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