This function indirectly determines the amount of average audio latency, this is why changes to BitmapText can affect global offset significantly. Aim to make the function as fast as possible to minimize latency.
1) make BitmapText::DrawPrimitives noexcept
- note: RollingNumbers::DrawPrimitives has to also become noexcept as a consequence
2) Define repeated calculations as constexpr functions defined within an anonymous namespace
3) Fix some formatting stuff
Currently we are storing the default driver lists as a macro, and splitting them into RString vectors every time they are needed. This commit changes the macros in `arch_default.h` into vectors of RStrings, so that they do not need to be split each time.
I have updated all references where the default driver lists are being called so that the vector is used directly.
A new function is added to RageUtil to make a compatible vector of RStrings from user input which may be separated with a comma.
RageSoundDriver was refactored to check user input in Preferences.ini against the default driver list, and in case of incorrect spelling or failure, provides a detailed error message (including a list of valid options) in logs so the user can resolve the problem.
`fix_bogus_sound_driver_pref` is no longer needed, since we are now telling the user what their valid options are if the user provides an incorrect entry for the `SoundDrivers` preference, instead of silently attempting to guess what the user wanted. Since I think it's rare that someone wants to specify a driver to begin with, we should let them know their exact options if they put something wrong here, instead of silently failing or using an unwanted driver.
I tested this on Windows by specifying `DirectSound-sw` in Preferences.ini, and it worked as expected. I also tried putting an unusable value in, and got the error in logs letting me know what my valid driver options were. Of course, input and movies all work as expected too.
- Use fast data types where possible so the compiler can optimize for speed based on platform
- for example, 128 bits might be fastest on ARM
- good future-proofing
- Refactor GetTimeSinceStart() to be a bit faster
- multiplication is much faster than division
- Implement a RageTimer method to get the seconds value as a plain int, for the places which cast the seconds value to an int
- Changing from GetTimeSinceStartFast() to GetTimeSinceStart() where accuracy is important
- Changing from GetTimeSinceStart() to GetUsecsSinceStart() for timestamp diffs
- Adjust RageThreads to accomodate an unsigned timestamp value
- a constant for the maximum value of `uint_fast64_t` replaces `-1` to accommodate the change from signed to unsigned for the `locked_at` variable
- i have separate constants for `std::numeric_limits<std::uint_fast64_t>::max()` and `static_cast<std::uint_fast64_t>(-1)`, so the reader understands -1 represents an error code, though they evaluate to the same value, so i could remove one of the two
- Add two methods to calculate the MMSSMsMs / MMSSMsMsMs time value from usecs directly instead of inferring it from a seconds value, in RageUtil
- Use a similar counter/modulo based method for WheelNotifyIcon, similar to what i did for text_glow in NoteField in 2eeee03
- Make `g_iStartTime` static const for safety
Rename two timer functions:
GetUsecsSinceStart -> GetTimeSinceStartMicroseconds
GetMicrosecondsSinceStart -> GetSystemTimeAsMicroseconds
Remove std prefix from uint_fast64_t
Increasing security and efficiency of math in order to prevent potential errors from occurring.
1. L is a macro made to equal 8. It's only used in conjunction with other `int`'s, so it's safe to make into a constant called FILTER_LENGTH.
2. Define a very tiny number to avoid a potential mistake in ApplyKaiserWindow.
3. Define constants for BesselI0, making the functions easier to read but also improve security of the math.
4. Make some variables const and prevent redundant calculations or variable creations in ApplyKaiserWindow and GenerateSincLowPassFilter.
5. Use `double` interally in GenerateSincLowPassFilter
For the purposes of type safety, allowing the compiler to further optimize, and preventing possible name collisions, I've converted these 13 macros to constexpr's.
1) Remove Win SDK headers directory (src/archutils/Win32/ddk)
2) Update files including Win SDK headers to instead use the version installed by Visual Studio Installer
3) Update INSTALL.md
Note: this commit does not enforce using a specific version of the Windows SDK, but does everything needed to use the locally installed Windows SDK instead of files distributed with the source code to enforce using a particular version.
Users attempting to build the beta branch with GCC 12, 13 or 14 have a failure here due to the std::uint_8 data type.
The reason I changed it to an unsigned instead of including <cstdint> is because behavior on versions of GCC 12 and up were not consistent. I changed it to an unsigned because all versions of GCC were happy with that.
bApproximate is left over from long ago when the method to retrieve the system time might be 32-bit only or need correction. This is no longer needed, and already commented out of several sections of the sm5.1 base code. It can't be removed all at once just by deleting every instance of bApproximate, because it often refers to pointers that go elsewhere. so, this is the first part of a multi-stage removal process.
Other changes: remove samplerate() macro from RageSound, change some implicit casts to explicit.
Implements a static boolean to track the CheckGameLoopTimerSkips preference, so that it isn't calling PREFSMAN via CheckGameLoopTimerSkips in a tight loop. Since this setting is rarely used, and isn't expected to be changed while the game is open, it doesn't need to be continuously checked.
Reduce the input device check from every 500 frames to every 255 frames by way of replacing the modulo 500 with a wrapping uint8_t. A bit faster reaction during device plug-in is nice, and using a simple pre-increment instead of doing a modulo is a little more efficient.
Both come out to the same amount of target latency (as does 32x256, etc) however RageSoundDriver.h defines samples_per_block as 512, so this aims to have chunksize_frames equal 512.
It also defines a constant to define the quantity of buffers so it's not hardcoded in various places and puts the variables in an anonymous namespace.
The warning inside the loop makes the log too messy and is too much of a performance hit on very low end hardware.
I'm changing it to remove the mid-loop logging and only return a logged warning on a failure.
gluGetString, gluBuild2DMipmaps, and gluErrorString are all functions from the GLU library, which is not part of OpenGL.
This lets the game run without libGLU1 (or whatever it's called on a given distro).
Update README.md
