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/*
* 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"
#ifdef SK_BUILD_FOR_WIN
#include "SkTypeface_win.h"
#endif
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrContextFactory.h"
struct TextBlobWrapper {
// This class assumes it 'owns' the textblob it wraps, and thus does not need to take a ref
explicit TextBlobWrapper(const SkTextBlob* blob) : fBlob(blob) {}
TextBlobWrapper(const TextBlobWrapper& blob) : fBlob(SkRef(blob.fBlob.get())) {}
SkAutoTUnref<const SkTextBlob> fBlob;
};
static void draw(SkCanvas* canvas, int redraw, const SkTArray<TextBlobWrapper>& blobs) {
int yOffset = 0;
for (int r = 0; r < redraw; r++) {
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) {
// setup surface
uint32_t flags = 0;
SkSurfaceProps props(flags, SkSurfaceProps::kLegacyFontHost_InitType);
GrContext* ctx = factory->get(GrContextFactory::kNative_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);
// 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;
}
// 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)));
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));
const SkTextBlobBuilder::RunBuffer& run = builder.allocRun(paint,
MAX_TOTAL_TEXT,
0, 0,
NULL);
memcpy(run.glyphs, text, MAX_TOTAL_TEXT * 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);
SkAutoTUnref<SkSurface> surfaceNoLCD(canvas->newSurface(info, &propsNoLCD));
REPORTER_ASSERT(reporter, surface);
if (!surface) {
return;
}
SkCanvas* canvasNoLCD = surfaceNoLCD->getCanvas();
// test redraw
draw(canvas, 2, blobs);
draw(canvasNoLCD, 2, blobs);
// test draw after free
ctx->freeGpuResources();
draw(canvas, 1, blobs);
ctx->freeGpuResources();
draw(canvasNoLCD, 1, blobs);
// test draw after abandon
ctx->abandonContext();
draw(canvas, 1, blobs);
}
#endif
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