dbfd7ab108
'static const' means, there must be at most one of these, and initialize it at compile time if possible or runtime if necessary. This leads to unexpected code execution, and TSAN* will complain about races on the guard variables. Generally 'constexpr' or 'const' are better choices. Neither can cause races: they're either intialized at compile time (constexpr) or intialized each time independently (const). This CL prefers constexpr where possible, and uses const where not. It even prefers constexpr over const where they don't make a difference... I want to have lots of examples of constexpr for people to see and mimic. The scoped-to-class static has nothing to do with any of this, and is not changed. * Not yet on the bots, which use an older TSAN. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2300623005 Review-Url: https://codereview.chromium.org/2300623005
125 lines
3.8 KiB
C++
125 lines
3.8 KiB
C++
/*
|
|
* Copyright 2014 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 "SkColorCubeFilter.h"
|
|
#include "SkData.h"
|
|
#include "SkGradientShader.h"
|
|
#include "SkTemplates.h"
|
|
|
|
namespace skiagm {
|
|
|
|
static sk_sp<SkShader> MakeLinear() {
|
|
constexpr SkPoint pts[2] = {
|
|
{ 0, 0 },
|
|
{ SkIntToScalar(80), SkIntToScalar(80) }
|
|
};
|
|
constexpr SkColor colors[] = { SK_ColorYELLOW, SK_ColorBLUE };
|
|
return SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kRepeat_TileMode, 0,
|
|
&SkMatrix::I());
|
|
}
|
|
|
|
class ColorCubeGM : public GM {
|
|
public:
|
|
ColorCubeGM() : fInitialized(false) {
|
|
this->setBGColor(0xFF000000);
|
|
}
|
|
|
|
protected:
|
|
SkString onShortName() override {
|
|
return SkString("colorcube");
|
|
}
|
|
|
|
void make_3Dluts() {
|
|
make_3Dlut(&f3DLut4, 4, true, false, false);
|
|
make_3Dlut(&f3DLut8, 8, false, true, false);
|
|
make_3Dlut(&f3DLut16, 16, false, true, true);
|
|
make_3Dlut(&f3DLut32, 32, true, true, false);
|
|
make_3Dlut(&f3DLut64, 64, true, false, true);
|
|
}
|
|
|
|
void make_bitmap() {
|
|
fBitmap.allocN32Pixels(80, 80);
|
|
SkCanvas canvas(fBitmap);
|
|
canvas.clear(0x00000000);
|
|
SkPaint paint;
|
|
paint.setAntiAlias(true);
|
|
paint.setShader(MakeLinear());
|
|
canvas.drawRect(SkRect::MakeWH(80, 80), paint);
|
|
}
|
|
|
|
void make_3Dlut(sk_sp<SkData>* data, int size, bool invR, bool invG, bool invB) {
|
|
*data = SkData::MakeUninitialized(sizeof(SkColor) * size * size * size);
|
|
SkColor* pixels = (SkColor*)((*data)->writable_data());
|
|
SkAutoTMalloc<uint8_t> lutMemory(size);
|
|
SkAutoTMalloc<uint8_t> invLutMemory(size);
|
|
uint8_t* lut = lutMemory.get();
|
|
uint8_t* invLut = invLutMemory.get();
|
|
const int maxIndex = size - 1;
|
|
for (int i = 0; i < size; i++) {
|
|
lut[i] = (i * 255) / maxIndex;
|
|
invLut[i] = ((maxIndex - i) * 255) / maxIndex;
|
|
}
|
|
for (int r = 0; r < size; ++r) {
|
|
for (int g = 0; g < size; ++g) {
|
|
for (int b = 0; b < size; ++b) {
|
|
pixels[(size * ((size * b) + g)) + r] = sk_tool_utils::color_to_565(
|
|
SkColorSetARGB(0xFF,
|
|
invR ? invLut[r] : lut[r],
|
|
invG ? invLut[g] : lut[g],
|
|
invB ? invLut[b] : lut[b]));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
SkISize onISize() override {
|
|
return SkISize::Make(500, 100);
|
|
}
|
|
|
|
void onDraw(SkCanvas* canvas) override {
|
|
if (!fInitialized) {
|
|
this->make_bitmap();
|
|
this->make_3Dluts();
|
|
fInitialized = true;
|
|
}
|
|
canvas->clear(0x00000000);
|
|
SkPaint paint;
|
|
paint.setColorFilter(SkColorCubeFilter::Make(f3DLut4, 4));
|
|
canvas->drawBitmap(fBitmap, 10, 10, &paint);
|
|
|
|
paint.setColorFilter(SkColorCubeFilter::Make(f3DLut8, 8));
|
|
canvas->drawBitmap(fBitmap, 110, 10, &paint);
|
|
|
|
paint.setColorFilter(SkColorCubeFilter::Make(f3DLut16, 16));
|
|
canvas->drawBitmap(fBitmap, 210, 10, &paint);
|
|
|
|
paint.setColorFilter(SkColorCubeFilter::Make(f3DLut32, 32));
|
|
canvas->drawBitmap(fBitmap, 310, 10, &paint);
|
|
|
|
paint.setColorFilter(SkColorCubeFilter::Make(f3DLut64, 64));
|
|
canvas->drawBitmap(fBitmap, 410, 10, &paint);
|
|
}
|
|
|
|
private:
|
|
typedef GM INHERITED;
|
|
bool fInitialized;
|
|
SkBitmap fBitmap;
|
|
sk_sp<SkData> f3DLut4;
|
|
sk_sp<SkData> f3DLut8;
|
|
sk_sp<SkData> f3DLut16;
|
|
sk_sp<SkData> f3DLut32;
|
|
sk_sp<SkData> f3DLut64;
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
static GM* MyFactory(void*) { return new ColorCubeGM; }
|
|
static GMRegistry reg(MyFactory);
|
|
|
|
}
|