| |
| /* |
| * 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 "SkPath.h" |
| #include "SkRegion.h" |
| #include "SkShader.h" |
| #include "SkUtils.h" |
| #include "SkColorPriv.h" |
| #include "SkColorFilter.h" |
| #include "SkTypeface.h" |
| #include "SkBlurMask.h" |
| |
| // effects |
| #include "SkGradientShader.h" |
| #include "SkUnitMappers.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; |
| |
| SkUnitMapper* um = NULL; |
| |
| um = new SkCosineMapper; |
| // um = new SkDiscreteMapper(12); |
| |
| SkAutoUnref au(um); |
| |
| paint.setDither(true); |
| paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos, |
| SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode, um))->unref(); |
| canvas.drawPaint(paint); |
| } |
| |
| static void setup(SkPaint* paint, const SkBitmap& bm, SkPaint::FilterLevel filter_level, |
| SkShader::TileMode tmx, SkShader::TileMode tmy) { |
| SkShader* shader = SkShader::CreateBitmapShader(bm, tmx, tmy); |
| paint->setShader(shader)->unref(); |
| paint->setFilterLevel(filter_level); |
| } |
| |
| static const SkColorType gColorTypes[] = { |
| kN32_SkColorType, |
| kRGB_565_SkColorType, |
| }; |
| |
| class ScaledTilingGM : public skiagm::GM { |
| SkAutoTUnref<SkBlurDrawLooper> fLooper; |
| public: |
| ScaledTilingGM(bool powerOfTwoSize) |
| : fLooper(SkBlurDrawLooper::Create(0x88000000, |
| SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(1)), |
| SkIntToScalar(2), SkIntToScalar(2))) |
| , fPowerOfTwoSize(powerOfTwoSize) { |
| } |
| |
| SkBitmap fTexture[SK_ARRAY_COUNT(gColorTypes)]; |
| |
| protected: |
| |
| enum { |
| kPOTSize = 4, |
| kNPOTSize = 3, |
| }; |
| |
| SkString onShortName() { |
| SkString name("scaled_tilemodes"); |
| if (!fPowerOfTwoSize) { |
| name.append("_npot"); |
| } |
| return name; |
| } |
| |
| SkISize onISize() { return SkISize::Make(880, 760); } |
| |
| virtual void onOnceBeforeDraw() SK_OVERRIDE { |
| int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { |
| makebm(&fTexture[i], gColorTypes[i], size, size); |
| } |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| |
| float scale = 32.f/kPOTSize; |
| |
| int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; |
| |
| SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) }; |
| |
| static const char* gColorTypeNames[] = { "8888" , "565", "4444" }; |
| |
| static const SkPaint::FilterLevel gFilterLevels[] = |
| { SkPaint::kNone_FilterLevel, |
| SkPaint::kLow_FilterLevel, |
| SkPaint::kMedium_FilterLevel, |
| SkPaint::kHigh_FilterLevel }; |
| static const char* gFilterNames[] = { "None", "Low", "Medium", "High" }; |
| |
| static const 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)/scale; |
| |
| 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); |
| p.setDither(true); |
| p.setLooper(fLooper); |
| str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); |
| |
| p.setTextAlign(SkPaint::kCenter_Align); |
| canvas->drawText(str.c_str(), str.size(), scale*(x + r.width()/2), y, p); |
| |
| x += r.width() * 4 / 3; |
| } |
| } |
| |
| y = SkIntToScalar(40) / scale; |
| |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { |
| for (size_t j = 0; j < SK_ARRAY_COUNT(gFilterLevels); j++) { |
| x = SkIntToScalar(10)/scale; |
| 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], gFilterLevels[j], gModes[kx], gModes[ky]); |
| paint.setDither(true); |
| |
| canvas->save(); |
| canvas->scale(scale,scale); |
| canvas->translate(x, y); |
| canvas->drawRect(r, paint); |
| canvas->restore(); |
| |
| x += r.width() * 4 / 3; |
| } |
| } |
| { |
| SkPaint p; |
| SkString str; |
| p.setAntiAlias(true); |
| p.setLooper(fLooper); |
| str.printf("%s, %s", gColorTypeNames[i], gFilterNames[j]); |
| canvas->drawText(str.c_str(), str.size(), scale*x, scale*(y + r.height() * 2 / 3), p); |
| } |
| |
| y += r.height() * 4 / 3; |
| } |
| } |
| } |
| |
| private: |
| bool fPowerOfTwoSize; |
| typedef skiagm::GM INHERITED; |
| }; |
| |
| static const int gWidth = 32; |
| static const int gHeight = 32; |
| |
| static SkShader* make_bm(SkShader::TileMode tx, SkShader::TileMode ty) { |
| SkBitmap bm; |
| makebm(&bm, kN32_SkColorType, gWidth, gHeight); |
| return SkShader::CreateBitmapShader(bm, tx, ty); |
| } |
| |
| static 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, 0xFF0044FF }; |
| |
| int index = (int)ty; |
| switch (index % 3) { |
| case 0: |
| return SkGradientShader::CreateLinear(pts, colors, NULL, SK_ARRAY_COUNT(colors), tx); |
| case 1: |
| return SkGradientShader::CreateRadial(center, rad, colors, NULL, SK_ARRAY_COUNT(colors), tx); |
| case 2: |
| return SkGradientShader::CreateSweep(center.fX, center.fY, colors, NULL, SK_ARRAY_COUNT(colors)); |
| } |
| |
| return NULL; |
| } |
| |
| typedef SkShader* (*ShaderProc)(SkShader::TileMode, SkShader::TileMode); |
| |
| class ScaledTiling2GM : public skiagm::GM { |
| ShaderProc fProc; |
| SkString fName; |
| public: |
| ScaledTiling2GM(ShaderProc proc, const char name[]) : fProc(proc) { |
| fName.printf("scaled_tilemode_%s", name); |
| } |
| |
| protected: |
| SkString onShortName() { |
| return fName; |
| } |
| |
| SkISize onISize() { return SkISize::Make(880, 560); } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| 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 }; |
| |
| static const SkShader::TileMode gModes[] = { |
| SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode |
| }; |
| static const char* gModeNames[] = { |
| "Clamp", "Repeat", "Mirror" |
| }; |
| |
| SkScalar y = SkIntToScalar(24); |
| SkScalar x = SkIntToScalar(66); |
| |
| SkPaint p; |
| p.setAntiAlias(true); |
| 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]))->unref(); |
| |
| 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 ScaledTilingGM(true); ) |
| DEF_GM( return new ScaledTilingGM(false); ) |
| DEF_GM( return new ScaledTiling2GM(make_bm, "bitmap"); ) |
| DEF_GM( return new ScaledTiling2GM(make_grad, "gradient"); ) |