Function shader_prg_create

leif.c:315–346

}

LfShader shader_prg_create(const char* vert_src, const char* frag_src) {
  // Creating vertex & fragment shader with the shader API
  uint32_t vertex_shader = shader_create(GL_VERTEX_SHADER, vert_src);
  uint32_t fragment_shader = shader_create(GL_FRAGMENT_SHADER, frag_src);

  // Creating & linking the shader program with OpenGL
  LfShader prg;
  prg.id = glCreateProgram();
  glAttachShader(prg.id, vertex_shader);
  glAttachShader(prg.id, fragment_shader);
  glLinkProgram(prg.id);

  // Check for linking errors
  int32_t linked;
  glGetProgramiv(prg.id, GL_LINK_STATUS, &linked);

  if(!linked) {
    LF_ERROR("Failed to link shader program.");
    char info[512];
    glGetProgramInfoLog(prg.id, 512, NULL, info);
    LF_INFO("%s", info);
    glDeleteShader(vertex_shader);
    glDeleteShader(fragment_shader);
    glDeleteProgram(prg.id);
    return prg;
  }

  // Delete the shaders after
  glDeleteShader(vertex_shader);
  glDeleteShader(fragment_shader);
  return prg;
}

void shader_set_mat(LfShader prg, const char* name, mat4 mat) {
  glUniformMatrix4fv(glGetUniformLocation(prg.id, name), 1, GL_FALSE, mat[0]);