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
|
/*
* Copyright (C) 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(ACCELERATED_2D_CANVAS) || ENABLE(3D_CANVAS)
#include "DrawingBuffer.h"
#include "WebGLLayer.h"
#import "BlockExceptions.h"
namespace WebCore {
DrawingBuffer::DrawingBuffer(GraphicsContext3D* context, const IntSize& size)
: m_context(context)
, m_size(size)
, m_fbo(context->createFramebuffer())
{
ASSERT(m_fbo);
if (!m_fbo) {
clear();
return;
}
// Create the WebGLLayer
BEGIN_BLOCK_OBJC_EXCEPTIONS
m_platformLayer.adoptNS([[WebGLLayer alloc] initWithGraphicsContext3D:m_context.get()]);
#ifndef NDEBUG
[m_platformLayer.get() setName:@"DrawingBuffer Layer"];
#endif
END_BLOCK_OBJC_EXCEPTIONS
}
DrawingBuffer::~DrawingBuffer()
{
clear();
}
void DrawingBuffer::reset(const IntSize& newSize)
{
if (!m_context)
return;
if (m_size == newSize)
return;
m_size = newSize;
m_context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::RGBA, m_size.width(), m_size.height(), 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, 0);
}
#if USE(ACCELERATED_COMPOSITING)
PlatformLayer* DrawingBuffer::platformLayer()
{
return m_platformLayer.get();
}
#endif
}
#endif
|
