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
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gl/gl_image_memory.h"
#include "base/logging.h"
#include "base/trace_event/trace_event.h"
#include "ui/gl/gl_bindings.h"
namespace gfx {
namespace {
bool ValidInternalFormat(unsigned internalformat) {
switch (internalformat) {
case GL_ATC_RGB_AMD:
case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
case GL_ETC1_RGB8_OES:
case GL_R8:
case GL_RGBA:
case GL_BGRA_EXT:
return true;
default:
return false;
}
}
bool ValidFormat(BufferFormat format) {
switch (format) {
case BufferFormat::ATC:
case BufferFormat::ATCIA:
case BufferFormat::DXT1:
case BufferFormat::DXT5:
case BufferFormat::ETC1:
case BufferFormat::R_8:
case BufferFormat::RGBA_4444:
case BufferFormat::RGBA_8888:
case BufferFormat::BGRA_8888:
return true;
case BufferFormat::BGRX_8888:
case BufferFormat::YUV_420:
case BufferFormat::YUV_420_BIPLANAR:
case BufferFormat::UYVY_422:
return false;
}
NOTREACHED();
return false;
}
bool IsCompressedFormat(BufferFormat format) {
switch (format) {
case BufferFormat::ATC:
case BufferFormat::ATCIA:
case BufferFormat::DXT1:
case BufferFormat::DXT5:
case BufferFormat::ETC1:
return true;
case BufferFormat::R_8:
case BufferFormat::RGBA_4444:
case BufferFormat::RGBA_8888:
case BufferFormat::BGRA_8888:
case BufferFormat::BGRX_8888:
case BufferFormat::YUV_420:
case BufferFormat::YUV_420_BIPLANAR:
case BufferFormat::UYVY_422:
return false;
}
NOTREACHED();
return false;
}
GLenum TextureFormat(BufferFormat format) {
switch (format) {
case BufferFormat::ATC:
return GL_ATC_RGB_AMD;
case BufferFormat::ATCIA:
return GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD;
case BufferFormat::DXT1:
return GL_COMPRESSED_RGB_S3TC_DXT1_EXT;
case BufferFormat::DXT5:
return GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
case BufferFormat::ETC1:
return GL_ETC1_RGB8_OES;
case BufferFormat::R_8:
return GL_RED;
case BufferFormat::RGBA_4444:
case BufferFormat::RGBA_8888:
return GL_RGBA;
case BufferFormat::BGRA_8888:
return GL_BGRA_EXT;
case BufferFormat::BGRX_8888:
case BufferFormat::YUV_420:
case BufferFormat::YUV_420_BIPLANAR:
case BufferFormat::UYVY_422:
NOTREACHED();
return 0;
}
NOTREACHED();
return 0;
}
GLenum DataFormat(BufferFormat format) {
return TextureFormat(format);
}
GLenum DataType(BufferFormat format) {
switch (format) {
case BufferFormat::RGBA_4444:
return GL_UNSIGNED_SHORT_4_4_4_4;
case BufferFormat::RGBA_8888:
case BufferFormat::BGRA_8888:
case BufferFormat::R_8:
return GL_UNSIGNED_BYTE;
case BufferFormat::ATC:
case BufferFormat::ATCIA:
case BufferFormat::DXT1:
case BufferFormat::DXT5:
case BufferFormat::ETC1:
case BufferFormat::BGRX_8888:
case BufferFormat::YUV_420:
case BufferFormat::YUV_420_BIPLANAR:
case BufferFormat::UYVY_422:
NOTREACHED();
return 0;
}
NOTREACHED();
return 0;
}
GLsizei SizeInBytes(const Size& size, BufferFormat format) {
size_t stride_in_bytes = 0;
bool valid_stride = GLImageMemory::StrideInBytes(
size.width(), format, &stride_in_bytes);
DCHECK(valid_stride);
return static_cast<GLsizei>(stride_in_bytes * size.height());
}
} // namespace
GLImageMemory::GLImageMemory(const Size& size, unsigned internalformat)
: size_(size),
internalformat_(internalformat),
memory_(nullptr),
format_(BufferFormat::RGBA_8888) {}
GLImageMemory::~GLImageMemory() {
DCHECK(!memory_);
}
// static
bool GLImageMemory::StrideInBytes(size_t width,
BufferFormat format,
size_t* stride_in_bytes) {
base::CheckedNumeric<size_t> checked_stride = width;
switch (format) {
case BufferFormat::ATCIA:
case BufferFormat::DXT5:
*stride_in_bytes = width;
return true;
case BufferFormat::ATC:
case BufferFormat::DXT1:
case BufferFormat::ETC1:
DCHECK_EQ(width % 2, 0u);
*stride_in_bytes = width / 2;
return true;
case BufferFormat::R_8:
checked_stride += 3;
if (!checked_stride.IsValid())
return false;
*stride_in_bytes = checked_stride.ValueOrDie() & ~0x3;
return true;
case BufferFormat::RGBA_4444:
checked_stride *= 2;
if (!checked_stride.IsValid())
return false;
*stride_in_bytes = checked_stride.ValueOrDie();
return true;
case BufferFormat::RGBA_8888:
case BufferFormat::BGRA_8888:
checked_stride *= 4;
if (!checked_stride.IsValid())
return false;
*stride_in_bytes = checked_stride.ValueOrDie();
return true;
case BufferFormat::BGRX_8888:
case BufferFormat::YUV_420:
case BufferFormat::YUV_420_BIPLANAR:
case BufferFormat::UYVY_422:
NOTREACHED();
return false;
}
NOTREACHED();
return false;
}
bool GLImageMemory::Initialize(const unsigned char* memory,
BufferFormat format) {
if (!ValidInternalFormat(internalformat_)) {
LOG(ERROR) << "Invalid internalformat: " << internalformat_;
return false;
}
if (!ValidFormat(format)) {
LOG(ERROR) << "Invalid format: " << static_cast<int>(format);
return false;
}
DCHECK(memory);
DCHECK(!memory_);
DCHECK_IMPLIES(IsCompressedFormat(format), size_.width() % 4 == 0);
DCHECK_IMPLIES(IsCompressedFormat(format), size_.height() % 4 == 0);
memory_ = memory;
format_ = format;
return true;
}
void GLImageMemory::Destroy(bool have_context) {
memory_ = nullptr;
}
Size GLImageMemory::GetSize() {
return size_;
}
unsigned GLImageMemory::GetInternalFormat() {
return internalformat_;
}
bool GLImageMemory::BindTexImage(unsigned target) {
return false;
}
bool GLImageMemory::CopyTexImage(unsigned target) {
TRACE_EVENT2("gpu", "GLImageMemory::CopyTexImage", "width", size_.width(),
"height", size_.height());
// GL_TEXTURE_EXTERNAL_OES is not a supported target.
if (target == GL_TEXTURE_EXTERNAL_OES)
return false;
if (IsCompressedFormat(format_)) {
glCompressedTexImage2D(target, 0, TextureFormat(format_), size_.width(),
size_.height(), 0, SizeInBytes(size_, format_),
memory_);
} else {
glTexImage2D(target, 0, TextureFormat(format_), size_.width(),
size_.height(), 0, DataFormat(format_), DataType(format_),
memory_);
}
return true;
}
bool GLImageMemory::CopyTexSubImage(unsigned target,
const Point& offset,
const Rect& rect) {
TRACE_EVENT2("gpu", "GLImageMemory::CopyTexSubImage", "width", rect.width(),
"height", rect.height());
// GL_TEXTURE_EXTERNAL_OES is not a supported target.
if (target == GL_TEXTURE_EXTERNAL_OES)
return false;
// Sub width is not supported.
if (rect.width() != size_.width())
return false;
// Height must be a multiple of 4 if compressed.
if (IsCompressedFormat(format_) && rect.height() % 4)
return false;
size_t stride_in_bytes = 0;
bool rv = StrideInBytes(size_.width(), format_, &stride_in_bytes);
DCHECK(rv);
DCHECK(memory_);
const unsigned char* data = memory_ + rect.y() * stride_in_bytes;
if (IsCompressedFormat(format_)) {
glCompressedTexSubImage2D(target, 0, offset.x(), offset.y(), rect.width(),
rect.height(), DataFormat(format_),
SizeInBytes(rect.size(), format_), data);
} else {
glTexSubImage2D(target, 0, offset.x(), offset.y(), rect.width(),
rect.height(), DataFormat(format_), DataType(format_),
data);
}
return true;
}
bool GLImageMemory::ScheduleOverlayPlane(AcceleratedWidget widget,
int z_order,
OverlayTransform transform,
const Rect& bounds_rect,
const RectF& crop_rect) {
return false;
}
} // namespace gfx
|
