Use per-typeface sets of glyphs for nvpr text

src/gpu/GrContext.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 "GrContext.h"
@@ skipping 1908 matching lines @@
     if (path && path->isEqualTo(inPath, stroke)) {
         path->ref();
     } else {
         path = fGpu->createPath(inPath, stroke);
         fResourceCache->purgeAsNeeded(1, path->gpuMemorySize());
         fResourceCache->addResource(resourceKey, path);
     }
     return path;
 }
 
+GrPathRange* GrContext::createGlyphs(const SkTypeface* typeface,
+                                     const SkDescriptor* desc,
+                                     const SkStrokeRec& stroke) {
+    static const GrCacheID::Domain gGlyphsDomain = GrCacheID::GenerateDomain();
+
+    SkASSERT(fGpu->caps()->pathRenderingSupport());
+
+    GrCacheID::Key key;
+    uint64_t* keyData = key.fData64;
+    keyData[0] = desc ? desc->getChecksum() : 0;
+    keyData[0] = (keyData[0] << 32) | (typeface ? typeface->uniqueID() : 0);
+    keyData[1] = GrPath::ComputeStrokeKey(stroke);
+    GrResourceKey resourceKey = GrResourceKey(GrCacheID(gGlyphsDomain, key),
+                                              GrPathRange::resourceType(), 0);
+
+    GrPathRange* glyphs = static_cast<GrPathRange*>(fResourceCache->find(resourceKey));
+    if (glyphs && (NULL == desc || glyphs->isEqualTo(*desc))) {
+        glyphs->ref();
+    } else {
+        glyphs = fGpu->createGlyphs(typeface, desc, stroke);
+        fResourceCache->purgeAsNeeded(1, glyphs->gpuMemorySize());
+        fResourceCache->addResource(resourceKey, glyphs);
+    }
+    return glyphs;
+}
+
 void GrContext::addResourceToCache(const GrResourceKey& resourceKey, GrGpuResource* resource) {
     fResourceCache->purgeAsNeeded(1, resource->gpuMemorySize());
     fResourceCache->addResource(resourceKey, resource);
 }
 
 GrGpuResource* GrContext::findAndRefCachedResource(const GrResourceKey& resourceKey) {
     GrGpuResource* resource = fResourceCache->find(resourceKey);
     SkSafeRef(resource);
     return resource;
 }
@@ skipping 11 matching lines @@
         fDrawBuffer->removeGpuTraceMarker(marker);
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 #if GR_CACHE_STATS
 void GrContext::printCacheStats() const {
     fResourceCache->printStats();
 }
 #endif