ef5252e48f
BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1663643002 Review URL: https://codereview.chromium.org/1663643002
107 lines
3.1 KiB
C++
107 lines
3.1 KiB
C++
/*
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* Copyright 2016 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 "SkCanvas.h"
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#include "SkImageInfo.h"
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#include "SkXfermode.h"
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static void draw_rect(SkCanvas* canvas, const SkRect& r, SkColor c, SkColorProfileType profile,
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const SkAlpha aa[]) {
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const SkIRect ir = r.round();
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SkBitmap bm;
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bm.allocN32Pixels(ir.width(), ir.height());
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bm.eraseColor(0xFFFFFFFF);
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SkPixmap pm;
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bm.peekPixels(&pm);
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uint32_t flags = 0;
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if (SkColorGetA(c) == 0xFF) {
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flags |= SkXfermode::kSrcIsOpaque_PM4fFlag;
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}
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if (kSRGB_SkColorProfileType == profile) {
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flags |= SkXfermode::kDstIsSRGB_PM4fFlag;
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}
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const SkXfermode::PM4fState state { nullptr, flags };
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const SkPM4f src = SkColor4f::FromColor(c).premul();
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auto proc1 = SkXfermode::GetPM4fProc1(SkXfermode::kSrcOver_Mode, flags);
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for (int y = 0; y < ir.height()/2; ++y) {
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proc1(state, pm.writable_addr32(0, y), src, ir.width(), aa);
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}
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SkPM4f srcRow[1000];
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for (int i = 0; i < ir.width(); ++i) {
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srcRow[i] = src;
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}
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auto procN = SkXfermode::GetPM4fProcN(SkXfermode::kSrcOver_Mode, flags);
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// +1 to skip a row, so we can see the boundary between proc1 and procN
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for (int y = ir.height()/2 + 1; y < ir.height(); ++y) {
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procN(state, pm.writable_addr32(0, y), srcRow, ir.width(), aa);
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}
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canvas->drawBitmap(bm, r.left(), r.top(), nullptr);
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}
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/*
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* Test SkXfer4fProcs directly for src-over, comparing them to current SkColor blits.
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*/
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DEF_SIMPLE_GM(xfer4f_srcover, canvas, 580, 760) {
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const int IW = 50;
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const SkScalar W = IW;
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const SkScalar H = 100;
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const int profiles[] = {
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-1,
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kLinear_SkColorProfileType,
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kSRGB_SkColorProfileType,
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};
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const SkColor colors[] = {
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SK_ColorBLACK, SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE,
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0x88000000, 0x88FF0000, 0x8800FF00, 0x880000FF
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};
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uint8_t aa_scanline[IW];
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for (int i = 0; i < IW; ++i) {
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aa_scanline[i] = i * 255 / (IW - 1);
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}
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uint8_t const* aa_table[] = { nullptr, aa_scanline };
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SkBitmap mask;
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mask.installPixels(SkImageInfo::MakeA8(IW, 1), aa_scanline, IW);
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canvas->translate(20, 20);
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const SkRect r = SkRect::MakeWH(W, H);
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for (const uint8_t* aa : aa_table) {
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canvas->save();
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for (auto profile : profiles) {
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canvas->save();
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for (SkColor c : colors) {
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if (profile < 0) {
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SkPaint p;
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p.setColor(c);
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if (aa) {
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canvas->drawBitmapRect(mask, r, &p);
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} else {
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canvas->drawRect(r, p);
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}
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} else {
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draw_rect(canvas, r, c, (SkColorProfileType)profile, aa);
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}
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canvas->translate(W + 20, 0);
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}
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canvas->restore();
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canvas->translate(0, H + 20);
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}
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canvas->restore();
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canvas->translate(0, (H + 20) * SK_ARRAY_COUNT(profiles) + 20);
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}
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}
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