render_target

TargetMap

Typ:

Bemerkungen:

• Falls gewünscht kann vom Event ENABLE_RENDER des View-Materials auf das Renderziel (render_target) zugegriffen werden.

Edition:

Beispiel:

MATERIAL* mtlBlur = 
{
  effect = "
  texture TargetMap;
  texture StencilMap;
  sampler smpSource = sampler_state { texture = <TargetMap>; };
  sampler smpStencil = sampler_state { texture = <StencilMap>; };
  float4 vecViewPort; // contains viewport pixel size in zw components

  float4 blurPS( float2 Tex : TEXCOORD0) : COLOR0 
  {
    float4 Color = tex2D(smpSource,Tex.xy); // sample previous render target
    float4 Stencil = 0;
    const float fDist = 2.5;
    for (float i=-fDist; i<=fDist; i+=fDist) // average stencil shadow from 9 samples
      for (float j=-fDist; j<=fDist; j+=fDist)
        Stencil += tex2D(smpStencil,Tex.xy+float2(i*vecViewPort.z,j*vecViewPort.w));
    Color.rgb -= 0.15*Stencil.a; // blend stencil alpha over previous render target
    return Color;
  }

  technique blur
  { 
    pass one
    { 
	    PixelShader = compile ps_2_0 blurPS(); 
    }
  } 
  technique fallback { pass one { } }
  ";
}

VIEW* vStencil = { 
  material = mtlBlur;
  flags = CHILD | PROCESS_TARGET; 
} // view for postprocessing the stencil buffer

function main()
{
  ...
  shadow_stencil = 2; // activate z-fail stencil shadows
  render_stencil = bmap_createblack(screen_size.x,screen_size.y,32); // render the stencil buffer into the bmap
  camera.stage = vStencil; // attach the stencil blur stage to the camera view
  ...
}

Siehe auch:

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