mirror of
https://github.com/Relintai/sdl2_frt.git
synced 2024-12-16 11:06:49 +01:00
Simple Directmedia Layer
40b571c91e
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. |
||
|---|---|---|
| acinclude | ||
| android-project | ||
| build-scripts | ||
| cmake | ||
| debian | ||
| docs | ||
| include | ||
| src | ||
| test | ||
| VisualC | ||
| VisualC-WinRT | ||
| visualtest | ||
| Xcode | ||
| Xcode-iOS | ||
| .hgignore | ||
| Android.mk | ||
| autogen.sh | ||
| BUGS.txt | ||
| cmake_uninstall.cmake.in | ||
| CMakeLists.txt | ||
| configure | ||
| configure.in | ||
| COPYING.txt | ||
| CREDITS.txt | ||
| INSTALL.txt | ||
| Makefile.in | ||
| Makefile.minimal | ||
| Makefile.pandora | ||
| Makefile.psp | ||
| Makefile.wiz | ||
| README-SDL.txt | ||
| README.txt | ||
| sdl2-config.cmake.in | ||
| sdl2-config.in | ||
| sdl2.m4 | ||
| sdl2.pc.in | ||
| SDL2.spec.in | ||
| TODO.txt | ||
| VisualC.html | ||
| WhatsNew.txt | ||
Simple DirectMedia Layer
(SDL)
Version 2.0
---
http://www.libsdl.org/
Simple DirectMedia Layer is a cross-platform development library designed
to provide low level access to audio, keyboard, mouse, joystick, and graphics
hardware via OpenGL and Direct3D. It is used by video playback software,
emulators, and popular games including Valve's award winning catalog
and many Humble Bundle games.
More extensive documentation is available in the docs directory, starting
with README.md
Enjoy!
Sam Lantinga (slouken@libsdl.org)