Modifying TextBlobCacheTest to use SkRandomScalerContext

tests/TextBlobCacheTest.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "sk_tool_utils.h"
 #include "SkCanvas.h"
 #include "SkPaint.h"
 #include "SkPoint.h"
 #include "SkTextBlob.h"
 #include "SkFontMgr.h"
 #include "SkGraphics.h"
 #include "SkSurface.h"
 #include "SkTypeface.h"
+#include "../src/fonts/SkRandomScalerContext.h"
 
 #ifdef SK_BUILD_FOR_WIN
     #include "SkTypeface_win.h"
 #endif
 
 #include "Test.h"
 
 #if SK_SUPPORT_GPU
 #include "GrContextFactory.h"
 
@@ skipping 11 matching lines @@
         for (int i = 0; i < blobs.count(); i++) {
             const SkTextBlob* blob = blobs[i].fBlob.get();
             const SkRect& bounds = blob->bounds();
             yOffset += SkScalarCeilToInt(bounds.height());
             SkPaint paint;
             canvas->drawTextBlob(blob, 0, SkIntToScalar(yOffset), paint);
         }
     }
 }
 
-// limit this just so we don't take too long to draw
-#define MAX_TOTAL_TEXT 4096
-#define MAX_CHAR 256
-#define MAX_FAMILIES 30
-
 static const int kWidth = 1024;
 static const int kHeight = 768;
 
 // This test hammers the GPU textblobcache and font atlas
-DEF_GPUTEST(TextBlobCache, reporter, factory) {
+static void text_blob_cache_inner(skiatest::Reporter* reporter, GrContextFactory* factory,
+                                  int maxTotalText, int maxGlyphID, int maxFamilies, bool normal) {
     // setup surface
     uint32_t flags = 0;
     SkSurfaceProps props(flags, SkSurfaceProps::kLegacyFontHost_InitType);
 
-    GrContext* ctx = factory->get(GrContextFactory::kNative_GLContextType);
+    // We don't typically actually draw with this unittest
+    GrContext* ctx = factory->get(GrContextFactory::kNull_GLContextType);
     SkImageInfo info = SkImageInfo::Make(kWidth, kHeight, kN32_SkColorType, kPremul_SkAlphaType);
     SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTarget(ctx, SkSurface::kNo_Budgeted, info,
                                                                0, &props));
     REPORTER_ASSERT(reporter, surface);
     if (!surface) {
         return;
     }
 
     SkCanvas* canvas = surface->getCanvas();
 
     SkAutoTUnref<SkFontMgr> fm(SkFontMgr::RefDefault());
 
-    int count = SkMin32(fm->countFamilies(), MAX_FAMILIES);
+    int count = SkMin32(fm->countFamilies(), maxFamilies);
 
     // make a ton of text
-    uint16_t text[MAX_TOTAL_TEXT];
-    for (int i = 0; i < MAX_TOTAL_TEXT; i++) {
-        text[i] = i % MAX_CHAR;
+    SkAutoTArray<uint16_t> text(maxTotalText);
+    for (int i = 0; i < maxTotalText; i++) {
+        text[i] = i % maxGlyphID;
     }
 
     // generate textblobs
     SkTArray<TextBlobWrapper> blobs;
     for (int i = 0; i < count; i++) {
         SkPaint paint;
         paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
         paint.setTextSize(48); // draw big glyphs to really stress the atlas
 
         SkString familyName;
         fm->getFamilyName(i, &familyName);
         SkAutoTUnref<SkFontStyleSet> set(fm->createStyleSet(i));
         for (int j = 0; j < set->count(); ++j) {
             SkFontStyle fs;
             set->getStyle(j, &fs, NULL);
 
-            SkSafeUnref(paint.setTypeface(set->createTypeface(j)));
+            // We use a typeface which randomy returns unexpected mask formats to fuzz
+            SkAutoTUnref<SkTypeface> orig(set->createTypeface(j));
+            if (normal) {
+                paint.setTypeface(orig);
+            } else {
+                SkAutoTUnref<SkTypeface> typeface(SkNEW_ARGS(SkRandomTypeface, (orig, paint, true)));
+                paint.setTypeface(typeface);
+            }
 
             SkTextBlobBuilder builder;
             for (int aa = 0; aa < 2; aa++) {
                 for (int subpixel = 0; subpixel < 2; subpixel++) {
                     for (int lcd = 0; lcd < 2; lcd++) {
                         paint.setAntiAlias(SkToBool(aa));
                         paint.setSubpixelText(SkToBool(subpixel));
                         paint.setLCDRenderText(SkToBool(lcd));
+                        if (!SkToBool(lcd)) {
+                            paint.setTextSize(160);
+                        }
                         const SkTextBlobBuilder::RunBuffer& run = builder.allocRun(paint,
-                                                                                   MAX_TOTAL_TEXT,
+                                                                                   maxTotalText,
                                                                                    0, 0,
                                                                                    NULL);
-                        memcpy(run.glyphs, text, MAX_TOTAL_TEXT * sizeof(uint16_t));
+                        memcpy(run.glyphs, text.get(), maxTotalText * sizeof(uint16_t));
                     }
                 }
             }
             SkNEW_APPEND_TO_TARRAY(&blobs, TextBlobWrapper, (builder.build()));
         }
     }
 
     // create surface where LCD is impossible
     info = SkImageInfo::MakeN32Premul(kWidth, kHeight);
     SkSurfaceProps propsNoLCD(0, kUnknown_SkPixelGeometry);
@@ skipping 13 matching lines @@
     ctx->freeGpuResources();
     draw(canvas, 1, blobs);
 
     ctx->freeGpuResources();
     draw(canvasNoLCD, 1, blobs);
 
     // test draw after abandon
     ctx->abandonContext();
     draw(canvas, 1, blobs);
 }
+
+DEF_GPUTEST(TextBlobCache, reporter, factory) {
+    text_blob_cache_inner(reporter, factory, 4096, 256, 30, true);
+}
+
+DEF_GPUTEST(TextBlobAbnormal, reporter, factory) {
+#ifdef SK_BUILD_FOR_ANDROID
+    text_blob_cache_inner(reporter, factory, 32, 32, 1, false);
+#else
+    text_blob_cache_inner(reporter, factory, 256, 256, 1, false);
 #endif
+}
+#endif