bool ScriptManager::loadFromStream(const std::string& name, sf::InputStream& stream, ScriptType type)
{
auto len = size_t(stream.getSize());
std::vector<char> data(len);
stream.read(&data[0], len);
return loadFromMemory(name, &data[0], len, type);
}
bool Texture::loadDDS(sf::InputStream& stream)
{
gli::gl GL;
size_t size = stream.getSize();
const char* buf = new const char[size];
m_tex = gli::texture2D(gli::load_dds(buf, size));
delete[] buf;
if (m_tex.empty())
{
return false;
}
gli::gl::format const format = GL.translate(m_tex.format());
glGenTextures(1, &m_id);
glBindTexture(GL_TEXTURE_2D, m_id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, static_cast<GLint>(m_tex.levels() - 1));
glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA,reinterpret_cast<const GLint*>(format.Swizzle));
glTexImage2D(GL_TEXTURE_2D, 0, format.Internal, m_tex.dimensions().x, m_tex.dimensions().y, 0, format.External, GL_UNSIGNED_BYTE, NULL);
//uncompress texture in the gpu
if (gli::is_compressed(m_tex.format()))
{
//fill all mipmap levels
for (std::size_t Level = 0; Level < m_tex.levels(); ++Level)
{
glCompressedTexSubImage2D(GL_TEXTURE_2D, static_cast<GLint>(Level),
0, 0,
static_cast<GLsizei>(m_tex[Level].dimensions().x),
static_cast<GLsizei>(m_tex[Level].dimensions().y),
format.External,
static_cast<GLsizei>(m_tex[Level].size()),
m_tex[Level].data());
}
}
else
{
//fill all mipmap levels
for (std::size_t Level = 0; Level < m_tex.levels(); ++Level)
{
glTexSubImage2D(GL_TEXTURE_2D, static_cast<GLint>(Level),
0, 0,
static_cast<GLsizei>(m_tex[Level].dimensions().x),
static_cast<GLsizei>(m_tex[Level].dimensions().y),
format.External, format.Type,
m_tex[Level].data());
}
}
return true;
}