raze-gles/source/glad/src/glad_wgl.c
hendricks266 a0c87b5fda Update glad to 0.1.25
Includes https://github.com/Dav1dde/glad/pull/140

git-svn-id: https://svn.eduke32.com/eduke32@6948 1a8010ca-5511-0410-912e-c29ae57300e0
2018-07-23 02:55:49 +00:00

270 lines
8 KiB
C

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