gaming-core/wrapper/VertexBuffer.cpp

#include "wrapper/VertexBuffer.h"

VertexBuffer::VertexBuffer() : vertexArray(0), vertexBuffer(0) {
    glGenVertexArrays(1, &vertexArray);
    glGenBuffers(1, &vertexBuffer);
}

VertexBuffer::~VertexBuffer() {
    glDeleteBuffers(1, &vertexBuffer);
    glDeleteVertexArrays(1, &vertexArray);
}

void VertexBuffer::bindArray() const {
    glBindVertexArray(vertexArray);
}

void VertexBuffer::bindBuffer() const {
    glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer);
}

void VertexBuffer::setAttributes(const Attributes& attributes) {
    bindArray();
    bindBuffer();
    attributes.set();
}

void VertexBuffer::setData(int size, const void* data, int flag) {
    bindBuffer();
    glBufferData(GL_ARRAY_BUFFER, size, data, flag);
}

void VertexBuffer::setStaticData(int size, const void* data) {
    setData(size, data, GL_STATIC_DRAW);
}

void VertexBuffer::setStreamData(int size, const void* data) {
    setData(size, data, GL_STREAM_DRAW);
}

void VertexBuffer::setDynamicData(int size, const void* data) {
    setData(size, data, GL_DYNAMIC_DRAW);
}

void VertexBuffer::updateData(int offset, int size, const void* data) {
    bindBuffer();
    glBufferSubData(GL_ARRAY_BUFFER, offset, size, data);
}

void VertexBuffer::drawMode(int vertices, int mode, int offset) {
    bindArray();
    glDrawArrays(mode, offset, vertices);
}

void VertexBuffer::draw(int vertices, int offset) {
    drawMode(vertices, GL_TRIANGLES, offset);
}

void VertexBuffer::drawStrip(int vertices, int offset) {
    drawMode(vertices, GL_TRIANGLE_STRIP, offset);
}

void VertexBuffer::drawPoints(int vertices, int offset) {
    drawMode(vertices, GL_POINTS, offset);
}