-
Notifications
You must be signed in to change notification settings - Fork 0
/
VertexArrayObject.cpp
65 lines (52 loc) · 1.56 KB
/
VertexArrayObject.cpp
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
#include "VertexArrayObject.hpp"
#include "VertexTypes.hpp"
#include <glad/glad.h>
VertexArrayObject::VertexArrayObject() {
VAO = 0;
VBO = 0;
EBO = 0;
vertexCount = 0;
indexCount = 0;
attribList;
}
VertexArrayObject::~VertexArrayObject() {
glDeleteBuffers(1, &EBO);
glDeleteBuffers(1, &VBO);
glDeleteVertexArrays(1, &VAO);
}
void VertexArrayObject::build(const Vertex3DTextureList& vertices, const IndexList& indices) {
glGenBuffers(1, &VBO);
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &EBO);
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ARRAY_BUFFER, (sizeof(Vertex3DTexture) * vertices.size()), &vertices[0], GL_STATIC_DRAW);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, (sizeof(unsigned int) * indices.size()), &indices[0], GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, (5 * sizeof(float)), (void*)0);
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, (5 * sizeof(float)), (void*)(3 * sizeof(float)));
glEnableVertexAttribArray(1);
attribList.push_back(0);
attribList.push_back(1);
vertexCount = vertices.size();
indexCount = indices.size();
}
void VertexArrayObject::activate() {
glBindVertexArray(VAO);
for (auto next : attribList) {
glEnableVertexAttribArray(next);
}
}
void VertexArrayObject::deactivate() {
for (auto next : attribList) {
glDisableVertexAttribArray(next);
}
glBindVertexArray(0);
}
int VertexArrayObject::getVertexCount() {
return vertexCount;
}
int VertexArrayObject::getIndexCount() {
return indexCount;
}