Glyph positions maintain 32 bit integer part.

src/device/xps/SkXPSDevice.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 "SkTypes.h"
 
 #ifndef UNICODE
@@ skipping 2039 matching lines @@
     /** [in] Advance width and offsets for glyphs measured in
     hundredths of the font em size (XPS Spec 5.1.3). */
     FLOAT centemPerUnit;
     /** [in,out] The accumulated glyphs used in the current typeface. */
     SkBitSet* glyphUse;
     /** [out] The glyphs to draw. */
     SkTDArray<XPS_GLYPH_INDEX> xpsGlyphs;
 };
 
 static void xps_draw_1_glyph(const SkDraw1Glyph& state,
-                             SkFixed x, SkFixed y,
+                             Sk48Dot16 fx, Sk48Dot16 fy,
                              const SkGlyph& skGlyph) {
     SkASSERT(skGlyph.fWidth > 0 && skGlyph.fHeight > 0);
 
     SkXPSDrawProcs* procs = static_cast<SkXPSDrawProcs*>(state.fDraw->fProcs);
 
     //Draw pre-adds half the sampling frequency for floor rounding.
-    x -= state.fHalfSampleX;
-    y -= state.fHalfSampleY;
+    SkScalar x = Sk48Dot16ToScalar(fx) - state.fHalfSampleX;
+    SkScalar y = Sk48Dot16ToScalar(fy) - state.fHalfSampleY;
 
     XPS_GLYPH_INDEX* xpsGlyph = procs->xpsGlyphs.append();
     uint16_t glyphID = skGlyph.getGlyphID();
     procs->glyphUse->setBit(glyphID, true);
     xpsGlyph->index = glyphID;
     if (1 == procs->xpsGlyphs.count()) {
         xpsGlyph->advanceWidth = 0.0f;
-        xpsGlyph->horizontalOffset = SkFixedToFloat(x) * procs->centemPerUnit;
-        xpsGlyph->verticalOffset = SkFixedToFloat(y) * -procs->centemPerUnit;
+        xpsGlyph->horizontalOffset = SkScalarToFloat(x) * procs->centemPerUnit;
+        xpsGlyph->verticalOffset = SkScalarToFloat(y) * -procs->centemPerUnit;
     } else {
         const XPS_GLYPH_INDEX& first = procs->xpsGlyphs[0];
         xpsGlyph->advanceWidth = 0.0f;
-        xpsGlyph->horizontalOffset = (SkFixedToFloat(x) * procs->centemPerUnit)
+        xpsGlyph->horizontalOffset = (SkScalarToFloat(x) * procs->centemPerUnit)
                                      - first.horizontalOffset;
-        xpsGlyph->verticalOffset = (SkFixedToFloat(y) * -procs->centemPerUnit)
+        xpsGlyph->verticalOffset = (SkScalarToFloat(y) * -procs->centemPerUnit)
                                    - first.verticalOffset;
     }
 }
 
 static void text_draw_init(const SkPaint& paint,
                            const void* text, size_t byteLength,
                            SkBitSet& glyphsUsed,
                            SkDraw& myDraw, SkXPSDrawProcs& procs) {
     procs.fD1GProc = xps_draw_1_glyph;
     int numGlyphGuess;
@@ skipping 184 matching lines @@
              IID_PPV_ARGS(&this->fXpsFactory)),
          "Could not create factory for layer.");
 
     HRVM(this->fXpsFactory->CreateCanvas(&this->fCurrentXpsCanvas),
          "Could not create canvas for layer.");
 }
 
 bool SkXPSDevice::allowImageFilter(const SkImageFilter*) {
     return false;
 }