Implement text rendering with NVPR

src/ports/SkFontHost_win.cpp

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkAdvancedTypefaceMetrics.h"
 #include "SkBase64.h"
@@ skipping 1688 matching lines @@
     // It has been verified that this does not involve a buffer overrun.
     if (GDI_ERROR == total_size || total_size > BUFFERSIZE) {
         // GDI_ERROR because the BUFFERSIZE was too small, or because the data was not accessible.
         // When the data is not accessable GetGlyphOutlineW fails rather quickly,
         // so just try to get the size. If that fails then ensure the data is accessible.
         total_size = GetGlyphOutlineW(fDDC, glyph.fID, flags, &gm, 0, NULL, &fMat22);
         if (GDI_ERROR == total_size) {
             LogFontTypeface::EnsureAccessible(this->getTypeface());
             total_size = GetGlyphOutlineW(fDDC, glyph.fID, flags, &gm, 0, NULL, &fMat22);
             if (GDI_ERROR == total_size) {
-                SkASSERT(false);
+                // GetGlyphOutlineW is known to fail for some characters, such as spaces.
+                // In these cases, just return that the glyph does not have a shape.
                 return 0;
             }
         }
 
         glyphbuf->reset(total_size);
 
         DWORD ret = GetGlyphOutlineW(fDDC, glyph.fID, flags, &gm, total_size, glyphbuf->get(), &fMat22);
         if (GDI_ERROR == ret) {
             LogFontTypeface::EnsureAccessible(this->getTypeface());
             ret = GetGlyphOutlineW(fDDC, glyph.fID, flags, &gm, total_size, glyphbuf->get(), &fMat22);
@@ skipping 898 matching lines @@
 
 private:
     SkTDArray<ENUMLOGFONTEX> fLogFontArray;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkFontMgr* SkFontMgr_New_GDI() {
     return SkNEW(SkFontMgrGDI);
 }