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Thomas Pitiot
CGoGN
Commits
69eb1c3b
Commit
69eb1c3b
authored
Feb 02, 2011
by
CGoGN GIT Supervisor
Browse files
Merge branch 'master' of /home/thery/CGoGN
parents
21085006
fa44ca20
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1
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src/Algo/Render/vbo_MapRender.cpp
0 → 100644
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69eb1c3b
/*******************************************************************************
* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps *
* version 0.1 *
* Copyright (C) 2009, IGG Team, LSIIT, University of Strasbourg *
* *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by the *
* Free Software Foundation; either version 2.1 of the License, or (at your *
* option) any later version. *
* *
* This library is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License *
* for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
* *
* Web site: https://iggservis.u-strasbg.fr/CGoGN/ *
* Contact information: cgogn@unistra.fr *
* *
*******************************************************************************/
#include
"Algo/Render/vbo_MapRender.h"
namespace
CGoGN
{
namespace
Algo
{
namespace
Render
{
namespace
VBO
{
MapRender_VBO
::
MapRender_VBO
()
:
m_nbIndicesTri
(
0
),
m_nbIndicesLines
(
0
)
{
glGenBuffersARB
(
NB_BUFFERS
,
m_VBOBuffers
)
;
for
(
unsigned
int
i
=
0
;
i
<
NB_BUFFERS
;
++
i
)
{
m_allocatedBuffers
[
i
]
=
false
;
m_usedBuffers
[
i
]
=
false
;
}
}
MapRender_VBO
::~
MapRender_VBO
()
{
glDeleteBuffersARB
(
NB_BUFFERS
,
m_VBOBuffers
);
delete
[]
m_VBOBuffers
;
}
MapRender_VBO
::
MapRender_VBO
(
const
MapRender_VBO
&
mrvbo
)
:
m_nbIndicesTri
(
0
),
m_nbIndicesLines
(
0
)
{
glGenBuffersARB
(
3
,
m_VBOBuffers
)
;
// gen only for indices
// get back others from mrvbo
for
(
unsigned
int
i
=
POSITIONS
;
i
<
NB_BUFFERS
;
++
i
)
{
m_allocatedBuffers
[
i
]
=
mrvbo
.
m_allocatedBuffers
[
i
]
;
m_usedBuffers
[
i
]
=
mrvbo
.
m_usedBuffers
[
i
]
;
}
}
void
MapRender_VBO
::
enableBuffers
(
int
buffersMask
)
{
if
((
buffersMask
&
POSITIONS
)
&&
m_allocatedBuffers
[
POSITIONS_BUFFER
])
m_usedBuffers
[
POSITIONS_BUFFER
]
=
true
;
if
((
buffersMask
&
NORMALS
)
&&
m_allocatedBuffers
[
NORMALS_BUFFER
])
m_usedBuffers
[
NORMALS_BUFFER
]
=
true
;
if
((
buffersMask
&
COLORS
)
&&
m_allocatedBuffers
[
COLORS_BUFFER
])
m_usedBuffers
[
COLORS_BUFFER
]
=
true
;
}
void
MapRender_VBO
::
disableBuffers
(
int
buffersMask
)
{
if
((
buffersMask
&
POSITIONS
))
m_usedBuffers
[
POSITIONS_BUFFER
]
=
false
;
if
((
buffersMask
&
NORMALS
))
m_usedBuffers
[
NORMALS_BUFFER
]
=
false
;
if
((
buffersMask
&
COLORS
))
m_usedBuffers
[
COLORS_BUFFER
]
=
false
;
}
void
MapRender_VBO
::
initPrimitives
(
int
prim
,
std
::
vector
<
GLuint
>&
tableIndices
)
{
// indice du VBO a utiliser
int
vbo_ind
=
0
;
switch
(
prim
)
{
case
TRIANGLES
:
m_nbIndicesTri
=
tableIndices
.
size
();
vbo_ind
=
m_VBOBuffers
[
TRIANGLE_INDICES
];
break
;
case
LINES
:
m_nbIndicesLines
=
tableIndices
.
size
();
vbo_ind
=
m_VBOBuffers
[
LINE_INDICES
];
break
;
case
POINTS
:
m_nbIndicesPoints
=
tableIndices
.
size
();
vbo_ind
=
m_VBOBuffers
[
POINT_INDICES
];
break
;
default:
std
::
cerr
<<
"problem initializing VBO indices"
<<
std
::
endl
;
break
;
}
int
size
=
tableIndices
.
size
();
// setup du buffer d'indices
glBindBufferARB
(
GL_ELEMENT_ARRAY_BUFFER
,
vbo_ind
);
glBufferDataARB
(
GL_ELEMENT_ARRAY_BUFFER
,
size
*
sizeof
(
GLuint
),
&
(
tableIndices
[
0
]),
GL_STREAM_DRAW
);
}
void
MapRender_VBO
::
drawTriangles
(
bool
bindColors
)
{
// buffer d'indices
glBindBufferARB
(
GL_ELEMENT_ARRAY_BUFFER
,
m_VBOBuffers
[
TRIANGLE_INDICES
]);
glEnableClientState
(
GL_INDEX_ARRAY
);
for
(
unsigned
int
i
=
POSITIONS_BUFFER
;
i
<
NB_BUFFERS
;
++
i
)
{
if
(
m_usedBuffers
[
i
])
{
glBindBufferARB
(
GL_ARRAY_BUFFER
,
m_VBOBuffers
[
i
]);
switch
(
i
)
{
case
POSITIONS_BUFFER
:
glVertexPointer
(
3
,
GL_FLOAT
,
0
,
0
);
glEnableClientState
(
GL_VERTEX_ARRAY
);
break
;
case
NORMALS_BUFFER
:
glNormalPointer
(
GL_FLOAT
,
0
,
0
);
glEnableClientState
(
GL_NORMAL_ARRAY
);
break
;
case
COLORS_BUFFER
:
if
(
bindColors
)
{
glColorPointer
(
4
,
GL_FLOAT
,
0
,
0
);
glEnableClientState
(
GL_COLOR_ARRAY
);
}
break
;
}
}
}
glDrawElements
(
GL_TRIANGLES
,
m_nbIndicesTri
,
GL_UNSIGNED_INT
,
0
);
glDisableClientState
(
GL_INDEX_ARRAY
);
for
(
unsigned
int
i
=
POSITIONS_BUFFER
;
i
<
NB_BUFFERS
;
++
i
)
{
if
(
m_usedBuffers
[
i
])
{
switch
(
i
)
{
case
POSITIONS_BUFFER
:
glDisableClientState
(
GL_VERTEX_ARRAY
);
break
;
case
NORMALS_BUFFER
:
glDisableClientState
(
GL_NORMAL_ARRAY
);
break
;
case
COLORS_BUFFER
:
if
(
bindColors
)
{
glDisableClientState
(
GL_COLOR_ARRAY
);
}
break
;
}
}
}
}
void
MapRender_VBO
::
drawLines
(
bool
bindColors
)
{
// buffer d'indices
glBindBufferARB
(
GL_ELEMENT_ARRAY_BUFFER
,
m_VBOBuffers
[
LINE_INDICES
]);
glEnableClientState
(
GL_INDEX_ARRAY
);
for
(
unsigned
int
i
=
POSITIONS_BUFFER
;
i
<
NB_BUFFERS
;
++
i
)
{
if
(
m_usedBuffers
[
i
])
{
switch
(
i
)
{
case
POSITIONS_BUFFER
:
glBindBufferARB
(
GL_ARRAY_BUFFER
,
m_VBOBuffers
[
i
]);
glVertexPointer
(
3
,
GL_FLOAT
,
0
,
0
);
glEnableClientState
(
GL_VERTEX_ARRAY
);
break
;
case
NORMALS_BUFFER
:
break
;
case
COLORS_BUFFER
:
if
(
bindColors
)
{
glBindBufferARB
(
GL_ARRAY_BUFFER
,
m_VBOBuffers
[
i
]);
glColorPointer
(
4
,
GL_FLOAT
,
0
,
0
);
glEnableClientState
(
GL_COLOR_ARRAY
);
}
break
;
}
}
}
glDrawElements
(
GL_LINES
,
m_nbIndicesLines
,
GL_UNSIGNED_INT
,
0
);
glDisableClientState
(
GL_INDEX_ARRAY
);
for
(
unsigned
int
i
=
POSITIONS_BUFFER
;
i
<
NB_BUFFERS
;
++
i
)
{
if
(
m_usedBuffers
[
i
])
{
switch
(
i
)
{
case
POSITIONS_BUFFER
:
glDisableClientState
(
GL_VERTEX_ARRAY
);
break
;
case
NORMALS_BUFFER
:
break
;
case
COLORS_BUFFER
:
if
(
bindColors
)
{
glDisableClientState
(
GL_COLOR_ARRAY
)
;
}
break
;
}
}
}
}
void
MapRender_VBO
::
drawPoints
(
bool
bindColors
)
{
// buffer d'indices
glBindBufferARB
(
GL_ELEMENT_ARRAY_BUFFER
,
m_VBOBuffers
[
POINT_INDICES
]);
glEnableClientState
(
GL_INDEX_ARRAY
);
for
(
unsigned
int
i
=
POSITIONS_BUFFER
;
i
<
NB_BUFFERS
;
++
i
)
{
if
(
m_usedBuffers
[
i
])
{
switch
(
i
)
{
case
POSITIONS_BUFFER
:
glBindBufferARB
(
GL_ARRAY_BUFFER
,
m_VBOBuffers
[
i
]);
glVertexPointer
(
3
,
GL_FLOAT
,
0
,
0
);
glEnableClientState
(
GL_VERTEX_ARRAY
);
break
;
case
NORMALS_BUFFER
:
break
;
case
COLORS_BUFFER
:
if
(
bindColors
)
{
glBindBufferARB
(
GL_ARRAY_BUFFER
,
m_VBOBuffers
[
i
]);
glColorPointer
(
4
,
GL_FLOAT
,
0
,
0
);
glEnableClientState
(
GL_COLOR_ARRAY
);
}
break
;
}
}
}
glDrawElements
(
GL_POINTS
,
m_nbIndicesPoints
,
GL_UNSIGNED_INT
,
0
)
;
glDisableClientState
(
GL_INDEX_ARRAY
);
for
(
unsigned
int
i
=
POSITIONS_BUFFER
;
i
<
NB_BUFFERS
;
++
i
)
{
if
(
m_usedBuffers
[
i
])
{
switch
(
i
)
{
case
POSITIONS_BUFFER
:
glDisableClientState
(
GL_VERTEX_ARRAY
);
break
;
case
NORMALS_BUFFER
:
break
;
case
COLORS_BUFFER
:
if
(
bindColors
)
{
glDisableClientState
(
GL_COLOR_ARRAY
);
}
break
;
default:
break
;
}
}
}
}
void
MapRender_VBO
::
draw
(
int
prim
,
bool
bindColors
)
{
switch
(
prim
)
{
case
TRIANGLES
:
drawTriangles
(
bindColors
);
break
;
case
LINES
:
drawLines
(
bindColors
);
break
;
case
POINTS
:
drawPoints
(
bindColors
);
break
;
case
FLAT_TRIANGLES
:
drawFlat
();
break
;
default:
break
;
}
}
void
MapRender_VBO
::
drawFlat
()
{
glBindBufferARB
(
GL_ARRAY_BUFFER
,
m_VBOBuffers
[
FLAT_BUFFER
]);
glVertexPointer
(
3
,
GL_FLOAT
,
6
*
sizeof
(
GL_FLOAT
),
0
);
glNormalPointer
(
GL_FLOAT
,
6
*
sizeof
(
GL_FLOAT
),
(
GLvoid
*
)(
3
*
sizeof
(
GL_FLOAT
)));
glEnableClientState
(
GL_VERTEX_ARRAY
);
glEnableClientState
(
GL_NORMAL_ARRAY
);
glDrawArrays
(
GL_TRIANGLES
,
0
,
m_nbFlatElts
);
glDisableClientState
(
GL_VERTEX_ARRAY
);
glDisableClientState
(
GL_NORMAL_ARRAY
);
}
}
// namespace VBO
}
// namespace Render
}
// namespace Algo
}
// namespace CGoGN
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