void D3D11RenderTarget::captureColorBuffer(ColorImageR8G8B8A8 &result)
{
auto &context = m_graphics->getContext();
context.CopyResource(m_captureTexture, m_texture);
result.allocate(m_width, m_height);
D3D11_MAPPED_SUBRESOURCE resource;
UINT subresource = D3D11CalcSubresource(0, 0, 0);
HRESULT hr = context.Map(m_captureTexture, subresource, D3D11_MAP_READ, 0, &resource);
const BYTE *data = (BYTE *)resource.pData;
for (UINT y = 0; y < m_height; y++)
{
memcpy(&result(0U, y), data + resource.RowPitch * y, m_width * sizeof(ml::vec4uc));
}
context.Unmap(m_captureTexture, subresource);
}
ColorImageR8G8B8A8 LodePNG::load(const std::string &filename)
{
if (!ml::util::fileExists(filename))
{
std::cout << ("LodePNG::load file not found: " + filename);
return ColorImageR8G8B8A8();
}
std::vector<BYTE> image;
UINT width, height;
UINT error = lodepng::decode(image, width, height, filename);
MLIB_ASSERT_STR(!error, std::string(lodepng_error_text(error)) + ": " + filename);
ColorImageR8G8B8A8 result;
if (!error)
{
result.allocate(width, height);
memcpy(result.getPointer(), &image[0], 4 * width * height);
}
return result;
}
