VkUploadPixelsTests.cpp revision 9cb6340a62a5d748e4189d50e51fa527c8c80c03 
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 && SK_ALLOW_STATIC_GLOBAL_INITIALIZERS && defined(SK_VULKAN)
13
14#include "GrContextFactory.h"
15#include "GrTest.h"
16#include "Test.h"
17#include "vk/GrVkGpu.h"
18
19using sk_gpu_test::GrContextFactory;
20
21void fill_pixel_data(int width, int height, GrColor* data) {
22
23    // build red-green gradient
24    for (int j = 0; j < height; ++j) {
25        for (int i = 0; i < width; ++i) {
26            unsigned int red = (unsigned int)(256.f*(i / (float)width));
27            unsigned int green = (unsigned int)(256.f*(j / (float)height));
28            data[i + j*width] = GrColorPackRGBA(red - (red>>8), green - (green>>8), 0xff, 0xff);
29        }
30    }
31}
32
33bool does_full_buffer_contain_correct_color(GrColor* srcBuffer,
34                                            GrColor* dstBuffer,
35                                            GrPixelConfig config,
36                                            int width,
37                                            int height) {
38    GrColor* srcPtr = srcBuffer;
39    GrColor* dstPtr = dstBuffer;
40    for (int j = 0; j < height; ++j) {
41        for (int i = 0; i < width; ++i) {
42            if (srcPtr[i] != dstPtr[i]) {
43                return false;
44            }
45        }
46        srcPtr += width;
47        dstPtr += width;
48    }
49    return true;
50}
51
52void basic_texture_test(skiatest::Reporter* reporter, GrContext* context, GrPixelConfig config,
53                        bool renderTarget, bool linearTiling) {
54    GrVkGpu* gpu = static_cast<GrVkGpu*>(context->getGpu());
55
56    const int kWidth = 16;
57    const int kHeight = 16;
58    SkAutoTMalloc<GrColor> srcBuffer(kWidth*kHeight);
59    SkAutoTMalloc<GrColor> dstBuffer(kWidth*kHeight);
60
61    fill_pixel_data(kWidth, kHeight, srcBuffer.get());
62
63    const GrVkCaps* caps = reinterpret_cast<const GrVkCaps*>(context->caps());
64
65    bool canCreate = true;
66    // the expectation is that the given config is texturable/renderable with optimal tiling
67    // but may not be with linear tiling
68    if (linearTiling) {
69        if (!caps->isConfigTexurableLinearly(config) ||
70            (renderTarget && !caps->isConfigRenderableLinearly(config, false))) {
71            canCreate = false;
72        }
73    }
74
75    GrSurfaceDesc surfDesc;
76    surfDesc.fFlags = renderTarget ? kRenderTarget_GrSurfaceFlag : kNone_GrSurfaceFlags;
77    if (linearTiling) {
78        surfDesc.fFlags |= kZeroCopy_GrSurfaceFlag;
79    }
80    surfDesc.fOrigin = kTopLeft_GrSurfaceOrigin;
81    surfDesc.fWidth = kWidth;
82    surfDesc.fHeight = kHeight;
83    surfDesc.fConfig = config;
84    surfDesc.fSampleCnt = 0;
85    GrTexture* tex0 = gpu->createTexture(surfDesc, SkBudgeted::kNo, srcBuffer, 0);
86    if (tex0) {
87        REPORTER_ASSERT(reporter, canCreate);
88        gpu->readPixels(tex0, 0, 0, kWidth, kHeight, config, dstBuffer, 0);
89        REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
90                                                                         dstBuffer,
91                                                                         config,
92                                                                         kWidth,
93                                                                         kHeight));
94
95        tex0->writePixels(2, 10, 10, 2, config, srcBuffer);
96        memset(dstBuffer, 0, kWidth*kHeight*sizeof(GrColor));
97        gpu->readPixels(tex0, 2, 10, 10, 2, config, dstBuffer, 0);
98        REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
99                                                                         dstBuffer,
100                                                                         config,
101                                                                         10,
102                                                                         2));
103
104        tex0->unref();
105    } else {
106        REPORTER_ASSERT(reporter, !canCreate);
107    }
108
109    surfDesc.fOrigin = kBottomLeft_GrSurfaceOrigin;
110    GrTexture* tex1 = gpu->createTexture(surfDesc, SkBudgeted::kNo, srcBuffer, 0);
111    if (tex1) {
112        REPORTER_ASSERT(reporter, canCreate);
113        gpu->readPixels(tex1, 0, 0, kWidth, kHeight, config, dstBuffer, 0);
114        REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
115                                                                         dstBuffer,
116                                                                         config,
117                                                                         kWidth,
118                                                                         kHeight));
119
120        tex1->writePixels(5, 4, 4, 5, config, srcBuffer);
121        memset(dstBuffer, 0, kWidth*kHeight*sizeof(GrColor));
122        gpu->readPixels(tex1, 5, 4, 4, 5, config, dstBuffer, 0);
123        REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
124                                                                         dstBuffer,
125                                                                         config,
126                                                                         4,
127                                                                         5));
128
129        tex1->unref();
130    } else {
131        REPORTER_ASSERT(reporter, !canCreate);
132    }
133}
134
135DEF_GPUTEST_FOR_VULKAN_CONTEXT(VkUploadPixelsTests, reporter, ctxInfo) {
136    basic_texture_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig, false, false);
137    basic_texture_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig, true, false);
138    basic_texture_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig, false, true);
139    basic_texture_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig, true, true);
140    basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig, false, false);
141    basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig, true, false);
142    basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig, false, true);
143    basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig, true, true);
144}
145
146#endif
147