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#include "particle_vertex_buffer.h"
ParticleVertexBuffer::ParticleVertexBuffer(std::vector<GLfloat>&& data):
_data{ std::move(data) } {
glGenVertexArrays(1, &_array);
glGenBuffers(1, &_buffer);
glBindVertexArray(_array);
glBindBuffer(GL_ARRAY_BUFFER, _buffer);
glBufferData(
GL_ARRAY_BUFFER,
_data.size() * sizeof(GLfloat),
_data.data(),
GL_DYNAMIC_DRAW
);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, nullptr);
}
ParticleVertexBuffer::~ParticleVertexBuffer() {
glDeleteBuffers(1, &_buffer);
glDeleteVertexArrays(1, &_array);
}
GLuint ParticleVertexBuffer::getBuffer() const {
return _buffer;
}
void ParticleVertexBuffer::draw() const {
glBindVertexArray(_array);
glDrawArrays(GL_POINTS, 0, _data.size()/3);
}
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