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Specification.",{"type":7,"children":8,"toc":5241},"root",[9,17,22,29,34,79,100,106,111,166,186,201,234,249,256,269,318,348,392,412,441,457,465,470,483,490,515,521,531,537,554,560,570,584,590,612,667,691,697,741,751,756,760,783,793,823,851,887,897,901,919,1110,1128,1137,1174,1226,1269,1279,1627,1633,1650,1668,1674,1679,1704,1722,1744,1789,1795,1805,1818,1829,1839,1848,1857,1866,1892,1933,1960,1983,1995,2001,2020,2032,2038,2056,2099,2132,2160,2178,2216,2254,2303,2325,2331,2348,2363,2371,2420,2438,2470,2475,2519,2534,2555,2561,2565,2575,2613,2643,2648,2653,2668,2681,2693,2699,2709,2724,2739,2745,2765,2772,2782,2805,2854,2860,2877,2890,2896,2930,2948,2954,2964,3144,3175,3185,3201,3217,3248,3254,3263,3272,3278,3311,3317,3408,3425,3443,3468,3491,3503,3513,3521,3527,3532,3537,3543,3575,3600,3623,3665,3671,3711,3750,3763,3772,3778,3795,3807,3812,3817,3828,3833,3857,3886,3891,3909,3915,3920,3926,3946,3952,3970,3976,3993,3999,4014,4024,4030,4055,4075,4080,4086,4091,4400,4405,4771,4789,4809,4815,4820,4834,4860,4865,4878,4908,4913,4918,4923,4946,5022,5056,5062,5086,5092,5097,5106,5115,5121,5126,5135,5144,5150,5159,5165,5179,5185,5205],{"type":10,"tag":11,"props":12,"children":14},"element","h1",{"id":13},"fundamentals",[15],{"type":16,"value":4},"text",{"type":10,"tag":18,"props":19,"children":20},"p",{},[21],{"type":16,"value":5},{"type":10,"tag":23,"props":24,"children":26},"h2",{"id":25},"fundamentals-host-environment",[27],{"type":16,"value":28},"Host 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",{"type":10,"tag":45,"props":95,"children":97},{"type":96},"should",[],{"type":16,"value":99}," be able\nto access such data efficiently in both paths in order to facilitate writing\nportable and performant applications.",{"type":10,"tag":23,"props":101,"children":103},{"id":102},"fundamentals-execmodel",[104],{"type":16,"value":105},"Execution Model",{"type":10,"tag":18,"props":107,"children":108},{},[109],{"type":16,"value":110},"This section outlines the execution model of a Vulkan system.",{"type":10,"tag":18,"props":112,"children":113},{},[114,116,122,124,129,131,134,136,141,143,146,148,153,155,159,161,164],{"type":16,"value":115},"Vulkan exposes one or more ",{"type":10,"tag":117,"props":118,"children":119},"em",{},[120],{"type":16,"value":121},"devices",{"type":16,"value":123},", each of which exposes one or more\n",{"type":10,"tag":117,"props":125,"children":126},{},[127],{"type":16,"value":128},"queues",{"type":16,"value":130}," which ",{"type":10,"tag":45,"props":132,"children":133},{"type":90},[],{"type":16,"value":135}," process work asynchronously to one another.\nThe set of queues supported by a device is partitioned into ",{"type":10,"tag":117,"props":137,"children":138},{},[139],{"type":16,"value":140},"families",{"type":16,"value":142},".\nEach family supports one or more types of functionality and ",{"type":10,"tag":45,"props":144,"children":145},{"type":90},[],{"type":16,"value":147}," contain\nmultiple queues with similar characteristics.\nQueues within a single family are considered ",{"type":10,"tag":117,"props":149,"children":150},{},[151],{"type":16,"value":152},"compatible",{"type":16,"value":154}," with one another,\nand work produced for a family of queues ",{"type":10,"tag":45,"props":156,"children":158},{"type":157},"can",[],{"type":16,"value":160}," be executed on any queue\nwithin that family.\nThis specification defines the following types of functionality that 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",{"type":10,"tag":282,"props":2073,"children":2075},{"className":2074},[],[2076],{"type":16,"value":2077},"*",{"type":16,"value":2079}," is the capitalized singular form of\nthe name of the retrieved values.",{"type":10,"tag":39,"props":2081,"children":2082},{},[2083,2085,2091,2092,2097],{"type":16,"value":2084},"A pointer to an array where the result array is retrieved,\nconventionally named as ",{"type":10,"tag":282,"props":2086,"children":2088},{"className":2087},[],[2089],{"type":16,"value":2090},"p*",{"type":16,"value":2071},{"type":10,"tag":282,"props":2093,"children":2095},{"className":2094},[],[2096],{"type":16,"value":2077},{"type":16,"value":2098}," is the capitalized plural\nform of the name of the retrieved values.",{"type":10,"tag":18,"props":2100,"children":2101},{},[2102,2104,2109,2111,2114,2116,2122,2124,2130],{"type":16,"value":2103},"If such commands are called with the array pointer set to 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",{"type":10,"tag":282,"props":2125,"children":2127},{"className":2126},[],[2128],{"type":16,"value":2129},"VK_SUCCESS",{"type":16,"value":2131},", to\nindicate that not all retrievable array elements were returned.",{"type":10,"tag":80,"props":2133,"children":2134},{},[2135,2140],{"type":10,"tag":18,"props":2136,"children":2137},{},[2138],{"type":16,"value":2139},"In practice, this means that applications will typically call such query\ncommands twice:",{"type":10,"tag":35,"props":2141,"children":2142},{},[2143,2155],{"type":10,"tag":39,"props":2144,"children":2145},{},[2146,2148,2153],{"type":16,"value":2147},"First, with the array pointer set to ",{"type":10,"tag":282,"props":2149,"children":2151},{"className":2150},[],[2152],{"type":16,"value":1922},{"type":16,"value":2154},", to retrieve the number of\nretrievable elements.",{"type":10,"tag":39,"props":2156,"children":2157},{},[2158],{"type":16,"value":2159},"Second, with the array pointer pointing to an application allocated\nstorage for at least as many elements as indicated by the variable\npointed to by the element count pointer, to retrieve at most as many of\nthe retrievable elements.",{"type":10,"tag":18,"props":2161,"children":2162},{},[2163,2165,2171,2173,2176],{"type":16,"value":2164},"Query commands that return one or more structures, regardless of whether\nthey return a single or an array of structures with or without a ",{"type":10,"tag":282,"props":2166,"children":2168},{"className":2167},[],[2169],{"type":16,"value":2170},"pNext",{"type":16,"value":2172},"\nchain, ",{"type":10,"tag":45,"props":2174,"children":2175},{"type":90},[],{"type":16,"value":2177}," also contain arrays within those structures.\nSuch return arrays are typically defined in the form of two members as\nfollows:",{"type":10,"tag":35,"props":2179,"children":2180},{},[2181,2200],{"type":10,"tag":39,"props":2182,"children":2183},{},[2184,2186,2192,2193,2198],{"type":16,"value":2185},"An integer value specifying the element count, conventionally named as\n",{"type":10,"tag":282,"props":2187,"children":2189},{"className":2188},[],[2190],{"type":16,"value":2191},"*Count",{"type":16,"value":2071},{"type":10,"tag":282,"props":2194,"children":2196},{"className":2195},[],[2197],{"type":16,"value":2077},{"type":16,"value":2199}," is the singular form of the name of the\nretrieved values.",{"type":10,"tag":39,"props":2201,"children":2202},{},[2203,2204,2209,2210,2215],{"type":16,"value":2084},{"type":10,"tag":282,"props":2205,"children":2207},{"className":2206},[],[2208],{"type":16,"value":2090},{"type":16,"value":2071},{"type":10,"tag":282,"props":2211,"children":2213},{"className":2212},[],[2214],{"type":16,"value":2077},{"type":16,"value":2098},{"type":10,"tag":18,"props":2217,"children":2218},{},[2219,2221,2226,2228,2231,2233,2238,2239,2244,2246,2252],{"type":16,"value":2220},"Analogously to query commands that return multiple results, if the command\nis called with the array pointer member of the output structure in question\nset to ",{"type":10,"tag":282,"props":2222,"children":2224},{"className":2223},[],[2225],{"type":16,"value":1922},{"type":16,"value":2227},", then the number of retrievable elements is returned in the\nelement count member of that output structure.\nOtherwise, the element count ",{"type":10,"tag":45,"props":2229,"children":2230},{"type":47},[],{"type":16,"value":2232}," specify the number of elements in the\nreturn array, and on return the element count member is overwritten with the\nnumber of elements actually written to the return array.\nIf the input element count is less than the number of retrievable array\nelements, the query will write only as many elements to the return array as\nspecified by the input element count, and the command will return\n",{"type":10,"tag":282,"props":2234,"children":2236},{"className":2235},[],[2237],{"type":16,"value":2121},{"type":16,"value":2123},{"type":10,"tag":282,"props":2240,"children":2242},{"className":2241},[],[2243],{"type":16,"value":2129},{"type":16,"value":2245},", if the query command has a\n",{"type":10,"tag":61,"props":2247,"children":2249},{"href":2248},"/man/VkResult",[2250],{"type":16,"value":2251},"VkResult",{"type":16,"value":2253}," return type, to indicate that not all retrievable array\nelements were returned.",{"type":10,"tag":80,"props":2255,"children":2256},{},[2257,2273],{"type":10,"tag":18,"props":2258,"children":2259},{},[2260,2262,2265,2267,2271],{"type":16,"value":2261},"Applications need to separately track the value they provided as the input\nelement count member for such arrays and compare those with the returned\nelement counts in order to determine whether the actually returned element\ncount is smaller than the size of the return array.\nAnother side effect of this is that it is impossible for the application to\ndetermine if the number of retrievable elements has increased beyond the\nprovided input element count so using return arrays in output structures\n",{"type":10,"tag":45,"props":2263,"children":2264},{"type":96},[],{"type":16,"value":2266}," be limited to ",{"type":10,"tag":117,"props":2268,"children":2269},{},[2270],{"type":16,"value":2029},{"type":16,"value":2272}," array results.\nIn practice, this means that applications will typically call such query\ncommands multiple times:",{"type":10,"tag":35,"props":2274,"children":2275},{},[2276,2288,2293],{"type":10,"tag":39,"props":2277,"children":2278},{},[2279,2281,2286],{"type":16,"value":2280},"First, with the array pointer member(s) set to ",{"type":10,"tag":282,"props":2282,"children":2284},{"className":2283},[],[2285],{"type":16,"value":1922},{"type":16,"value":2287},", to retrieve the\nnumber(s) of retrievable elements.",{"type":10,"tag":39,"props":2289,"children":2290},{},[2291],{"type":16,"value":2292},"Second, with the array pointer(s) pointing to an application allocated\nstorage for at least as many elements as indicated by the element count\nmember(s), to retrieve at most as many of the retrievable elements.",{"type":10,"tag":39,"props":2294,"children":2295},{},[2296,2298,2301],{"type":16,"value":2297},"Then the process ",{"type":10,"tag":45,"props":2299,"children":2300},{"type":90},[],{"type":16,"value":2302}," need to be repeated for all other newly introduced\nreturn arrays in any nested output structures indirectly specified\nthrough the previously retrieved result arrays.",{"type":10,"tag":18,"props":2304,"children":2305},{},[2306,2308,2311,2313,2318,2320,2323],{"type":16,"value":2307},"Regardless of the type of query command, any array pointer member of an\noutput structure ",{"type":10,"tag":45,"props":2309,"children":2310},{"type":47},[],{"type":16,"value":2312}," either be ",{"type":10,"tag":282,"props":2314,"children":2316},{"className":2315},[],[2317],{"type":16,"value":1922},{"type":16,"value":2319},", or point to an\napplication-allocated array.\nQuery commands ",{"type":10,"tag":45,"props":2321,"children":2322},{"type":47},[],{"type":16,"value":2324}," not return a pointer to implementation allocated\nstorage in any output structure.",{"type":10,"tag":23,"props":2326,"children":2328},{"id":2327},"fundamentals-threadingbehavior",[2329],{"type":16,"value":2330},"Threading Behavior",{"type":10,"tag":18,"props":2332,"children":2333},{},[2334,2336,2341,2343,2346],{"type":16,"value":2335},"Vulkan is intended to provide scalable performance when used on multiple\nhost threads.\nAll commands support being called concurrently from multiple threads, but\ncertain parameters, or components of parameters are defined to be\n",{"type":10,"tag":117,"props":2337,"children":2338},{},[2339],{"type":16,"value":2340},"externally synchronized",{"type":16,"value":2342},".\nThis means that the caller ",{"type":10,"tag":45,"props":2344,"children":2345},{"type":47},[],{"type":16,"value":2347}," guarantee that no more than one thread is\nusing such a parameter at a given time.",{"type":10,"tag":18,"props":2349,"children":2350},{},[2351,2353,2356,2358,2361],{"type":16,"value":2352},"More precisely, Vulkan commands use simple stores to update the state of\nVulkan objects.\nA parameter declared as externally synchronized ",{"type":10,"tag":45,"props":2354,"children":2355},{"type":90},[],{"type":16,"value":2357}," have its contents\nupdated at any time during the host execution of the command.\nIf two commands operate on the same object and at least one of the commands\ndeclares the object to be externally synchronized, then the caller ",{"type":10,"tag":45,"props":2359,"children":2360},{"type":47},[],{"type":16,"value":2362},"\nguarantee not only that the commands do not execute simultaneously, but also\nthat the two commands are separated by an appropriate memory barrier (if\nneeded).",{"type":10,"tag":80,"props":2364,"children":2365},{},[2366],{"type":10,"tag":18,"props":2367,"children":2368},{},[2369],{"type":16,"value":2370},"Memory barriers are particularly relevant for hosts based on the ARM CPU\narchitecture, which is more weakly ordered than many developers are\naccustomed to from x86/x64 programming.\nFortunately, most higher-level synchronization primitives (like the pthread\nlibrary) perform memory barriers as a part of mutual exclusion, so mutexing\nVulkan objects via these primitives will have the desired effect.",{"type":10,"tag":18,"props":2372,"children":2373},{},[2374,2376,2379,2381,2387,2389,2392,2394,2397,2399,2405,2407,2412,2414,2418],{"type":16,"value":2375},"Similarly the application ",{"type":10,"tag":45,"props":2377,"children":2378},{"type":47},[],{"type":16,"value":2380}," avoid any potential data hazard of\napplication-owned memory that has its\n",{"type":10,"tag":61,"props":2382,"children":2384},{"href":2383},"/chapters/fundamentals#fundamentals-objectmodel-lifetime-acquire",[2385],{"type":16,"value":2386},"ownership temporarily acquired",{"type":16,"value":2388},"\nby a Vulkan command.\nWhile the ownership of application-owned memory remains acquired by a\ncommand the implementation ",{"type":10,"tag":45,"props":2390,"children":2391},{"type":90},[],{"type":16,"value":2393}," read the memory at any point, and it ",{"type":10,"tag":45,"props":2395,"children":2396},{"type":90},[],{"type":16,"value":2398},"\nwrite non-",{"type":10,"tag":282,"props":2400,"children":2402},{"className":2401},[],[2403],{"type":16,"value":2404},"const",{"type":16,"value":2406}," qualified memory at any point.\nParameters referring to non-",{"type":10,"tag":282,"props":2408,"children":2410},{"className":2409},[],[2411],{"type":16,"value":2404},{"type":16,"value":2413}," qualified application-owned memory\nare not marked explicitly as ",{"type":10,"tag":117,"props":2415,"children":2416},{},[2417],{"type":16,"value":2340},{"type":16,"value":2419}," in the Specification.",{"type":10,"tag":18,"props":2421,"children":2422},{},[2423,2425,2431,2433,2436],{"type":16,"value":2424},"If an application is using ",{"type":10,"tag":61,"props":2426,"children":2428},{"href":2427},"/chapters/deferred-host-operations#deferred-host-operations",[2429],{"type":16,"value":2430},"deferred host\noperations",{"type":16,"value":2432}," in a command, and that operation is successfully deferred,\nobject parameters and application-owned memory passed to that command ",{"type":10,"tag":45,"props":2434,"children":2435},{"type":90},[],{"type":16,"value":2437},"\nbe accessed at any time until the deferred operation is complete.",{"type":10,"tag":18,"props":2439,"children":2440},{},[2441,2443,2448,2450,2453,2455,2458,2460,2463,2465,2468],{"type":16,"value":2442},"Many object types are ",{"type":10,"tag":117,"props":2444,"children":2445},{},[2446],{"type":16,"value":2447},"immutable",{"type":16,"value":2449},", meaning the objects ",{"type":10,"tag":45,"props":2451,"children":2452},{"type":1294},[],{"type":16,"value":2454}," change once\nthey have been created.\nThese types of objects never need external synchronization, except that they\n",{"type":10,"tag":45,"props":2456,"children":2457},{"type":47},[],{"type":16,"value":2459}," not be destroyed while they are in use on another thread.\nIn certain special cases mutable object parameters are internally\nsynchronized, making external synchronization unnecessary.\nAny command parameters that are not labeled as externally synchronized are\neither not mutated by the command or are internally synchronized.\nAdditionally, certain objects related to a command’s parameters (e.g.\ncommand pools and descriptor pools) ",{"type":10,"tag":45,"props":2461,"children":2462},{"type":90},[],{"type":16,"value":2464}," be affected by a command, and ",{"type":10,"tag":45,"props":2466,"children":2467},{"type":47},[],{"type":16,"value":2469},"\nalso be externally synchronized.\nThese implicit parameters are documented as described below.",{"type":10,"tag":18,"props":2471,"children":2472},{},[2473],{"type":16,"value":2474},"Parameters of commands that are externally synchronized are listed below.",{"type":10,"tag":18,"props":2476,"children":2477},{},[2478,2480,2485,2487,2493,2495,2501,2503,2509,2511,2517],{"type":16,"value":2479},"For ",{"type":10,"tag":61,"props":2481,"children":2483},{"href":2482},"/man/VkPipelineCache",[2484],{"type":16,"value":813},{"type":16,"value":2486}," objects created with ",{"type":10,"tag":282,"props":2488,"children":2490},{"className":2489},[],[2491],{"type":16,"value":2492},"flags",{"type":16,"value":2494}," containing\n",{"type":10,"tag":282,"props":2496,"children":2498},{"className":2497},[],[2499],{"type":16,"value":2500},"VK_PIPELINE_CACHE_CREATE_EXTERNALLY_SYNCHRONIZED_BIT",{"type":16,"value":2502},", the above table\nis extended with the ",{"type":10,"tag":282,"props":2504,"children":2506},{"className":2505},[],[2507],{"type":16,"value":2508},"pipelineCache",{"type":16,"value":2510}," parameter to\n",{"type":10,"tag":282,"props":2512,"children":2514},{"className":2513},[],[2515],{"type":16,"value":2516},"vkCreate*Pipelines",{"type":16,"value":2518}," being externally synchronized.",{"type":10,"tag":18,"props":2520,"children":2521},{},[2522,2524,2527,2529,2532],{"type":16,"value":2523},"There are also a few instances where a command ",{"type":10,"tag":45,"props":2525,"children":2526},{"type":157},[],{"type":16,"value":2528}," take in an\napplication-allocated list whose contents are externally synchronized\nparameters.\nIn these cases, the caller ",{"type":10,"tag":45,"props":2530,"children":2531},{"type":47},[],{"type":16,"value":2533}," guarantee that at most one thread is using\na given element within the list at a given time.\nThese parameters are listed below.",{"type":10,"tag":18,"props":2535,"children":2536},{},[2537,2539,2545,2547,2553],{"type":16,"value":2538},"In addition, there are some implicit parameters that need to be externally\nsynchronized.\nFor example, when a ",{"type":10,"tag":282,"props":2540,"children":2542},{"className":2541},[],[2543],{"type":16,"value":2544},"commandBuffer",{"type":16,"value":2546}," parameter needs to be externally\nsynchronized, it implies that the ",{"type":10,"tag":282,"props":2548,"children":2550},{"className":2549},[],[2551],{"type":16,"value":2552},"commandPool",{"type":16,"value":2554}," from which that command\nbuffer was allocated also needs to be externally synchronized.\nThe implicit parameters and their associated object are listed below.",{"type":10,"tag":23,"props":2556,"children":2558},{"id":2557},"fundamentals-validusage",[2559],{"type":16,"value":2560},"Valid Usage",{"type":10,"tag":466,"props":2562,"children":2564},{"id":2563},"fundamentals-errors",[],{"type":10,"tag":18,"props":2566,"children":2567},{},[2568,2570,2573],{"type":16,"value":2569},"Valid usage defines a set of conditions which ",{"type":10,"tag":45,"props":2571,"children":2572},{"type":47},[],{"type":16,"value":2574}," be met in order to\nachieve well-defined runtime behavior in an application.\nThese conditions depend only on Vulkan state, and the parameters or objects\nwhose usage is constrained by the condition.",{"type":10,"tag":18,"props":2576,"children":2577},{},[2578,2580,2583,2585,2588,2590,2593,2595,2598,2600,2605,2607,2611],{"type":16,"value":2579},"The core layer assumes applications are using the API correctly.\nExcept as documented elsewhere in the Specification, the behavior of the\ncore layer to an application using the API incorrectly is undefined:, and\n",{"type":10,"tag":45,"props":2581,"children":2582},{"type":90},[],{"type":16,"value":2584}," include program termination.\nHowever, implementations ",{"type":10,"tag":45,"props":2586,"children":2587},{"type":47},[],{"type":16,"value":2589}," ensure that incorrect usage by an application\ndoes not affect the integrity of the operating system, the Vulkan\nimplementation, or other applications in the system using Vulkan.\nIn particular, any guarantees made by an operating system about whether\nmemory from one process ",{"type":10,"tag":45,"props":2591,"children":2592},{"type":157},[],{"type":16,"value":2594}," be visible to another process or not ",{"type":10,"tag":45,"props":2596,"children":2597},{"type":47},[],{"type":16,"value":2599}," not\nbe violated by a Vulkan implementation for ",{"type":10,"tag":117,"props":2601,"children":2602},{},[2603],{"type":16,"value":2604},"any memory allocation",{"type":16,"value":2606},".\nVulkan implementations are not ",{"type":10,"tag":45,"props":2608,"children":2610},{"type":2609},"required",[],{"type":16,"value":2612}," to make additional security or\nintegrity guarantees beyond those provided by the OS unless explicitly\ndirected by the application’s use of a particular feature or extension.",{"type":10,"tag":80,"props":2614,"children":2615},{},[2616,2633],{"type":10,"tag":18,"props":2617,"children":2618},{},[2619,2621,2624,2626,2631],{"type":16,"value":2620},"For instance, if an operating system guarantees that data in all its memory\nallocations are set to zero when newly allocated, the Vulkan implementation\n",{"type":10,"tag":45,"props":2622,"children":2623},{"type":47},[],{"type":16,"value":2625}," make the same guarantees for any allocations it controls (e.g.\n",{"type":10,"tag":61,"props":2627,"children":2629},{"href":2628},"/man/VkDeviceMemory",[2630],{"type":16,"value":1055},{"type":16,"value":2632},").",{"type":10,"tag":18,"props":2634,"children":2635},{},[2636,2638,2641],{"type":16,"value":2637},"Similarly, if an operating system guarantees that use-after-free of host\nallocations will not result in values written by another process becoming\nvisible, the same guarantees ",{"type":10,"tag":45,"props":2639,"children":2640},{"type":47},[],{"type":16,"value":2642}," be made by the Vulkan implementation for\ndevice memory.",{"type":10,"tag":18,"props":2644,"children":2645},{},[2646],{"type":16,"value":2647},"Some valid usage conditions have dependencies on runtime limits or feature\navailability.\nIt is possible to validate these conditions against Vulkan’s minimum\nsupported values for these limits and features, or some subset of other\nknown values.",{"type":10,"tag":18,"props":2649,"children":2650},{},[2651],{"type":16,"value":2652},"Valid usage conditions do not cover conditions where well-defined behavior\n(including returning an error code) exists.",{"type":10,"tag":18,"props":2654,"children":2655},{},[2656,2658,2661,2663,2666],{"type":16,"value":2657},"Valid usage conditions ",{"type":10,"tag":45,"props":2659,"children":2660},{"type":96},[],{"type":16,"value":2662}," apply to the command or structure where\ncomplete information about the condition would be known during execution of\nan application.\nThis is such that a validation layer or linter ",{"type":10,"tag":45,"props":2664,"children":2665},{"type":157},[],{"type":16,"value":2667}," be written directly\nagainst these statements at the point they are specified.",{"type":10,"tag":80,"props":2669,"children":2670},{},[2671,2676],{"type":10,"tag":18,"props":2672,"children":2673},{},[2674],{"type":16,"value":2675},"This does lead to some non-obvious places for valid usage statements.\nFor instance, the valid values for a structure might depend on a separate\nvalue in the calling command.\nIn this case, the structure itself will not reference this valid usage as it\nis impossible to determine validity from the structure that it is invalid -\ninstead this valid usage would be attached to the calling command.",{"type":10,"tag":18,"props":2677,"children":2678},{},[2679],{"type":16,"value":2680},"Another example is draw state - the state setters are independent, and can\ncause a legitimately invalid state configuration between draw calls; so the\nvalid usage statements are attached to the place where all state needs to be\nvalid - at the drawing command.",{"type":10,"tag":18,"props":2682,"children":2683},{},[2684,2686,2691],{"type":16,"value":2685},"Valid usage conditions are described in a block labeled ",{"type":10,"tag":282,"props":2687,"children":2689},{"className":2688},[],[2690],{"type":16,"value":2560},{"type":16,"value":2692},"\nfollowing each 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