std::shared_ptr<DepthStencilStateProvider> D3DGraphicContextProvider::create_depth_stencil_state(const DepthStencilStateDescription &desc)
{
std::map<DepthStencilStateDescription, std::shared_ptr<DepthStencilStateProvider> >::iterator it = depth_stencil_states.find(desc);
if (it != depth_stencil_states.end())
{
return it->second;
}
else
{
std::shared_ptr<DepthStencilStateProvider> state(new D3DDepthStencilStateProvider(window->get_device(), desc));
depth_stencil_states[desc.clone()] = state;
return state;
}
}
std::shared_ptr<DepthStencilStateProvider> GL1GraphicContextProvider::create_depth_stencil_state(const DepthStencilStateDescription &desc)
{
auto it = depth_stencil_states.find(desc);
if (it != depth_stencil_states.end())
{
return it->second;
}
else
{
std::shared_ptr<DepthStencilStateProvider> state(new OpenGLDepthStencilStateProvider(desc));
depth_stencil_states[desc.clone()] = state;
return state;
}
}
D3DDepthStencilStateProvider::D3DDepthStencilStateProvider(const ComPtr<ID3D11Device> &device, const DepthStencilStateDescription &desc)
{
CompareFunction front, back;
int front_ref, front_mask, back_ref, back_mask;
desc.get_stencil_compare_front(front, front_ref, front_mask);
desc.get_stencil_compare_back(back, back_ref, back_mask);
unsigned char front_write_mask, back_write_mask;
desc.get_stencil_write_mask(front_write_mask, back_write_mask);
StencilOp fail_front, pass_depth_fail_front, pass_depth_pass_front;
StencilOp fail_back, pass_depth_fail_back, pass_depth_pass_back;
desc.get_stencil_op_front(fail_front, pass_depth_fail_front, pass_depth_pass_front);
desc.get_stencil_op_back(fail_back, pass_depth_fail_back, pass_depth_pass_back);
D3D11_DEPTH_STENCIL_DESC d3d_desc;
d3d_desc.DepthEnable = desc.is_depth_test_enabled() ? TRUE : FALSE;
d3d_desc.DepthWriteMask = desc.is_depth_write_enabled() ? D3D11_DEPTH_WRITE_MASK_ALL : D3D11_DEPTH_WRITE_MASK_ZERO;
d3d_desc.DepthFunc = to_d3d_compare_func(desc.get_depth_compare_function());
d3d_desc.StencilEnable = desc.is_stencil_test_enabled();
d3d_desc.StencilReadMask = D3D11_DEFAULT_STENCIL_READ_MASK; // To do: should this use the write masks instead?
d3d_desc.StencilWriteMask = front_write_mask | back_write_mask;
d3d_desc.FrontFace.StencilFunc = to_d3d_compare_func(front);
d3d_desc.FrontFace.StencilDepthFailOp = to_d3d_stencil_op(pass_depth_fail_front);
d3d_desc.FrontFace.StencilPassOp = D3D11_STENCIL_OP_KEEP;
d3d_desc.FrontFace.StencilFailOp = to_d3d_stencil_op(fail_front);
d3d_desc.BackFace.StencilFunc = to_d3d_compare_func(back);
d3d_desc.BackFace.StencilDepthFailOp = to_d3d_stencil_op(pass_depth_fail_back);
d3d_desc.BackFace.StencilPassOp = D3D11_STENCIL_OP_KEEP;
d3d_desc.BackFace.StencilFailOp = to_d3d_stencil_op(fail_back);
HRESULT result = device->CreateDepthStencilState(&d3d_desc, state.output_variable());
D3DTarget::throw_if_failed("D3D11Device.CreateDepthStencilState failed", result);
// "The formats that support stenciling are DXGI_FORMAT_D24_UNORM_S8_UINT and DXGI_FORMAT_D32_FLOAT_S8X24_UINT."
}
