138 lines
4.9 KiB
C++
138 lines
4.9 KiB
C++
/*
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* Copyright 2013 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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// GM to stress the GPU font cache
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// It's not necessary to run this with CPU configs
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#include "gm/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkFontStyle.h"
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#include "include/core/SkFontTypes.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTypeface.h"
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#include "include/gpu/GrContextOptions.h"
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#include "include/gpu/GrDirectContext.h"
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#include "include/private/GrTypesPriv.h"
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#include "src/gpu/GrDirectContextPriv.h"
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#include "tools/ToolUtils.h"
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static SkScalar draw_string(SkCanvas* canvas, const SkString& text, SkScalar x,
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SkScalar y, const SkFont& font) {
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SkPaint paint;
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canvas->drawString(text, x, y, font, paint);
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return x + font.measureText(text.c_str(), text.size(), SkTextEncoding::kUTF8);
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}
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class FontCacheGM : public skiagm::GM {
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public:
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FontCacheGM(GrContextOptions::Enable allowMultipleTextures)
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: fAllowMultipleTextures(allowMultipleTextures) {
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this->setBGColor(SK_ColorLTGRAY);
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}
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void modifyGrContextOptions(GrContextOptions* options) override {
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options->fGlyphCacheTextureMaximumBytes = 0;
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options->fAllowMultipleGlyphCacheTextures = fAllowMultipleTextures;
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}
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protected:
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SkString onShortName() override {
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SkString name("fontcache");
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if (GrContextOptions::Enable::kYes == fAllowMultipleTextures) {
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name.append("-mt");
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}
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return name;
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}
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SkISize onISize() override { return SkISize::Make(kSize, kSize); }
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void onOnceBeforeDraw() override {
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fTypefaces[0] = ToolUtils::create_portable_typeface("serif", SkFontStyle::Italic());
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fTypefaces[1] = ToolUtils::create_portable_typeface("sans-serif", SkFontStyle::Italic());
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fTypefaces[2] = ToolUtils::create_portable_typeface("serif", SkFontStyle::Normal());
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fTypefaces[3] = ToolUtils::create_portable_typeface("sans-serif", SkFontStyle::Normal());
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fTypefaces[4] = ToolUtils::create_portable_typeface("serif", SkFontStyle::Bold());
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fTypefaces[5] = ToolUtils::create_portable_typeface("sans-serif", SkFontStyle::Bold());
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}
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void onDraw(SkCanvas* canvas) override {
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this->drawText(canvas);
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// Debugging tool for GPU.
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static const bool kShowAtlas = false;
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if (kShowAtlas) {
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if (auto dContext = GrAsDirectContext(canvas->recordingContext())) {
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auto img = dContext->priv().testingOnly_getFontAtlasImage(kA8_GrMaskFormat);
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canvas->drawImage(img, 0, 0);
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}
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}
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}
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private:
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void drawText(SkCanvas* canvas) {
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static const int kSizes[] = {8, 9, 10, 11, 12, 13, 18, 20, 25};
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static const SkString kTexts[] = {SkString("ABCDEFGHIJKLMNOPQRSTUVWXYZ"),
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SkString("abcdefghijklmnopqrstuvwxyz"),
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SkString("0123456789"),
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SkString("!@#$%^&*()<>[]{}")};
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SkFont font;
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font.setEdging(SkFont::Edging::kAntiAlias);
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font.setSubpixel(true);
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static const SkScalar kSubPixelInc = 1 / 2.f;
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SkScalar x = 0;
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SkScalar y = 10;
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SkScalar subpixelX = 0;
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SkScalar subpixelY = 0;
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bool offsetX = true;
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if (GrContextOptions::Enable::kYes == fAllowMultipleTextures) {
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canvas->scale(10, 10);
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}
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do {
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for (auto s : kSizes) {
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auto size = 2 * s;
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font.setSize(size);
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for (const auto& typeface : fTypefaces) {
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font.setTypeface(typeface);
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for (const auto& text : kTexts) {
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x = size + draw_string(canvas, text, x + subpixelX, y + subpixelY, font);
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x = SkScalarCeilToScalar(x);
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if (x + 100 > kSize) {
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x = 0;
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y += SkScalarCeilToScalar(size + 3);
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if (y > kSize) {
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return;
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}
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}
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}
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}
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(offsetX ? subpixelX : subpixelY) += kSubPixelInc;
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offsetX = !offsetX;
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}
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} while (true);
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}
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inline static constexpr SkScalar kSize = 1280;
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GrContextOptions::Enable fAllowMultipleTextures;
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sk_sp<SkTypeface> fTypefaces[6];
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using INHERITED = GM;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new FontCacheGM(GrContextOptions::Enable::kNo))
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DEF_GM(return new FontCacheGM(GrContextOptions::Enable::kYes))
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