1 /* 2 * Copyright 2021 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "gm/gm.h" 9 #include "include/core/SkCanvas.h" 10 #include "include/core/SkFont.h" 11 #include "include/core/SkPaint.h" 12 #include "include/core/SkRect.h" 13 #include "include/core/SkSurface.h" 14 #include "include/core/SkTextBlob.h" 15 #include "include/gpu/GpuTypes.h" 16 #include "include/gpu/ganesh/SkSurfaceGanesh.h" 17 #include "tools/fonts/FontToolUtils.h" 18 19 DEF_SIMPLE_GM_BG(skbug_12212, canvas, 400, 400, SK_ColorCYAN) { 20 // Create an Alpha_8 surface to draw into (strangely, with RGB pixel geometry). 21 auto imageInfo = SkImageInfo::Make(/*width=*/400, /*height=*/400, kAlpha_8_SkColorType, 22 kPremul_SkAlphaType); 23 SkSurfaceProps props(/*flags=*/0, kRGB_H_SkPixelGeometry); 24 sk_sp<SkSurface> surface = SkSurfaces::RenderTarget( 25 canvas->recordingContext(), skgpu::Budgeted::kNo, imageInfo, /*sampleCount=*/0, &props); 26 if (!surface) { 27 surface = SkSurfaces::Raster(imageInfo, &props); 28 } 29 30 // Draw text into the surface using LCD antialiasing. 31 SkPaint p; 32 p.setAntiAlias(true); 33 p.setBlendMode(SkBlendMode::kSrc); 34 p.setAlpha(0x80); 35 SkFont font = ToolUtils::DefaultPortableFont(); 36 font.setSize(170); 37 font.setEdging(SkFont::Edging::kSubpixelAntiAlias); 38 auto textBlob = SkTextBlob::MakeFromText("text", /*byteLength=*/4, font); 39 surface->getCanvas()->drawTextBlob(textBlob, /*x=*/50, /*y=*/350, p); 40 41 // Draw the surface on our main canvas. 42 surface->draw(canvas, /*x=*/0, /*y=*/0); 43 } 44