/**
   * Sets a specified texture's OpenGL <code>Texture</code> parameters.
   *
   * @param dc the current draw context.
   * @param texture the texture whose parameters to set.
   */
  protected void setTextureParameters(DrawContext dc, Texture texture) {
    // Enable the appropriate mip-mapping texture filters if the caller has specified that
    // mip-mapping should be
    // enabled, and the texture itself supports mip-mapping.
    boolean useMipMapFilter =
        this.useMipMaps
            && (this.getTextureData().getMipmapData() != null
                || texture.isUsingAutoMipmapGeneration());

    GL gl = dc.getGL();
    gl.glTexParameteri(
        GL.GL_TEXTURE_2D,
        GL.GL_TEXTURE_MIN_FILTER,
        useMipMapFilter ? GL.GL_LINEAR_MIPMAP_LINEAR : GL.GL_LINEAR);
    gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
    gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP_TO_EDGE);
    gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP_TO_EDGE);

    if (this.isUseAnisotropy() && useMipMapFilter) {
      double maxAnisotropy = dc.getGLRuntimeCapabilities().getMaxTextureAnisotropy();
      if (dc.getGLRuntimeCapabilities().isUseAnisotropicTextureFilter() && maxAnisotropy >= 2.0) {
        gl.glTexParameterf(
            GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAX_ANISOTROPY_EXT, (float) maxAnisotropy);
      }
    }
  }
示例#2
0
  public void render3D(GL gl, GLDrawable glc) {
    if (pts2d.size() < 4) return;
    if (fill != null || texture != null) {
      if (texture == null) {
        setColor(gl, fill);
        gl.glDisable(GL.GL_TEXTURE_2D);
      } else {
        setColor(gl, Color.white);
        Texture gltexture = texture.getTexture(glc);
        gltexture.enable();
        gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, GL.GL_REPEAT);
        gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, GL.GL_REPEAT);
        gl.glTexEnvf(GL.GL_TEXTURE_ENV, GL.GL_TEXTURE_ENV_MODE, GL.GL_MODULATE);
        gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
        gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
        gltexture.bind();
      }
      gl.glPushMatrix();

      // get 4 control points of portal
      Point2D p0 = pts2d.get(0);
      Point2D p1 = pts2d.get(1);
      Point2D p2 = pts2d.get(2);
      Point2D p3 = pts2d.get(3);

      // render 1st side of portal with height extra[0]
      renderOneside(p0, p1, gl, extra[0]);

      // render 1st side of portal with height extra[1]
      renderOneside(p2, p3, gl, extra[1]);

      gl.glPopMatrix();
    }
  }