1

Topic: Rust and DirectX 12

Started to make comments on source codes of a test aaplet on the sly. The program deduces a quantity  cubes, preparing command lists for GPU in some flows. Can be to someone will to look interesting that is DX12 and Rust. https://github.com/red75prime/dxgen/blo … c/cubes.rs

2

Re: Rust and DirectX 12

Hello, red75, you wrote: R> the Program deduces a quantity  cubes, preparing command lists for GPU in some flows. R> can be to someone will to look interesting that is DX12 and Rust. R> https://github.com/red75prime/dxgen/blo … c/cubes.rs and there is something more nice by sight? Now it looks is not worse almost than pluses.

3

Re: Rust and DirectX 12

Hello, neFormal, you wrote: F> and there is something more nice by sight? F> now it looks is not worse almost than pluses. Please. Nice on determination. Miss Universe 2014: http://img01.ibnlive.in/ibnlive/uploads … ojan26.jpg H'm. Likely on someone's taste very nice.

4

Re: Rust and DirectX 12

F> and there is something more nice by sight? F> now it looks is not worse almost than pluses. There is nothing to roll here a butt on With ++. To involve DirectX in With ++ it is possible quite laconically and readably. Here the problem that it like as almost direct  is faster than titles from SDK in . Conveniences  (if they are available) with such approach it is impossible to experience. Some places generally I cause tearing away. Here for example: pub fn set_fullscreen (&self, fullscreen: bool)-> HResult <HRESULT> {self.swap_chain.swap_chain.set_fullscreen_state (if fullscreen {1} else {0}, None)} the Second swap_chain can because of crookedly named variables turned out, but why it is impossible to make somehow hresult of one word? Explicit this (self?) is a step reversely in With. And  it is not clear how plainly to implement error handling with the approach  "exceptions are not necessary"? Checks of results with unwrap (?) almost on each line it is awful, one more degradation in With.

5

Re: Rust and DirectX 12

Hello, VTT, you wrote: VTT> There is nothing to roll here a butt on With ++. To involve DirectX in With ++ it is possible quite laconically and readably. And it will be approximately at the same level, as the resulted code. Therefore it would be desirable more indicative examples.

6

Re: Rust and DirectX 12

Hello, VTT, you wrote: VTT> There is nothing to roll here a butt on With ++. To involve DirectX in With ++ it is possible quite laconically and readably. m_commandQueue-> ExecuteCommandLists (_countof (ppCommandLists), ppCommandLists); the Line from Microsoft' hello-vorlda. It is possible to lead, of course, more to a decent view something like a macro which I resulted more low. VTT> the problem that it like as almost direct  here is faster than titles from SDK in . VTT>  (if they are available) with such approach it is impossible to experience Conveniences. One only transmission of the size of an array together with a array eliminates set of points in which it is possible to make an error. Or try to rewrite submit_in_parallel () on With ++ so that earned from the first. It is added A BIT LATER: Than it is good Rust, it those that can construct  a stable platform for code writing. In difference from With ++ in which, how many  and macroes do not wind, always it is possible to catch  the iterator, or the link which specifies on  storage. VTT> some places generally I cause tearing away. Here for example: VTT> pub fn set_fullscreen (&self, fullscreen: bool)-> HResult <HRESULT> VTT> {VTT> self.swap_chain.swap_chain.set_fullscreen_state (if fullscreen {1} else {0}, None) VTT>} And how to you this miracle from depths of heading files? extern "a C ++" {template <typename T> _Post_equal_to _ (pp) _Post_satisfies _ (return == pp) void ** IID_PPV_ARGS_Helper (T ** pp) {static_cast <IUnknown *> (*pp);//make sure everyone derives from IUnknown return reinterpret_cast <void **> (pp);} } #define IID_PPV_ARGS (ppType) __ uuidof (** (ppType)), IID_PPV_ARGS_Helper (ppType) I set_fullscreen too wrote less to climb in interior DXSwapchain. VTT> the Second swap_chain can because of crookedly named variables it turned out, but why it is impossible to make somehow hresult of one word? It is possible. type HResultOrStatus = HResult <HRESULT>; But it is not so frequent case when function can return not an error, and, for example, DXGI_STATUS_MODE_CHANGE_IN_PROGRESS. Normally I write HResult <()>. VTT> Explicit this (self?) Is a step reversely in S.Eto not so pleasant consequence of aspiration of developers Rust' to avoid implicit things. Is in function arguments self? Is. Means should be and in a call. Can and remove sometime. But especially does not strain. And a step to With it it is not always bad. And it is not always reverse. Hint: composition over inheritance. VTT> and  it is not clear how plainly to implement error handling with the approach  "exceptions are not necessary"? VTT> Checks of results with unwrap (?) almost on each line it is awful, one more degradation in S.Vy my code looked? Here and there there try! Is. As I will be going to implement error recovery, I will add everywhere. For now is worse nothing than example Microsoft'. They there throw exceptions, but the care of saving of a consistent state after an exception call there is not present, yes that there, there even capture of exceptions is not present.

7

Re: Rust and DirectX 12

Hello, red75, you wrote: R> Hello, VTT, you wrote: VTT>> There is nothing to roll here a butt on With ++. To involve DirectX in With ++ it is possible quite laconically and readably. R> m_commandQueue-> ExecuteCommandLists (_countof (ppCommandLists), ppCommandLists); R> the Line from Microsoft' hello-vorlda. It is possible to lead, of course, more to a decent view something like a macro which I resulted more low. VTT>> the problem that it like as almost direct  here is faster than titles from SDK in . VTT>>  (if they are available) with such approach it is impossible to experience Conveniences. R> Or try to rewrite R> submit_in_parallel () on With ++ so that earned from the first. Under "laconic and readable" I normally imply something similar on Simple English; nouns-variables, a verb-method, with a minimum , sticks and other , for example: renderer. Execute (commands); Frankly speaking, in  it is explicitly not enough my knowledge to master this fragment. Many places straight off generally is unreal to digest, for example: crossbeam:: scope (|scope |... scope.spawn:: <_, HResult <()>> (move || the first scope is similar to a method, the second on any special keyword or the directive, and the third - on a variable,  that is all means... ((And (start, count), and (ref clist, ref callocator)), th_n) in chunks.iter ().zip (ps.gc_lists.iter ()).zip (1.) a cycle (?) Directs horror... pub fn on_render (&mut self, x: i32, y: i32) {on_render (self, x, y)} many methods look as if cause itself recursively R> One only transmission of the size of an array together with a array eliminates set of points in which it is possible to make an error. R> than it is good Rust, it those that can construct  a stable platform for code writing. R> in difference from With ++ in which, how many  and macroes do not wind, always it is possible to catch R>  the iterator, or the link which specifies on  storage. Well the size of an array anybody and in With ++ to transfer does not hinder. Personally for me such problems sharply do not stand. R> and how to you this miracle from depths of heading files? R> R> extern "a C ++" R> {R> template <typename T> _Post_equal_to _ (pp) _Post_satisfies _ (return == pp) void ** IID_PPV_ARGS_Helper (T ** pp) R> {R> static_cast <IUnknown *> (*pp); //make sure everyone derives from IUnknown R> return reinterpret_cast <void **> (pp); R>} R>} R>#define IID_PPV_ARGS (ppType) __ uuidof (** (ppType)), IID_PPV_ARGS_Helper (ppType) R> it is good that I refused for a long time usage of this macro... R> But it is not so frequent case when function can return not an error, and, for example, DXGI_STATUS_MODE_CHANGE_IN_PROGRESS. R> Normally I write HResult <()>. And whether there is no method to emulate exceptions that not  everywhere these HRESULT? R> This not so pleasant consequence of aspiration of developers Rust' to avoid implicit things. Desire laudable. But it is implemented somehow strange. As I understood, with  variables from exterior areas of visibility such approach does not solve a problem in any way. R> you my code looked? Here and there there try! Is. As I will be going to implement error recovery, I will add everywhere. Here by the way presence in language of such macroes (generally presence of macroes) causes very bad sensations. R> For now is worse nothing than example Microsoft'. They there throw exceptions, but the care of saving of a consistent state after an exception call there is not present, yes that there, there even capture of exceptions is not present. Well examples MS explicitly do not need to be considered as the quality standard. And in what it is examples they so is dashing rush exceptions?

8

Re: Rust and DirectX 12

Hello, VTT, you wrote: R>> Or try to rewrite R>> submit_in_parallel () on With ++ so that earned from the first. VTT> under "laconic and readable" I normally imply something similar on Simple English; VTT> nouns-variables, a verb-method, with a minimum , sticks and other , for example: VTT> renderer. Execute (commands); VTT> Many places straight off generally is unreal to digest, for example: VTT> crossbeam:: scope (|scope | VTT>... VTT> scope.spawn:: <_, HResult <()>> (move || VTT> the first scope is similar to a method, the second on any special keyword or the directive, and the third - on a variable,  that is all means... crossbeam:: scope it is function invocation scope from crossbeam unit. Basically, too as in With ++ with  (and year to 2017 like and units add). |x | {x+2} it is a lambda. Analog in With ++: [] (auto x) {return x+2;} Truth I do not remember, allows With ++ auto in lambdas or not. crossbeam:: scope transfers in lambda RAII-guard (scope). It is guaranteed that RAII-guard quits visibility area only then when all flows created with its help (scope.spawn () it as-time creation of the flow having access to local variables), will be completed. move in a lambda move || {... Means that the lambda receives not links to local variables, and becomes their owner. Here it is not especially important, and long to explain. VTT> ((and (start, count), and (ref clist, ref callocator)), th_n) in chunks.iter ().zip (ps.gc_lists.iter ()).zip (1.) VTT> a cycle (?) Directs horror... The Cycle. In With ++ there would be something like... . Well, likely... if (chunks.length ()! = ps.gc_lists.length ()) {throw "different lenghts"} else {for (int i=0; i <chunks.length (); i ++) {int start=chunks [i].start; int count=chunks [i].count; auto &clist = &ps.gc_lists [i].clist;//it is not assured about that as auto interacts with links auto &callocator = &ps.gc_lists [i].clist; int th_n = i+1;...} } VTT> pub fn on_render (&mut self, x: i32, y: i32) {VTT> on_render (self, x, y) VTT>} VTT> many methods look as if cause itself recursively I Prefer to use functions. If in front of the identifier there is no point, it always function. R>> one only transmission of the size of an array together with a array eliminates set of points in which it is possible to make an error. R>> than it is good Rust, it those that can construct  a stable platform for code writing. R>> in difference from With ++ in which, how many  and macroes do not wind, always it is possible to catch R>>  the iterator, or the link which specifies on  storage. VTT> well the size of an array anybody and in With ++ to transfer does not hinder. VTT> personally for me such problems sharply do not stand. Any core-dump'a, buffer overrun'a, abstract method call'a, use of uninitialized variable, overlapping memory region copy? Fairly? Check up the static analyzer the code. R>> but it is not so frequent case when function can return not an error, and, for example, DXGI_STATUS_MODE_CHANGE_IN_PROGRESS. R>> Normally I write HResult <()>. VTT> And whether there is no method to emulate exceptions that not  everywhere these HRESULT? unwrap () kills the flow in which is fulfilled, with a call of all . From other flow it is possible to process this situation. But such it is not recommended. R>> This not so pleasant consequence of aspiration of developers Rust' to avoid implicit things. VTT> desire laudable. But it is implemented somehow strange. As I understood, with  variables from exterior areas of visibility such approach does not solve a problem in any way. On this case is . R>> you my code looked? Here and there there try! Is. As I will be going to implement error recovery, I will add everywhere. VTT> Here by the way presence in language of such macroes (generally presence of macroes) causes very bad sensations. Well, at me std:: cout <<std:: hex <<std:: width (8) <<static_cast <intptr_t> (ptr) <<std:: endl; causes laughter. , println! ("{:8x}", ptr) it will be better. R>> for now is worse nothing than example Microsoft'. They there throw exceptions, but the care of saving of a consistent state after an exception call there is not present, yes that there, there even capture of exceptions is not present. VTT> Well examples MS explicitly do not need to be considered as the quality standard. And in what it is examples they so is dashing rush exceptions? https://github.com/Microsoft/DirectX-Gr … er/Samples and exception-safe it is necessary  to search for the program long.

9

Re: Rust and DirectX 12

Hello, red75, you wrote: R> Any core-dump'a, buffer overrun'a, abstract method call'a, use of uninitialized variable, R> overlapping memory region copy? Fairly? Check up the static analyzer the code. Such things if happen, is normal because of the exterior reasons: bugs in indirect libraries, binary incompatibility, a problem with a configuration, hardware problems, etc. to catch abstract method call it is necessary to bungle very strongly, I at all will not remember such cases. And yes, I and so try to check not only the static analyzer (here truth all is bad for access to corporate commercial decisions is not present, the analyzer in VS is rather weak and it is not accessible under linux, and cppcheck already all), but also in . R> Well, at me std:: cout <<std:: hex <<std:: width (8) <<static_cast <intptr_t> (ptr) <<std:: endl; causes laughter. R> Taki, println! ("{:8x}", ptr) it will be better. iostreams is one of the ugliest parts of standard library. A unique profit - in possibility to overload operator of input/conclusion for the class instead of  their output each time. Such in  it is provided? On print at me generally an allergy, first of all because of From coders which for some reason love  own extremely  variations (and the same parcers). R> https://github.com/Microsoft/DirectX-Gr … er/Samples Well I do not know, these examples show operation with API DirectX, instead of exception-safe programming. It seems to me that ignoring hresult would be heavier error, rather than rejection of thus not caught exception without care of the further life of the program.

10

Re: Rust and DirectX 12

Hello, red75, you wrote: R> Can be to someone will to look interesting that is DX12 and Rust. R> https://github.com/red75prime/dxgen/blo … c/cubes.rs And what sense to save on length of titles? Why M4, instead of Matrix4?

11

Re: Rust and DirectX 12

Hello, Nik, you wrote: R>> Can be to someone will to look interesting that is DX12 and Rust. R>> https://github.com/red75prime/dxgen/blo … c/cubes.rs N> And what sense to save on length of titles? Why M4, instead of Matrix4? Matrix3 <T>, Matrix4 <T> are imported from  cgmath. 4 less to print and show that it is more primitive type. Besides M4 it is used only in cubes unit. And export of these types from the unit really should be removed, thanks.

12

Re: Rust and DirectX 12

Hello, red75, you wrote: R> Matrix3 <T>, Matrix4 <T> are imported from  cgmath. 4 less to print I.e. because of problems of the editor (there is an autocompletion) it is necessary to transform the code into a dial-up of hieroglyphs clear only to the author? R> and to show that R> is more primitive type. On Matrix4 and so it is clear.

13

Re: Rust and DirectX 12

Hello, Nik, you wrote: N> Hello, red75, you wrote: R>> Matrix3 <T>, Matrix4 <T> are imported from  cgmath. 4 less to print N> I.e. because of problems of the editor (there is an autocompletion) it is necessary to transform the code into a dial-up of hieroglyphs clear only to the author? In VisualRust autocompletion in this case as-time works. And not hieroglyphs, and abbreviations. Transferred type M4 =. To a unique place where it is used (struct Constants).

14

Re: Rust and DirectX 12

Hello, red75, you wrote: R> In VisualRust autocompletion in this case as-time works. And not hieroglyphs, and abbreviations. Abbreviations have the right to existence only when they are standard or display a name space (i.e. meet very often).