145 lines
4.6 KiB
C++
145 lines
4.6 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "sk_tool_utils.h"
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#include "SkCanvas.h"
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#include "SkPaint.h"
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#include "SkPoint.h"
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#include "SkTextBlob.h"
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#include "SkFontMgr.h"
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#include "SkGraphics.h"
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#include "SkSurface.h"
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#include "SkTypeface.h"
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#ifdef SK_BUILD_FOR_WIN
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#include "SkTypeface_win.h"
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#endif
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#include "Test.h"
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#if SK_SUPPORT_GPU
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#include "GrContextFactory.h"
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struct TextBlobWrapper {
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// This class assumes it 'owns' the textblob it wraps, and thus does not need to take a ref
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explicit TextBlobWrapper(const SkTextBlob* blob) : fBlob(blob) {}
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TextBlobWrapper(const TextBlobWrapper& blob) : fBlob(SkRef(blob.fBlob.get())) {}
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SkAutoTUnref<const SkTextBlob> fBlob;
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};
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static void draw(SkCanvas* canvas, int redraw, const SkTArray<TextBlobWrapper>& blobs) {
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int yOffset = 0;
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for (int r = 0; r < redraw; r++) {
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for (int i = 0; i < blobs.count(); i++) {
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const SkTextBlob* blob = blobs[i].fBlob.get();
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const SkRect& bounds = blob->bounds();
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yOffset += SkScalarCeilToInt(bounds.height());
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SkPaint paint;
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canvas->drawTextBlob(blob, 0, SkIntToScalar(yOffset), paint);
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}
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}
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}
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// limit this just so we don't take too long to draw
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#define MAX_TOTAL_TEXT 4096
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#define MAX_CHAR 256
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#define MAX_FAMILIES 30
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static const int kWidth = 1024;
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static const int kHeight = 768;
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// This test hammers the GPU textblobcache and font atlas
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DEF_GPUTEST(TextBlobCache, reporter, factory) {
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// setup surface
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uint32_t flags = 0;
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SkSurfaceProps props(flags, SkSurfaceProps::kLegacyFontHost_InitType);
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GrContext* ctx = factory->get(GrContextFactory::kNative_GLContextType);
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SkImageInfo info = SkImageInfo::Make(kWidth, kHeight, kN32_SkColorType, kPremul_SkAlphaType);
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SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTarget(ctx, SkSurface::kNo_Budgeted, info,
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0, &props));
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REPORTER_ASSERT(reporter, surface);
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if (!surface) {
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return;
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}
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SkCanvas* canvas = surface->getCanvas();
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SkAutoTUnref<SkFontMgr> fm(SkFontMgr::RefDefault());
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int count = SkMin32(fm->countFamilies(), MAX_FAMILIES);
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// make a ton of text
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uint16_t text[MAX_TOTAL_TEXT];
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for (int i = 0; i < MAX_TOTAL_TEXT; i++) {
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text[i] = i % MAX_CHAR;
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}
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// generate textblobs
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SkTArray<TextBlobWrapper> blobs;
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for (int i = 0; i < count; i++) {
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SkPaint paint;
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paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
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paint.setTextSize(48); // draw big glyphs to really stress the atlas
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SkString familyName;
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fm->getFamilyName(i, &familyName);
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SkAutoTUnref<SkFontStyleSet> set(fm->createStyleSet(i));
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for (int j = 0; j < set->count(); ++j) {
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SkFontStyle fs;
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set->getStyle(j, &fs, NULL);
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SkSafeUnref(paint.setTypeface(set->createTypeface(j)));
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SkTextBlobBuilder builder;
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for (int aa = 0; aa < 2; aa++) {
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for (int subpixel = 0; subpixel < 2; subpixel++) {
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for (int lcd = 0; lcd < 2; lcd++) {
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paint.setAntiAlias(SkToBool(aa));
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paint.setSubpixelText(SkToBool(subpixel));
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paint.setLCDRenderText(SkToBool(lcd));
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const SkTextBlobBuilder::RunBuffer& run = builder.allocRun(paint,
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MAX_TOTAL_TEXT,
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0, 0,
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NULL);
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memcpy(run.glyphs, text, MAX_TOTAL_TEXT * sizeof(uint16_t));
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}
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}
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}
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SkNEW_APPEND_TO_TARRAY(&blobs, TextBlobWrapper, (builder.build()));
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}
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}
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// create surface where LCD is impossible
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info = SkImageInfo::MakeN32Premul(kWidth, kHeight);
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SkSurfaceProps propsNoLCD(0, kUnknown_SkPixelGeometry);
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SkAutoTUnref<SkSurface> surfaceNoLCD(canvas->newSurface(info, &propsNoLCD));
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REPORTER_ASSERT(reporter, surface);
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if (!surface) {
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return;
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}
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SkCanvas* canvasNoLCD = surfaceNoLCD->getCanvas();
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// test redraw
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draw(canvas, 2, blobs);
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draw(canvasNoLCD, 2, blobs);
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// test draw after free
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ctx->freeGpuResources();
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draw(canvas, 1, blobs);
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ctx->freeGpuResources();
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draw(canvasNoLCD, 1, blobs);
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// test draw after abandon
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ctx->abandonContext();
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draw(canvas, 1, blobs);
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}
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#endif
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