1 /*
2 * Copyright 2022 Google LLC
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "include/core/SkAlphaType.h"
9 #include "include/core/SkBitmap.h"
10 #include "include/core/SkCanvas.h"
11 #include "include/core/SkColor.h"
12 #include "include/core/SkColorSpace.h"
13 #include "include/core/SkColorType.h"
14 #include "include/core/SkImageInfo.h"
15 #include "include/core/SkPaint.h"
16 #include "include/core/SkRect.h"
17 #include "include/core/SkRefCnt.h"
18 #include "include/core/SkSurface.h"
19 #include "include/gpu/GpuTypes.h"
20 #include "include/gpu/GrBackendSurface.h"
21 #include "include/gpu/GrDirectContext.h"
22 #include "include/gpu/GrTypes.h"
23 #include "include/gpu/ganesh/SkSurfaceGanesh.h"
24 #include "include/private/gpu/ganesh/GrTypesPriv.h"
25 #include "src/gpu/ganesh/GrDirectContextPriv.h"
26 #include "tests/CtsEnforcement.h"
27 #include "tests/Test.h"
28
29 #include <cstdint>
30
31 struct GrContextOptions;
32
check_pixels(skiatest::Reporter * reporter,const SkBitmap & bitmap,GrSurfaceOrigin origin)33 static void check_pixels(skiatest::Reporter* reporter, const SkBitmap& bitmap,
34 GrSurfaceOrigin origin) {
35 const uint32_t* canvasPixels = static_cast<const uint32_t*>(bitmap.getPixels());
36
37 bool failureFound = false;
38 bool foundNonBlue = false;
39
40 for (int cy = 0; cy < 8 && !failureFound; ++cy) {
41 int cx = 4; // Just need to check one column;
42 SkPMColor canvasPixel = canvasPixels[cy * 8 + cx];
43 // We don't know which way the GPU will snap so the non-blue line could either be at row
44 // 3 or 4 since we drew the line at a y value of 4. We check that one of those two values
45 // is green and all the rest are blue. The key thing is that we should not get any red
46 // values since the green line in the saveLayer should snap the same way and overwrite the
47 // red line.
48 if (cy == 3) {
49 if (canvasPixel != 0xFFFF0000 && canvasPixel != 0xFF00FF00) {
50 failureFound = true;
51 ERRORF(reporter, "Wrong color at %d, %d. Got 0x%08x when we expected Blue or Green."
52 " Origin is: %s",
53 cx, cy, canvasPixel, GrSurfaceOriginToStr(origin));
54 }
55 if (canvasPixel != 0XFFFF0000) {
56 foundNonBlue = true;
57 }
58 } else {
59 SkPMColor expectedPixel;
60 if (cy == 4 && !foundNonBlue) {
61 expectedPixel = 0xFF00FF00; // Green
62 } else {
63 expectedPixel = 0xFFFF0000; // Blue
64 }
65 if (canvasPixel != expectedPixel) {
66 failureFound = true;
67 ERRORF(reporter,
68 "Wrong color at %d, %d. Got 0x%08x when we expected 0x%08x. Origin is: %s",
69 cx, cy, canvasPixel, expectedPixel, GrSurfaceOriginToStr(origin));
70 }
71 }
72 }
73 }
74
run_test(skiatest::Reporter * reporter,GrDirectContext * context,GrSurfaceOrigin origin)75 static void run_test(skiatest::Reporter* reporter,
76 GrDirectContext* context,
77 GrSurfaceOrigin origin) {
78 using namespace skgpu;
79
80 Protected isProtected = Protected(context->priv().caps()->supportsProtectedContent());
81
82 auto beTexture = context->createBackendTexture(8,
83 8,
84 kRGBA_8888_SkColorType,
85 Mipmapped::kNo,
86 GrRenderable::kYes,
87 isProtected);
88 REPORTER_ASSERT(reporter, beTexture.isValid());
89 if (!beTexture.isValid()) {
90 return;
91 }
92
93 auto surface = SkSurfaces::WrapBackendTexture(
94 context, beTexture, origin, 0, kRGBA_8888_SkColorType, nullptr, nullptr);
95 REPORTER_ASSERT(reporter, surface);
96 if (!surface) {
97 return;
98 }
99
100 SkCanvas* canvas = surface->getCanvas();
101
102 canvas->clear(SK_ColorBLUE);
103
104 SkPaint paint;
105 paint.setColor(SK_ColorRED);
106 canvas->drawLine({ 0,4 }, { 8,4 }, paint);
107
108 SkRect bounds = SkRect::MakeWH(8, 8);
109 SkPaint layerPaint;
110 canvas->saveLayer(bounds, &paint);
111 paint.setColor(SK_ColorGREEN);
112 canvas->drawLine({ 0,4 }, { 8,4 }, paint);
113 canvas->restore();
114
115 SkBitmap bitmap;
116 bitmap.allocPixels(SkImageInfo::Make(8, 8, kRGBA_8888_SkColorType, kPremul_SkAlphaType));
117 surface->readPixels(bitmap, 0, 0);
118
119 check_pixels(reporter, bitmap, origin);
120
121 context->deleteBackendTexture(beTexture);
122 }
123
DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SaveLayerOrigin,reporter,context_info,CtsEnforcement::kApiLevel_T)124 DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SaveLayerOrigin,
125 reporter,
126 context_info,
127 CtsEnforcement::kApiLevel_T) {
128 GrDirectContext* context = context_info.directContext();
129 run_test(reporter, context, kBottomLeft_GrSurfaceOrigin);
130 run_test(reporter, context, kTopLeft_GrSurfaceOrigin);
131 }
132