spg-project/Texture3D.cpp

#include "Texture3D.h"

Texture3D::Texture3D() : texture(0) {
    glGenTextures(1, &texture);
    glBindTexture(GL_TEXTURE_3D, texture);
    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);
    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_MIRRORED_REPEAT);
    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT);
}

Texture3D::~Texture3D() {
    glDeleteTextures(1, &texture);
}

void Texture3D::setData(int width, int height, int depth, void* data) {
    glBindTexture(GL_TEXTURE_3D, texture);
    glTexImage3D(GL_TEXTURE_3D, 0, GL_RGB, width, height, depth, 0, GL_RGB,
                 GL_FLOAT, data);
}

void Texture3D::bindTo(int unit) const {
    glActiveTexture(GL_TEXTURE0 + unit);
    glBindTexture(GL_TEXTURE_3D, texture);
}