753403cb64
There was an issue on Android where a client was drawing a small bit of text, and then a large chunk of text below it. On the next frame they started fading out the text and then swapped out all of the large chunk of text. We were not marking the Plot containing the small bit of text as still in use in this case, so it was getting overwritten by later uploads. That bug has been fixed, but this GM tests that codepath. Bug: b/118850208 Change-Id: I81b795d6b0ee5d5d0b8e380823a568a52118ed0c Reviewed-on: https://skia-review.googlesource.com/c/178924 Commit-Queue: Jim Van Verth <jvanverth@google.com> Reviewed-by: Herb Derby <herb@google.com> Reviewed-by: Robert Phillips <robertphillips@google.com>
119 lines
3.6 KiB
C++
119 lines
3.6 KiB
C++
/*
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* Copyright 2018 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 TextBlob regeneration and the GPU font cache
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// It's not necessary to run this with CPU configs
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//
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// The point here is to draw a set of text that will fit in one Plot, and then some large
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// text. After a flush we draw the first set of text again with a slightly different color,
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// and then enough new large text to spill the entire atlas. What *should* happen is that
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// the Plot with the first set of text will not get overwritten by the new large text.
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#include "gm.h"
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#include "GrContext.h"
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#include "GrContextPriv.h"
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#include "GrContextOptions.h"
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#include "SkCanvas.h"
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#include "SkGraphics.h"
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#include "SkImage.h"
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#include "SkTypeface.h"
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#include "gm.h"
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#include "sk_tool_utils.h"
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static sk_sp<SkTextBlob> make_blob(const SkString& text, const SkFont& font) {
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size_t len = text.size();
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SkAutoTArray<SkScalar> pos(len);
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SkAutoTArray<SkGlyphID> glyphs(len);
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font.textToGlyphs(text.c_str(), len, SkTextEncoding::kUTF8, glyphs.get(), len);
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font.getXPos(glyphs.get(), len, pos.get());
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return SkTextBlob::MakeFromPosTextH(text.c_str(), len, pos.get(), 0, font);
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}
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class FontRegenGM : public skiagm::GM {
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public:
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FontRegenGM() {
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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 = GrContextOptions::Enable::kNo;
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}
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protected:
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SkString onShortName() override {
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SkString name("fontregen");
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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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auto tf = sk_tool_utils::create_portable_typeface("sans-serif", SkFontStyle::Normal());
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static const SkString kTexts[] = {
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SkString("abcdefghijklmnopqrstuvwxyz"),
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SkString("ABCDEFGHI"),
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SkString("NOPQRSTUV")
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};
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SkFont font;
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font.setEdging(SkFont::Edging::kAntiAlias);
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font.setSubpixel(false);
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font.setSize(80);
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font.setTypeface(tf);
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fBlobs[0] = make_blob(kTexts[0], font);
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font.setSize(162);
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fBlobs[1] = make_blob(kTexts[1], font);
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fBlobs[2] = make_blob(kTexts[2], font);
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}
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void onDraw(SkCanvas* canvas) override {
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GrRenderTargetContext* renderTargetContext =
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canvas->internal_private_accessTopLayerRenderTargetContext();
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if (!renderTargetContext) {
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skiagm::GM::DrawGpuOnlyMessage(canvas);
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return;
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}
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SkPaint paint;
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paint.setColor(SK_ColorBLACK);
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canvas->drawTextBlob(fBlobs[0], 10, 80, paint);
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canvas->drawTextBlob(fBlobs[1], 10, 225, paint);
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canvas->flush();
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paint.setColor(0xFF010101);
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canvas->drawTextBlob(fBlobs[0], 10, 305, paint);
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canvas->drawTextBlob(fBlobs[2], 10, 465, paint);
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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 ctx = canvas->getGrContext()) {
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auto img = ctx->contextPriv().getFontAtlasImage_ForTesting(kA8_GrMaskFormat);
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canvas->drawImage(img, 200, 0);
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}
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}
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}
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private:
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static constexpr SkScalar kSize = 512;
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sk_sp<SkTextBlob> fBlobs[3];
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typedef GM INHERITED;
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};
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constexpr SkScalar FontRegenGM::kSize;
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new FontRegenGM())
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