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1 #ifndef _GLUOBJECTWRAPPER_HPP
2 #define _GLUOBJECTWRAPPER_HPP
3 /*-------------------------------------------------------------------------
4  * drawElements Quality Program OpenGL ES Utilities
5  * ------------------------------------------------
6  *
7  * Copyright 2014 The Android Open Source Project
8  *
9  * Licensed under the Apache License, Version 2.0 (the "License");
10  * you may not use this file except in compliance with the License.
11  * You may obtain a copy of the License at
12  *
13  *      http://www.apache.org/licenses/LICENSE-2.0
14  *
15  * Unless required by applicable law or agreed to in writing, software
16  * distributed under the License is distributed on an "AS IS" BASIS,
17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18  * See the License for the specific language governing permissions and
19  * limitations under the License.
20  *
21  *//*!
22  * \file
23  * \brief API object wrapper.
24  *//*--------------------------------------------------------------------*/
25 
26 #include "gluDefs.hpp"
27 #include "gluRenderContext.hpp"
28 #include "glwFunctions.hpp"
29 
30 #include <vector>
31 
32 namespace glu
33 {
34 
35 /*--------------------------------------------------------------------*//*!
36  * \brief API object type.
37  *
38  * API object type is used to choose allocation and deallocation routines
39  * for objects.
40  *//*--------------------------------------------------------------------*/
41 enum ObjectType
42 {
43 	OBJECTTYPE_TEXTURE = 0,
44 	OBJECTTYPE_BUFFER,
45 	OBJECTTYPE_RENDERBUFFER,
46 	OBJECTTYPE_FRAMEBUFFER,
47 	OBJECTTYPE_TRANSFORM_FEEDBACK,
48 	OBJECTTYPE_VERTEX_ARRAY,
49 	OBJECTTYPE_QUERY,
50 
51 	OBJECTTYPE_LAST
52 };
53 
54 struct ObjectTraits
55 {
56 	const char*					name;
57 	glw::glGenBuffersFunc		glw::Functions::*genFunc;
58 	glw::glDeleteBuffersFunc	glw::Functions::*deleteFunc;
59 };
60 
61 const ObjectTraits& objectTraits (ObjectType type);
62 
63 class ObjectWrapper
64 {
65 public:
66 							ObjectWrapper		(const glw::Functions& gl, const ObjectTraits& traits);
67 							~ObjectWrapper		(void);
68 
get(void) const69 	inline deUint32			get					(void) const { return m_object; }
operator *(void) const70 	inline deUint32			operator*			(void) const { return m_object; }
71 
72 protected:
73 	const glw::Functions&	m_gl;
74 	const ObjectTraits&		m_traits;
75 	deUint32				m_object;
76 
77 private:
78 							ObjectWrapper		(const ObjectWrapper& other);
79 	ObjectWrapper&			operator=			(const ObjectWrapper& other);
80 };
81 
82 /*--------------------------------------------------------------------*//*!
83  * \brief API object wrapper template.
84  *//*--------------------------------------------------------------------*/
85 template<ObjectType Type> class TypedObjectWrapper : public ObjectWrapper
86 {
87 public:
TypedObjectWrapper(const RenderContext & context)88 	explicit	TypedObjectWrapper (const RenderContext& context) : ObjectWrapper(context.getFunctions(), objectTraits(Type)) {}
TypedObjectWrapper(const glw::Functions & gl)89 	explicit	TypedObjectWrapper (const glw::Functions& gl) : ObjectWrapper(gl, objectTraits(Type)) {}
90 };
91 
92 /*--------------------------------------------------------------------*//*!
93  * \brief API object vector.
94  *//*--------------------------------------------------------------------*/
95 class ObjectVector
96 {
97 public:
98 										ObjectVector		(const glw::Functions& gl, const ObjectTraits& traits, size_t numObjects = 0);
99 										~ObjectVector		(void);
100 
size(void) const101 	size_t								size				(void) const		{ return m_objects.size();	}
102 
103 	void								resize				(size_t newSize);
104 	void								clear				(void);
105 
empty(void) const106 	bool								empty				(void) const		{ return m_objects.empty();	}
107 
get(size_t ndx) const108 	deUint32							get					(size_t ndx) const	{ return m_objects[ndx];	}
operator [](size_t ndx) const109 	deUint32							operator[]			(size_t ndx) const	{ return get(ndx);			}
110 
111 private:
112 										ObjectVector		(const ObjectVector& other);
113 	ObjectVector&						operator=			(const ObjectVector& other);
114 
115 	const glw::Functions&				m_gl;
116 	const ObjectTraits&					m_traits;
117 	std::vector<deUint32>				m_objects;
118 };
119 
120 template<ObjectType Type> class TypedObjectVector : public ObjectVector
121 {
122 public:
TypedObjectVector(const RenderContext & context,size_t numObjects=0)123 	explicit	TypedObjectVector (const RenderContext& context, size_t numObjects = 0) : ObjectVector(context.getFunctions(), objectTraits(Type), numObjects) {}
TypedObjectVector(const glw::Functions & gl,size_t numObjects=0)124 	explicit	TypedObjectVector (const glw::Functions& gl, size_t numObjects = 0) : ObjectVector(gl, objectTraits(Type), numObjects) {}
125 };
126 
127 // Typedefs for simple wrappers without functionality.
128 
129 typedef TypedObjectWrapper<OBJECTTYPE_TEXTURE>				Texture;
130 typedef TypedObjectWrapper<OBJECTTYPE_BUFFER>				Buffer;
131 typedef TypedObjectWrapper<OBJECTTYPE_RENDERBUFFER>			Renderbuffer;
132 typedef TypedObjectWrapper<OBJECTTYPE_FRAMEBUFFER>			Framebuffer;
133 typedef TypedObjectWrapper<OBJECTTYPE_TRANSFORM_FEEDBACK>	TransformFeedback;
134 typedef TypedObjectWrapper<OBJECTTYPE_VERTEX_ARRAY>			VertexArray;
135 typedef TypedObjectWrapper<OBJECTTYPE_QUERY>				Query;
136 
137 typedef TypedObjectVector<OBJECTTYPE_TEXTURE>				TextureVector;
138 typedef TypedObjectVector<OBJECTTYPE_BUFFER>				BufferVector;
139 typedef TypedObjectVector<OBJECTTYPE_RENDERBUFFER>			RenderbufferVector;
140 
141 } // glu
142 
143 #endif // _GLUOBJECTWRAPPER_HPP
144