
}
我希望这就是一切。我相信这是我渲染方式的一个问题,但我加载纹理的位置可能存在问题。如果你还需要什么,我会为你准备的。谢谢。