glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, metallicRoughness->texId);
glUniform1i(glGetUniformLocation(progId, "mat.hasMetallicRoughness"), 1);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, metallicRoughness->texId);
glUniform1i(glGetUniformLocation(progId, "mat.hasMetallicRoughness"), 1);