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LuaBin 2.0

Viewing file root / lua / postprocess / motion_blur.lua

  1.  
  2.  
  3.  
  4. local mat_MotionBlur    = Material( "pp/motionblur" )
  5. local mat_Screen                = Material( "pp/fb" )
  6. local tex_MotionBlur    = render.GetMoBlurTex0()
  7.  
  8. /*---------------------------------------------------------
  9.    Register the convars that will control this effect
  10. ---------------------------------------------------------*/  
  11. local pp_motionblur                     = CreateClientConVar( "pp_motionblur", "0", false, false )
  12. local pp_motionblur_addalpha    = CreateClientConVar( "pp_motionblur_addalpha", "0.2", false, false )
  13. local pp_motionblur_drawalpha   = CreateClientConVar( "pp_motionblur_drawalpha", "0.99", false, false )
  14. local pp_motionblur_delay               = CreateClientConVar( "pp_motionblur_delay", "0.0", false, false )
  15.  
  16. local NextDraw = 0
  17. local LastDraw = 0
  18.  
  19. function DrawMotionBlur( addalpha, drawalpha, delay )
  20.  
  21.         if ( drawalpha == 0 ) then return end
  22.        
  23.         // Copy the backbuffer to the screen effect texture
  24.         render.UpdateScreenEffectTexture()
  25.        
  26.         // If it's been a long time then the buffer is probably dirty, update it
  27.         if ( CurTime() - LastDraw > 0.5 ) then
  28.        
  29.                 mat_Screen:SetMaterialFloat( "$alpha", 1 )
  30.                
  31.                 local OldRT = render.GetRenderTarget();
  32.                 render.SetRenderTarget( tex_MotionBlur )
  33.                         render.SetMaterial( mat_Screen )
  34.                         render.DrawScreenQuad()
  35.                 render.SetRenderTarget( OldRT )
  36.        
  37.         end
  38.  
  39.         // Set up out materials
  40.         mat_MotionBlur:SetMaterialFloat( "$alpha", drawalpha )
  41.         mat_MotionBlur:SetMaterialTexture( "$basetexture", tex_MotionBlur )
  42.        
  43.         if ( NextDraw < CurTime() && addalpha > 0 ) then
  44.  
  45.                 NextDraw = CurTime() + delay
  46.  
  47.                 mat_Screen:SetMaterialFloat( "$alpha", addalpha )
  48.                 local OldRT = render.GetRenderTarget();
  49.                 render.SetRenderTarget( tex_MotionBlur )
  50.  
  51.                 render.SetMaterial( mat_Screen )
  52.                 render.DrawScreenQuad()
  53.  
  54.                 render.SetRenderTarget( OldRT )
  55.  
  56.         end
  57.  
  58.  
  59.         render.SetMaterial( mat_MotionBlur )
  60.         render.DrawScreenQuad()
  61.        
  62.         LastDraw = CurTime()
  63.        
  64. end
  65.  
  66. local function DrawInternal()
  67.  
  68.         if ( !pp_motionblur:GetBool() ) then return end
  69.         if ( !GAMEMODE:PostProcessPermitted( "motion blur" ) ) then return end
  70.  
  71.         DrawMotionBlur( pp_motionblur_addalpha:GetFloat(),
  72.                         pp_motionblur_drawalpha:GetFloat(),
  73.                         pp_motionblur_delay:GetFloat() );
  74.  
  75. end
  76.  
  77.  
  78. hook.Add( "RenderScreenspaceEffects", "RenderMotionBlur", DrawInternal )
  79.  
  80. /*
  81. // Control Panel
  82. */
  83. local function BuildControlPanel( CPanel )
  84.  
  85.         CPanel:AddControl( "Header", { Text = "#MotionBlur", Description = "#MotionBlur_Information" }  )
  86.         CPanel:AddControl( "CheckBox", { Label = "#MotionBlur_Toggle", Command = "pp_motionblur" }  )
  87.        
  88.         local params = { Options = {}, CVars = {}, Label = "#Presets", MenuButton = "1", Folder = "motionblur" }
  89.         params.Options[ "#Default" ] = { pp_motionblur_addalpha = "0.2", pp_motionblur_delay = "0.05", pp_motionblur_drawalpha = "0.99" }
  90.         params.CVars = { "pp_motionblur_addalpha", "pp_motionblur_drawalpha", "pp_motionblur_delay" }
  91.         CPanel:AddControl( "ComboBox",  params )
  92.        
  93.         CPanel:AddControl( "Slider", { Label = "#MotionBlur_Add_Alpha", Command = "pp_motionblur_addalpha", Type = "Float", Min = "0", Max = "1" }  )
  94.         CPanel:AddControl( "Slider", { Label = "#MotionBlur_DrawAlpha", Command = "pp_motionblur_drawalpha", Type = "Float", Min = "0", Max = "1" }  )
  95.         CPanel:AddControl( "Slider", { Label = "#MotionBlur_Delay", Command = "pp_motionblur_delay", Type = "Float", Min = "0", Max = "1" }  ) 
  96.  
  97. end
  98.  
  99. /*
  100. // Tool Menu
  101. */
  102. local function AddPostProcessMenu()
  103.  
  104.         spawnmenu.AddToolMenuOption( "PostProcessing", "PPSimple", "MotionBlur", "#Motion Blur", "", "", BuildControlPanel, { SwitchConVar = "pp_motionblur" } )
  105.  
  106. end
  107.  
  108. hook.Add( "PopulateToolMenu", "AddPostProcessMenu_MotionBlur", AddPostProcessMenu )
  109.  
  110.  
  111.  
  112.