| /* |
| * 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 "gm/gm.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkFont.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkShader.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTileMode.h" |
| #include "include/core/SkTypeface.h" |
| #include "include/core/SkTypes.h" |
| #include "include/effects/SkGradientShader.h" |
| #include "include/utils/SkTextUtils.h" |
| #include "tools/Resources.h" |
| #include "tools/ToolUtils.h" |
| |
| #include <functional> |
| |
| 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, std::size(colors), |
| SkTileMode::kClamp)); |
| canvas.drawPaint(paint); |
| } |
| |
| static void setup(SkCanvas* canvas, SkPaint* paint, const SkBitmap& bm, SkFilterMode fm, |
| SkTileMode tmx, SkTileMode tmy) { |
| sk_sp<SkImage> img = SkImage::MakeFromBitmap(bm); |
| img = ToolUtils::MakeTextureImage(canvas, std::move(img)); |
| paint->setShader(img->makeShader(tmx, tmy, SkSamplingOptions(fm))); |
| } |
| |
| constexpr SkColorType gColorTypes[] = { |
| kN32_SkColorType, |
| kRGB_565_SkColorType, |
| }; |
| |
| class TilingGM : public skiagm::GM { |
| public: |
| TilingGM(bool powerOfTwoSize) |
| : fPowerOfTwoSize(powerOfTwoSize) { |
| } |
| |
| SkBitmap fTexture[std::size(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 < std::size(gColorTypes); i++) { |
| makebm(&fTexture[i], gColorTypes[i], size, size); |
| } |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| SkPaint textPaint; |
| SkFont font(ToolUtils::create_portable_typeface()); |
| |
| int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; |
| |
| SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) }; |
| |
| const char* gConfigNames[] = { "8888", "565" }; |
| |
| constexpr SkFilterMode gFilters[] = { SkFilterMode::kNearest, SkFilterMode::kLinear }; |
| 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 < std::size(gModes); kx++) { |
| for (size_t ky = 0; ky < std::size(gModes); ky++) { |
| SkPaint p; |
| p.setDither(true); |
| SkString str; |
| 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 < std::size(gColorTypes); i++) { |
| for (size_t j = 0; j < std::size(gFilters); j++) { |
| x = SkIntToScalar(10); |
| for (size_t kx = 0; kx < std::size(gModes); kx++) { |
| for (size_t ky = 0; ky < std::size(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(canvas, &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; |
| using INHERITED = skiagm::GM; |
| }; |
| 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, SkSamplingOptions()); |
| } |
| |
| 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, std::size(colors), tx); |
| case 1: |
| return SkGradientShader::MakeRadial(center, rad, colors, nullptr, std::size(colors), tx); |
| case 2: |
| return SkGradientShader::MakeSweep(center.fX, center.fY, colors, nullptr, |
| std::size(colors), tx, 135, 225, 0, nullptr); |
| } |
| return nullptr; |
| } |
| |
| typedef sk_sp<SkShader> (*ShaderProc)(SkTileMode, SkTileMode); |
| |
| class Tiling2GM : public skiagm::GM { |
| ShaderProc fProc; |
| const char* fName; |
| |
| public: |
| Tiling2GM(ShaderProc proc, const char name[]) : fProc(proc), fName(name) {} |
| |
| private: |
| SkString onShortName() override { return SkString(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 < std::size(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 < std::size(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 < std::size(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; |
| } |
| } |
| }; |
| |
| DEF_GM( return new Tiling2GM(make_bm, "tilemode_bitmap"); ) |
| DEF_GM( return new Tiling2GM(make_grad, "tilemode_gradient"); ) |
| |
| //////////////////// |
| |
| 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, SkSamplingOptions(SkFilterMode::kNearest))); |
| }, |
| [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) { |
| // Test bilerp approximation for decal mode (or clamp to border HW) |
| paint->setShader(img->makeShader(tx, ty, SkSamplingOptions(SkFilterMode::kLinear))); |
| }, |
| [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) { |
| // Test bicubic filter with decal mode |
| paint->setShader(img->makeShader(tx, ty, SkSamplingOptions(SkCubicResampler::Mitchell()))); |
| }, |
| [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 = std::size(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 = std::size(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); |
| } |
| } |