void
BitVector::indexForSelect()
{
delete this->select_index;
usint index_samples = (this->number_of_blocks + BitVector::INDEX_RATE - 1) / BitVector::INDEX_RATE;
this->select_rate = (this->items + index_samples - 1) / index_samples;
index_samples = (this->items + this->select_rate - 1) / this->select_rate + 1;
WriteBuffer index_buffer(index_samples, length(this->number_of_blocks - 1));
// current is index, pointer is sample number.
usint current = 0, pointer = 0;
this->samples->goToItem(2);
while(this->samples->hasNextItem())
{
usint limit = this->samples->readItem(); // Next sampled index.
this->samples->skipItem();
while(current < limit)
{
index_buffer.writeItem(pointer);
current += this->select_rate;
}
pointer++;
}
index_buffer.writeItem(this->number_of_blocks - 1);
this->select_index = index_buffer.getReadBuffer();
}
GLFWwindow *setup_program(t_properties *properties)
{
static const float verts[] = {-1, 1, -1, -1, 1, -1, 1, 1};
static const GLuint inds[] = {0, 1, 3, 1, 2, 3};
GLFWwindow *window;
properties->width = 1000;
properties->height = 1000;
window = make_glfw(properties->width, properties->height);
glClearColor(0, 0, 0, 1);
properties->model = vao();
properties->verts = data_buffer((GLvoid *)verts, sizeof(verts));
properties->indices = index_buffer((GLvoid *)inds, sizeof(inds));
vao_add_indices(properties->model, properties->indices);
vao_add_vdata(properties->model, properties->verts, 2, GL_FALSE);
ft_putnbr(glGetError());
ft_putendl(" -0");
properties->shaders[0] = load_vertex();
properties->shaders[1] = load_fragment(properties->map);
properties->program = shader_program(properties->shaders, 2);
ft_putnbr(glGetError());
ft_putendl(" -1");
glUseProgram(properties->program);
glBindVertexArray(properties->model);
glEnableVertexAttribArray(0);
init_uniforms(properties->program);
return (window);
}
void
BitVector::indexForRank()
{
delete this->rank_index;
usint value_samples = (this->number_of_blocks + BitVector::INDEX_RATE - 1) / BitVector::INDEX_RATE;
this->rank_rate = (this->size + value_samples - 1) / value_samples;
value_samples = (this->size + this->rank_rate - 1) / this->rank_rate + 1;
WriteBuffer index_buffer(value_samples, length(this->number_of_blocks - 1));
// current is value, pointer is sample number.
usint current = 0, pointer = 0;
this->samples->goToItem(2);
while(this->samples->hasNextItem())
{
this->samples->skipItem();
usint limit = this->samples->readItem(); // Next sampled value.
while(current < limit)
{
index_buffer.writeItem(pointer);
current += this->rank_rate;
}
pointer++;
}
index_buffer.writeItem(this->number_of_blocks - 1);
this->rank_index = index_buffer.getReadBuffer();
}
IndexBufferSet()
: curr_buffer_size_(0)
{
IndexBuffer index_buffer("default");
ib_set_.insert(index_buffer);
}