Unify wgl context creation.

src/gpu/gl/win/SkNativeGLContext_win.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gl/SkNativeGLContext.h"
+#include "SkWGL.h"
 
 #define WIN32_LEAN_AND_MEAN
 #include <Windows.h>
 
 SkNativeGLContext::AutoContextRestore::AutoContextRestore() {
     fOldHGLRC = wglGetCurrentContext();
     fOldHDC = wglGetCurrentDC();
 }
 
 SkNativeGLContext::AutoContextRestore::~AutoContextRestore() {
@@ skipping 22 matching lines @@
         ReleaseDC(fWindow, fDeviceContext);
     }
     if (fWindow) {
         DestroyWindow(fWindow);
     }
 }
 
 const GrGLInterface* SkNativeGLContext::createGLContext() {
     HINSTANCE hInstance = (HINSTANCE)GetModuleHandle(NULL);
 
-    if (!gWC) {
-        WNDCLASS wc;
-        wc.cbClsExtra = 0;
-        wc.cbWndExtra = 0;
-        wc.hbrBackground = NULL;
-        wc.hCursor = LoadCursor(NULL, IDC_ARROW);
-        wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
-        wc.hInstance = hInstance;
-        wc.lpfnWndProc = (WNDPROC) DefWindowProc;
-        wc.lpszClassName = TEXT("Griffin");
-        wc.lpszMenuName = NULL;
-        wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
-
-        gWC = RegisterClass(&wc);
-        if (!gWC) {
-            SkDebugf("Could not register window class.\n");
-            return NULL;
-        }
-    }
-
-    if (!(fWindow = CreateWindow(TEXT("Griffin"),
-                                 TEXT("The Invisible Man"),
-                                 WS_OVERLAPPEDWINDOW,
-                                 0, 0, 1, 1,
-                                 NULL, NULL,
-                                 hInstance, NULL))) {
-        SkDebugf("Could not create window.\n");
-        return NULL;
-    }
 
     if (!(fDeviceContext = GetDC(fWindow))) {
         SkDebugf("Could not get device context.\n");
         this->destroyGLContext();
         return NULL;
     }
 
-    PIXELFORMATDESCRIPTOR pfd;
-    ZeroMemory(&pfd, sizeof(pfd));
-    pfd.nSize = sizeof(pfd);
-    pfd.nVersion = 1;
-    pfd.dwFlags = PFD_SUPPORT_OPENGL;
-    pfd.iPixelType = PFD_TYPE_RGBA;
-    pfd.cColorBits = 32;
-    pfd.cDepthBits = 0;
-    pfd.cStencilBits = 0;
-    pfd.iLayerType = PFD_MAIN_PLANE;
-
-    int pixelFormat = 0;
-    if (!(pixelFormat = ChoosePixelFormat(fDeviceContext, &pfd))) {
-        SkDebugf("No matching pixel format descriptor.\n");
-        this->destroyGLContext();
-        return NULL;
-    }
-
-    if (!SetPixelFormat(fDeviceContext, pixelFormat, &pfd)) {
-        SkDebugf("Could not set the pixel format %d.\n", pixelFormat);
-        this->destroyGLContext();
-        return NULL;
-    }
-
-    if (!(fGlRenderContext = wglCreateContext(fDeviceContext))) {
+    if (!(fGlRenderContext = SkCreateWGLContext(fDeviceContext, 0, true))) {
         SkDebugf("Could not create rendering context.\n");
         this->destroyGLContext();
         return NULL;
     }
 
     if (!(wglMakeCurrent(fDeviceContext, fGlRenderContext))) {
         SkDebugf("Could not set the context.\n");
         this->destroyGLContext();
         return NULL;
     }
     const GrGLInterface* interface = GrGLCreateNativeInterface();
     if (NULL == interface) {
         SkDebugf("Could not create GL interface.\n");
         this->destroyGLContext();
         return NULL;
     }
 
     return interface;
 }
 
 void SkNativeGLContext::makeCurrent() const {
     if (!wglMakeCurrent(fDeviceContext, fGlRenderContext)) {
         SkDebugf("Could not create rendering context.\n");
     }
 }