0025540: Visualization - discretization of the circle differs in shaded and wireframe...
[occt.git] / src / OpenGl / OpenGl_VertexBuffer.lxx
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7d3e64ef 1// Created by: Kirill GAVRILOV
2// Copyright (c) 2014 OPEN CASCADE SAS
3//
4// This file is part of Open CASCADE Technology software library.
5//
6// This library is free software; you can redistribute it and/or modify it under
7// the terms of the GNU Lesser General Public License version 2.1 as published
8// by the Free Software Foundation, with special exception defined in the file
9// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
10// distribution for complete text of the license and disclaimer of any warranty.
11//
12// Alternatively, this file may be used under the terms of Open CASCADE
13// commercial license or contractual agreement.
14
15// =======================================================================
16// function : bindAttribute
17// purpose :
18// =======================================================================
19inline void OpenGl_VertexBuffer::bindAttribute (const Handle(OpenGl_Context)& theCtx,
20 const Graphic3d_TypeOfAttribute theAttribute,
21 const GLint theNbComp,
22 const GLenum theDataType,
23 const GLsizei theStride,
24 const GLvoid* theOffset)
25{
26 if (theCtx->ActiveProgram().IsNull())
27 {
ca3c13d1 28 #if !defined(GL_ES_VERSION_2_0)
7d3e64ef 29 bindFixed (theCtx, theAttribute, theNbComp, theDataType, theStride, theOffset);
ca3c13d1 30 #endif
7d3e64ef 31 return;
32 }
33
34 theCtx->core20fwd->glEnableVertexAttribArray (theAttribute);
8625ef7e 35 theCtx->core20fwd->glVertexAttribPointer (theAttribute, theNbComp, theDataType, theDataType != GL_FLOAT, theStride, theOffset);
7d3e64ef 36}
37
ca3c13d1 38#if !defined(GL_ES_VERSION_2_0)
7d3e64ef 39// =======================================================================
40// function : bindFixed
41// purpose :
42// =======================================================================
43inline void OpenGl_VertexBuffer::bindFixed (const Handle(OpenGl_Context)& theCtx,
44 const Graphic3d_TypeOfAttribute theMode,
45 const GLint theNbComp,
46 const GLenum theDataType,
47 const GLsizei theStride,
48 const GLvoid* theOffset)
49{
50 switch (theMode)
51 {
52 case Graphic3d_TOA_POS:
53 {
54 theCtx->core11->glEnableClientState (GL_VERTEX_ARRAY);
55 theCtx->core11->glVertexPointer (theNbComp, theDataType, theStride, theOffset);
56 return;
57 }
58 case Graphic3d_TOA_NORM:
59 {
60 theCtx->core11->glEnableClientState (GL_NORMAL_ARRAY);
61 theCtx->core11->glNormalPointer (theDataType, theStride, theOffset);
62 return;
63 }
64 case Graphic3d_TOA_UV:
65 {
66 theCtx->core11->glEnableClientState (GL_TEXTURE_COORD_ARRAY);
67 theCtx->core11->glTexCoordPointer (theNbComp, theDataType, theStride, theOffset);
68 return;
69 }
70 case Graphic3d_TOA_COLOR:
71 {
72 theCtx->core11->glEnableClientState (GL_COLOR_ARRAY);
73 theCtx->core11->glColorPointer (theNbComp, theDataType, theStride, theOffset);
74 theCtx->core11->glColorMaterial (GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
75 theCtx->core11fwd->glEnable (GL_COLOR_MATERIAL);
76 return;
77 }
78 case Graphic3d_TOA_CUSTOM:
79 {
80 return;
81 }
82 }
83}
ca3c13d1 84#endif
7d3e64ef 85
86// =======================================================================
87// function : unbindAttribute
88// purpose :
89// =======================================================================
90inline void OpenGl_VertexBuffer::unbindAttribute (const Handle(OpenGl_Context)& theCtx,
91 const Graphic3d_TypeOfAttribute theAttribute)
92{
93 if (theCtx->ActiveProgram().IsNull())
94 {
ca3c13d1 95 #if !defined(GL_ES_VERSION_2_0)
7d3e64ef 96 unbindFixed (theCtx, theAttribute);
ca3c13d1 97 #endif
7d3e64ef 98 return;
99 }
100
101 theCtx->core20fwd->glDisableVertexAttribArray (theAttribute);
102}
103
ca3c13d1 104#if !defined(GL_ES_VERSION_2_0)
7d3e64ef 105// =======================================================================
106// function : unbindAttribute
107// purpose :
108// =======================================================================
109inline void OpenGl_VertexBuffer::unbindFixed (const Handle(OpenGl_Context)& theCtx,
110 const Graphic3d_TypeOfAttribute theMode)
111{
112 switch (theMode)
113 {
114 case Graphic3d_TOA_POS: theCtx->core11->glDisableClientState (GL_VERTEX_ARRAY); return;
115 case Graphic3d_TOA_NORM: theCtx->core11->glDisableClientState (GL_NORMAL_ARRAY); return;
116 case Graphic3d_TOA_UV: theCtx->core11->glDisableClientState (GL_TEXTURE_COORD_ARRAY); return;
117 case Graphic3d_TOA_COLOR:
118 {
119 theCtx->core11->glDisableClientState (GL_COLOR_ARRAY);
120 theCtx->core11fwd->glDisable (GL_COLOR_MATERIAL);
121 return;
122 }
123 case Graphic3d_TOA_CUSTOM:
124 {
125 return;
126 }
127 }
128}
ca3c13d1 129#endif