Add post processing

[ivokabel]

• [x] Analysis: PS or ~CS~?
• [x] Add 2nd pass
  • [x] Optional (on key press)
  • [x] Low-level prototype:
  • [x] Texture/RTV/SRV
  • [x] Samplers, ...
  • [x] Shader infrastructure
  • [x] DrawFullScreenQuad
  • [x] Shader op: no change & simple test operation
  • [x] Higher-level wrapper: PassBuffer
• [x] Implement image processing
  • [x] Bloom
  • [x] Downscale
  • [x] Horizontal blur
  • [x] Vertical blur
  • [x] Composition: orig + blurred
  • Tone mapping?
  • FXAA?
• [x] MSAA support
• [x] Optional: Downscale flickering problem

[ivokabel]

Resources:

• [x] When is a compute shader more efficient than a pixel shader for image filtering?
• [x] Bloom in DirectX
• [x] Unity: Bloom

Other resources:

• Raster Tek: Tutorial 36: Blur
• D11 HDRToneMappingCS11
• How to do good bloom for HDR rendering

[ivokabel]

Bloom passes:

• Stages (single sample):
  • Scene.Render → RenderBuff
  • RenderBuff → ~BrightPassPS → BrightPassBuff~
  • ~BrightPassBuff~ → BloomHorizontalPS → BloomHorizontalBuff
  • BloomHorizontalBuff → BloomVerticalPS → BloomBuff
  • RenderBuff, BloomBuff → FinalPassPS → SwapChainBuff
• Stages (multi sample):
  • ...

[ivokabel]

ta daaa