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
|
#import <QuartzCore/CAEAGLLayer.h>
#include "RenderBuffer.hpp"
#include "graphics/opengl/opengl.hpp"
#include "graphics/coordinates.hpp"
namespace iphone
{
RenderBuffer::RenderBuffer(shared_ptr<RenderContext> renderContext, CAEAGLLayer * layer)
: m_renderContext(renderContext)
{
OGLCHECK(glGenRenderbuffersOES(1, &m_id));
makeCurrent();
BOOL res = [m_renderContext->getEAGLContext() renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:layer];
if (res == NO)
LOG(LINFO, ("renderbufferStorage:fromDrawable has failed!"));
OGLCHECK(glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &m_width));
OGLCHECK(glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &m_height));
}
RenderBuffer::RenderBuffer(shared_ptr<RenderContext> renderContext, int width, int height)
: m_renderContext(renderContext)
{
OGLCHECK(glGenRenderbuffersOES(1, &m_id));
makeCurrent();
m_width = width;
m_height = height;
OGLCHECK(glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, m_width, m_height));
}
void RenderBuffer::makeCurrent()
{
OGLCHECK(glBindRenderbufferOES(GL_RENDERBUFFER_OES, m_id));
}
RenderBuffer::~RenderBuffer()
{
OGLCHECK(glDeleteRenderbuffersOES(1, &m_id));
}
unsigned int RenderBuffer::id() const
{
return m_id;
}
void RenderBuffer::present()
{
makeCurrent();
const int maxTryCount = 100;
int tryCount = 0;
while (!([m_renderContext->getEAGLContext() presentRenderbuffer:GL_RENDERBUFFER_OES])
&& (tryCount++ < maxTryCount));
if (tryCount == maxTryCount + 1)
NSLog(@"failed to present renderbuffer");
else if (tryCount != 0)
NSLog(@"renderBuffer was presented from %d try", tryCount);
}
unsigned RenderBuffer::width() const
{
return m_width;
}
unsigned RenderBuffer::height() const
{
return m_height;
}
void RenderBuffer::attachToFrameBuffer()
{
OGLCHECK(glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES,
GL_COLOR_ATTACHMENT0_OES,
GL_RENDERBUFFER_OES,
m_id));
}
void RenderBuffer::detachFromFrameBuffer()
{
OGLCHECK(glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES,
GL_COLOR_ATTACHMENT0_OES,
GL_RENDERBUFFER_OES,
0));
}
void RenderBuffer::coordMatrix(math::Matrix<float, 4, 4> & m)
{
graphics::getOrthoMatrix(m, 0, width(), height(), 0, -graphics::maxDepth, graphics::maxDepth);
}
}
|
