You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1.6 KiB
55 lines
1.6 KiB
#include "vertexbuffer.h"
|
|
|
|
GLuint VertexBuffer::CreateBufferObject(GLenum bufferType, GLsizeiptr size, GLenum usage, void * data)
|
|
{
|
|
GLuint object;
|
|
glGenBuffers(1, &object);
|
|
glBindBuffer(bufferType, object);
|
|
glBufferData(bufferType, size, data, usage);
|
|
glBindBuffer(bufferType, 0);
|
|
return object;
|
|
}
|
|
|
|
void VertexBuffer::SetSize(int vertexCount)
|
|
{
|
|
mVertexCount = vertexCount;
|
|
mVertexes = new Vertex[mVertexCount];
|
|
memset(mVertexes, 0, sizeof(Vertex)*mVertexCount);
|
|
mVBO = CreateBufferObject(GL_ARRAY_BUFFER, sizeof(Vertex)*mVertexCount, GL_STATIC_DRAW, nullptr);
|
|
}
|
|
|
|
void VertexBuffer::SetPosition(int index, float x, float y, float z, float w) {
|
|
mVertexes[index].Position[0] = x;
|
|
mVertexes[index].Position[1] = y;
|
|
mVertexes[index].Position[2] = z;
|
|
mVertexes[index].Position[3] = w;
|
|
}
|
|
void VertexBuffer::SetColor(int index, float r, float g, float b, float a) {
|
|
mVertexes[index].Color[0] = r;
|
|
mVertexes[index].Color[1] = g;
|
|
mVertexes[index].Color[2] = b;
|
|
mVertexes[index].Color[3] = a;
|
|
}
|
|
void VertexBuffer::SetTexcoord(int index, float x, float y) {
|
|
mVertexes[index].Texcoord[0] = x;
|
|
mVertexes[index].Texcoord[1] = y;
|
|
}
|
|
void VertexBuffer::SetNormal(int index, float x, float y, float z) {
|
|
mVertexes[index].Normal[0] = x;
|
|
mVertexes[index].Normal[1] = y;
|
|
mVertexes[index].Normal[2] = z;
|
|
mVertexes[index].Normal[3] = 1.0;
|
|
}
|
|
|
|
void VertexBuffer::Bind() {
|
|
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
|
|
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(Vertex)*mVertexCount, mVertexes);
|
|
}
|
|
|
|
void VertexBuffer::Unbind() {
|
|
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
|
}
|
|
|
|
Vertex& VertexBuffer::Get(int index) {
|
|
return mVertexes[index];
|
|
}
|