dwrite: Fetch all glyphs at once instead of locking/unlocking for every glyph.

dlls/dwrite/dwrite_private.h

@@ -212,7 +212,7 @@ extern BOOL freetype_is_monospaced(IDWriteFontFace2*) DECLSPEC_HIDDEN;
 extern HRESULT freetype_get_glyphrun_outline(IDWriteFontFace2*,FLOAT,UINT16 const*,FLOAT const*, DWRITE_GLYPH_OFFSET const*,
     UINT32,BOOL,IDWriteGeometrySink*) DECLSPEC_HIDDEN;
 extern UINT16 freetype_get_glyphcount(IDWriteFontFace2*) DECLSPEC_HIDDEN;
-extern UINT16 freetype_get_glyphindex(IDWriteFontFace2*,UINT32,INT) DECLSPEC_HIDDEN;
+extern void freetype_get_glyphs(IDWriteFontFace2*,INT,UINT32 const*,UINT32,UINT16*) DECLSPEC_HIDDEN;
 extern BOOL freetype_has_kerning_pairs(IDWriteFontFace2*) DECLSPEC_HIDDEN;
 extern INT32 freetype_get_kerning_pair_adjustment(IDWriteFontFace2*,UINT16,UINT16) DECLSPEC_HIDDEN;
 extern void freetype_get_glyph_bbox(struct dwrite_glyphbitmap*) DECLSPEC_HIDDEN;

dlls/dwrite/font.c

@@ -576,7 +576,6 @@ static HRESULT WINAPI dwritefontface_GetGlyphIndices(IDWriteFontFace2 *iface, UI
     UINT32 count, UINT16 *glyph_indices)
 {
     struct dwrite_fontface *This = impl_from_IDWriteFontFace2(iface);
-    UINT32 i;
 
     TRACE("(%p)->(%p %u %p)\n", This, codepoints, count, glyph_indices);
 
@@ -588,9 +587,7 @@ static HRESULT WINAPI dwritefontface_GetGlyphIndices(IDWriteFontFace2 *iface, UI
         return E_INVALIDARG;
     }
 
-    for (i = 0; i < count; i++)
-        glyph_indices[i] = freetype_get_glyphindex(iface, codepoints[i], This->charmap);
-
+    freetype_get_glyphs(iface, This->charmap, codepoints, count, glyph_indices);
     return S_OK;
 }
 

dlls/dwrite/freetype.c

@@ -493,23 +493,25 @@ UINT16 freetype_get_glyphcount(IDWriteFontFace2 *fontface)
     return count;
 }
 
-UINT16 freetype_get_glyphindex(IDWriteFontFace2 *fontface, UINT32 codepoint, INT charmap)
+void freetype_get_glyphs(IDWriteFontFace2 *fontface, INT charmap, UINT32 const *codepoints, UINT32 count,
+    UINT16 *glyphs)
 {
-    UINT16 glyph;
+    UINT32 i;
 
     EnterCriticalSection(&freetype_cs);
+    for (i = 0; i < count; i++) {
         if (charmap == -1)
-        glyph = pFTC_CMapCache_Lookup(cmap_cache, fontface, charmap, codepoint);
+            glyphs[i] = pFTC_CMapCache_Lookup(cmap_cache, fontface, charmap, codepoints[i]);
         else {
+            UINT32 codepoint = codepoints[i];
             /* special handling for symbol fonts */
             if (codepoint < 0x100) codepoint += 0xf000;
-        glyph = pFTC_CMapCache_Lookup(cmap_cache, fontface, charmap, codepoint);
-        if (!glyph)
-            glyph = pFTC_CMapCache_Lookup(cmap_cache, fontface, charmap, codepoint - 0xf000);
+            glyphs[i] = pFTC_CMapCache_Lookup(cmap_cache, fontface, charmap, codepoint);
+            if (!glyphs[i])
+                glyphs[i] = pFTC_CMapCache_Lookup(cmap_cache, fontface, charmap, codepoint - 0xf000);
+        }
     }
     LeaveCriticalSection(&freetype_cs);
-
-    return glyph;
 }
 
 BOOL freetype_has_kerning_pairs(IDWriteFontFace2 *fontface)
@@ -836,9 +838,10 @@ UINT16 freetype_get_glyphcount(IDWriteFontFace2 *fontface)
     return 0;
 }
 
-UINT16 freetype_get_glyphindex(IDWriteFontFace2 *fontface, UINT32 codepoint, INT charmap)
+void freetype_get_glyphs(IDWriteFontFace2 *fontface, INT charmap, UINT32 const *codepoints, UINT32 count,
+    UINT16 *glyphs)
 {
-    return 0;
+    memset(glyphs, 0, count * sizeof(*glyphs));
 }
 
 BOOL freetype_has_kerning_pairs(IDWriteFontFace2 *fontface)