Sakura Bliss version of Direct3D 11 rendering and presentation load tool

I am sharing today one another tool which I am using to simulate load from time to time (such as the one against video/desktop streaming through Rainway).

The application is rendering an HLSL variant of Sakura Bliss shadertoy (by Philippe Desgranges) using Direct3D 11 swap chain in DXGI_SWAP_EFFECT_FLIP_DISCARD mode.

For starters, the shader is mesmerizing on its own, fantastic work!

Just as in the case of another earlier application with another shadertoy, the HLSL source code can be extracted from application resources and the shaders are compiled on runtime.

The application offers some important command line switches to configure the workload as needed.

Syntax: RenderSc [options]

  -DisableDebugOutput - Disable forward of debug output to console output in debug mode (should appear before -Debug)
  -Debug[:<Normal|Full|<Value>>] - Enable self-debugging capability with specific minidump type
  -EnumerateAdapters - Enumerate DXGI adapters and exit
  -AdapterIndex <index> - Specify DXGI adapter index (default is 0)
  -OutputIndex <index> - Specify DXGI output index (default is 0)
  -Resolution <width> <height> - Specify resolution of generated video (default is 1920 x 1080)
  -Format <format> - Specify DXGI format (b8g8r8a8, r8g8b8a8, r10g10b10a2, r16g16b16a16; default is b8g8r8a8)
  -SwapChainBufferCount <count> - Specify DXGI swapchain buffer count (default is 2)
  -Fullscreen - Start in full screen mode (otherwise use Alt+Enter to switch)
  -Rate <numerator> <denominator> - Specify frame rate for fullscreen mode (default is 144 Hz)
  -PresentSyncInterval <interval> - Use specific presentation synchronization interval (default is 0)

Full-screen mode can be requested from command line as well as enabled or disabled by Alt+Enter.

It is possible to configure some important parameters which you should be aware of from MSDN documentation on DXGI and Direct3D 11. One specific thing to mention is that it is possible to request DXGI_FORMAT_R10G10B10A2_UNORM and DXGI_FORMAT_R16G16B16A16_FLOAT formats. To reduce amount of rendering a
-PresentSyncInterval 1 parameter can be used: it defines the first argument to IDXGISwapChain::Present call.

Download links


  • 64-bit: RenderSc.exe (in .7z archive)
  • License: This software is free to use

Leave a Reply