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Diffstat (limited to 'ext/glfw/src/platform.c')
| -rw-r--r-- | ext/glfw/src/platform.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/ext/glfw/src/platform.c b/ext/glfw/src/platform.c new file mode 100644 index 0000000..9ca6496 --- /dev/null +++ b/ext/glfw/src/platform.c @@ -0,0 +1,212 @@ +//======================================================================== +// GLFW 3.5 - www.glfw.org +//------------------------------------------------------------------------ +// Copyright (c) 2002-2006 Marcus Geelnard +// Copyright (c) 2006-2018 Camilla Löwy <elmindreda@glfw.org> +// +// This software is provided 'as-is', without any express or implied +// warranty. In no event will the authors be held liable for any damages +// arising from the use of this software. +// +// Permission is granted to anyone to use this software for any purpose, +// including commercial applications, and to alter it and redistribute it +// freely, subject to the following restrictions: +// +// 1. The origin of this software must not be misrepresented; you must not +// claim that you wrote the original software. If you use this software +// in a product, an acknowledgment in the product documentation would +// be appreciated but is not required. +// +// 2. Altered source versions must be plainly marked as such, and must not +// be misrepresented as being the original software. +// +// 3. This notice may not be removed or altered from any source +// distribution. +// +//======================================================================== + +#include "internal.h" + +#include <string.h> +#include <stdlib.h> + +// These construct a string literal from individual numeric constants +#define _GLFW_CONCAT_VERSION(m, n, r) #m "." #n "." #r +#define _GLFW_MAKE_VERSION(m, n, r) _GLFW_CONCAT_VERSION(m, n, r) + +////////////////////////////////////////////////////////////////////////// +////// GLFW internal API ////// +////////////////////////////////////////////////////////////////////////// + +static const struct +{ + int ID; + GLFWbool (*connect)(int,_GLFWplatform*); +} supportedPlatforms[] = +{ +#if defined(_GLFW_WIN32) + { GLFW_PLATFORM_WIN32, _glfwConnectWin32 }, +#endif +#if defined(_GLFW_COCOA) + { GLFW_PLATFORM_COCOA, _glfwConnectCocoa }, +#endif +#if defined(_GLFW_WAYLAND) + { GLFW_PLATFORM_WAYLAND, _glfwConnectWayland }, +#endif +#if defined(_GLFW_X11) + { GLFW_PLATFORM_X11, _glfwConnectX11 }, +#endif +}; + +GLFWbool _glfwSelectPlatform(int desiredID, _GLFWplatform* platform) +{ + const size_t count = sizeof(supportedPlatforms) / sizeof(supportedPlatforms[0]); + size_t i; + + if (desiredID != GLFW_ANY_PLATFORM && + desiredID != GLFW_PLATFORM_WIN32 && + desiredID != GLFW_PLATFORM_COCOA && + desiredID != GLFW_PLATFORM_WAYLAND && + desiredID != GLFW_PLATFORM_X11 && + desiredID != GLFW_PLATFORM_NULL) + { + _glfwInputError(GLFW_INVALID_ENUM, "Invalid platform ID 0x%08X", desiredID); + return GLFW_FALSE; + } + + // Only allow the Null platform if specifically requested + if (desiredID == GLFW_PLATFORM_NULL) + return _glfwConnectNull(desiredID, platform); + else if (count == 0) + { + _glfwInputError(GLFW_PLATFORM_UNAVAILABLE, "This binary only supports the Null platform"); + return GLFW_FALSE; + } + +#if defined(_GLFW_WAYLAND) && defined(_GLFW_X11) + if (desiredID == GLFW_ANY_PLATFORM) + { + const char* const session = getenv("XDG_SESSION_TYPE"); + if (session) + { + // Only follow XDG_SESSION_TYPE if it is set correctly and the + // environment looks plausble; otherwise fall back to detection + if (strcmp(session, "wayland") == 0 && getenv("WAYLAND_DISPLAY")) + desiredID = GLFW_PLATFORM_WAYLAND; + else if (strcmp(session, "x11") == 0 && getenv("DISPLAY")) + desiredID = GLFW_PLATFORM_X11; + } + } +#endif + + if (desiredID == GLFW_ANY_PLATFORM) + { + // If there is exactly one platform available for auto-selection, let it emit the + // error on failure as the platform-specific error description may be more helpful + if (count == 1) + return supportedPlatforms[0].connect(supportedPlatforms[0].ID, platform); + + for (i = 0; i < count; i++) + { + if (supportedPlatforms[i].connect(desiredID, platform)) + return GLFW_TRUE; + } + + _glfwInputError(GLFW_PLATFORM_UNAVAILABLE, "Failed to detect any supported platform"); + } + else + { + for (i = 0; i < count; i++) + { + if (supportedPlatforms[i].ID == desiredID) + return supportedPlatforms[i].connect(desiredID, platform); + } + + _glfwInputError(GLFW_PLATFORM_UNAVAILABLE, "The requested platform is not supported"); + } + + return GLFW_FALSE; +} + +////////////////////////////////////////////////////////////////////////// +////// GLFW public API ////// +////////////////////////////////////////////////////////////////////////// + +GLFWAPI int glfwGetPlatform(void) +{ + _GLFW_REQUIRE_INIT_OR_RETURN(0); + return _glfw.platform.platformID; +} + +GLFWAPI int glfwPlatformSupported(int platformID) +{ + const size_t count = sizeof(supportedPlatforms) / sizeof(supportedPlatforms[0]); + size_t i; + + if (platformID != GLFW_PLATFORM_WIN32 && + platformID != GLFW_PLATFORM_COCOA && + platformID != GLFW_PLATFORM_WAYLAND && + platformID != GLFW_PLATFORM_X11 && + platformID != GLFW_PLATFORM_NULL) + { + _glfwInputError(GLFW_INVALID_ENUM, "Invalid platform ID 0x%08X", platformID); + return GLFW_FALSE; + } + + if (platformID == GLFW_PLATFORM_NULL) + return GLFW_TRUE; + + for (i = 0; i < count; i++) + { + if (platformID == supportedPlatforms[i].ID) + return GLFW_TRUE; + } + + return GLFW_FALSE; +} + +GLFWAPI const char* glfwGetVersionString(void) +{ + return _GLFW_MAKE_VERSION(GLFW_VERSION_MAJOR, + GLFW_VERSION_MINOR, + GLFW_VERSION_REVISION) +#if defined(_GLFW_WIN32) + " Win32 WGL" +#endif +#if defined(_GLFW_COCOA) + " Cocoa NSGL" +#endif +#if defined(_GLFW_WAYLAND) + " Wayland" +#endif +#if defined(_GLFW_X11) + " X11 GLX" +#endif + " Null" + " EGL" + " OSMesa" +#if defined(__MINGW64_VERSION_MAJOR) + " MinGW-w64" +#elif defined(__MINGW32__) + " MinGW" +#elif defined(_MSC_VER) + " VisualC" +#endif +#if defined(_GLFW_USE_HYBRID_HPG) || defined(_GLFW_USE_OPTIMUS_HPG) + " hybrid-GPU" +#endif +#if defined(_POSIX_MONOTONIC_CLOCK) + " monotonic" +#endif +#if defined(_GLFW_BUILD_DLL) +#if defined(_WIN32) + " DLL" +#elif defined(__APPLE__) + " dynamic" +#else + " shared" +#endif +#endif + ; +} + |