C++ (Cpp) GlTexture::empty Beispiele

Beispiel #1

Datei: opengl_interop.cpp Projekt: 2693/opencv

void cv::render(const GlTexture& tex, Rect_<double> wndRect, Rect_<double> texRect)
{
#ifndef HAVE_OPENGL
    (void)tex;
    (void)wndRect;
    (void)texRect;
    throw_nogl;
#else
    if (!tex.empty())
    {
        tex.bind();

        glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);

        glBegin(GL_QUADS);
            glTexCoord2d(texRect.x, texRect.y);
            glVertex2d(wndRect.x, wndRect.y);

            glTexCoord2d(texRect.x, texRect.y + texRect.height);
            glVertex2d(wndRect.x, (wndRect.y + wndRect.height));

            glTexCoord2d(texRect.x + texRect.width, texRect.y + texRect.height);
            glVertex2d(wndRect.x + wndRect.width, (wndRect.y + wndRect.height));

            glTexCoord2d(texRect.x + texRect.width, texRect.y);
            glVertex2d(wndRect.x + wndRect.width, wndRect.y);
        glEnd();

        CV_CheckGlError();

        tex.unbind();
    }
#endif
}