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b311480e | 1 | // Created on: 2011-07-13 |
2 | // Created by: Sergey ZERCHANINOV | |
973c2be1 | 3 | // Copyright (c) 2011-2014 OPEN CASCADE SAS |
b311480e | 4 | // |
973c2be1 | 5 | // This file is part of Open CASCADE Technology software library. |
b311480e | 6 | // |
d5f74e42 | 7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published | |
973c2be1 | 9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT | |
11 | // distribution for complete text of the license and disclaimer of any warranty. | |
b311480e | 12 | // |
973c2be1 | 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. | |
b311480e | 15 | |
2166f0fa SK |
16 | #ifndef OpenGl_PrimitiveArray_Header |
17 | #define OpenGl_PrimitiveArray_Header | |
18 | ||
871fa103 | 19 | #include <OpenGl_IndexBuffer.hxx> |
2166f0fa | 20 | |
2166f0fa | 21 | #include <Aspect_InteriorStyle.hxx> |
a577aaab | 22 | #include <Aspect_TypeOfMarker.hxx> |
871fa103 | 23 | #include <Graphic3d_TypeOfPrimitiveArray.hxx> |
24 | #include <Graphic3d_IndexBuffer.hxx> | |
25 | #include <Graphic3d_BoundBuffer.hxx> | |
2166f0fa SK |
26 | |
27 | #include <OpenGl_Element.hxx> | |
28 | ||
8d3f219f | 29 | class OpenGl_GraphicDriver; |
30 | ||
7d3e64ef | 31 | //! Class for rendering of arbitrary primitive array. |
2166f0fa SK |
32 | class OpenGl_PrimitiveArray : public OpenGl_Element |
33 | { | |
34 | public: | |
8e0a2b19 | 35 | //! OpenGL does not provide a constant for "none" draw mode. |
36 | //! So we define our own one that does not conflict with GL constants and utilizes common GL invalid value. | |
1d03e66d | 37 | enum |
38 | { | |
39 | DRAW_MODE_NONE = -1 | |
40 | }; | |
2166f0fa | 41 | |
e1c659da | 42 | //! Empty constructor |
43 | Standard_EXPORT OpenGl_PrimitiveArray (const OpenGl_GraphicDriver* theDriver); | |
44 | ||
2166f0fa | 45 | //! Default constructor |
e1c659da | 46 | Standard_EXPORT OpenGl_PrimitiveArray (const OpenGl_GraphicDriver* theDriver, |
47 | const Graphic3d_TypeOfPrimitiveArray theType, | |
48 | const Handle(Graphic3d_IndexBuffer)& theIndices, | |
49 | const Handle(Graphic3d_Buffer)& theAttribs, | |
50 | const Handle(Graphic3d_BoundBuffer)& theBounds); | |
51 | ||
52 | //! Destructor | |
53 | Standard_EXPORT virtual ~OpenGl_PrimitiveArray(); | |
2166f0fa | 54 | |
2166f0fa | 55 | //! Render primitives to the window |
64c6d8df | 56 | Standard_EXPORT virtual void Render (const Handle(OpenGl_Workspace)& theWorkspace) const Standard_OVERRIDE; |
e1c659da | 57 | |
58 | //! Release OpenGL resources (VBOs) | |
64c6d8df | 59 | Standard_EXPORT virtual void Release (OpenGl_Context* theContext) Standard_OVERRIDE; |
5e27df78 | 60 | |
e1c659da | 61 | //! Return true if VBOs initialization has been performed. |
62 | //! VBO initialization is performed during first Render() call. | |
63 | //! Notice that this flag does not indicate VBOs validity. | |
64 | Standard_Boolean IsInitialized() const { return myIsVboInit; } | |
2166f0fa | 65 | |
536d98e2 | 66 | //! Invalidate VBO content without destruction. |
67 | void Invalidate() const { myIsVboInit = Standard_False; } | |
68 | ||
871fa103 | 69 | //! @return primitive type (GL_LINES, GL_TRIANGLES and others) |
70 | GLint DrawMode() const { return myDrawMode; } | |
2166f0fa | 71 | |
8e0a2b19 | 72 | //! Return TRUE if primitive type generates shaded triangulation. |
64c6d8df | 73 | virtual Standard_Boolean IsFillDrawMode() const Standard_OVERRIDE { return myIsFillType; } |
8e0a2b19 | 74 | |
871fa103 | 75 | //! @return indices array |
76 | const Handle(Graphic3d_IndexBuffer)& Indices() const { return myIndices; } | |
2166f0fa | 77 | |
871fa103 | 78 | //! @return attributes array |
79 | const Handle(Graphic3d_Buffer)& Attributes() const { return myAttribs; } | |
80 | ||
81 | //! @return bounds array | |
82 | const Handle(Graphic3d_BoundBuffer)& Bounds() const { return myBounds; } | |
83 | ||
8d3f219f | 84 | //! Returns unique ID of primitive array. |
487bf1ce | 85 | Standard_Size GetUID() const { return myUID; } |
8d3f219f | 86 | |
a79f67f8 | 87 | //! Initialize indices, attributes and bounds with new data. |
e1c659da | 88 | Standard_EXPORT void InitBuffers (const Handle(OpenGl_Context)& theContext, |
89 | const Graphic3d_TypeOfPrimitiveArray theType, | |
90 | const Handle(Graphic3d_IndexBuffer)& theIndices, | |
91 | const Handle(Graphic3d_Buffer)& theAttribs, | |
92 | const Handle(Graphic3d_BoundBuffer)& theBounds); | |
a79f67f8 | 93 | |
15669413 | 94 | public: |
95 | ||
96 | //! Returns index VBO. | |
97 | const Handle(OpenGl_VertexBuffer)& IndexVbo() const { return myVboIndices; } | |
98 | ||
99 | //! Returns attributes VBO. | |
100 | const Handle(OpenGl_VertexBuffer)& AttributesVbo() const { return myVboAttribs; } | |
101 | ||
0b0320e7 | 102 | protected: |
7d3e64ef | 103 | |
2166f0fa | 104 | //! VBO initialization procedures |
7d3e64ef | 105 | //! @param theCtx bound GL context |
106 | //! @param theToKeepData when true, myAttribs will not be nullified after VBO creation | |
0b0320e7 | 107 | Standard_EXPORT Standard_Boolean buildVBO (const Handle(OpenGl_Context)& theCtx, |
108 | const Standard_Boolean theToKeepData) const; | |
109 | ||
110 | Standard_EXPORT void clearMemoryGL (const Handle(OpenGl_Context)& theGlCtx) const; | |
111 | ||
112 | private: | |
113 | ||
114 | //! Initialize normal (OpenGL-provided) VBO | |
115 | Standard_Boolean initNormalVbo (const Handle(OpenGl_Context)& theCtx) const; | |
2166f0fa SK |
116 | |
117 | //! Main procedure to draw array | |
7d3e64ef | 118 | void drawArray (const Handle(OpenGl_Workspace)& theWorkspace, |
8625ef7e | 119 | const Graphic3d_Vec4* theFaceColors, |
120 | const Standard_Boolean theHasVertColor) const; | |
2166f0fa SK |
121 | |
122 | //! Auxiliary procedures | |
b6472664 | 123 | void drawEdges (const OpenGl_Vec4& theEdgeColour, |
2166f0fa SK |
124 | const Handle(OpenGl_Workspace)& theWorkspace) const; |
125 | ||
7d3e64ef | 126 | void drawMarkers (const Handle(OpenGl_Workspace)& theWorkspace) const; |
a577aaab | 127 | |
a79f67f8 | 128 | //! Sets OpenGL draw mode according to the input type of primitive array. |
129 | //! If buffer of attributes is empty, draw mode is set to NONE to avoid invalid array rendering. | |
130 | //! @param theType type of primitive array. | |
131 | void setDrawMode (const Graphic3d_TypeOfPrimitiveArray theType); | |
132 | ||
e99a2f7c | 133 | //! Rebuilds the array of vertex attributes so that it can be drawn without indices. |
134 | Standard_Boolean processIndices (const Handle(OpenGl_Context)& theContext) const; | |
135 | ||
5e27df78 | 136 | protected: |
137 | ||
7d3e64ef | 138 | mutable Handle(OpenGl_VertexBuffer) myVboIndices; |
871fa103 | 139 | mutable Handle(OpenGl_VertexBuffer) myVboAttribs; |
140 | ||
141 | mutable Handle(Graphic3d_IndexBuffer) myIndices; | |
142 | mutable Handle(Graphic3d_Buffer) myAttribs; | |
143 | mutable Handle(Graphic3d_BoundBuffer) myBounds; | |
8e0a2b19 | 144 | GLshort myDrawMode; |
145 | mutable Standard_Boolean myIsFillType; | |
871fa103 | 146 | mutable Standard_Boolean myIsVboInit; |
2166f0fa | 147 | |
8d3f219f | 148 | Standard_Size myUID; //!< Unique ID of primitive array. |
149 | ||
2166f0fa SK |
150 | public: |
151 | ||
1c35b92f | 152 | DEFINE_STANDARD_ALLOC |
2166f0fa SK |
153 | |
154 | }; | |
155 | ||
156 | #endif //OpenGl_PrimitiveArray_Header |