枚举成员
Max_Active_Texture_Count
Max_Active_Texture_Count
Max_AnisoLevel_Count
Max_AnisoLevel_Count
MAX_Texture_Image_Uint
MAX_Texture_Image_Uint
MAX_Texture_Size
MAX_Texture_Size
Max_Uniform_Count
Max_Uniform_Count
SHADER_CAPAILITY_LEVEL
SHADER_CAPAILITY_LEVEL
UNSIGNED_BYTE
UNSIGNED_BYTE
UNSIGNED_SHORT
UNSIGNED_SHORT