我正试图为一场网络游戏打一个简单的机器人,因此,我希望能够在屏幕上读一个星子的颜色。 我与GetPixel(GetPixel)一起在Windows上做了这项工作,但我似乎无法在SOS X上看到这一点。 我在网上看望,走过冰川。 当我在锡卡德成为一条简单的指挥线工具时,我提出了以下守则。 然而,我似乎不能让它发挥作用。 我不断发现EXC_BAD_ACCESS错误:
GLfloat r;
glReadPixels(0, 0, 1, 1, GL_RED, GL_FLOAT, &r);
我认为,上述法典将把钢材的红色价值(0,0)储存起来。 吴 Oh,我想避免采取 screen击的做法,因为这很缓慢。 任何帮助?
P.S. 有了指挥线工具,我的最终目标是制作双管或辅助器,因为我已经拥有可以点击屏幕的指挥线工具。
glReadPixels is only concern about Read a pixel from the framework.5/53/ (the area to which Yougrams card].
从“屏幕”中读取的颜料根本与开放式GL无关。 你们需要具体系统的职能。
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