AddScreenShader()

Syntax

AddScreenShader(Shader)

Adds a realtime shader to the screen. If the same shader is already set, it will replaced. Any number of shaders can be stacked on the screen. The shader effect can be controlled by ScreenShaderAttribute().

Parameters

Shader

The shader to apply. It can be one of the following value: #PB_Shader_Blur : Add a blur effect to the screen. #PB_Shader_Noise : Add a noise effect to the screen. #PB_Shader_Pixelate : Add a pixelate effect to the screen. #PB_Shader_Bevel : Add a bevel effect to the screen (lighter/darker edges). #PB_Shader_BulgePinch: Add a bulge or pinch effect to the screen. #PB_Shader_Adjustment: Allow to adjust color components like red, green, blue channels, alpha value and more. #PB_Shader_Reflection: Add a screen reflection effect.

Return value

None.

Example

  OpenScreen(800, 600, 32, "Shader Test")
  SetFrameRate(60)

  Procedure RenderFrame()
    Static Time.d
    
    DisplaySprite(0, 0, 0)
    
    ; Animate the reflection wave
    Time + 0.05
    ScreenShaderAttribute(#PB_ReflectionShader_Time, Time)
  
    FlipBuffers() ; continue the rendering
  EndProcedure

  Procedure Loading(Type, Filename$)
    Static NbLoadedElements
    
    NbLoadedElements+1
    If NbLoadedElements = 1 ; Finished the loading of all images and sounds, we can start the applications
      AddScreenShader(#PB_Shader_Reflection)
      ScreenShaderAttribute(#PB_ReflectionShader_Boundary, 0.80)
      
      FlipBuffers() ; start the rendering
    EndIf
  EndProcedure

  Procedure LoadingError(Type, Filename$)
    Debug Filename$ + ": loading error"
  EndProcedure

  ; Register the loading event before calling any resource load command
  BindEvent(#PB_Event_Loading, @Loading())
  BindEvent(#PB_Event_LoadingError, @LoadingError())
  BindEvent(#PB_Event_RenderFrame, @RenderFrame())

  LoadSprite(0, "Data/Mountain.jpg")

See Also

RemoveScreenShader(), ScreenShaderAttribute()

Supported OS

All