bool RenderWindow::CopyToImage(AbstractImage* image, const Rectui& rect, const Vector3ui& dstPos) const
{
#if NAZARA_RENDERER_SAFE
if (!m_context)
{
NazaraError("Window has not been created");
return false;
}
#endif
Vector2ui windowSize = GetSize();
#if NAZARA_RENDERER_SAFE
if (!image)
{
NazaraError("Image must be valid");
return false;
}
if (image->GetFormat() != PixelFormatType_RGBA8)
{
// Pour plus de facilité, évidemment on peut faire sauter cette règle avec un peu de gestion
NazaraError("Image must be RGBA8-formatted");
return false;
}
if (rect.x + rect.width > windowSize.x || rect.y + rect.height > windowSize.y)
{
NazaraError("Rectangle dimensions are out of window's bounds");
return false;
}
Vector3ui imageSize = image->GetSize();
if (dstPos.x + rect.width > imageSize.x || dstPos.y + rect.height > imageSize.y || dstPos.z > imageSize.z)
{
NazaraError("Cube dimensions are out of image's bounds");
return false;
}
#endif
const Context* currentContext = Context::GetCurrent();
if (m_context != currentContext)
{
if (!m_context->SetActive(true))
{
NazaraError("Failed to activate context");
return false;
}
}
///TODO: Fast-path pour les images en cas de copie du buffer entier
m_buffer.resize(rect.width*rect.height*4);
glReadPixels(rect.x, windowSize.y - rect.height - rect.y, rect.width, rect.height, GL_RGBA, GL_UNSIGNED_BYTE, m_buffer.data());
// Les pixels sont retournés, nous devons envoyer les pixels par rangée
for (unsigned int i = 0; i < rect.height; ++i)
image->Update(&m_buffer[rect.width*4*i], Boxui(dstPos.x, rect.height - i - 1, dstPos.z, rect.width, 1, 1), rect.width);
if (m_context != currentContext)
{
if (currentContext)
{
if (!currentContext->SetActive(true))
NazaraWarning("Failed to reset old context");
}
else
m_context->SetActive(false);
}
return true;
}
void LODNode::computeVoxelBoxes_( )
{
Vector3i pntPos = getAbsolutePosition() * blockSize_;
localVoxelBox_ = Boxui( pntPos, pntPos + blockSize_ );
}
