UniformBuffer.cpp

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#include "UniformBuffer.h"
#include <iostream>
#include <glm/vec4.hpp>
 
UniformBuffer::UniformBuffer(unsigned int size, unsigned int bindingPoint, QOpenGLFunctions_4_5_Core* glFuncs)
    : binding(bindingPoint), bufferSize(size), funcs(glFuncs) {
 
    funcs->glGenBuffers(1, &id);
    funcs->glBindBuffer(GL_UNIFORM_BUFFER, id);
    funcs->glBufferData(GL_UNIFORM_BUFFER, size, nullptr, GL_DYNAMIC_DRAW);
    funcs->glBindBufferBase(GL_UNIFORM_BUFFER, binding, id);
    funcs->glBindBuffer(GL_UNIFORM_BUFFER, 0);
}
 
UniformBuffer::~UniformBuffer() {
    funcs->glDeleteBuffers(1, &id);
}
 
void UniformBuffer::bind() const {
    funcs->glBindBuffer(GL_UNIFORM_BUFFER, id);
}
 
void UniformBuffer::updateData(const void* data, unsigned int size, unsigned int offset) {
    funcs->glBindBuffer(GL_UNIFORM_BUFFER, id);
    funcs->glBufferSubData(GL_UNIFORM_BUFFER, offset, size, data);
    funcs->glBindBuffer(GL_UNIFORM_BUFFER, 0);
}