/* * Copyright 2011 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "SkColorFilter.h" #include "SkMaskFilter.h" #include "SkPath.h" #include "SkRegion.h" #include "SkShader.h" #include "SkTextUtils.h" #include "SkUTF.h" #include "ToolUtils.h" #include "gm.h" // effects #include "SkGradientShader.h" #include "SkBlurDrawLooper.h" #include "Resources.h" static void makebm(SkBitmap* bm, SkColorType ct, int w, int h) { bm->allocPixels(SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType)); bm->eraseColor(SK_ColorTRANSPARENT); SkCanvas canvas(*bm); SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} }; SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE }; SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 }; SkPaint paint; paint.setDither(true); paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos, SK_ARRAY_COUNT(colors), SkTileMode::kClamp)); canvas.drawPaint(paint); } static void setup(SkPaint* paint, const SkBitmap& bm, bool filter, SkTileMode tmx, SkTileMode tmy) { paint->setShader(bm.makeShader(tmx, tmy)); paint->setFilterQuality(filter ? kLow_SkFilterQuality : kNone_SkFilterQuality); } constexpr SkColorType gColorTypes[] = { kN32_SkColorType, kRGB_565_SkColorType, }; class TilingGM : public skiagm::GM { public: TilingGM(bool powerOfTwoSize) : fPowerOfTwoSize(powerOfTwoSize) { } SkBitmap fTexture[SK_ARRAY_COUNT(gColorTypes)]; protected: enum { kPOTSize = 32, kNPOTSize = 21, }; SkString onShortName() override { SkString name("tilemodes"); if (!fPowerOfTwoSize) { name.append("_npot"); } return name; } SkISize onISize() override { return SkISize::Make(880, 560); } void onOnceBeforeDraw() override { int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { makebm(&fTexture[i], gColorTypes[i], size, size); } } void onDraw(SkCanvas* canvas) override { SkPaint textPaint; SkFont font(ToolUtils::create_portable_typeface(), 12); int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) }; const char* gConfigNames[] = { "8888", "565", "4444" }; constexpr bool gFilters[] = { false, true }; static const char* gFilterNames[] = { "point", "bilinear" }; constexpr SkTileMode gModes[] = { SkTileMode::kClamp, SkTileMode::kRepeat, SkTileMode::kMirror }; static const char* gModeNames[] = { "C", "R", "M" }; SkScalar y = SkIntToScalar(24); SkScalar x = SkIntToScalar(10); for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { SkPaint p; p.setDither(true); SkString str; SkFont font(ToolUtils::create_portable_typeface()); str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); SkTextUtils::DrawString(canvas, str.c_str(), x + r.width()/2, y, font, p, SkTextUtils::kCenter_Align); x += r.width() * 4 / 3; } } y += SkIntToScalar(16); for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { for (size_t j = 0; j < SK_ARRAY_COUNT(gFilters); j++) { x = SkIntToScalar(10); for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { SkPaint paint; #if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue // on SGX where resizing NPOT textures to POT textures exhibits a driver bug. if (!fPowerOfTwoSize) { makebm(&fTexture[i], gColorTypes[i], size, size); } #endif setup(&paint, fTexture[i], gFilters[j], gModes[kx], gModes[ky]); paint.setDither(true); canvas->save(); canvas->translate(x, y); canvas->drawRect(r, paint); canvas->restore(); x += r.width() * 4 / 3; } } canvas->drawString(SkStringPrintf("%s, %s", gConfigNames[i], gFilterNames[j]), x, y + r.height() * 2 / 3, font, textPaint); y += r.height() * 4 / 3; } } } private: bool fPowerOfTwoSize; typedef skiagm::GM INHERITED; }; DEF_GM( return new TilingGM(true); ) DEF_GM( return new TilingGM(false); ) constexpr int gWidth = 32; constexpr int gHeight = 32; static sk_sp<SkShader> make_bm(SkTileMode tx, SkTileMode ty) { SkBitmap bm; makebm(&bm, kN32_SkColorType, gWidth, gHeight); return bm.makeShader(tx, ty); } static sk_sp<SkShader> make_grad(SkTileMode tx, SkTileMode ty) { SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} }; SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 }; SkScalar rad = SkIntToScalar(gWidth)/2; SkColor colors[] = {0xFFFF0000, ToolUtils::color_to_565(0xFF0044FF)}; int index = (int)ty; switch (index % 3) { case 0: return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors), tx); case 1: return SkGradientShader::MakeRadial(center, rad, colors, nullptr, SK_ARRAY_COUNT(colors), tx); case 2: return SkGradientShader::MakeSweep(center.fX, center.fY, colors, nullptr, SK_ARRAY_COUNT(colors), tx, 135, 225, 0, nullptr); } return nullptr; } typedef sk_sp<SkShader> (*ShaderProc)(SkTileMode, SkTileMode); class Tiling2GM : public skiagm::GM { ShaderProc fProc; SkString fName; public: Tiling2GM(ShaderProc proc, const char name[]) : fProc(proc) { fName.printf("tilemode_%s", name); } protected: SkString onShortName() override { return fName; } SkISize onISize() override { return SkISize::Make(650, 610); } void onDraw(SkCanvas* canvas) override { canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); const SkScalar w = SkIntToScalar(gWidth); const SkScalar h = SkIntToScalar(gHeight); SkRect r = { -w, -h, w*2, h*2 }; constexpr SkTileMode gModes[] = { SkTileMode::kClamp, SkTileMode::kRepeat, SkTileMode::kMirror }; const char* gModeNames[] = { "Clamp", "Repeat", "Mirror" }; SkScalar y = SkIntToScalar(24); SkScalar x = SkIntToScalar(66); SkFont font(ToolUtils::create_portable_typeface()); for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { SkString str(gModeNames[kx]); SkTextUtils::DrawString(canvas, str.c_str(), x + r.width()/2, y, font, SkPaint(), SkTextUtils::kCenter_Align); x += r.width() * 4 / 3; } y += SkIntToScalar(16) + h; for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { x = SkIntToScalar(16) + w; SkString str(gModeNames[ky]); SkTextUtils::DrawString(canvas, str.c_str(), x, y + h/2, font, SkPaint(), SkTextUtils::kRight_Align); x += SkIntToScalar(50); for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { SkPaint paint; paint.setShader(fProc(gModes[kx], gModes[ky])); canvas->save(); canvas->translate(x, y); canvas->drawRect(r, paint); canvas->restore(); x += r.width() * 4 / 3; } y += r.height() * 4 / 3; } } private: typedef skiagm::GM INHERITED; }; DEF_GM( return new Tiling2GM(make_bm, "bitmap"); ) DEF_GM( return new Tiling2GM(make_grad, "gradient"); ) //////////////////// #include "SkGradientShader.h" DEF_SIMPLE_GM(tilemode_decal, canvas, 720, 1100) { auto img = GetResourceAsImage("images/mandrill_128.png"); SkPaint bgpaint; bgpaint.setColor(SK_ColorYELLOW); SkRect r = { -20, -20, img->width() + 20.0f, img->height() + 20.0f }; canvas->translate(45, 45); std::function<void(SkPaint*, SkTileMode, SkTileMode)> shader_procs[] = { [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) { // Test no filtering with decal mode paint->setShader(img->makeShader(tx, ty)); paint->setFilterQuality(kNone_SkFilterQuality); }, [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) { // Test bilerp approximation for decal mode (or clamp to border HW) paint->setShader(img->makeShader(tx, ty)); paint->setFilterQuality(kLow_SkFilterQuality); }, [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) { // Test bicubic filter with decal mode paint->setShader(img->makeShader(tx, ty)); paint->setFilterQuality(kHigh_SkFilterQuality); }, [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) { SkColor colors[] = { SK_ColorRED, SK_ColorBLUE }; const SkPoint pts[] = {{ 0, 0 }, {img->width()*1.0f, img->height()*1.0f }}; const SkScalar* pos = nullptr; const int count = SK_ARRAY_COUNT(colors); paint->setShader(SkGradientShader::MakeLinear(pts, colors, pos, count, tx)); }, [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) { SkColor colors[] = { SK_ColorRED, SK_ColorBLUE }; const SkScalar* pos = nullptr; const int count = SK_ARRAY_COUNT(colors); paint->setShader(SkGradientShader::MakeRadial({ img->width()*0.5f, img->width()*0.5f }, img->width()*0.5f, colors, pos, count, tx)); }, }; const struct XY { SkTileMode fX; SkTileMode fY; } pairs[] = { { SkTileMode::kClamp, SkTileMode::kClamp }, { SkTileMode::kClamp, SkTileMode::kDecal }, { SkTileMode::kDecal, SkTileMode::kClamp }, { SkTileMode::kDecal, SkTileMode::kDecal }, }; for (const auto& p : pairs) { SkPaint paint; canvas->save(); for (const auto& proc : shader_procs) { canvas->save(); // Apply a slight rotation to highlight the differences between filtered and unfiltered // decal edges canvas->rotate(4); canvas->drawRect(r, bgpaint); proc(&paint, p.fX, p.fY); canvas->drawRect(r, paint); canvas->restore(); canvas->translate(0, r.height() + 20); } canvas->restore(); canvas->translate(r.width() + 10, 0); } }