1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
// This is a GPU-backend specific test. It relies on static intializers to work
#include "SkTypes.h"
#if SK_SUPPORT_GPU
#include "GrContextFactory.h"
#include "GrContextPriv.h"
#include "GrGpu.h"
#include "GrResourceProvider.h"
#include "GrSurfaceProxy.h"
#include "GrTexture.h"
#include "GrTest.h"
#include "SkGr.h"
#include "SkSurface.h"
#include "Test.h"
using sk_gpu_test::GrContextFactory;
void fill_transfer_data(int left, int top, int width, int height, int bufferWidth,
GrColor* data) {
// build red-green gradient
for (int j = top; j < top + height; ++j) {
for (int i = left; i < left + width; ++i) {
unsigned int red = (unsigned int)(256.f*((i - left) / (float)width));
unsigned int green = (unsigned int)(256.f*((j - top) / (float)height));
data[i + j*bufferWidth] = GrColorPackRGBA(red - (red>>8),
green - (green>>8), 0xff, 0xff);
}
}
}
bool does_full_buffer_contain_correct_values(GrColor* srcBuffer,
GrColor* dstBuffer,
int width,
int height,
int bufferWidth,
int bufferHeight,
GrSurfaceOrigin origin) {
GrColor* srcPtr = srcBuffer;
bool bottomUp = SkToBool(kBottomLeft_GrSurfaceOrigin == origin);
GrColor* dstPtr = bottomUp ? dstBuffer + bufferWidth*(bufferHeight-1) : dstBuffer;
int dstIncrement = bottomUp ? -bufferWidth : +bufferWidth;
for (int j = 0; j < height; ++j) {
for (int i = 0; i < width; ++i) {
if (srcPtr[i] != dstPtr[i]) {
return false;
}
}
srcPtr += bufferWidth;
dstPtr += dstIncrement;
}
return true;
}
void basic_transfer_test(skiatest::Reporter* reporter, GrContext* context, GrPixelConfig config,
GrSurfaceOrigin origin, bool renderTarget) {
if (GrCaps::kNone_MapFlags == context->caps()->mapBufferFlags()) {
return;
}
// set up the data
const int kTextureWidth = 16;
const int kTextureHeight = 16;
const int kBufferWidth = 20;
const int kBufferHeight = 16;
size_t rowBytes = kBufferWidth * sizeof(GrColor);
SkAutoTMalloc<GrColor> srcBuffer(kBufferWidth*kBufferHeight);
SkAutoTMalloc<GrColor> dstBuffer(kBufferWidth*kBufferHeight);
fill_transfer_data(0, 0, kTextureWidth, kTextureHeight, kBufferWidth, srcBuffer.get());
// create and fill transfer buffer
size_t size = rowBytes*kBufferHeight;
uint32_t bufferFlags = GrResourceProvider::kNoPendingIO_Flag;
sk_sp<GrBuffer> buffer(context->resourceProvider()->createBuffer(size,
kXferCpuToGpu_GrBufferType,
kDynamic_GrAccessPattern,
bufferFlags));
if (!buffer) {
return;
}
void* data = buffer->map();
memcpy(data, srcBuffer.get(), size);
buffer->unmap();
// create texture
GrSurfaceDesc desc;
desc.fFlags = renderTarget ? kRenderTarget_GrSurfaceFlag : kNone_GrSurfaceFlags;
desc.fOrigin = origin;
desc.fWidth = kTextureWidth;
desc.fHeight = kTextureHeight;
desc.fConfig = config;
desc.fSampleCnt = 0;
sk_sp<GrTexture> tex = context->resourceProvider()->createTexture(desc, SkBudgeted::kNo);
//////////////////////////
// transfer full data
bool result;
result = context->getGpu()->transferPixels(tex.get(), 0, 0, kTextureWidth, kTextureHeight,
config, buffer.get(), 0, rowBytes);
REPORTER_ASSERT(reporter, result);
memset(dstBuffer.get(), 0xCDCD, size);
result = context->getGpu()->readPixels(tex.get(), origin, 0, 0, kTextureWidth, kTextureHeight,
config, dstBuffer.get(), rowBytes);
if (result) {
REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_values(srcBuffer,
dstBuffer,
kTextureWidth,
kTextureHeight,
kBufferWidth,
kBufferHeight,
origin));
}
//////////////////////////
// transfer partial data
const int kLeft = 2;
const int kTop = 10;
const int kWidth = 10;
const int kHeight = 2;
// change color of subrectangle
fill_transfer_data(kLeft, kTop, kWidth, kHeight, kBufferWidth, srcBuffer.get());
data = buffer->map();
memcpy(data, srcBuffer.get(), size);
buffer->unmap();
size_t offset = sizeof(GrColor)*(kTop*kBufferWidth + kLeft);
result = context->getGpu()->transferPixels(tex.get(), kLeft, kTop, kWidth, kHeight, config,
buffer.get(), offset, rowBytes);
REPORTER_ASSERT(reporter, result);
memset(dstBuffer.get(), 0xCDCD, size);
result = context->getGpu()->readPixels(tex.get(), origin, 0, 0, kTextureWidth, kTextureHeight,
config, dstBuffer.get(), rowBytes);
if (result) {
REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_values(srcBuffer,
dstBuffer,
kTextureWidth,
kTextureHeight,
kBufferWidth,
kBufferHeight,
origin));
}
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(TransferPixelsTest, reporter, ctxInfo) {
// RGBA
basic_transfer_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig,
kTopLeft_GrSurfaceOrigin, false);
basic_transfer_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig,
kTopLeft_GrSurfaceOrigin, true);
basic_transfer_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig,
kBottomLeft_GrSurfaceOrigin, false);
basic_transfer_test(reporter, ctxInfo.grContext(), kRGBA_8888_GrPixelConfig,
kBottomLeft_GrSurfaceOrigin, true);
// BGRA
basic_transfer_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig,
kTopLeft_GrSurfaceOrigin, false);
basic_transfer_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig,
kTopLeft_GrSurfaceOrigin, true);
basic_transfer_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig,
kBottomLeft_GrSurfaceOrigin, false);
basic_transfer_test(reporter, ctxInfo.grContext(), kBGRA_8888_GrPixelConfig,
kBottomLeft_GrSurfaceOrigin, true);
}
#endif
|
