1 /*-------------------------------------------------------------------------
2 * drawElements Quality Program OpenGL ES Utilities
3 * ------------------------------------------------
4 *
5 * Copyright 2014 The Android Open Source Project
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 *
19 *//*!
20 * \file
21 * \brief Buffer object wrapper.
22 *//*--------------------------------------------------------------------*/
23
24 #include "gluObjectWrapper.hpp"
25 #include "gluRenderContext.hpp"
26 #include "gluStrUtil.hpp"
27 #include "glwFunctions.hpp"
28 #include "glwEnums.hpp"
29 #include "deArrayUtil.hpp"
30
31 #include <sstream>
32
33 namespace glu
34 {
35
ObjectWrapper(const glw::Functions & gl,const ObjectTraits & traits)36 ObjectWrapper::ObjectWrapper(const glw::Functions &gl, const ObjectTraits &traits)
37 : m_gl(gl)
38 , m_traits(traits)
39 , m_object(0)
40 {
41 (gl.*traits.genFunc)(1, &m_object);
42
43 if (m_object == 0)
44 {
45 const uint32_t err = gl.getError();
46 const char *objectName = traits.name;
47 std::ostringstream msg;
48
49 msg << "Failed to create " << objectName << " object, got " << getErrorStr((int)err);
50
51 if (err == GL_OUT_OF_MEMORY)
52 throw OutOfMemoryError(msg.str());
53 else
54 throw Error((int)err, msg.str());
55 }
56 }
57
ObjectWrapper(const glw::Functions & gl,const ObjectTraits & traits,uint32_t object)58 ObjectWrapper::ObjectWrapper(const glw::Functions &gl, const ObjectTraits &traits, uint32_t object)
59 : m_gl(gl)
60 , m_traits(traits)
61 , m_object(object)
62 {
63 DE_ASSERT(object != 0);
64 }
65
~ObjectWrapper(void)66 ObjectWrapper::~ObjectWrapper(void)
67 {
68 (m_gl.*m_traits.deleteFunc)(1, &m_object);
69 }
70
71 static const ObjectTraits s_objectTraits[OBJECTTYPE_LAST] = {
72 {"texture", &glw::Functions::genTextures, &glw::Functions::deleteTextures},
73 {"buffer", &glw::Functions::genBuffers, &glw::Functions::deleteBuffers},
74 {"renderbuffer", &glw::Functions::genRenderbuffers, &glw::Functions::deleteRenderbuffers},
75 {"framebuffer", &glw::Functions::genFramebuffers, &glw::Functions::deleteFramebuffers},
76 {"transform feedback", &glw::Functions::genTransformFeedbacks, &glw::Functions::deleteTransformFeedbacks},
77 {"vertex array", &glw::Functions::genVertexArrays, &glw::Functions::deleteVertexArrays},
78 {"query", &glw::Functions::genQueries, &glw::Functions::deleteQueries},
79 {"sampler", &glw::Functions::genSamplers, &glw::Functions::deleteSamplers},
80 };
81
objectTraits(ObjectType type)82 const ObjectTraits &objectTraits(ObjectType type)
83 {
84 return de::getSizedArrayElement<OBJECTTYPE_LAST>(s_objectTraits, type);
85 }
86
ObjectVector(const glw::Functions & gl,const ObjectTraits & traits,size_t numObjects)87 ObjectVector::ObjectVector(const glw::Functions &gl, const ObjectTraits &traits, size_t numObjects)
88 : m_gl(gl)
89 , m_traits(traits)
90 {
91 if (numObjects > 0)
92 resize(numObjects);
93 }
94
~ObjectVector(void)95 ObjectVector::~ObjectVector(void)
96 {
97 clear();
98 }
99
resize(size_t newSize)100 void ObjectVector::resize(size_t newSize)
101 {
102 const size_t oldSize = m_objects.size();
103
104 if (newSize == 0)
105 {
106 clear(); // Avoid size_t (unsigned) overflow issues in delete path.
107 }
108 if (oldSize < newSize)
109 {
110 m_objects.resize(newSize, 0);
111 (m_gl.*m_traits.genFunc)(glw::GLsizei(newSize - oldSize), &m_objects[oldSize]);
112 }
113 else if (oldSize > newSize)
114 {
115 (m_gl.*m_traits.deleteFunc)(glw::GLsizei(oldSize - newSize), &m_objects[newSize]);
116 m_objects.resize(newSize);
117 }
118 }
119
clear(void)120 void ObjectVector::clear(void)
121 {
122 (m_gl.*m_traits.deleteFunc)(glw::GLsizei(m_objects.size()), &m_objects.front());
123 m_objects.clear();
124 }
125
126 } // namespace glu
127