1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "tests/common/TestUtils.h"
18
19#include <gtest/gtest.h>
20#include <RecordingCanvas.h>
21#include <SkBlurDrawLooper.h>
22#include <SkCanvasStateUtils.h>
23#include <SkPicture.h>
24#include <SkPictureRecorder.h>
25
26using namespace android;
27using namespace android::uirenderer;
28
29/**
30 * Verify that we get the same culling bounds for text for (1) drawing glyphs
31 * directly to a Canvas or (2) going through a SkPicture as an intermediate step.
32 */
33OPENGL_PIPELINE_TEST(SkiaCanvasProxy, drawGlyphsViaPicture) {
34    auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
35        // setup test variables
36        SkPaint paint;
37        paint.setAntiAlias(true);
38        paint.setTextSize(20);
39        paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
40        static const char* text = "testing text bounds";
41
42        // draw text directly into Recording canvas
43        TestUtils::drawUtf8ToCanvas(&canvas, text, paint, 25, 25);
44
45        // record the same text draw into a SkPicture and replay it into a Recording canvas
46        SkPictureRecorder recorder;
47        SkCanvas* skCanvas = recorder.beginRecording(200, 200, NULL, 0);
48        std::unique_ptr<Canvas> pictCanvas(Canvas::create_canvas(skCanvas,
49                Canvas::XformToSRGB::kDefer));
50        TestUtils::drawUtf8ToCanvas(pictCanvas.get(), text, paint, 25, 25);
51        sk_sp<SkPicture> picture = recorder.finishRecordingAsPicture();
52
53        canvas.asSkCanvas()->drawPicture(picture);
54    });
55
56    // verify that the text bounds and matrices match
57    ASSERT_EQ(2U, dl->getOps().size());
58    auto directOp = dl->getOps()[0];
59    auto pictureOp = dl->getOps()[1];
60    ASSERT_EQ(RecordedOpId::TextOp, directOp->opId);
61    EXPECT_EQ(directOp->opId, pictureOp->opId);
62    EXPECT_EQ(directOp->unmappedBounds, pictureOp->unmappedBounds);
63    EXPECT_EQ(directOp->localMatrix, pictureOp->localMatrix);
64}
65
66TEST(SkiaCanvas, drawShadowLayer) {
67    auto surface = SkSurface::MakeRasterN32Premul(10, 10);
68    SkiaCanvas canvas(surface->getCanvas(), Canvas::XformToSRGB::kDefer);
69
70    // clear to white
71    canvas.drawColor(SK_ColorWHITE, SkBlendMode::kSrc);
72
73    SkPaint paint;
74    // it is transparent to ensure that we still draw the rect since it has a looper
75    paint.setColor(SK_ColorTRANSPARENT);
76    // this is how view's shadow layers are implemented
77    paint.setLooper(SkBlurDrawLooper::Make(0xF0000000, 6.0f, 0, 10));
78    canvas.drawRect(3, 3, 7, 7, paint);
79
80    ASSERT_EQ(TestUtils::getColor(surface, 0, 0), SK_ColorWHITE);
81    ASSERT_NE(TestUtils::getColor(surface, 5, 5), SK_ColorWHITE);
82}
83
84TEST(SkiaCanvas, colorSpaceXform) {
85    sk_sp<SkColorSpace> adobe = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
86                                                      SkColorSpace::kAdobeRGB_Gamut);
87
88    SkImageInfo adobeInfo = SkImageInfo::Make(1, 1, kN32_SkColorType, kOpaque_SkAlphaType, adobe);
89    sk_sp<Bitmap> adobeBitmap = Bitmap::allocateHeapBitmap(adobeInfo);
90    SkBitmap adobeSkBitmap;
91    adobeBitmap->getSkBitmap(&adobeSkBitmap);
92    adobeSkBitmap.lockPixels();
93    *adobeSkBitmap.getAddr32(0, 0) = 0xFF0000F0; // Opaque, almost fully-red
94
95    SkImageInfo info = adobeInfo.makeColorSpace(nullptr);
96    sk_sp<Bitmap> bitmap = Bitmap::allocateHeapBitmap(info);
97    SkBitmap skBitmap;
98    bitmap->getSkBitmap(&skBitmap);
99
100    // Create a software canvas.
101    SkiaCanvas canvas(skBitmap);
102    canvas.drawBitmap(*adobeBitmap, 0, 0, nullptr);
103    // The result should be fully red, since we convert to sRGB at draw time.
104    skBitmap.lockPixels();
105    ASSERT_EQ(0xFF0000FF, *skBitmap.getAddr32(0, 0));
106
107    // Create a software canvas with an Adobe color space.
108    SkiaCanvas adobeSkCanvas(adobeSkBitmap);
109    adobeSkCanvas.drawBitmap(*bitmap, 0, 0, nullptr);
110    // The result should be less than fully red, since we convert to Adobe RGB at draw time.
111    ASSERT_EQ(0xFF0000DC, *adobeSkBitmap.getAddr32(0, 0));
112
113    // Now try in kDefer mode.  This is a little strange given that, in practice, all software
114    // canvases are kImmediate.
115    SkCanvas skCanvas(skBitmap);
116    SkiaCanvas deferCanvas(&skCanvas, Canvas::XformToSRGB::kDefer);
117    deferCanvas.drawBitmap(*adobeBitmap, 0, 0, nullptr);
118    // The result should be as before, since we deferred the conversion to sRGB.
119    skBitmap.lockPixels();
120    ASSERT_EQ(0xFF0000DC, *skBitmap.getAddr32(0, 0));
121
122    // Test picture recording.  We will kDefer the xform at recording time, but handle it when
123    // we playback to the software canvas.
124    SkPictureRecorder recorder;
125    SkCanvas* skPicCanvas = recorder.beginRecording(1, 1, NULL, 0);
126    SkiaCanvas picCanvas(skPicCanvas, Canvas::XformToSRGB::kDefer);
127    picCanvas.drawBitmap(*adobeBitmap, 0, 0, nullptr);
128    sk_sp<SkPicture> picture = recorder.finishRecordingAsPicture();
129
130    // Playback to a deferred canvas.  The result should be as before.
131    deferCanvas.asSkCanvas()->drawPicture(picture);
132    ASSERT_EQ(0xFF0000DC, *skBitmap.getAddr32(0, 0));
133
134    // Playback to an immediate canvas.  The result should be fully red.
135    canvas.asSkCanvas()->drawPicture(picture);
136    ASSERT_EQ(0xFF0000FF, *skBitmap.getAddr32(0, 0));
137}
138
139TEST(SkiaCanvas, captureCanvasState) {
140    // Create a software canvas.
141    SkImageInfo info = SkImageInfo::Make(1, 1, kN32_SkColorType, kOpaque_SkAlphaType);
142    sk_sp<Bitmap> bitmap = Bitmap::allocateHeapBitmap(info);
143    SkBitmap skBitmap;
144    bitmap->getSkBitmap(&skBitmap);
145    skBitmap.eraseColor(0);
146    SkiaCanvas canvas(skBitmap);
147
148    // Translate, then capture and verify the CanvasState.
149    canvas.translate(1.0f, 1.0f);
150    SkCanvasState* state = canvas.captureCanvasState();
151    ASSERT_NE(state, nullptr);
152    std::unique_ptr<SkCanvas> newCanvas = SkCanvasStateUtils::MakeFromCanvasState(state);
153    ASSERT_NE(newCanvas.get(), nullptr);
154    newCanvas->translate(-1.0f, -1.0f);
155    ASSERT_TRUE(newCanvas->getTotalMatrix().isIdentity());
156    SkCanvasStateUtils::ReleaseCanvasState(state);
157
158    // Create a picture canvas.
159    SkPictureRecorder recorder;
160    SkCanvas* skPicCanvas = recorder.beginRecording(1, 1, NULL, 0);
161    SkiaCanvas picCanvas(skPicCanvas, Canvas::XformToSRGB::kDefer);
162    state = picCanvas.captureCanvasState();
163
164    // Verify that we cannot get the CanvasState.
165    ASSERT_EQ(state, nullptr);
166}
167