98 lines
2.7 KiB
Java
98 lines
2.7 KiB
Java
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package com.gnarly.engine.texture;
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import static org.lwjgl.opengl.GL11.GL_CLAMP;
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import static org.lwjgl.opengl.GL11.GL_NEAREST;
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import static org.lwjgl.opengl.GL11.GL_RGBA;
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import static org.lwjgl.opengl.GL11.GL_TEXTURE_2D;
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import static org.lwjgl.opengl.GL11.GL_TEXTURE_MAG_FILTER;
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import static org.lwjgl.opengl.GL11.GL_TEXTURE_MIN_FILTER;
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import static org.lwjgl.opengl.GL11.GL_TEXTURE_WRAP_S;
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import static org.lwjgl.opengl.GL11.GL_TEXTURE_WRAP_T;
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import static org.lwjgl.opengl.GL11.GL_UNSIGNED_BYTE;
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import static org.lwjgl.opengl.GL11.glBindTexture;
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import static org.lwjgl.opengl.GL11.glDeleteTextures;
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import static org.lwjgl.opengl.GL11.glGenTextures;
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import static org.lwjgl.opengl.GL11.glTexImage2D;
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import static org.lwjgl.opengl.GL11.glTexParameterf;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import javax.imageio.ImageIO;
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import org.lwjgl.BufferUtils;
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import com.gnarly.engine.display.Window;
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public class Texture {
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protected int id, width, height;
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public Texture(String name) {
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BufferedImage bi = null;
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try {
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bi = ImageIO.read(new File("res/img/" + Window.resolution + "/" + name));
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} catch (IOException e) {
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try {
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bi = ImageIO.read(new File("res/img/const/" + name));
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} catch (IOException ex) {
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e.printStackTrace();
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}
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}
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if (bi != null) {
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width = bi.getWidth();
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height = bi.getHeight();
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int[] pixels = bi.getRGB(0, 0, width, height, null, 0, width);
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ByteBuffer buffer = BufferUtils.createByteBuffer(width * height * 4);
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for (int i = 0; i < height; i++) {
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for (int j = 0; j < width; j++) {
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int pixel = pixels[i * width + j];
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buffer.put((byte)((pixel >> 16) & 0xFF)); // Red
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buffer.put((byte)((pixel >> 8) & 0xFF)); // Green
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buffer.put((byte)((pixel ) & 0xFF)); // Blue
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buffer.put((byte)((pixel >> 24) & 0xFF)); // Alpha
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}
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}
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buffer.flip();
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id = glGenTextures();
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bind();
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
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unbind();
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}
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}
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public Texture(int id, int width, int height) {
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this.id = id;
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this.width = width;
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this.height = height;
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}
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public int getWidth() {
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return width;
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}
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public int getHeight() {
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return height;
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}
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public void bind() {
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glBindTexture(GL_TEXTURE_2D, id);
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}
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public void unbind() {
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glBindTexture(GL_TEXTURE_2D, 0);
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}
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public void destroy() {
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glDeleteTextures(id);
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}
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}
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