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
|
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* 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
* OpenSceneGraph Public License for more details.
*/
#ifndef OSG_CLAMPCOLOR
#define OSG_CLAMPCOLOR 1
#include <osg/StateAttribute>
#ifndef GL_ARB_color_buffer_float
#define GL_RGBA_FLOAT_MODE_ARB 0x8820
#define GL_CLAMP_VERTEX_COLOR_ARB 0x891A
#define GL_CLAMP_FRAGMENT_COLOR_ARB 0x891B
#define GL_CLAMP_READ_COLOR_ARB 0x891C
#define GL_FIXED_ONLY_ARB 0x891D
#endif
#ifndef GL_FIXED_ONLY
#define GL_FIXED_ONLY GL_FIXED_ONLY_ARB
#define GL_CLAMP_VERTEX_COLOR GL_CLAMP_VERTEX_COLOR_ARB
#define GL_CLAMP_READ_COLOR GL_CLAMP_READ_COLOR_ARB
#define GL_CLAMP_FRAGMENT_COLOR GL_CLAMP_FRAGMENT_COLOR_ARB
#endif
#if defined(OSG_GL3_AVAILABLE)
#define GL_CLAMP_VERTEX_COLOR 0x891A
#define GL_CLAMP_FRAGMENT_COLOR 0x891B
#endif
namespace osg {
/** Encapsulates OpenGL ClampColor state. */
class OSG_EXPORT ClampColor : public StateAttribute
{
public :
ClampColor();
ClampColor(GLenum vertexMode, GLenum fragmentMode, GLenum readMode);
/** Copy constructor using CopyOp to manage deep vs shallow copy. */
ClampColor(const ClampColor& rhs,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
StateAttribute(rhs,copyop),
_clampVertexColor(rhs._clampVertexColor),
_clampFragmentColor(rhs._clampFragmentColor),
_clampReadColor(rhs._clampReadColor) {}
META_StateAttribute(osg, ClampColor,CLAMPCOLOR);
/** Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */
virtual int compare(const StateAttribute& sa) const
{
// Check for equal types, then create the rhs variable
// used by the COMPARE_StateAttribute_Parameter macros below.
COMPARE_StateAttribute_Types(ClampColor,sa)
// Compare each parameter in turn against the rhs.
COMPARE_StateAttribute_Parameter(_clampVertexColor)
COMPARE_StateAttribute_Parameter(_clampFragmentColor)
COMPARE_StateAttribute_Parameter(_clampReadColor)
return 0; // Passed all the above comparison macros, so must be equal.
}
void setClampVertexColor(GLenum mode) { _clampVertexColor = mode; }
GLenum getClampVertexColor() const { return _clampVertexColor; }
void setClampFragmentColor(GLenum mode) { _clampFragmentColor = mode; }
GLenum getClampFragmentColor() const { return _clampFragmentColor; }
void setClampReadColor(GLenum mode) { _clampReadColor = mode; }
GLenum getClampReadColor() const { return _clampReadColor; }
virtual void apply(State& state) const;
protected :
virtual ~ClampColor();
GLenum _clampVertexColor;
GLenum _clampFragmentColor;
GLenum _clampReadColor;
};
}
#endif
|
