- int position_attrib = glGetAttribLocation(glsl_program_num, "position");
- assert(position_attrib != -1);
- int texcoord_attrib = glGetAttribLocation(glsl_program_num, "texcoord");
- assert(texcoord_attrib != -1);
- glEnableVertexAttribArray(position_attrib);
- check_error();
- glVertexAttribPointer(position_attrib, 2, GL_FLOAT, GL_FALSE, 0, vertices);
- check_error();
- glEnableVertexAttribArray(texcoord_attrib);