Method initialize

src/visualization/gl_text_renderer.cpp:43–64

}

bool GLTextRenderer::initialize() {
    if (!text_prog.create(shader::text_vert_shader,
                          shader::text_frag_shader,
                          ShaderProgram::TexelChannels::FormatR,
                          "rgba",
                          {"mvp",
                           "buff_sampler",
                           "text_sampler",
                           "pix_coord",
                           "brightness_contrast"})) {
        return false;
    }

    canvas_.glGenTextures(1, &text_tex);
    canvas_.glActiveTexture(GL_TEXTURE0);
    canvas_.glBindTexture(GL_TEXTURE_2D, text_tex);
    canvas_.glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
    canvas_.glGenBuffers(1, &text_vbo);
    upload_atlas();

    return true;
}

void GLTextRenderer::upload_atlas() {
    canvas_.glActiveTexture(GL_TEXTURE0);