mirror of https://github.com/ZDoom/raze-gles.git
271 lines
8.0 KiB
C
271 lines
8.0 KiB
C
/*
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WGL loader generated by glad 0.1.25 on Mon Jul 23 02:57:35 2018.
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Language/Generator: C/C++
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Specification: wgl
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APIs: wgl=1.0
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Profile: -
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Extensions:
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WGL_ARB_create_context,
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WGL_ARB_create_context_profile,
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WGL_ARB_extensions_string,
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WGL_ARB_pixel_format,
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WGL_EXT_extensions_string,
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WGL_EXT_swap_control
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Loader: True
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Local files: False
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Omit khrplatform: False
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Commandline:
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--api="wgl=1.0" --generator="c" --spec="wgl" --extensions="WGL_ARB_create_context,WGL_ARB_create_context_profile,WGL_ARB_extensions_string,WGL_ARB_pixel_format,WGL_EXT_extensions_string,WGL_EXT_swap_control"
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Online:
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http://glad.dav1d.de/#language=c&specification=wgl&loader=on&api=wgl%3D1.0&extensions=WGL_ARB_create_context&extensions=WGL_ARB_create_context_profile&extensions=WGL_ARB_extensions_string&extensions=WGL_ARB_pixel_format&extensions=WGL_EXT_extensions_string&extensions=WGL_EXT_swap_control
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <glad/glad_wgl.h>
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static void* get_proc(const char *namez);
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#if defined(_WIN32) || defined(__CYGWIN__)
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#include <windows.h>
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static HMODULE libGL;
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typedef void* (APIENTRYP PFNWGLGETPROCADDRESSPROC_PRIVATE)(const char*);
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static PFNWGLGETPROCADDRESSPROC_PRIVATE gladGetProcAddressPtr;
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#ifdef _MSC_VER
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#ifdef __has_include
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#if __has_include(<winapifamily.h>)
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#define HAVE_WINAPIFAMILY 1
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#endif
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#elif _MSC_VER >= 1700 && !_USING_V110_SDK71_
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#define HAVE_WINAPIFAMILY 1
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#endif
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#endif
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#ifdef HAVE_WINAPIFAMILY
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#include <winapifamily.h>
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#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
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#define IS_UWP 1
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#endif
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#endif
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static
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int open_gl(void) {
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#ifndef IS_UWP
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libGL = LoadLibraryW(L"opengl32.dll");
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if(libGL != NULL) {
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void (* tmp)(void);
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tmp = (void(*)(void)) GetProcAddress(libGL, "wglGetProcAddress");
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gladGetProcAddressPtr = (PFNWGLGETPROCADDRESSPROC_PRIVATE) tmp;
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return gladGetProcAddressPtr != NULL;
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}
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#endif
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return 0;
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}
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static
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void close_gl(void) {
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if(libGL != NULL) {
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FreeLibrary((HMODULE) libGL);
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libGL = NULL;
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}
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}
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#else
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#include <dlfcn.h>
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static void* libGL;
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#ifndef __APPLE__
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typedef void* (APIENTRYP PFNGLXGETPROCADDRESSPROC_PRIVATE)(const char*);
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static PFNGLXGETPROCADDRESSPROC_PRIVATE gladGetProcAddressPtr;
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#endif
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static
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int open_gl(void) {
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#ifdef __APPLE__
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static const char *NAMES[] = {
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"../Frameworks/OpenGL.framework/OpenGL",
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"/Library/Frameworks/OpenGL.framework/OpenGL",
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"/System/Library/Frameworks/OpenGL.framework/OpenGL",
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"/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL"
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};
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#else
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static const char *NAMES[] = {"libGL.so.1", "libGL.so"};
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#endif
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unsigned int index = 0;
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for(index = 0; index < (sizeof(NAMES) / sizeof(NAMES[0])); index++) {
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libGL = dlopen(NAMES[index], RTLD_NOW | RTLD_GLOBAL);
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if(libGL != NULL) {
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#ifdef __APPLE__
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return 1;
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#else
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gladGetProcAddressPtr = (PFNGLXGETPROCADDRESSPROC_PRIVATE)dlsym(libGL,
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"glXGetProcAddressARB");
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return gladGetProcAddressPtr != NULL;
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#endif
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}
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}
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return 0;
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}
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static
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void close_gl(void) {
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if(libGL != NULL) {
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dlclose(libGL);
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libGL = NULL;
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}
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}
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#endif
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static
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void* get_proc(const char *namez) {
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void* result = NULL;
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if(libGL == NULL) return NULL;
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#ifndef __APPLE__
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if(gladGetProcAddressPtr != NULL) {
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result = gladGetProcAddressPtr(namez);
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}
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#endif
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if(result == NULL) {
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#if defined(_WIN32) || defined(__CYGWIN__)
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result = (void*)GetProcAddress((HMODULE) libGL, namez);
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#else
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result = dlsym(libGL, namez);
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#endif
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}
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return result;
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}
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int gladLoadWGL(HDC hdc) {
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int status = 0;
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if(open_gl()) {
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status = gladLoadWGLLoader((GLADloadproc)get_proc, hdc);
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close_gl();
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}
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return status;
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}
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static HDC GLADWGLhdc = (HDC)INVALID_HANDLE_VALUE;
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static int get_exts(void) {
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return 1;
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}
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static void free_exts(void) {
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return;
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}
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static int has_ext(const char *ext) {
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const char *terminator;
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const char *loc;
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const char *extensions;
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if(wglGetExtensionsStringEXT == NULL && wglGetExtensionsStringARB == NULL)
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return 0;
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if(wglGetExtensionsStringARB == NULL || GLADWGLhdc == INVALID_HANDLE_VALUE)
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extensions = wglGetExtensionsStringEXT();
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else
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extensions = wglGetExtensionsStringARB(GLADWGLhdc);
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if(extensions == NULL || ext == NULL)
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return 0;
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while(1) {
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loc = strstr(extensions, ext);
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if(loc == NULL)
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break;
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terminator = loc + strlen(ext);
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if((loc == extensions || *(loc - 1) == ' ') &&
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(*terminator == ' ' || *terminator == '\0'))
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{
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return 1;
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}
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extensions = terminator;
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}
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return 0;
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}
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int GLAD_WGL_VERSION_1_0;
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int GLAD_WGL_EXT_swap_control;
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int GLAD_WGL_ARB_pixel_format;
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int GLAD_WGL_ARB_create_context_profile;
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int GLAD_WGL_ARB_create_context;
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int GLAD_WGL_ARB_extensions_string;
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int GLAD_WGL_EXT_extensions_string;
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PFNWGLCREATECONTEXTATTRIBSARBPROC glad_wglCreateContextAttribsARB;
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PFNWGLGETEXTENSIONSSTRINGARBPROC glad_wglGetExtensionsStringARB;
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PFNWGLGETPIXELFORMATATTRIBIVARBPROC glad_wglGetPixelFormatAttribivARB;
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PFNWGLGETPIXELFORMATATTRIBFVARBPROC glad_wglGetPixelFormatAttribfvARB;
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PFNWGLCHOOSEPIXELFORMATARBPROC glad_wglChoosePixelFormatARB;
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PFNWGLGETEXTENSIONSSTRINGEXTPROC glad_wglGetExtensionsStringEXT;
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PFNWGLSWAPINTERVALEXTPROC glad_wglSwapIntervalEXT;
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PFNWGLGETSWAPINTERVALEXTPROC glad_wglGetSwapIntervalEXT;
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static void load_WGL_ARB_create_context(GLADloadproc load) {
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if(!GLAD_WGL_ARB_create_context) return;
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glad_wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)load("wglCreateContextAttribsARB");
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}
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static void load_WGL_ARB_extensions_string(GLADloadproc load) {
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if(!GLAD_WGL_ARB_extensions_string) return;
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glad_wglGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)load("wglGetExtensionsStringARB");
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}
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static void load_WGL_ARB_pixel_format(GLADloadproc load) {
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if(!GLAD_WGL_ARB_pixel_format) return;
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glad_wglGetPixelFormatAttribivARB = (PFNWGLGETPIXELFORMATATTRIBIVARBPROC)load("wglGetPixelFormatAttribivARB");
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glad_wglGetPixelFormatAttribfvARB = (PFNWGLGETPIXELFORMATATTRIBFVARBPROC)load("wglGetPixelFormatAttribfvARB");
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glad_wglChoosePixelFormatARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)load("wglChoosePixelFormatARB");
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}
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static void load_WGL_EXT_extensions_string(GLADloadproc load) {
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if(!GLAD_WGL_EXT_extensions_string) return;
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glad_wglGetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)load("wglGetExtensionsStringEXT");
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}
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static void load_WGL_EXT_swap_control(GLADloadproc load) {
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if(!GLAD_WGL_EXT_swap_control) return;
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glad_wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)load("wglSwapIntervalEXT");
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glad_wglGetSwapIntervalEXT = (PFNWGLGETSWAPINTERVALEXTPROC)load("wglGetSwapIntervalEXT");
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}
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static int find_extensionsWGL(void) {
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if (!get_exts()) return 0;
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GLAD_WGL_ARB_create_context = has_ext("WGL_ARB_create_context");
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GLAD_WGL_ARB_create_context_profile = has_ext("WGL_ARB_create_context_profile");
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GLAD_WGL_ARB_extensions_string = has_ext("WGL_ARB_extensions_string");
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GLAD_WGL_ARB_pixel_format = has_ext("WGL_ARB_pixel_format");
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GLAD_WGL_EXT_extensions_string = has_ext("WGL_EXT_extensions_string");
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GLAD_WGL_EXT_swap_control = has_ext("WGL_EXT_swap_control");
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free_exts();
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return 1;
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}
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static void find_coreWGL(HDC hdc) {
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GLADWGLhdc = hdc;
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}
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int gladLoadWGLLoader(GLADloadproc load, HDC hdc) {
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wglGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)load("wglGetExtensionsStringARB");
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wglGetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)load("wglGetExtensionsStringEXT");
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if(wglGetExtensionsStringARB == NULL && wglGetExtensionsStringEXT == NULL) return 0;
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find_coreWGL(hdc);
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if (!find_extensionsWGL()) return 0;
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load_WGL_ARB_create_context(load);
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load_WGL_ARB_extensions_string(load);
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load_WGL_ARB_pixel_format(load);
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load_WGL_EXT_extensions_string(load);
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load_WGL_EXT_swap_control(load);
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return 1;
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}
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