From 051424f196b5e9791d0e9c20fc06ea59fcb173ca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Camilla=20L=C3=B6wy?= <elmindreda@elmindreda.org>
Date: Mon, 20 May 2019 16:18:23 +0200
Subject: [PATCH] WGL: Add extension function macro aliases

This should have been done when the WGL extension members were moved
from the context struct to the library struct.

(cherry picked from commit 22a6c02a4c35752a0bf9d58b6bad5151e5006eea)
---
 src/wgl_context.c | 21 ++++++++++-----------
 src/wgl_context.h |  6 ++++++
 2 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/src/wgl_context.c b/src/wgl_context.c
index 03ccf2be..fe505243 100644
--- a/src/wgl_context.c
+++ b/src/wgl_context.c
@@ -77,8 +77,8 @@ static int choosePixelFormat(_GLFWwindow* window,
     {
         const int attrib = WGL_NUMBER_PIXEL_FORMATS_ARB;
 
-        if (!_glfw.wgl.GetPixelFormatAttribivARB(window->context.wgl.dc,
-                                                 1, 0, 1, &attrib, &nativeCount))
+        if (!wglGetPixelFormatAttribivARB(window->context.wgl.dc,
+                                          1, 0, 1, &attrib, &nativeCount))
         {
             _glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
                                  "WGL: Failed to retrieve pixel format attribute");
@@ -141,10 +141,10 @@ static int choosePixelFormat(_GLFWwindow* window,
         {
             // Get pixel format attributes through "modern" extension
 
-            if (!_glfw.wgl.GetPixelFormatAttribivARB(window->context.wgl.dc,
-                                                     pixelFormat, 0,
-                                                     attribCount,
-                                                     attribs, values))
+            if (!wglGetPixelFormatAttribivARB(window->context.wgl.dc,
+                                              pixelFormat, 0,
+                                              attribCount,
+                                              attribs, values))
             {
                 _glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
                                     "WGL: Failed to retrieve pixel format attributes");
@@ -362,7 +362,7 @@ static void swapIntervalWGL(int interval)
     }
 
     if (_glfw.wgl.EXT_swap_control)
-        _glfw.wgl.SwapIntervalEXT(interval);
+        wglSwapIntervalEXT(interval);
 }
 
 static int extensionSupportedWGL(const char* extension)
@@ -370,9 +370,9 @@ static int extensionSupportedWGL(const char* extension)
     const char* extensions = NULL;
 
     if (_glfw.wgl.GetExtensionsStringARB)
-        extensions = _glfw.wgl.GetExtensionsStringARB(wglGetCurrentDC());
+        extensions = wglGetExtensionsStringARB(wglGetCurrentDC());
     else if (_glfw.wgl.GetExtensionsStringEXT)
-        extensions = _glfw.wgl.GetExtensionsStringEXT();
+        extensions = wglGetExtensionsStringEXT();
 
     if (!extensions)
         return GLFW_FALSE;
@@ -695,8 +695,7 @@ GLFWbool _glfwCreateContextWGL(_GLFWwindow* window,
         setAttrib(0, 0);
 
         window->context.wgl.handle =
-            _glfw.wgl.CreateContextAttribsARB(window->context.wgl.dc,
-                                              share, attribs);
+            wglCreateContextAttribsARB(window->context.wgl.dc, share, attribs);
         if (!window->context.wgl.handle)
         {
             const DWORD error = GetLastError();
diff --git a/src/wgl_context.h b/src/wgl_context.h
index 26f33227..d9821188 100644
--- a/src/wgl_context.h
+++ b/src/wgl_context.h
@@ -76,11 +76,17 @@
 #define ERROR_INVALID_PROFILE_ARB 0x2096
 #define ERROR_INCOMPATIBLE_DEVICE_CONTEXTS_ARB 0x2054
 
+// WGL extension pointer typedefs
 typedef BOOL (WINAPI * PFNWGLSWAPINTERVALEXTPROC)(int);
 typedef BOOL (WINAPI * PFNWGLGETPIXELFORMATATTRIBIVARBPROC)(HDC,int,int,UINT,const int*,int*);
 typedef const char* (WINAPI * PFNWGLGETEXTENSIONSSTRINGEXTPROC)(void);
 typedef const char* (WINAPI * PFNWGLGETEXTENSIONSSTRINGARBPROC)(HDC);
 typedef HGLRC (WINAPI * PFNWGLCREATECONTEXTATTRIBSARBPROC)(HDC,HGLRC,const int*);
+#define wglSwapIntervalEXT _glfw.wgl.SwapIntervalEXT
+#define wglGetPixelFormatAttribivARB _glfw.wgl.GetPixelFormatAttribivARB
+#define wglGetExtensionsStringEXT _glfw.wgl.GetExtensionsStringEXT
+#define wglGetExtensionsStringARB _glfw.wgl.GetExtensionsStringARB
+#define wglCreateContextAttribsARB _glfw.wgl.CreateContextAttribsARB
 
 // opengl32.dll function pointer typedefs
 typedef HGLRC (WINAPI * PFN_wglCreateContext)(HDC);