0ccc62d4f7
Implemented as a different subclass for SkColorShader (which is also private) partly to make the CL clearer/simpler, and partly for flatten/unflatten compatibility. Later I'm sure we could combine these if that proves useful. Lots of TODOs at the moment, but still valuable to get reviewed. Note: this ignores the question (for the moment) about how to interpret SkColor in the larger world. That needs to happen, but this CL is more focused on what *else* to do besides handle the old-style input (and old-style pipeline). BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1934313002 Review-Url: https://codereview.chromium.org/1934313002
126 lines
3.9 KiB
C++
126 lines
3.9 KiB
C++
/*
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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 "SkCanvas.h"
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#include "SkColorPriv.h"
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#include "SkShader.h"
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#include "SkSurface.h"
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#include "SkColorMatrixFilter.h"
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#include "SkGradientShader.h"
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static sk_sp<SkShader> make_opaque_color() {
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return SkShader::MakeColorShader(0xFFFF0000);
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}
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static sk_sp<SkShader> make_alpha_color() {
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return SkShader::MakeColorShader(0x80FF0000);
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}
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static sk_sp<SkColorFilter> make_cf_null() {
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return nullptr;
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}
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static sk_sp<SkColorFilter> make_cf0() {
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SkColorMatrix cm;
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cm.setSaturation(0.75f);
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return SkColorFilter::MakeMatrixFilterRowMajor255(cm.fMat);
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}
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static sk_sp<SkColorFilter> make_cf1() {
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SkColorMatrix cm;
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cm.setSaturation(0.75f);
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auto a(SkColorFilter::MakeMatrixFilterRowMajor255(cm.fMat));
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// CreateComposedFilter will try to concat these two matrices, resulting in a single
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// filter (which is good for speed). For this test, we want to force a real compose of
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// these two, so our inner filter has a scale-up, which disables the optimization of
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// combining the two matrices.
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cm.setScale(1.1f, 0.9f, 1);
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auto b(SkColorFilter::MakeMatrixFilterRowMajor255(cm.fMat));
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return SkColorFilter::MakeComposeFilter(a, b);
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}
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static sk_sp<SkColorFilter> make_cf2() {
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return SkColorFilter::MakeModeFilter(0x8044CC88, SkXfermode::kSrcATop_Mode);
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}
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static void draw_into_canvas(SkCanvas* canvas) {
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const SkRect r = SkRect::MakeWH(50, 100);
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sk_sp<SkShader> (*shaders[])() { make_opaque_color, make_alpha_color };
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sk_sp<SkColorFilter> (*filters[])() { make_cf_null, make_cf0, make_cf1, make_cf2 };
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SkPaint paint;
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for (auto shProc : shaders) {
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paint.setShader(shProc());
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for (auto cfProc : filters) {
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paint.setColorFilter(cfProc());
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canvas->drawRect(r, paint);
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canvas->translate(60, 0);
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}
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}
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}
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DEF_SIMPLE_GM(color4f, canvas, 1024, 260) {
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canvas->translate(10, 10);
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SkPaint bg;
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// need the target to be opaque, so we can draw it to the screen
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// even if it holds sRGB values.
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bg.setColor(0xFFFFFFFF);
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SkColorProfileType const profiles[] { kLinear_SkColorProfileType, kSRGB_SkColorProfileType };
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for (auto profile : profiles) {
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const SkImageInfo info = SkImageInfo::Make(1024, 100, kN32_SkColorType, kPremul_SkAlphaType,
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profile);
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auto surface(SkSurface::MakeRaster(info));
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surface->getCanvas()->drawPaint(bg);
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draw_into_canvas(surface->getCanvas());
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surface->draw(canvas, 0, 0, nullptr);
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canvas->translate(0, 120);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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#include "SkColorSpace.h"
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DEF_SIMPLE_GM(color4shader, canvas, 1024, 260) {
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canvas->translate(10, 10);
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SkMatrix44 mat(SkMatrix44::kUninitialized_Constructor);
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// red -> blue, green -> red, blue -> green
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mat.set3x3(0, 1, 0, 0, 0, 1, 1, 0, 0);
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const SkColor4f colors[] {
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{ 1, 1, 0, 0 },
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{ 1, 0, 1, 0 },
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{ 1, 0, 0, 1 },
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{ 1, 0.5, 0.5, 0.5 },
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};
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SkPaint paint;
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SkRect r = SkRect::MakeWH(100, 100);
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for (const auto& c4 : colors) {
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sk_sp<SkShader> shaders[] {
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SkShader::MakeColorShader(c4, nullptr),
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SkShader::MakeColorShader(c4, SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named)),
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SkShader::MakeColorShader(c4, SkColorSpace::NewRGB(SkColorSpace::SkGammas(1, 1, 1),
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mat)),
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};
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canvas->save();
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for (const auto& s : shaders) {
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paint.setShader(s);
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canvas->drawRect(r, paint);
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canvas->translate(r.width() * 6 / 5, 0);
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}
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canvas->restore();
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canvas->translate(0, r.height() * 6 / 5);
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}
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}
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