blob: 3fdf8fbbfcd30ed6930c24424742f0b1d44d5995 (
plain)
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
|
// Copyright (c) 2011 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/gfx/gl/gl_surface_osmesa.h"
#include "base/logging.h"
#include "ui/gfx/gl/gl_bindings.h"
namespace gfx {
GLSurfaceOSMesa::GLSurfaceOSMesa(unsigned format, const gfx::Size& size)
: format_(format),
size_(size) {
}
GLSurfaceOSMesa::~GLSurfaceOSMesa() {
Destroy();
}
void GLSurfaceOSMesa::Resize(const gfx::Size& new_size) {
if (new_size == size_)
return;
// Preserve the old buffer.
scoped_array<int32> old_buffer(buffer_.release());
// Allocate a new one.
AllocateBuffer(new_size);
// Copy the old back buffer into the new buffer.
int copy_width = std::min(size_.width(), new_size.width());
int copy_height = std::min(size_.height(), new_size.height());
for (int y = 0; y < copy_height; ++y) {
for (int x = 0; x < copy_width; ++x) {
buffer_[y * new_size.width() + x] = old_buffer[y * size_.width() + x];
}
}
size_ = new_size;
}
bool GLSurfaceOSMesa::Initialize() {
AllocateBuffer(size_);
return true;
}
void GLSurfaceOSMesa::Destroy() {
buffer_.reset();
}
bool GLSurfaceOSMesa::IsOffscreen() {
return true;
}
bool GLSurfaceOSMesa::SwapBuffers() {
NOTREACHED() << "Should not call SwapBuffers on an GLSurfaceOSMesa.";
return false;
}
gfx::Size GLSurfaceOSMesa::GetSize() {
return size_;
}
void* GLSurfaceOSMesa::GetHandle() {
return buffer_.get();
}
unsigned GLSurfaceOSMesa::GetFormat() {
return format_;
}
void GLSurfaceOSMesa::AllocateBuffer(const Size& size) {
buffer_.reset(new int32[size.GetArea()]);
memset(buffer_.get(), 0, size.GetArea() * sizeof(buffer_[0]));
}
} // namespace gfx
|
