Fixed a case where partial trigger pull could be bound to another button
There is a fundamental problem not resolved by this commit:
Some controllers have axes (triggers, pedals, etc.) that don't start at zero, but we're guaranteed that if we get a value that it's correct. For these controllers, the current code works, where we take the first value we get and use that as the zero point and generate axis motion starting from that point on.
Other controllers have digital axes (D-pad) that assume a zero starting point, and the first value we get is the min or max axis value when the D-pad is moved. For these controllers, the current code thinks that the zero point is the axis value after the D-pad motion and this doesn't work.
My hypothesis is that the first class of devices is more common and that we should solve for that, and add an exception to SDL_JoystickAxesCenteredAtZero() as needed for the second class of devices.
Ciro Santilli
GCC 6, Ubuntu 16.10, cd test; ./configure; make
/bin/sh config.status Makefile
config.status: creating Makefile
gcc -o loopwave loopwave.c -g -O2 -D_REENTRANT -I/usr/include/SDL2 -DHAVE_OPENGLES2 -DHAVE_OPENGL -DHAVE_SDL_TTF -g -lSDL2_test -lSDL2
gcc -o testatomic testatomic.c -g -O2 -D_REENTRANT -I/usr/include/SDL2 -DHAVE_OPENGLES2 -DHAVE_OPENGL -DHAVE_SDL_TTF -g -lSDL2_test -lSDL2
In file included from /usr/include/SDL2/SDL_main.h:25:0,
from /usr/include/SDL2/SDL.h:32,
from testatomic.c:14:
/usr/include/SDL2/SDL_stdinc.h:261:20: error: variably modified ?SDL_dummy_size? at file scope
typedef int SDL_dummy_ ## name[(x) * 2 - 1]
^
testatomic.c:106:1: note: in expansion of macro ?SDL_COMPILE_TIME_ASSERT?
SDL_COMPILE_TIME_ASSERT(size, CountTo>0); /* check for rollover */
^~~~~~~~~~~~~~~~~~~~~~~
Makefile:114: recipe for target 'testatomic' failed
make: *** [testatomic] Error 1
If I remove the line SDL_COMPILE_TIME_ASSERT(size, CountTo>0); /* check for rollover */ it works, lazy to figure out the best way to do this.
Mark Pizzolato
On Windows with Visual Studio, when building SDL as a static library using the x86 (32bit) mode, several intrinsic operations are implemented in code in SDL_stdlib.c.
One of these, _allshr() is not properly implemented and fails for some input. As a result, some operations on 64bit data elements (long long) don't always work.
I classified this bug as a blocker since things absolutely don't work when the affected code is invoked. The affected code is only invoked when SDL is compiled in x86 mode on Visual Studio when building a SDL as a static library. This build environment isn't common, and hence the bug hasn't been noticed previously.
I reopened#2537 and mentioned this problem and provided a fix. That fix is provided again here along with test code which could be added to some of the SDL test code. This test code verifies that the x86 intrinsic routines produce the same results as the native x64 instructions which these routines emulate under the Microsoft compiler. The point of the tests is to make sure that Visual Studio x86 code produces the same results as Visual Studio x64 code. Some of the arguments (or boundary conditions) may produce different results on other compiler environments, so the tests really shouldn't be run on all compilers. The test driver only actually exercised code when the compiler defines _MSC_VER, so the driver can generically be invoked without issue.
Simon Hug
I'm proposing some changes to the IME test program test/testime.c. The patch includes support for the GNU Unifont hex file, making the SDL_ttf dependency optional. There were also one or two bugs that prevented the text and underline from showing up poperly.
Simon Hug
There's a call to the POSIX function random in test/testqsort.c. Naturally, Windows doesn't do that. The attached patch changes the call to the SDLtest framework random functions and adds some seed control.
Looking at SDLTest_RandomInitTime, I just want to say that 'srand((unsigned int)time(NULL)); a=rand(); srand(clock()); b=rand();' is an absolutely terrible way to initialize a seed on Windows because of its terrible LCG.
Simon Hug
The two tests test/testaudioinfo.c and test/testaudiohotplug.c are missing error checking when they call SDL_GetAudioDeviceName. This function can return NULL which the tests pass straight to SDL_Log.
This allows an app to know when a set of drops are coming in a grouping of
some sort (for example, a user selected multiple files and dropped them all
on the window with a single drag), and when that set is complete.
This also adds a window ID to the drop events, so the app can determine to
which window a given drop was delivered. For application-level drops (for
example, you launched an app by dropping a file on its icon), the window ID
will be zero.
The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly
uninitialized data structure if loading the library first failed. A later try to
use EGL then skipped initialization and assumed it was previously successful
because the data structure now already existed. This led to at least one crash
in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was
dereferenced to make a call to eglBindAPI().
