VBO* VBO::CreateIndex(const GLenum type) {
VBO* indexBuffer = new VBO();
indexBuffer->SetTarget(GL_ELEMENT_ARRAY_BUFFER);
indexBuffer->SetType(type);
indexBuffer->SetUsage(GL_STATIC_DRAW);
return indexBuffer;
}
VBO* VBO::CreateInterleaved(const std::vector<GLuint>& sizes, const GLenum usage){
VBO* buffer = new VBO();
buffer->SetTarget(GL_ARRAY_BUFFER);
buffer->SetType(GL_FLOAT);
buffer->SetUsage(usage);
buffer->m_sizes = sizes;
buffer->m_offsets.reserve(sizes.size());
GLuint totalOffset = 0;
for(size_t i = 0; i <buffer->m_sizes.size(); ++i) {
buffer->m_offsets.push_back(totalOffset);
totalOffset += buffer->m_sizes[i] * sizeof(GLfloat);
}
buffer->STRIDE = totalOffset;
return buffer;
}