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this is a set of modifications to modernize parts of the code #1515

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@jfmherokiller jfmherokiller commented Oct 23, 2023

feel free to poke around here. this draft is more an experiment then an actual draft atm.

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using static constexpr seems to incrase compile time but atleast under my tests also provides some marginal speedups

@jfmherokiller jfmherokiller marked this pull request as ready for review October 25, 2023 03:58
return {p0.fY * p1.fZ - p0.fZ * p1.fY,
p0.fZ * p1.fX - p0.fX * p1.fZ,
p0.fX * p1.fY - p0.fY * p1.fX
};
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This should probably remain an hsVector3 for type safety and clarity. I don't think there's any performance impact here.

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fair enough i just found it as duplicating the type since the function already returns it.

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Always better to use the defined constructor for an object instead of pushing in memory directly. Even if it's a bit duplicative with the type name.

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@dgelessus - I see your emoji. I'm poking at this and I see C++ is policing the number of elements in the struct. However - this struct does have a defined constructor and it does seem weird to go around it.

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Ah, I wanted to explain later and forgot, sorry. As I understand it, the brace syntax in this case will use the constructor defined in the class, despite the brace syntax. According to cppreference, the C-style field by field initialization is called aggregate initialization, which never applies to classes with user-defined constructors. Instead, the brace syntax does list initialization here, which in this case calls the normal constructor, exactly like the previous code.

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@dgelessus Thanks! I'll review the docs.

| D3DFVF_TEX1 | D3DFVF_TEXCOORDSIZE3(0);

static D3DMATRIX d3dIdentityMatrix{ 1.0f, 0.0f, 0.0f, 0.0f,
static constexpr D3DMATRIX d3dIdentityMatrix{ 1.0f, 0.0f, 0.0f, 0.0f,
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I don't know if the identity matrix should be constexpr. Something being both static and constexpr may already be a bit of a paradox. But the identity matrix is loaded as a buffer from a pointer, which means it can't actually be constexpr easily by a compiler. And it might be more optimal just to have one copy of the buffer in memory anyway.

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static constexpr is perfectly valid. Sometimes you have things that can be used at both compile-time and runtime. In this case, we aren't doing any compile-time matrix math, so it probably makes more sense to just leave this one alone. I doubt that the generated machine code is any different since we're just going to be pushing a pointer onto the stack.

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i can revert this if desired

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Hoikas commented Oct 26, 2023

You may revert or remove 843c93b

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jfmherokiller commented Oct 31, 2023

dropped the commit

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This PR covers an odd set of topics. I think we would prefer to see changesets grouped by topic where possible.

Sources/Plasma/Apps/plPythonPack/main.cpp Outdated Show resolved Hide resolved
Sources/Plasma/Apps/plPythonPack/main.cpp Outdated Show resolved Hide resolved
Sources/Plasma/PubUtilLib/plMath/plTriUtils.cpp Outdated Show resolved Hide resolved
@@ -55,7 +55,7 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
#if HS_BUILD_FOR_WIN32
# include "hsWindows.h"
# include <io.h>
# define isatty _isatty
# define ttycheck(fileinfo) (GetFileType(fileinfo) == FILE_TYPE_CHAR)
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We prefer to use standards compliant mechanisms. AFAIK, isatty is part of the POSIX standard. The Windows SDK just emits an erroneous deprecation warning with isatty and wants _isatty (which is just the Microsoft way of making life more difficult for cross-platform development). Is there a particular bug that is fixed by using (GetFileType(fileinfo) == FILE_TYPE_CHAR) instead of _isatty?

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yes it does if the user attempts compile and run the game using msys2 or cygwin the value of _isatty can be invalid.

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In that case, you should probably fix the preprocessor checks to detect that situation to use isatty.

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shouldnt HS_BUILD_FOR_WIN32 handle that?

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HS_BUILD_FOR_WIN32 will be defined for MSVC, clang-cl, and mingw

In this case, you'll need an extra check for mingw to avoid aliasing isatty

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This still seems to be using non-standards complaint naming, unfortunately. We prefer the POSIX standard isatty.

jfmherokiller and others added 5 commits November 3, 2023 12:49
Co-authored-by: Adam Johnson <AdamJohnso@gmail.com>
Co-authored-by: Adam Johnson <AdamJohnso@gmail.com>
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Hoikas commented Nov 10, 2023

Due to the changes to pfDXPipeline, this will be deferred until after #1326 is merged.

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fine by me I just hope the mac port lands successfully

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7 participants