openGL之API学习（二一一）glColor遇上纹理

hankern

于 2022-02-27 06:52:13 发布

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分类专栏： openGL之API学习文章标签：学习 cocos2d 游戏引擎

本文链接：https://blog.youkuaiyun.com/hankern/article/details/123159505

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每一个像素点的颜色与glColor进行比较，最终取较小值

原图

glColor4f(1.0,0.0,0.0,1.0)时

glColor4f(0.0,0.0,0.0,1.0)时，

glColor4f(0.0,0.0,0.0,0.0);

renderInfor.getState()->setActiveTextureUnit(1);
static GLuint disp_tex_id=0;
if(disp_tex_id<=0){
    glGenTextures(1, &disp_tex_id);
}


glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, disp_tex_id);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, G

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