Beispiel #1
0
  private static TextureResource loadTexture(String fileName) {
    String[] splitArray = fileName.split("\\.");
    String ext = splitArray[splitArray.length - 1];

    try {
      BufferedImage image = ImageIO.read(new File("./res/textures/" + fileName));
      int[] pixels =
          image.getRGB(0, 0, image.getWidth(), image.getHeight(), null, 0, image.getWidth());

      ByteBuffer buffer = Util.createByteBuffer(image.getHeight() * image.getWidth() * 4);
      boolean hasAlpha = image.getColorModel().hasAlpha();

      for (int y = 0; y < image.getHeight(); y++) {
        for (int x = 0; x < image.getWidth(); x++) {
          int pixel = pixels[y * image.getWidth() + x];

          buffer.put((byte) ((pixel >> 16) & 0xFF));
          buffer.put((byte) ((pixel >> 8) & 0xFF));
          buffer.put((byte) ((pixel) & 0xFF));
          if (hasAlpha) buffer.put((byte) ((pixel >> 24) & 0xFF));
          else buffer.put((byte) (0xFF));
        }
      }

      buffer.flip();

      TextureResource resource = new TextureResource();
      glBindTexture(GL_TEXTURE_2D, resource.getId());

      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);

      glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
      glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

      glTexImage2D(
          GL_TEXTURE_2D,
          0,
          GL_RGBA8,
          image.getWidth(),
          image.getHeight(),
          0,
          GL_RGBA,
          GL_UNSIGNED_BYTE,
          buffer);

      return resource;
    } catch (Exception e) {
      e.printStackTrace();
      System.exit(1);
    }

    return null;
  }
Beispiel #2
0
  public void addVertices(Vertex[] vertices) {
    size = vertices.length;

    glBindBuffer(GL_ARRAY_BUFFER, vbo);
    glBufferData(GL_ARRAY_BUFFER, Util.createFlippedBuffer(vertices), GL_STATIC_DRAW);
  }