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skia2/gm/tilemodes.cpp
Ben Wagner 7fde8e1728 IWYU for gms. 
This almost gets gms to be iwyu clean. The last bit is around gm.cpp
and the tracing framework and its use of atomic. Will also need a way
of keeping things from regressing, which is difficult due to needing to
do this outside-in.

Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2019-05-02 17:48:53 +00:00

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/*
* 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/SkFilterQuality.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, 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"); )
////////////////////
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);
}
}
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