// Updates the text to be displayed.
void SampleFpsTextRenderer::Update(DX::StepTimer const& timer)
{
// Update display text.
uint32 fps = timer.GetFramesPerSecond();
m_text = (fps > 0) ? std::to_wstring(fps) + L" FPS" : L" - FPS";
ComPtr<IDWriteTextLayout> textLayout;
DX::ThrowIfFailed(
m_deviceResources->GetDWriteFactory()->CreateTextLayout(
m_text.c_str(),
(uint32) m_text.length(),
m_textFormat.Get(),
240.0f, // Max width of the input text.
50.0f, // Max height of the input text.
&textLayout
)
);
DX::ThrowIfFailed(
textLayout.As(&m_textLayout)
);
DX::ThrowIfFailed(
m_textLayout->GetMetrics(&m_textMetrics)
);
}
// 更新要显示的文本。
void SampleFpsTextRenderer::Update(DX::StepTimer const& timer)
{
// 更新显示文本。
uint32 fps = timer.GetFramesPerSecond();
m_text = (fps > 0) ? std::to_wstring(fps) + L" FPS" : L" - FPS";
DX::ThrowIfFailed(
m_deviceResources->GetDWriteFactory()->CreateTextLayout(
m_text.c_str(),
(uint32) m_text.length(),
m_textFormat.Get(),
240.0f, // 输入文本的最大宽度。
50.0f, // 输入文本的最大高度。
&m_textLayout
)
);
DX::ThrowIfFailed(
m_textLayout->GetMetrics(&m_textMetrics)
);
}