Method allocate

core/src/processing/opengl/Texture.java:1135–1172

Allocates the opengl texture object.

()

   * Allocates the opengl texture object.
   */
  protected void allocate() {
    dispose(); // Just in the case this object is being re-allocated.

    boolean enabledTex = false;
    if (!pgl.texturingIsEnabled(glTarget)) {
      pgl.enableTexturing(glTarget);
      enabledTex = true;
    }

    context = pgl.getCurrentContext();
    glres = new GLResourceTexture(this);

    pgl.bindTexture(glTarget, glName);
    pgl.texParameteri(glTarget, PGL.TEXTURE_MIN_FILTER, glMinFilter);
    pgl.texParameteri(glTarget, PGL.TEXTURE_MAG_FILTER, glMagFilter);
    pgl.texParameteri(glTarget, PGL.TEXTURE_WRAP_S, glWrapS);
    pgl.texParameteri(glTarget, PGL.TEXTURE_WRAP_T, glWrapT);
    if (PGraphicsOpenGL.anisoSamplingSupported) {
      pgl.texParameterf(glTarget, PGL.TEXTURE_MAX_ANISOTROPY,
                        PGraphicsOpenGL.maxAnisoAmount);
    }

    // First, we use glTexImage2D to set the full size of the texture (glW/glH
    // might be diff from w/h in the case that the GPU doesn't support NPOT
    // textures)
    pgl.texImage2D(glTarget, 0, glFormat, glWidth, glHeight, 0,
                   PGL.RGBA, PGL.UNSIGNED_BYTE, null);

    // Makes sure that the texture buffer in video memory doesn't contain
    // any garbage.
    pgl.initTexture(glTarget, PGL.RGBA, width, height);

    pgl.bindTexture(glTarget, 0);
    if (enabledTex) {
      pgl.disableTexturing(glTarget);
    }
    bound = false;
  }


  /**