| /* |
| * 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.h" |
| #include "SkColorFilter.h" |
| #include "SkMaskFilter.h" |
| #include "SkPath.h" |
| #include "SkRegion.h" |
| #include "SkShader.h" |
| #include "SkUtils.h" |
| |
| |
| // effects |
| #include "SkGradientShader.h" |
| #include "SkBlurDrawLooper.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), |
| SkShader::kClamp_TileMode)); |
| canvas.drawPaint(paint); |
| } |
| |
| static void setup(SkPaint* paint, const SkBitmap& bm, bool filter, |
| SkShader::TileMode tmx, SkShader::TileMode tmy) { |
| paint->setShader(SkShader::MakeBitmapShader(bm, 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 { |
| |
| 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 SkShader::TileMode gModes[] = { |
| SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode }; |
| 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; |
| SkString str; |
| p.setAntiAlias(true); |
| sk_tool_utils::set_portable_typeface(&p); |
| p.setDither(true); |
| str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); |
| |
| p.setTextAlign(SkPaint::kCenter_Align); |
| canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); |
| |
| 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; |
| } |
| } |
| { |
| SkPaint p; |
| SkString str; |
| p.setAntiAlias(true); |
| sk_tool_utils::set_portable_typeface(&p); |
| str.printf("%s, %s", gConfigNames[i], gFilterNames[j]); |
| canvas->drawText(str.c_str(), str.size(), x, y + r.height() * 2 / 3, p); |
| } |
| |
| y += r.height() * 4 / 3; |
| } |
| } |
| } |
| |
| private: |
| bool fPowerOfTwoSize; |
| typedef skiagm::GM INHERITED; |
| }; |
| |
| constexpr int gWidth = 32; |
| constexpr int gHeight = 32; |
| |
| static sk_sp<SkShader> make_bm(SkShader::TileMode tx, SkShader::TileMode ty) { |
| SkBitmap bm; |
| makebm(&bm, kN32_SkColorType, gWidth, gHeight); |
| return SkShader::MakeBitmapShader(bm, tx, ty); |
| } |
| |
| static sk_sp<SkShader> make_grad(SkShader::TileMode tx, SkShader::TileMode 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, sk_tool_utils::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)); |
| } |
| return nullptr; |
| } |
| |
| typedef sk_sp<SkShader> (*ShaderProc)(SkShader::TileMode, SkShader::TileMode); |
| |
| 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 SkShader::TileMode gModes[] = { |
| SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode |
| }; |
| const char* gModeNames[] = { |
| "Clamp", "Repeat", "Mirror" |
| }; |
| |
| SkScalar y = SkIntToScalar(24); |
| SkScalar x = SkIntToScalar(66); |
| |
| SkPaint p; |
| p.setAntiAlias(true); |
| sk_tool_utils::set_portable_typeface(&p); |
| p.setTextAlign(SkPaint::kCenter_Align); |
| |
| for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { |
| SkString str(gModeNames[kx]); |
| canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); |
| x += r.width() * 4 / 3; |
| } |
| |
| y += SkIntToScalar(16) + h; |
| p.setTextAlign(SkPaint::kRight_Align); |
| |
| for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { |
| x = SkIntToScalar(16) + w; |
| |
| SkString str(gModeNames[ky]); |
| canvas->drawText(str.c_str(), str.size(), x, y + h/2, p); |
| |
| 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 TilingGM(true); ) |
| DEF_GM( return new TilingGM(false); ) |
| DEF_GM( return new Tiling2GM(make_bm, "bitmap"); ) |
| DEF_GM( return new Tiling2GM(make_grad, "gradient"); ) |