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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrSurface.h"
#include "GrSurfacePriv.h"
#include "SkBitmap.h"
#include "SkGr.h"
#include "SkImageEncoder.h"
#include <stdio.h>
size_t GrSurface::WorseCaseSize(const GrSurfaceDesc& desc) {
size_t size;
bool isRenderTarget = SkToBool(desc.fFlags & kRenderTarget_GrSurfaceFlag);
if (isRenderTarget) {
// We own one color value for each MSAA sample.
int colorValuesPerPixel = SkTMax(1, desc.fSampleCnt);
if (desc.fSampleCnt) {
// Worse case, we own the resolve buffer so that is one more sample per pixel.
colorValuesPerPixel += 1;
}
SkASSERT(kUnknown_GrPixelConfig != desc.fConfig);
SkASSERT(!GrPixelConfigIsCompressed(desc.fConfig));
size_t colorBytes = GrBytesPerPixel(desc.fConfig);
SkASSERT(colorBytes > 0);
size = colorValuesPerPixel * desc.fWidth * desc.fHeight * colorBytes;
} else {
if (GrPixelConfigIsCompressed(desc.fConfig)) {
size = GrCompressedFormatDataSize(desc.fConfig, desc.fWidth, desc.fHeight);
} else {
size = (size_t) desc.fWidth * desc.fHeight * GrBytesPerPixel(desc.fConfig);
}
size += size/3; // in case we have to mipmap
}
return size;
}
template<typename T> static bool adjust_params(int surfaceWidth,
int surfaceHeight,
size_t bpp,
int* left, int* top, int* width, int* height,
T** data,
size_t* rowBytes) {
if (!*rowBytes) {
*rowBytes = *width * bpp;
}
SkIRect subRect = SkIRect::MakeXYWH(*left, *top, *width, *height);
SkIRect bounds = SkIRect::MakeWH(surfaceWidth, surfaceHeight);
if (!subRect.intersect(bounds)) {
return false;
}
*data = reinterpret_cast<void*>(reinterpret_cast<intptr_t>(*data) +
(subRect.fTop - *top) * *rowBytes + (subRect.fLeft - *left) * bpp);
*left = subRect.fLeft;
*top = subRect.fTop;
*width = subRect.width();
*height = subRect.height();
return true;
}
bool GrSurfacePriv::AdjustReadPixelParams(int surfaceWidth,
int surfaceHeight,
size_t bpp,
int* left, int* top, int* width, int* height,
void** data,
size_t* rowBytes) {
return adjust_params<void>(surfaceWidth, surfaceHeight, bpp, left, top, width, height, data,
rowBytes);
}
bool GrSurfacePriv::AdjustWritePixelParams(int surfaceWidth,
int surfaceHeight,
size_t bpp,
int* left, int* top, int* width, int* height,
const void** data,
size_t* rowBytes) {
return adjust_params<const void>(surfaceWidth, surfaceHeight, bpp, left, top, width, height,
data, rowBytes);
}
//////////////////////////////////////////////////////////////////////////////
bool GrSurface::writePixels(int left, int top, int width, int height,
GrPixelConfig config, const void* buffer, size_t rowBytes,
uint32_t pixelOpsFlags) {
// go through context so that all necessary flushing occurs
GrContext* context = this->getContext();
if (NULL == context) {
return false;
}
return context->writeSurfacePixels(this, left, top, width, height, config, buffer, rowBytes,
pixelOpsFlags);
}
bool GrSurface::readPixels(int left, int top, int width, int height,
GrPixelConfig config, void* buffer, size_t rowBytes,
uint32_t pixelOpsFlags) {
// go through context so that all necessary flushing occurs
GrContext* context = this->getContext();
if (NULL == context) {
return false;
}
return context->readSurfacePixels(this, left, top, width, height, config, buffer,
rowBytes, pixelOpsFlags);
}
SkImageInfo GrSurface::info(SkAlphaType alphaType) const {
SkColorType colorType;
SkColorProfileType profileType;
if (!GrPixelConfig2ColorAndProfileType(this->config(), &colorType, &profileType)) {
sk_throw();
}
return SkImageInfo::Make(this->width(), this->height(), colorType, alphaType,
profileType);
}
// TODO: This should probably be a non-member helper function. It might only be needed in
// debug or developer builds.
bool GrSurface::savePixels(const char* filename) {
SkBitmap bm;
if (!bm.tryAllocPixels(SkImageInfo::MakeN32Premul(this->width(), this->height()))) {
return false;
}
bool result = this->readPixels(0, 0, this->width(), this->height(), kSkia8888_GrPixelConfig,
bm.getPixels());
if (!result) {
SkDebugf("------ failed to read pixels for %s\n", filename);
return false;
}
// remove any previous version of this file
remove(filename);
if (!SkImageEncoder::EncodeFile(filename, bm, SkImageEncoder::kPNG_Type, 100)) {
SkDebugf("------ failed to encode %s\n", filename);
remove(filename); // remove any partial file
return false;
}
return true;
}
void GrSurface::flushWrites() {
if (!this->wasDestroyed()) {
this->getContext()->flushSurfaceWrites(this);
}
}
void GrSurface::prepareForExternalIO() {
if (!this->wasDestroyed()) {
this->getContext()->prepareSurfaceForExternalIO(this);
}
}
bool GrSurface::hasPendingRead() const {
const GrTexture* thisTex = this->asTexture();
if (thisTex && thisTex->internalHasPendingRead()) {
return true;
}
const GrRenderTarget* thisRT = this->asRenderTarget();
if (thisRT && thisRT->internalHasPendingRead()) {
return true;
}
return false;
}
bool GrSurface::hasPendingWrite() const {
const GrTexture* thisTex = this->asTexture();
if (thisTex && thisTex->internalHasPendingWrite()) {
return true;
}
const GrRenderTarget* thisRT = this->asRenderTarget();
if (thisRT && thisRT->internalHasPendingWrite()) {
return true;
}
return false;
}
bool GrSurface::hasPendingIO() const {
const GrTexture* thisTex = this->asTexture();
if (thisTex && thisTex->internalHasPendingIO()) {
return true;
}
const GrRenderTarget* thisRT = this->asRenderTarget();
if (thisRT && thisRT->internalHasPendingIO()) {
return true;
}
return false;
}
void GrSurface::onRelease() {
this->invokeReleaseProc();
this->INHERITED::onRelease();
}
void GrSurface::onAbandon() {
this->invokeReleaseProc();
this->INHERITED::onAbandon();
}
|
