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1 /*
2  * Copyright 2015 Google Inc.
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 // This is a GPU-backend specific test. It relies on static intializers to work
9 
10 #include "SkTypes.h"
11 
12 #if SK_SUPPORT_GPU && defined(SK_VULKAN)
13 
14 #include "GrContextFactory.h"
15 #include "GrContextPriv.h"
16 #include "GrProxyProvider.h"
17 #include "GrSurfaceProxy.h"
18 #include "GrTest.h"
19 #include "SkGr.h"
20 #include "Test.h"
21 #include "vk/GrVkGpu.h"
22 
23 using sk_gpu_test::GrContextFactory;
24 
fill_pixel_data(int width,int height,GrColor * data)25 void fill_pixel_data(int width, int height, GrColor* data) {
26 
27     // build red-green gradient
28     for (int j = 0; j < height; ++j) {
29         for (int i = 0; i < width; ++i) {
30             unsigned int red = (unsigned int)(256.f*(i / (float)width));
31             unsigned int green = (unsigned int)(256.f*(j / (float)height));
32             data[i + j*width] = GrColorPackRGBA(red - (red>>8), green - (green>>8), 0xff, 0xff);
33         }
34     }
35 }
36 
does_full_buffer_contain_correct_color(GrColor * srcBuffer,GrColor * dstBuffer,int width,int height)37 bool does_full_buffer_contain_correct_color(GrColor* srcBuffer,
38                                             GrColor* dstBuffer,
39                                             int width,
40                                             int height) {
41     GrColor* srcPtr = srcBuffer;
42     GrColor* dstPtr = dstBuffer;
43     for (int j = 0; j < height; ++j) {
44         for (int i = 0; i < width; ++i) {
45             if (srcPtr[i] != dstPtr[i]) {
46                 return false;
47             }
48         }
49         srcPtr += width;
50         dstPtr += width;
51     }
52     return true;
53 }
54 
basic_texture_test(skiatest::Reporter * reporter,GrContext * context,GrPixelConfig config,bool renderTarget)55 void basic_texture_test(skiatest::Reporter* reporter, GrContext* context, GrPixelConfig config,
56                         bool renderTarget) {
57     GrProxyProvider* proxyProvider = context->contextPriv().proxyProvider();
58 
59     const int kWidth = 16;
60     const int kHeight = 16;
61     SkAutoTMalloc<GrColor> srcBuffer(kWidth*kHeight);
62     SkAutoTMalloc<GrColor> dstBuffer(kWidth*kHeight);
63 
64     fill_pixel_data(kWidth, kHeight, srcBuffer.get());
65 
66     GrSurfaceDesc surfDesc;
67     surfDesc.fFlags = renderTarget ? kRenderTarget_GrSurfaceFlag : kNone_GrSurfaceFlags;
68     surfDesc.fOrigin = kTopLeft_GrSurfaceOrigin;
69     surfDesc.fWidth = kWidth;
70     surfDesc.fHeight = kHeight;
71     surfDesc.fConfig = config;
72     surfDesc.fSampleCnt = 1;
73 
74     SkColorType ct;
75     SkAssertResult(GrPixelConfigToColorType(config, &ct));
76 
77     sk_sp<GrTextureProxy> proxy = proxyProvider->createTextureProxy(surfDesc, SkBudgeted::kNo,
78                                                                     srcBuffer, 0);
79     REPORTER_ASSERT(reporter, proxy);
80     if (proxy) {
81         sk_sp<GrSurfaceContext> sContext = context->contextPriv().makeWrappedSurfaceContext(proxy);
82 
83         SkImageInfo dstInfo = SkImageInfo::Make(kWidth, kHeight, ct, kOpaque_SkAlphaType);
84 
85         bool result = sContext->readPixels(dstInfo, dstBuffer, 0, 0, 0);
86         REPORTER_ASSERT(reporter, result);
87         REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
88                                                                          dstBuffer,
89                                                                          kWidth,
90                                                                          kHeight));
91 
92         dstInfo = SkImageInfo::Make(10, 2, ct, kOpaque_SkAlphaType);
93         result = sContext->writePixels(dstInfo, srcBuffer, 0, 2, 10);
94         REPORTER_ASSERT(reporter, result);
95 
96         memset(dstBuffer, 0, kWidth*kHeight*sizeof(GrColor));
97 
98         result = sContext->readPixels(dstInfo, dstBuffer, 0, 2, 10);
99         REPORTER_ASSERT(reporter, result);
100 
101         REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
102                                                                          dstBuffer,
103                                                                          10,
104                                                                          2));
105     }
106 
107     surfDesc.fOrigin = kBottomLeft_GrSurfaceOrigin;
108 
109     proxy = proxyProvider->createTextureProxy(surfDesc, SkBudgeted::kNo, srcBuffer, 0);
110     REPORTER_ASSERT(reporter, proxy);
111     if (proxy) {
112         sk_sp<GrSurfaceContext> sContext = context->contextPriv().makeWrappedSurfaceContext(proxy);
113 
114         SkImageInfo dstInfo = SkImageInfo::Make(kWidth, kHeight, ct, kOpaque_SkAlphaType);
115 
116         bool result = sContext->readPixels(dstInfo, dstBuffer, 0, 0, 0);
117         REPORTER_ASSERT(reporter, result);
118         REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
119                                                                          dstBuffer,
120                                                                          kWidth,
121                                                                          kHeight));
122 
123         dstInfo = SkImageInfo::Make(4, 5, ct, kOpaque_SkAlphaType);
124         result = sContext->writePixels(dstInfo, srcBuffer, 0, 5, 4);
125         REPORTER_ASSERT(reporter, result);
126 
127         memset(dstBuffer, 0, kWidth*kHeight*sizeof(GrColor));
128 
129         result = sContext->readPixels(dstInfo, dstBuffer, 0, 5, 4);
130         REPORTER_ASSERT(reporter, result);
131 
132         REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
133                                                                          dstBuffer,
134                                                                          4,
135                                                                          5));
136 
137     }
138 }
139 
DEF_GPUTEST_FOR_VULKAN_CONTEXT(VkUploadPixelsTests,reporter,ctxInfo)140 DEF_GPUTEST_FOR_VULKAN_CONTEXT(VkUploadPixelsTests, reporter, ctxInfo) {
141     // RGBA
142     basic_texture_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig, false);
143     basic_texture_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig, true);
144 
145     // BGRA
146     basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig, false);
147     basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig, true);
148 }
149 
150 #endif
151